[PATCH v2 1/5] drivers: mfd: Add MAX77541/MAX77540 PMIC Support

[PATCH v2 1/5] drivers: mfd: Add MAX77541/MAX77540 PMIC Support

[Okan Sahin]

MFD driver for MAX77541/MAX77540 to enable its sub
devices.

The MAX77541 is a multi-function devices. It includes
buck converter and ADC.

The MAX77540 is a high-efficiency buck converter
with two 3A switching phases.

They have same regmap except for ADC part of MAX77541.

Signed-off-by: Okan Sahin <okan.sahin@analog.com>
---
 MAINTAINERS                  |   7 +
 drivers/mfd/Kconfig          |  13 ++
 drivers/mfd/Makefile         |   1 +
 drivers/mfd/max77541.c       | 244 +++++++++++++++++++++++++++++++++++
 include/linux/mfd/max77541.h | 108 ++++++++++++++++
 5 files changed, 373 insertions(+)
 create mode 100644 drivers/mfd/max77541.c
 create mode 100644 include/linux/mfd/max77541.h

diff --git a/MAINTAINERS b/MAINTAINERS
index cf0f18502372..af94d06bb9f0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12497,6 +12497,13 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/regulator/maxim,max20086.yaml
 F:	drivers/regulator/max20086-regulator.c
 
+MAXIM MAX77541 PMIC MFD DRIVER
+M:	Okan Sahin <okan.sahin@analog.com>
+L:	linux-kernel@vger.kernel.org
+S:	Maintained
+F:	drivers/mfd/max77541.c
+F:	include/linux/mfd/max77541.h
+
 MAXIM MAX77650 PMIC MFD DRIVER
 M:	Bartosz Golaszewski <brgl@bgdev.pl>
 L:	linux-kernel@vger.kernel.org
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 8b93856de432..e6bf621cbc8e 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -791,6 +791,19 @@ config MFD_MAX14577
 	  additional drivers must be enabled in order to use the functionality
 	  of the device.
 
+config MFD_MAX77541
+	tristate "Analog Devices MAX77541/77540 PMIC Support"
+	depends on I2C=y
+	select MFD_CORE
+	select REGMAP_I2C
+	select REGMAP_IRQ
+	help
+	  Say yes here to add support for Analog Devices
+	  MAX77541 and MAX77540 Power Management ICs.This
+	  driver provides common support for accessing the
+	  device;additional drivers must be enabled in order
+	  to use the functionality of the device.
+
 config MFD_MAX77620
 	bool "Maxim Semiconductor MAX77620 and MAX20024 PMIC Support"
 	depends on I2C=y
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 7ed3ef4a698c..bf21228f5742 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -161,6 +161,7 @@ obj-$(CONFIG_MFD_DA9063)	+= da9063.o
 obj-$(CONFIG_MFD_DA9150)	+= da9150-core.o
 
 obj-$(CONFIG_MFD_MAX14577)	+= max14577.o
+obj-$(CONFIG_MFD_MAX77541)	+= max77541.o
 obj-$(CONFIG_MFD_MAX77620)	+= max77620.o
 obj-$(CONFIG_MFD_MAX77650)	+= max77650.o
 obj-$(CONFIG_MFD_MAX77686)	+= max77686.o
diff --git a/drivers/mfd/max77541.c b/drivers/mfd/max77541.c
new file mode 100644
index 000000000000..3667358edfc8
--- /dev/null
+++ b/drivers/mfd/max77541.c
@@ -0,0 +1,244 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2022 Analog Devices, Inc.
+ * Mfd core driver for the MAX77540 and MAX77541
+ */
+
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/max77541.h>
+#include <linux/regmap.h>
+
+static const struct regmap_config max77541_regmap_config = {
+	.reg_bits   = 8,
+	.val_bits   = 8,
+};
+
+static const struct regmap_irq max77541_src_irqs[] = {
+	MAX77541_REGMAP_IRQ_REG(MAX77541_BIT_INT_SRC_TOPSYS),
+	MAX77541_REGMAP_IRQ_REG(MAX77541_BIT_INT_SRC_BUCK),
+};
+
+static const struct regmap_irq_chip max77541_src_irq_chip = {
+	.name		= "max77541-src",
+	.status_base	= MAX77541_REG_INT_SRC,
+	.mask_base	= MAX77541_REG_INT_SRC,
+	.num_regs	= 1,
+	.irqs		= max77541_src_irqs,
+	.num_irqs       = ARRAY_SIZE(max77541_src_irqs),
+};
+
+static const struct regmap_irq max77541_topsys_irqs[] = {
+	MAX77541_REGMAP_IRQ_REG(MAX77541_BIT_TOPSYS_INT_TJ_120C),
+	MAX77541_REGMAP_IRQ_REG(MAX77541_BIT_TOPSYS_INT_TJ_140C),
+	MAX77541_REGMAP_IRQ_REG(MAX77541_BIT_TOPSYS_INT_TSHDN),
+	MAX77541_REGMAP_IRQ_REG(MAX77541_BIT_TOPSYS_INT_UVLO),
+	MAX77541_REGMAP_IRQ_REG(MAX77541_BIT_TOPSYS_INT_ALT_SWO),
+	MAX77541_REGMAP_IRQ_REG(MAX77541_BIT_TOPSYS_INT_EXT_FREQ_DET),
+};
+
+static const struct regmap_irq_chip max77541_topsys_irq_chip = {
+	.name		= "max77541-topsys",
+	.status_base	= MAX77541_REG_TOPSYS_INT,
+	.mask_base	= MAX77541_REG_TOPSYS_INT_M,
+	.num_regs	= 1,
+	.irqs		= max77541_topsys_irqs,
+	.num_irqs	= ARRAY_SIZE(max77541_topsys_irqs),
+};
+
+static const struct regmap_irq max77541_buck_irqs[] = {
+	MAX77541_REGMAP_IRQ_REG(MAX77541_BIT_BUCK_INT_M1_POK_FLT),
+	MAX77541_REGMAP_IRQ_REG(MAX77541_BIT_BUCK_INT_M2_POK_FLT),
+	MAX77541_REGMAP_IRQ_REG(MAX77541_BIT_BUCK_INT_M1_SCFLT),
+	MAX77541_REGMAP_IRQ_REG(MAX77541_BIT_BUCK_INT_M2_SCFLT),
+};
+
+static const struct regmap_irq_chip max77541_buck_irq_chip = {
+	.name		= "max77541-buck",
+	.status_base	= MAX77541_REG_BUCK_INT,
+	.mask_base	= MAX77541_REG_BUCK_INT_M,
+	.num_regs	= 1,
+	.irqs		= max77541_buck_irqs,
+	.num_irqs	= ARRAY_SIZE(max77541_buck_irqs),
+};
+
+static const struct regmap_irq max77541_adc_irqs[] = {
+	MAX77541_REGMAP_IRQ_REG(MAX77541_BIT_ADC_INT_CH1_I),
+	MAX77541_REGMAP_IRQ_REG(MAX77541_BIT_ADC_INT_CH2_I),
+	MAX77541_REGMAP_IRQ_REG(MAX77541_BIT_ADC_INT_CH3_I),
+	MAX77541_REGMAP_IRQ_REG(MAX77541_BIT_ADC_INT_CH6_I),
+};
+
+static const struct regmap_irq_chip max77541_adc_irq_chip = {
+	.name		= "max77541-adc",
+	.status_base	= MAX77541_REG_ADC_INT,
+	.mask_base	= MAX77541_REG_ADC_MSK,
+	.num_regs	= 1,
+	.irqs		= max77541_adc_irqs,
+	.num_irqs	= ARRAY_SIZE(max77541_adc_irqs),
+};
+
+static const struct mfd_cell max77540_devs[] = {
+	MFD_CELL_OF("max77540-regulator", NULL, NULL, 0, 0,
+		    "adi,max77540-regulator"),
+};
+
+static const struct mfd_cell max77541_devs[] = {
+	MFD_CELL_OF("max77541-regulator", NULL, NULL, 0, 0,
+		    "adi,max77541-regulator"),
+	MFD_CELL_OF("max77541-adc", NULL, NULL, 0, 0,
+		    NULL),
+};
+
+static const struct chip_info chip[] = {
+	[MAX77540] = {
+		.n_devs = ARRAY_SIZE(max77540_devs),
+		.devs = max77540_devs,
+	},
+	[MAX77541] = {
+		.n_devs = ARRAY_SIZE(max77541_devs),
+		.devs = max77541_devs,
+	},
+};
+
+static int max77541_pmic_irq_init(struct device *dev)
+{
+	struct max77541_dev *max77541 = dev_get_drvdata(dev);
+	int irq = max77541->i2c->irq;
+	int ret;
+
+	ret = devm_regmap_add_irq_chip(dev, max77541->regmap, irq,
+				       IRQF_ONESHOT | IRQF_SHARED, 0,
+				       &max77541_src_irq_chip, &max77541->irq_data);
+	if (ret)
+		return ret;
+
+	ret = devm_regmap_add_irq_chip(dev, max77541->regmap, irq,
+				       IRQF_ONESHOT | IRQF_SHARED, 0,
+				       &max77541_topsys_irq_chip, &max77541->irq_topsys);
+	if (ret)
+		return ret;
+
+	ret = devm_regmap_add_irq_chip(dev, max77541->regmap, irq,
+				       IRQF_ONESHOT | IRQF_SHARED, 0,
+				       &max77541_buck_irq_chip, &max77541->irq_buck);
+	if (ret)
+		return ret;
+
+	if (max77541->id == MAX77541) {
+		ret = devm_regmap_add_irq_chip(dev, max77541->regmap, irq,
+					       IRQF_ONESHOT | IRQF_SHARED, 0,
+					       &max77541_adc_irq_chip,
+					       &max77541->irq_adc);
+		if (ret)
+			return ret;
+	}
+
+	return ret;
+}
+
+static int max77541_pmic_setup(struct device *dev)
+{
+	struct max77541_dev *max77541 = dev_get_drvdata(dev);
+	unsigned int val;
+	int ret;
+
+	ret = max77541_pmic_irq_init(dev);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to initialize IRQ\n");
+
+	ret = regmap_read(max77541->regmap, MAX77541_REG_INT_SRC, &val);
+	if (ret)
+		return ret;
+
+	ret = regmap_read(max77541->regmap, MAX77541_REG_TOPSYS_INT, &val);
+	if (ret)
+		return ret;
+
+	ret = regmap_read(max77541->regmap, MAX77541_REG_BUCK_INT, &val);
+	if (ret)
+		return ret;
+
+	ret = device_init_wakeup(dev, true);
+	if (ret)
+		return dev_err_probe(dev, ret, "Unable to init wakeup\n");
+
+	switch (max77541->id) {
+	case MAX77540:
+		return devm_mfd_add_devices(dev, -1, max77540_devs, ARRAY_SIZE(max77540_devs),
+					    NULL, 0, NULL);
+	case MAX77541:
+		return devm_mfd_add_devices(dev, -1, max77541_devs, ARRAY_SIZE(max77541_devs),
+					    NULL, 0, NULL);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int max77541_i2c_probe(struct i2c_client *client,
+			      const struct i2c_device_id *id)
+{
+	struct device *dev = &client->dev;
+	struct max77541_dev *max77541;
+	const void *match;
+
+	max77541 = devm_kzalloc(&client->dev, sizeof(*max77541), GFP_KERNEL);
+	if (!max77541)
+		return -ENOMEM;
+
+	i2c_set_clientdata(client, max77541);
+	max77541->i2c = client;
+
+	match = device_get_match_data(dev);
+	if (match)
+		max77541->id = (enum max7754x_ids)match;
+	else if (id)
+		max77541->id = id->driver_data;
+	else
+		return -ENODEV;
+
+	max77541->chip = &chip[max77541->id];
+
+	max77541->regmap = devm_regmap_init_i2c(client, &max77541_regmap_config);
+	if (IS_ERR(max77541->regmap))
+		return dev_err_probe(dev, PTR_ERR(max77541->regmap),
+				     "Failed to allocate register map\n");
+
+	return max77541_pmic_setup(dev);
+}
+
+static const struct of_device_id max77541_of_id[] = {
+	{
+		.compatible = "adi,max77540",
+		.data = (void *)MAX77540,
+	},
+	{
+		.compatible = "adi,max77541",
+		.data = (void *)MAX77541,
+	},
+	{ /* sentinel */  }
+};
+MODULE_DEVICE_TABLE(of, max77541_of_id);
+
+static const struct i2c_device_id max77541_i2c_id[] = {
+	{ "max77540", MAX77540 },
+	{ "max77541", MAX77541 },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(i2c, max77541_i2c_id);
+
+static struct i2c_driver max77541_i2c_driver = {
+	.driver = {
+		.name = "max77541",
+		.of_match_table = max77541_of_id,
+	},
+	.probe = max77541_i2c_probe,
+	.id_table = max77541_i2c_id,
+};
+module_i2c_driver(max77541_i2c_driver);
+
+MODULE_DESCRIPTION("MAX7740/MAX7741 MFD Driver");
+MODULE_AUTHOR("Okan Sahin <okan.sahin@analog.com>");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("1.0");
diff --git a/include/linux/mfd/max77541.h b/include/linux/mfd/max77541.h
new file mode 100644
index 000000000000..047ea1079845
--- /dev/null
+++ b/include/linux/mfd/max77541.h
@@ -0,0 +1,108 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef __MAX77541_MFD_H__
+#define __MAX77541_MFD_H__
+
+#include <linux/bits.h>
+#include <linux/types.h>
+
+/*      REGISTERS       */
+
+/*      GLOBAL CONFIG1       */
+#define MAX77541_REG_INT_SRC                    0x00
+#define MAX77541_REG_INT_SRC_M                  0x01
+#define MAX77541_REG_TOPSYS_INT                 0x02
+#define MAX77541_REG_TOPSYS_INT_M               0x03
+
+#define MAX77541_REG_EN_CTRL                    0x0B
+
+/*      BUCK CONFIG       */
+#define MAX77541_REG_BUCK_INT                   0x20
+#define MAX77541_REG_BUCK_INT_M                 0x21
+
+#define MAX77541_REG_M1_VOUT                    0x23
+#define MAX77541_REG_M1_CFG1                    0x25
+
+#define MAX77541_REG_M2_VOUT                    0x33
+#define MAX77541_REG_M2_CFG1                    0x35
+
+/* INTERRUPT MASKS*/
+#define MAX77541_REG_INT_SRC_MASK               0x00
+#define MAX77541_REG_TOPSYS_INT_MASK            0x00
+#define MAX77541_REG_BUCK_INT_MASK              0x00
+
+/*BITS OF REGISTERS*/
+
+#define MAX77541_BIT_INT_SRC_TOPSYS             BIT(0)
+#define MAX77541_BIT_INT_SRC_BUCK               BIT(1)
+
+#define MAX77541_BIT_TOPSYS_INT_TJ_120C         BIT(0)
+#define MAX77541_BIT_TOPSYS_INT_TJ_140C         BIT(1)
+#define MAX77541_BIT_TOPSYS_INT_TSHDN           BIT(2)
+#define MAX77541_BIT_TOPSYS_INT_UVLO            BIT(3)
+#define MAX77541_BIT_TOPSYS_INT_ALT_SWO         BIT(4)
+#define MAX77541_BIT_TOPSYS_INT_EXT_FREQ_DET    BIT(5)
+
+#define MAX77541_BIT_BUCK_INT_M1_POK_FLT        BIT(0)
+#define MAX77541_BIT_BUCK_INT_M2_POK_FLT        BIT(1)
+#define MAX77541_BIT_BUCK_INT_M1_SCFLT          BIT(4)
+#define MAX77541_BIT_BUCK_INT_M2_SCFLT          BIT(5)
+
+#define MAX77541_BIT_M1_EN                      BIT(0)
+#define MAX77541_BIT_M2_EN                      BIT(1)
+
+#define MAX77541_BITS_MX_VOUT                   GENMASK(7, 0)
+#define MAX77541_BITS_MX_CFG1_RNG               GENMASK(7, 6)
+
+/*      ADC       */
+#define MAX77541_REG_ADC_INT                    0x70
+#define MAX77541_REG_ADC_MSK                    0x71
+
+#define MAX77541_REG_ADC_DATA_CH1               0x72
+#define MAX77541_REG_ADC_DATA_CH2               0x73
+#define MAX77541_REG_ADC_DATA_CH3               0x74
+#define MAX77541_REG_ADC_DATA_CH6               0x77
+
+#define MAX77541_BIT_ADC_INT_CH1_I              BIT(0)
+#define MAX77541_BIT_ADC_INT_CH2_I              BIT(1)
+#define MAX77541_BIT_ADC_INT_CH3_I              BIT(2)
+#define MAX77541_BIT_ADC_INT_CH6_I              BIT(5)
+
+#define MAX77541_MAX_REGULATORS 2
+
+#define MAX77541_REGMAP_IRQ_REG(_mask)	\
+	{ .mask = (_mask) }
+
+enum max7754x_ids {
+	MAX77540 = 1,
+	MAX77541 = 2,
+};
+
+enum max77541_regulators {
+	MAX77541_BUCK1 = 1,
+	MAX77541_BUCK2,
+};
+
+struct chip_info {
+	int n_devs;
+	const struct mfd_cell *devs;
+};
+
+struct regmap;
+struct regmap_irq_chip_data;
+struct i2c_client;
+
+struct max77541_dev {
+	enum max7754x_ids id;
+	const struct chip_info *chip;
+
+	struct regmap_irq_chip_data *irq_data;
+	struct regmap_irq_chip_data *irq_buck;
+	struct regmap_irq_chip_data *irq_topsys;
+	struct regmap_irq_chip_data *irq_adc;
+
+	struct i2c_client *i2c;
+	struct regmap *regmap;
+};
+
+#endif /* __MAX77541_MFD_H__ */
-- 
2.30.2

[PATCH v2 2/5] dt-bindings: mfd: adi,max77541.yaml Add MAX77541 bindings

[Okan Sahin]

The bindings for MAX77541 MFD driver. It also
includes MAX77540 driver whose regmap is covered by MAX77541.

Signed-off-by: Okan Sahin <okan.sahin@analog.com>
---
 .../devicetree/bindings/mfd/adi,max77541.yaml | 102 ++++++++++++++++++
 MAINTAINERS                                   |   1 +
 2 files changed, 103 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/adi,max77541.yaml

diff --git a/Documentation/devicetree/bindings/mfd/adi,max77541.yaml b/Documentation/devicetree/bindings/mfd/adi,max77541.yaml
new file mode 100644
index 000000000000..50f93cb0bb66
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/adi,max77541.yaml
@@ -0,0 +1,102 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/adi,max77541.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MAX77540/MAX77541 PMIC from ADI.
+
+maintainers:
+  - Okan Sahin <okan.sahin@analog.com>
+
+description: |
+  MAX77540 is a Power Management IC with 2 buck regulators.
+
+  MAX77541 is a Power Management IC with 2 buck regulators and 1 ADC.
+
+properties:
+  compatible:
+    enum:
+      - adi,max77540
+      - adi,max77541
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  regulators:
+    $ref: ../regulator/adi,max77541-regulator.yaml#
+
+  adc:
+    type: object
+    additionalProperties: false
+    properties:
+      compatible:
+        const: adi,max77541-adc
+
+    required:
+      - compatible
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: adi,max77540
+    then:
+      properties:
+        regulator:
+          properties:
+            compatible:
+              const: adi,max77540-regulator
+    else:
+      properties:
+        regulator:
+          properties:
+            compatible:
+              const: adi,max77541-regulator
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        pmic@69 {
+            compatible = "adi,max77541";
+            reg = <0x69>;
+            interrupt-parent = <&gpio>;
+            interrupts = <16 IRQ_TYPE_EDGE_FALLING>;
+
+            regulators {
+                BUCK1 {
+                    regulator-min-microvolt = <500000>;
+                    regulator-max-microvolt = <5200000>;
+                    regulator-boot-on;
+                    regulator-always-on;
+                };
+                BUCK2 {
+                    regulator-min-microvolt = <500000>;
+                    regulator-max-microvolt = <5200000>;
+                    regulator-boot-on;
+                    regulator-always-on;
+                };
+            };
+
+            adc {
+                compatible = "adi,max77541-adc";
+            };
+        };
+    };
+
diff --git a/MAINTAINERS b/MAINTAINERS
index af94d06bb9f0..22f5a9c490e3 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12501,6 +12501,7 @@ MAXIM MAX77541 PMIC MFD DRIVER
 M:	Okan Sahin <okan.sahin@analog.com>
 L:	linux-kernel@vger.kernel.org
 S:	Maintained
+F:	Documentation/devicetree/bindings/mfd/adi,max77541.yaml
 F:	drivers/mfd/max77541.c
 F:	include/linux/mfd/max77541.h
 
-- 
2.30.2

Re: [PATCH v2 2/5] dt-bindings: mfd: adi,max77541.yaml Add MAX77541 bindings

[Krzysztof Kozlowski]

On 26/12/2022 23:38, Okan Sahin wrote:
> The bindings for MAX77541 MFD driver. It also


1. You did not follow entirely my advice here. Read again what I asked
you to fix in commit msg.

2. No improvements in subject - ignored comment.


> includes MAX77540 driver whose regmap is covered by MAX77541.
> 
> Signed-off-by: Okan Sahin <okan.sahin@analog.com>
> ---
>  .../devicetree/bindings/mfd/adi,max77541.yaml | 102 ++++++++++++++++++
>  MAINTAINERS                                   |   1 +
>  2 files changed, 103 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mfd/adi,max77541.yaml
> 
> diff --git a/Documentation/devicetree/bindings/mfd/adi,max77541.yaml b/Documentation/devicetree/bindings/mfd/adi,max77541.yaml
> new file mode 100644
> index 000000000000..50f93cb0bb66
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/adi,max77541.yaml
> @@ -0,0 +1,102 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mfd/adi,max77541.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: MAX77540/MAX77541 PMIC from ADI.

Drop tralling full stop.

> +
> +maintainers:
> +  - Okan Sahin <okan.sahin@analog.com>
> +
> +description: |
> +  MAX77540 is a Power Management IC with 2 buck regulators.
> +
> +  MAX77541 is a Power Management IC with 2 buck regulators and 1 ADC.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - adi,max77540
> +      - adi,max77541
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  regulators:
> +    $ref: ../regulator/adi,max77541-regulator.yaml#

Wrong path - it should be full path with /schemas/ just like it was last
time. However such file does not exist, so again as I said - you did not
test this patch. It's non-bisectable patchset. Order it properly. don't
ignore the comments.

> +
> +  adc:
> +    type: object
> +    additionalProperties: false
> +    properties:
> +      compatible:
> +        const: adi,max77541-adc

This is a friendly reminder during the review process.

It seems my previous comments were not fully addressed. Maybe my
feedback got lost between the quotes, maybe you just forgot to apply it.
Please go back to the previous discussion and either implement all
requested changes or keep discussing them.

Thank you.

> +
> +    required:
> +      - compatible
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +
> +allOf:
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: adi,max77540
> +    then:
> +      properties:
> +        regulator:
> +          properties:
> +            compatible:
> +              const: adi,max77540-regulator
> +    else:
> +      properties:
> +        regulator:
> +          properties:
> +            compatible:
> +              const: adi,max77541-regulator
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +
> +    i2c {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        pmic@69 {
> +            compatible = "adi,max77541";
> +            reg = <0x69>;
> +            interrupt-parent = <&gpio>;
> +            interrupts = <16 IRQ_TYPE_EDGE_FALLING>;
> +
> +            regulators {
> +                BUCK1 {
> +                    regulator-min-microvolt = <500000>;
> +                    regulator-max-microvolt = <5200000>;
> +                    regulator-boot-on;
> +                    regulator-always-on;
> +                };
> +                BUCK2 {
> +                    regulator-min-microvolt = <500000>;
> +                    regulator-max-microvolt = <5200000>;
> +                    regulator-boot-on;
> +                    regulator-always-on;
> +                };
> +            };
> +
> +            adc {
> +                compatible = "adi,max77541-adc";
> +            };
> +        };
> +    };
> +

Stray new line. Drop it.

Best regards,
Krzysztof

RE: [PATCH v2 2/5] dt-bindings: mfd: adi,max77541.yaml Add MAX77541 bindings

[Sahin, Okan]

Hi Krzysztof,

Thank you for your feedback and efforts. I apologize for some missing points of v2 patch. I tried to do my best. I will be more careful to fix all feedback before sending new patch so I want to ask a few things before sending v3 patch

On Tue, 27 Dec 2022 10:54 AM
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> wrote:

> On 26/12/2022 23:38, Okan Sahin wrote:
> > The bindings for MAX77541 MFD driver. It also
> 
> 
> 1. You did not follow entirely my advice here. Read again what I asked you to fix
> in commit msg.
> 
> 2. No improvements in subject - ignored comment.
> 
> 
> > includes MAX77540 driver whose regmap is covered by MAX77541.
> >
> > Signed-off-by: Okan Sahin <okan.sahin@analog.com>
> > ---
> >  .../devicetree/bindings/mfd/adi,max77541.yaml | 102 ++++++++++++++++++
> >  MAINTAINERS                                   |   1 +
> >  2 files changed, 103 insertions(+)
> >  create mode 100644
> > Documentation/devicetree/bindings/mfd/adi,max77541.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/mfd/adi,max77541.yaml
> > b/Documentation/devicetree/bindings/mfd/adi,max77541.yaml
> > new file mode 100644
> > index 000000000000..50f93cb0bb66
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/mfd/adi,max77541.yaml
> > @@ -0,0 +1,102 @@
> > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause %YAML 1.2
> > +---
> > +$id:
> > +https://urldefense.com/v3/__http://devicetree.org/schemas/mfd/adi,max
> >
> +77541.yaml*__;Iw!!A3Ni8CS0y2Y!5i9A0O1bNDHqRib46J285KCGbVLbqULqRRa
> 153Q
> > +XIaclV3BEUrMbK0XAuXk3meed6XG3y7HigRu81P9dqjnUsb9S3g2t$
> > +$schema:
> > +https://urldefense.com/v3/__http://devicetree.org/meta-schemas/core.y
> >
> +aml*__;Iw!!A3Ni8CS0y2Y!5i9A0O1bNDHqRib46J285KCGbVLbqULqRRa153QXIa
> clV3
> > +BEUrMbK0XAuXk3meed6XG3y7HigRu81P9dqjnUsRlxWY6o$
> > +
> > +title: MAX77540/MAX77541 PMIC from ADI.
> 
> Drop tralling full stop.
> 
> > +
> > +maintainers:
> > +  - Okan Sahin <okan.sahin@analog.com>
> > +
> > +description: |
> > +  MAX77540 is a Power Management IC with 2 buck regulators.
> > +
> > +  MAX77541 is a Power Management IC with 2 buck regulators and 1 ADC.
> > +
> > +properties:
> > +  compatible:
> > +    enum:
> > +      - adi,max77540
> > +      - adi,max77541
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  interrupts:
> > +    maxItems: 1
> > +
> > +  regulators:
> > +    $ref: ../regulator/adi,max77541-regulator.yaml#
> 
> Wrong path - it should be full path with /schemas/ just like it was last time.
> However such file does not exist, so again as I said - you did not test this patch.
> It's non-bisectable patchset. Order it properly. don't ignore the comments.
> 
> > +
> > +  adc:
> > +    type: object
> > +    additionalProperties: false
> > +    properties:
> > +      compatible:
> > +        const: adi,max77541-adc
> 
> This is a friendly reminder during the review process.
> 
> It seems my previous comments were not fully addressed. Maybe my feedback
> got lost between the quotes, maybe you just forgot to apply it.
> Please go back to the previous discussion and either implement all requested
> changes or keep discussing them.
> 
> Thank you.
Honestly, I don't quite understand what you're suggesting regarding the adc part. I thought I should add the adc as an object since it is in the mfd device. Do I need to remove this part?
> 
> > +
> > +    required:
> > +      - compatible
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - interrupts
> > +
> > +allOf:
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            const: adi,max77540
> > +    then:
> > +      properties:
> > +        regulator:
> > +          properties:
> > +            compatible:
> > +              const: adi,max77540-regulator
> > +    else:
> > +      properties:
> > +        regulator:
> > +          properties:
> > +            compatible:
> > +              const: adi,max77541-regulator
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/interrupt-controller/irq.h>
> > +
> > +    i2c {
> > +        #address-cells = <1>;
> > +        #size-cells = <0>;
> > +
> > +        pmic@69 {
> > +            compatible = "adi,max77541";
> > +            reg = <0x69>;
> > +            interrupt-parent = <&gpio>;
> > +            interrupts = <16 IRQ_TYPE_EDGE_FALLING>;
> > +
> > +            regulators {
> > +                BUCK1 {
> > +                    regulator-min-microvolt = <500000>;
> > +                    regulator-max-microvolt = <5200000>;
> > +                    regulator-boot-on;
> > +                    regulator-always-on;
> > +                };
> > +                BUCK2 {
> > +                    regulator-min-microvolt = <500000>;
> > +                    regulator-max-microvolt = <5200000>;
> > +                    regulator-boot-on;
> > +                    regulator-always-on;
> > +                };
> > +            };
> > +
> > +            adc {
> > +                compatible = "adi,max77541-adc";
> > +            };
> > +        };
> > +    };
> > +
> 
> Stray new line. Drop it.
> 
> Best regards,
> Krzysztof
Best regards,
Okan

Re: [PATCH v2 2/5] dt-bindings: mfd: adi,max77541.yaml Add MAX77541 bindings

[Krzysztof Kozlowski]

On 15/01/2023 18:40, Sahin, Okan wrote:
> Hi Krzysztof,
> 
> Thank you for your feedback and efforts. I apologize for some missing points of v2 patch. I tried to do my best. I will be more careful to fix all feedback before sending new patch so I want to ask a few things before sending v3 patch

Please wrap lines in your email.

(...)

>>> +
>>> +  adc:
>>> +    type: object
>>> +    additionalProperties: false
>>> +    properties:
>>> +      compatible:
>>> +        const: adi,max77541-adc
>>
>> This is a friendly reminder during the review process.
>>
>> It seems my previous comments were not fully addressed. Maybe my feedback
>> got lost between the quotes, maybe you just forgot to apply it.
>> Please go back to the previous discussion and either implement all requested
>> changes or keep discussing them.
>>
>> Thank you.
> Honestly, I don't quite understand what you're suggesting regarding the adc part. I thought I should add the adc as an object since it is in the mfd device. Do I need to remove this part?

What is unclear in my comment from v1? Yes, you need to remove it
because it useless. There is no need for a node consisting of only
compatible. Your driver does not need the DT node at all to do its job.

Best regards,
Krzysztof

Re: [PATCH v2 2/5] dt-bindings: mfd: adi,max77541.yaml Add MAX77541 bindings

[Rob Herring]

On Tue, 27 Dec 2022 01:38:36 +0300, Okan Sahin wrote:
> The bindings for MAX77541 MFD driver. It also
> includes MAX77540 driver whose regmap is covered by MAX77541.
> 
> Signed-off-by: Okan Sahin <okan.sahin@analog.com>
> ---
>  .../devicetree/bindings/mfd/adi,max77541.yaml | 102 ++++++++++++++++++
>  MAINTAINERS                                   |   1 +
>  2 files changed, 103 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mfd/adi,max77541.yaml
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
./Documentation/devicetree/bindings/mfd/adi,max77541.yaml: Unable to find schema file matching $id: http://devicetree.org/schemas/regulator/adi,max77541-regulator.yaml
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/mfd/adi,max77541.example.dtb: pmic@69: regulators: False schema does not allow {'BUCK1': {'regulator-min-microvolt': [[500000]], 'regulator-max-microvolt': [[5200000]], 'regulator-boot-on': True, 'regulator-always-on': True}, 'BUCK2': {'regulator-min-microvolt': [[500000]], 'regulator-max-microvolt': [[5200000]], 'regulator-boot-on': True, 'regulator-always-on': True}}
	From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/mfd/adi,max77541.yaml

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20221226223839.103460-3-okan.sahin@analog.com

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.

[PATCH v2 3/5] drivers: regulator: Add MAX77541 Regulator Support

[Okan Sahin]

Regulator driver for both MAX77541 and MAX77540.
The MAX77541 is a high-efficiency step-down converter
with two 3A switching phases for single-cell Li+ battery
and 5VDC systems.

The MAX77540 is a high-efficiency step-down converter
with two 3A switching phases.

Signed-off-by: Okan Sahin <okan.sahin@analog.com>
---
 MAINTAINERS                            |   1 +
 drivers/regulator/Kconfig              |   9 ++
 drivers/regulator/Makefile             |   1 +
 drivers/regulator/max77541-regulator.c | 161 +++++++++++++++++++++++++
 4 files changed, 172 insertions(+)
 create mode 100644 drivers/regulator/max77541-regulator.c

diff --git a/MAINTAINERS b/MAINTAINERS
index 22f5a9c490e3..5704ed5afce3 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12503,6 +12503,7 @@ L:	linux-kernel@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/mfd/adi,max77541.yaml
 F:	drivers/mfd/max77541.c
+F:	drivers/regulator/max77541-regulator.c
 F:	include/linux/mfd/max77541.h
 
 MAXIM MAX77650 PMIC MFD DRIVER
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 070e4403c6c2..1e416c195af9 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -556,6 +556,15 @@ config REGULATOR_MAX597X
 	  The MAX5970/5978 is a smart switch with no output regulation, but
 	  fault protection and voltage and current monitoring capabilities.
 
+config REGULATOR_MAX77541
+	tristate "Analog Devices MAX77541/77540 Regulator"
+	depends on MFD_MAX77541
+	help
+	  This driver controls a Analog Devices MAX77541/77540 regulators
+	  via I2C bus. Both MAX77540 and MAX77541 are dual-phase
+	  high-efficiency buck converter. Say Y here to
+	  enable the regulator driver.
+
 config REGULATOR_MAX77620
 	tristate "Maxim 77620/MAX20024 voltage regulator"
 	depends on MFD_MAX77620 || COMPILE_TEST
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 5962307e1130..c19efc7cfbef 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -68,6 +68,7 @@ obj-$(CONFIG_REGULATOR_LTC3676) += ltc3676.o
 obj-$(CONFIG_REGULATOR_MAX14577) += max14577-regulator.o
 obj-$(CONFIG_REGULATOR_MAX1586) += max1586.o
 obj-$(CONFIG_REGULATOR_MAX597X) += max597x-regulator.o
+obj-$(CONFIG_REGULATOR_MAX77541) += max77541-regulator.o
 obj-$(CONFIG_REGULATOR_MAX77620) += max77620-regulator.o
 obj-$(CONFIG_REGULATOR_MAX77650) += max77650-regulator.o
 obj-$(CONFIG_REGULATOR_MAX8649)	+= max8649.o
diff --git a/drivers/regulator/max77541-regulator.c b/drivers/regulator/max77541-regulator.c
new file mode 100644
index 000000000000..c1c5dba50ca2
--- /dev/null
+++ b/drivers/regulator/max77541-regulator.c
@@ -0,0 +1,161 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2022 Analog Devices, Inc.
+ * ADI Regulator driver for the MAX77540 and MAX77541
+ */
+
+#include <linux/i2c.h>
+#include <linux/mfd/max77541.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/of_regulator.h>
+
+static const struct regulator_ops max77541_buck_ops = {
+	.enable			= regulator_enable_regmap,
+	.disable		= regulator_disable_regmap,
+	.is_enabled		= regulator_is_enabled_regmap,
+	.list_voltage		= regulator_list_voltage_pickable_linear_range,
+	.get_voltage_sel	= regulator_get_voltage_sel_pickable_regmap,
+	.set_voltage_sel	= regulator_set_voltage_sel_pickable_regmap,
+};
+
+static const struct linear_range max77540_buck_ranges[] = {
+	/* Ranges when VOLT_SEL bits are 0x00 */
+	REGULATOR_LINEAR_RANGE(500000, 0x00, 0x8B, 5000),
+	REGULATOR_LINEAR_RANGE(1200000, 0x8C, 0xFF, 0),
+	/* Ranges when VOLT_SEL bits are 0x40 */
+	REGULATOR_LINEAR_RANGE(1200000, 0x00, 0x8B, 10000),
+	REGULATOR_LINEAR_RANGE(2400000, 0x8C, 0xFF, 0),
+	/* Ranges when VOLT_SEL bits are  0x80 */
+	REGULATOR_LINEAR_RANGE(2000000, 0x00, 0x9F, 20000),
+	REGULATOR_LINEAR_RANGE(5200000, 0xA0, 0xFF, 0),
+};
+
+static const struct linear_range max77541_buck_ranges[] = {
+	/* Ranges when VOLT_SEL bits are 0x00 */
+	REGULATOR_LINEAR_RANGE(300000, 0x00, 0xB3, 5000),
+	REGULATOR_LINEAR_RANGE(1200000, 0xB4, 0xFF, 0),
+	/* Ranges when VOLT_SEL bits are 0x40 */
+	REGULATOR_LINEAR_RANGE(1200000, 0x00, 0x8B, 10000),
+	REGULATOR_LINEAR_RANGE(2400000, 0x8C, 0xFF, 0),
+	/* Ranges when VOLT_SEL bits are  0x80 */
+	REGULATOR_LINEAR_RANGE(2000000, 0x00, 0x9F, 20000),
+	REGULATOR_LINEAR_RANGE(5200000, 0xA0, 0xFF, 0),
+};
+
+static const unsigned int max77541_buck_volt_range_sel[] = {
+	0x00, 0x00, 0x40, 0x40, 0x80, 0x80,
+};
+
+#define MAX77540_BUCK(_id, _ops)					\
+	{	.id = MAX77541_BUCK ## _id,				\
+		.name = "BUCK"#_id,					\
+		.of_match = "BUCK"#_id,					\
+		.regulators_node = "regulators",			\
+		.enable_reg = MAX77541_REG_EN_CTRL,			\
+		.enable_mask = MAX77541_BIT_M ## _id ## _EN,		\
+		.ops = &(_ops),						\
+		.type = REGULATOR_VOLTAGE,				\
+		.linear_ranges = max77540_buck_ranges,			\
+		.n_linear_ranges = ARRAY_SIZE(max77540_buck_ranges),	\
+		.vsel_reg = MAX77541_REG_M ## _id ## _VOUT,		\
+		.vsel_mask = MAX77541_BITS_MX_VOUT,			\
+		.vsel_range_reg = MAX77541_REG_M ## _id ## _CFG1,	\
+		.vsel_range_mask = MAX77541_BITS_MX_CFG1_RNG,		\
+		.linear_range_selectors = max77541_buck_volt_range_sel, \
+		.owner = THIS_MODULE,					\
+	}
+
+#define MAX77541_BUCK(_id, _ops)					\
+	{	.id = MAX77541_BUCK ## _id,				\
+		.name = "BUCK"#_id,					\
+		.of_match = "BUCK"#_id,					\
+		.regulators_node = "regulators",			\
+		.enable_reg = MAX77541_REG_EN_CTRL,			\
+		.enable_mask = MAX77541_BIT_M ## _id ## _EN,		\
+		.ops = &(_ops),						\
+		.type = REGULATOR_VOLTAGE,				\
+		.linear_ranges = max77541_buck_ranges,			\
+		.n_linear_ranges = ARRAY_SIZE(max77541_buck_ranges),	\
+		.vsel_reg = MAX77541_REG_M ## _id ## _VOUT,		\
+		.vsel_mask = MAX77541_BITS_MX_VOUT,			\
+		.vsel_range_reg = MAX77541_REG_M ## _id ## _CFG1,	\
+		.vsel_range_mask = MAX77541_BITS_MX_CFG1_RNG,		\
+		.linear_range_selectors = max77541_buck_volt_range_sel, \
+		.owner = THIS_MODULE,					\
+	}
+
+static const struct regulator_desc max77540_regulators_desc[] = {
+	MAX77540_BUCK(1, max77541_buck_ops),
+	MAX77540_BUCK(2, max77541_buck_ops),
+};
+
+static const struct regulator_desc max77541_regulators_desc[] = {
+	MAX77541_BUCK(1, max77541_buck_ops),
+	MAX77541_BUCK(2, max77541_buck_ops),
+};
+
+static int max77541_regulator_probe(struct platform_device *pdev)
+{
+	struct max77541_dev *max77541 = dev_get_drvdata(pdev->dev.parent);
+	struct regulator_config config = {};
+	const struct regulator_desc *desc;
+	struct device *dev = &pdev->dev;
+	struct regulator_dev *rdev;
+	int i;
+
+	config.dev = pdev->dev.parent;
+
+	if (max77541->id == MAX77540)
+		desc = max77540_regulators_desc;
+	else if (max77541->id == MAX77541)
+		desc = max77541_regulators_desc;
+	else
+		return -EINVAL;
+
+	for (i = 0; i < MAX77541_MAX_REGULATORS; i++) {
+		rdev = devm_regulator_register(dev,
+					       &desc[i], &config);
+		if (IS_ERR(rdev))
+			return dev_err_probe(dev, PTR_ERR(rdev),
+					     "Failed to register regulator\n");
+		break;
+	}
+
+	return 0;
+}
+
+static const struct platform_device_id max77541_regulator_platform_id[] = {
+	{ "max77540-regulator", MAX77540 },
+	{ "max77541-regulator", MAX77541 },
+	{  /* sentinel */  }
+};
+MODULE_DEVICE_TABLE(platform, max77541_regulator_platform_id);
+
+static const struct of_device_id max77541_regulator_of_id[] = {
+	{
+		.compatible = "adi,max77540-regulator",
+		.data = (void *)MAX77540,
+	},
+	{
+		.compatible = "adi,max77541-regulator",
+		.data = (void *)MAX77541,
+	},
+	{ /* sentinel */  }
+};
+MODULE_DEVICE_TABLE(of, max77541_regulator_of_id);
+
+static struct platform_driver max77541_regulator_driver = {
+	.driver = {
+		.name = "max77541-regulator",
+		.of_match_table = max77541_regulator_of_id,
+	},
+	.probe = max77541_regulator_probe,
+	.id_table = max77541_regulator_platform_id,
+};
+module_platform_driver(max77541_regulator_driver);
+
+MODULE_AUTHOR("Okan Sahin <Okan.Sahin@analog.com>");
+MODULE_DESCRIPTION("MAX77540/MAX77541 regulator driver");
+MODULE_LICENSE("GPL");
-- 
2.30.2

[PATCH v2 4/5] dt-bindings: regulator: adi,max77541-regulator.yaml Add MAX77541 Regulator bindings

[Okan Sahin]

The bindings for MAX77541 and MAX77540
regulator drivers.

Signed-off-by: Okan Sahin <okan.sahin@analog.com>
---
 .../regulator/adi,max77541-regulator.yaml     | 44 +++++++++++++++++++
 MAINTAINERS                                   |  1 +
 2 files changed, 45 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/adi,max77541-regulator.yaml

diff --git a/Documentation/devicetree/bindings/regulator/adi,max77541-regulator.yaml b/Documentation/devicetree/bindings/regulator/adi,max77541-regulator.yaml
new file mode 100644
index 000000000000..67d48bfcb627
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/adi,max77541-regulator.yaml
@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/adi,max77541-regulator.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Buck Converter for MAX77540/MAX77541
+
+maintainers:
+  - Okan Sahin <okan.sahin@analog.com>
+
+description: |
+  This is a part of device tree bindings for ADI MAX77540/MAX77541
+
+  The buck converter is represented as a sub-node of the PMIC node on the device tree.
+
+  The device has two buck regulators.
+  See also Documentation/devicetree/bindings/mfd/adi,max77541.yaml for
+  additional information and example.
+
+properties:
+  compatible:
+    enum:
+      - adi,max77540-regulator
+      - adi,max77541-regulator
+
+patternProperties:
+  "^BUCK[12]$":
+    type: object
+    $ref: regulator.yaml#
+    additionalProperties: false
+    description: |
+      Buck regulator.
+
+    properties:
+      regulator-name: true
+      regulator-always-on: true
+      regulator-boot-on: true
+      regulator-min-microvolt:
+        minimum: 300000
+      regulator-max-microvolt:
+        maximum: 5200000
+
+additionalProperties: false
diff --git a/MAINTAINERS b/MAINTAINERS
index 5704ed5afce3..8e5572b28a8c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12502,6 +12502,7 @@ M:	Okan Sahin <okan.sahin@analog.com>
 L:	linux-kernel@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/mfd/adi,max77541.yaml
+F:	Documentation/devicetree/bindings/regulator/adi,max77541.yaml
 F:	drivers/mfd/max77541.c
 F:	drivers/regulator/max77541-regulator.c
 F:	include/linux/mfd/max77541.h
-- 
2.30.2

Re: [PATCH v2 4/5] dt-bindings: regulator: adi,max77541-regulator.yaml Add MAX77541 Regulator bindings

[Krzysztof Kozlowski]

On 26/12/2022 23:38, Okan Sahin wrote:
> The bindings for MAX77541 and MAX77540
> regulator drivers.

1. Again:
https://elixir.bootlin.com/linux/v5.17.1/source/Documentation/process/submitting-patches.rst#L95

2. Please wrap commit message according to Linux coding style /
submission process (neither too early nor over the limit):
https://elixir.bootlin.com/linux/v5.18-rc4/source/Documentation/process/submitting-patches.rst#L586

3. Subject: drop second, redundant "bindings".


> 
> Signed-off-by: Okan Sahin <okan.sahin@analog.com>
> ---
>  .../regulator/adi,max77541-regulator.yaml     | 44 +++++++++++++++++++
>  MAINTAINERS                                   |  1 +
>  2 files changed, 45 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/regulator/adi,max77541-regulator.yaml
> 
> diff --git a/Documentation/devicetree/bindings/regulator/adi,max77541-regulator.yaml b/Documentation/devicetree/bindings/regulator/adi,max77541-regulator.yaml
> new file mode 100644
> index 000000000000..67d48bfcb627
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/regulator/adi,max77541-regulator.yaml
> @@ -0,0 +1,44 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/regulator/adi,max77541-regulator.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Buck Converter for MAX77540/MAX77541
> +
> +maintainers:
> +  - Okan Sahin <okan.sahin@analog.com>
> +
> +description: |
> +  This is a part of device tree bindings for ADI MAX77540/MAX77541
> +
> +  The buck converter is represented as a sub-node of the PMIC node on the device tree.
> +
> +  The device has two buck regulators.
> +  See also Documentation/devicetree/bindings/mfd/adi,max77541.yaml for
> +  additional information and example.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - adi,max77540-regulator
> +      - adi,max77541-regulator
> +
> +patternProperties:
> +  "^BUCK[12]$":

Old DT example was correct - lowercase node names.

Best regards,
Krzysztof

RE: [PATCH v2 4/5] dt-bindings: regulator: adi,max77541-regulator.yaml Add MAX77541 Regulator bindings

[Sahin, Okan]

Hi Krzysztof,

Thank you for your feedback and efforts. I also have a few question below.

On Tue, 27 Dec 2022 10:57 AM
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> wrote:

> On 26/12/2022 23:38, Okan Sahin wrote:
> > The bindings for MAX77541 and MAX77540 regulator drivers.
> 
> 1. Again:
> https://urldefense.com/v3/__https://elixir.bootlin.com/linux/v5.17.1/source/D
> ocumentation/process/submitting-
> patches.rst*L95__;Iw!!A3Ni8CS0y2Y!7nAM0w0tZiMzaqSFijTSs6_FiIcbPVz-
> n0BajxVC1WDh0GfsgL7XoVFoFToHza-Cy2_p8o0UEEc82BOnwgesjPcas_9m$
> 
> 2. Please wrap commit message according to Linux coding style / submission
> process (neither too early nor over the limit):
> https://urldefense.com/v3/__https://elixir.bootlin.com/linux/v5.18-
> rc4/source/Documentation/process/submitting-
> patches.rst*L586__;Iw!!A3Ni8CS0y2Y!7nAM0w0tZiMzaqSFijTSs6_FiIcbPVz-
> n0BajxVC1WDh0GfsgL7XoVFoFToHza-Cy2_p8o0UEEc82BOnwgesjE6sDUk6$
> 
> 3. Subject: drop second, redundant "bindings".
> 
> 
I will update like you suggest. Is there any command that you can advise to check format of commit is suitable or not by using check_patch?
I just added checkpatch into .git/hooks/post-commit file.
> >
> > Signed-off-by: Okan Sahin <okan.sahin@analog.com>
> > ---
> >  .../regulator/adi,max77541-regulator.yaml     | 44 +++++++++++++++++++
> >  MAINTAINERS                                   |  1 +
> >  2 files changed, 45 insertions(+)
> >  create mode 100644
> > Documentation/devicetree/bindings/regulator/adi,max77541-regulator.yam
> > l
> >
> > diff --git
> > a/Documentation/devicetree/bindings/regulator/adi,max77541-regulator.y
> > aml
> > b/Documentation/devicetree/bindings/regulator/adi,max77541-regulator.y
> > aml
> > new file mode 100644
> > index 000000000000..67d48bfcb627
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/regulator/adi,max77541-regulat
> > +++ or.yaml
> > @@ -0,0 +1,44 @@
> > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause %YAML 1.2
> > +---
> > +$id:
> > +https://urldefense.com/v3/__http://devicetree.org/schemas/regulator/a
> > +di,max77541-
> regulator.yaml*__;Iw!!A3Ni8CS0y2Y!7nAM0w0tZiMzaqSFijTSs6_
> > +FiIcbPVz-n0BajxVC1WDh0GfsgL7XoVFoFToHza-
> Cy2_p8o0UEEc82BOnwgesjKsOQbIb
> > +$
> > +$schema:
> > +https://urldefense.com/v3/__http://devicetree.org/meta-schemas/core.y
> > +aml*__;Iw!!A3Ni8CS0y2Y!7nAM0w0tZiMzaqSFijTSs6_FiIcbPVz-
> n0BajxVC1WDh0G
> > +fsgL7XoVFoFToHza-Cy2_p8o0UEEc82BOnwgesjEgbPQFe$
> > +
> > +title: Buck Converter for MAX77540/MAX77541
> > +
> > +maintainers:
> > +  - Okan Sahin <okan.sahin@analog.com>
> > +
> > +description: |
> > +  This is a part of device tree bindings for ADI MAX77540/MAX77541
> > +
> > +  The buck converter is represented as a sub-node of the PMIC node on the
> device tree.
> > +
> > +  The device has two buck regulators.
> > +  See also Documentation/devicetree/bindings/mfd/adi,max77541.yaml
> > + for  additional information and example.
> > +
> > +properties:
> > +  compatible:
> > +    enum:
> > +      - adi,max77540-regulator
> > +      - adi,max77541-regulator
> > +
> > +patternProperties:
> > +  "^BUCK[12]$":
> 
> Old DT example was correct - lowercase node names.
Actually, I did not change this part of the patch. I checked other examples, and it looks like using upper case under regulators node seems correct to me. Additionally, there is no warning or error after "make dt_binding_check".
> 
> Best regards,
> Krzysztof

Best regards,
Okan

Re: [PATCH v2 4/5] dt-bindings: regulator: adi,max77541-regulator.yaml Add MAX77541 Regulator bindings

[Krzysztof Kozlowski]

On 15/01/2023 18:41, Sahin, Okan wrote:
>>> +patternProperties:
>>> +  "^BUCK[12]$":
>>
>> Old DT example was correct - lowercase node names.
> Actually, I did not change this part of the patch. I checked other examples, and it looks like using upper case under regulators node seems correct to me. Additionally, there is no warning or error after "make dt_binding_check".

What do you mean "correct"? The convention is simple - all node names
are lowercase. Why this is an exception?

Best regards,
Krzysztof

Re: [PATCH v2 4/5] dt-bindings: regulator: adi,max77541-regulator.yaml Add MAX77541 Regulator bindings

[kernel test robot]

[-- Attachment #1: Type: text/plain, Size: 1702 bytes --]

Hi Okan,

I love your patch! Perhaps something to improve:

[auto build test WARNING on lee-mfd/for-mfd-next]
[cannot apply to broonie-regulator/for-next jic23-iio/togreg linus/master lee-mfd/for-mfd-fixes v6.2-rc1 next-20221226]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Okan-Sahin/dt-bindings-mfd-adi-max77541-yaml-Add-MAX77541-bindings/20221227-073859
base:   https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git for-mfd-next
patch link:    https://lore.kernel.org/r/20221226223839.103460-5-okan.sahin%40analog.com
patch subject: [PATCH v2 4/5] dt-bindings: regulator: adi,max77541-regulator.yaml Add MAX77541 Regulator bindings
reproduce:
        # https://github.com/intel-lab-lkp/linux/commit/c0440d7413fa9e08ba585982ccd2f5da1d029c13
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Okan-Sahin/dt-bindings-mfd-adi-max77541-yaml-Add-MAX77541-bindings/20221227-073859
        git checkout c0440d7413fa9e08ba585982ccd2f5da1d029c13
        make menuconfig
        # enable CONFIG_COMPILE_TEST, CONFIG_WARN_MISSING_DOCUMENTS, CONFIG_WARN_ABI_ERRORS
        make htmldocs

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> Warning: MAINTAINERS references a file that doesn't exist: Documentation/devicetree/bindings/regulator/adi,max77541.yaml

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

[-- Attachment #2: config --]
[-- Type: text/plain, Size: 38869 bytes --]

#
# Automatically generated file; DO NOT EDIT.
# Linux/x86_64 6.1.0-rc1 Kernel Configuration
#
CONFIG_CC_VERSION_TEXT="gcc-11 (Debian 11.3.0-8) 11.3.0"
CONFIG_CC_IS_GCC=y
CONFIG_GCC_VERSION=110300
CONFIG_CLANG_VERSION=0
CONFIG_AS_IS_GNU=y
CONFIG_AS_VERSION=23900
CONFIG_LD_IS_BFD=y
CONFIG_LD_VERSION=23900
CONFIG_LLD_VERSION=0
CONFIG_CC_CAN_LINK=y
CONFIG_CC_CAN_LINK_STATIC=y
CONFIG_CC_HAS_ASM_GOTO_OUTPUT=y
CONFIG_CC_HAS_ASM_INLINE=y
CONFIG_CC_HAS_NO_PROFILE_FN_ATTR=y
CONFIG_PAHOLE_VERSION=123
CONFIG_IRQ_WORK=y
CONFIG_BUILDTIME_TABLE_SORT=y
CONFIG_THREAD_INFO_IN_TASK=y

#
# General setup
#
CONFIG_BROKEN_ON_SMP=y
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_COMPILE_TEST=y
# CONFIG_WERROR is not set
CONFIG_LOCALVERSION=""
CONFIG_BUILD_SALT=""
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_BZIP2=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_HAVE_KERNEL_XZ=y
CONFIG_HAVE_KERNEL_LZO=y
CONFIG_HAVE_KERNEL_LZ4=y
CONFIG_HAVE_KERNEL_ZSTD=y
CONFIG_KERNEL_GZIP=y
# CONFIG_KERNEL_BZIP2 is not set
# CONFIG_KERNEL_LZMA is not set
# CONFIG_KERNEL_XZ is not set
# CONFIG_KERNEL_LZO is not set
# CONFIG_KERNEL_LZ4 is not set
# CONFIG_KERNEL_ZSTD is not set
CONFIG_DEFAULT_INIT=""
CONFIG_DEFAULT_HOSTNAME="(none)"
# CONFIG_SYSVIPC is not set
# CONFIG_WATCH_QUEUE is not set
# CONFIG_CROSS_MEMORY_ATTACH is not set
# CONFIG_USELIB is not set
CONFIG_HAVE_ARCH_AUDITSYSCALL=y

#
# IRQ subsystem
#
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_HARDIRQS_SW_RESEND=y
CONFIG_IRQ_DOMAIN=y
CONFIG_IRQ_DOMAIN_HIERARCHY=y
CONFIG_GENERIC_IRQ_MATRIX_ALLOCATOR=y
CONFIG_GENERIC_IRQ_RESERVATION_MODE=y
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_SPARSE_IRQ=y
# end of IRQ subsystem

CONFIG_CLOCKSOURCE_WATCHDOG=y
CONFIG_ARCH_CLOCKSOURCE_INIT=y
CONFIG_CLOCKSOURCE_VALIDATE_LAST_CYCLE=y
CONFIG_GENERIC_TIME_VSYSCALL=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_GENERIC_CLOCKEVENTS_MIN_ADJUST=y
CONFIG_GENERIC_CMOS_UPDATE=y
CONFIG_HAVE_POSIX_CPU_TIMERS_TASK_WORK=y
CONFIG_POSIX_CPU_TIMERS_TASK_WORK=y

#
# Timers subsystem
#
CONFIG_HZ_PERIODIC=y
# CONFIG_NO_HZ_IDLE is not set
# CONFIG_NO_HZ is not set
# CONFIG_HIGH_RES_TIMERS is not set
CONFIG_CLOCKSOURCE_WATCHDOG_MAX_SKEW_US=100
# end of Timers subsystem

CONFIG_HAVE_EBPF_JIT=y
CONFIG_ARCH_WANT_DEFAULT_BPF_JIT=y

#
# BPF subsystem
#
# CONFIG_BPF_SYSCALL is not set
# end of BPF subsystem

CONFIG_PREEMPT_NONE_BUILD=y
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
# CONFIG_PREEMPT_DYNAMIC is not set

#
# CPU/Task time and stats accounting
#
CONFIG_TICK_CPU_ACCOUNTING=y
# CONFIG_VIRT_CPU_ACCOUNTING_GEN is not set
# CONFIG_IRQ_TIME_ACCOUNTING is not set
# CONFIG_BSD_PROCESS_ACCT is not set
# CONFIG_PSI is not set
# end of CPU/Task time and stats accounting

CONFIG_CPU_ISOLATION=y

#
# RCU Subsystem
#
CONFIG_TINY_RCU=y
# CONFIG_RCU_EXPERT is not set
CONFIG_SRCU=y
CONFIG_TINY_SRCU=y
# end of RCU Subsystem

# CONFIG_IKCONFIG is not set
# CONFIG_IKHEADERS is not set
CONFIG_LOG_BUF_SHIFT=17
CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=13
CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y

#
# Scheduler features
#
# end of Scheduler features

CONFIG_ARCH_SUPPORTS_NUMA_BALANCING=y
CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH=y
CONFIG_CC_HAS_INT128=y
CONFIG_CC_IMPLICIT_FALLTHROUGH="-Wimplicit-fallthrough=5"
CONFIG_GCC12_NO_ARRAY_BOUNDS=y
CONFIG_ARCH_SUPPORTS_INT128=y
# CONFIG_CGROUPS is not set
CONFIG_NAMESPACES=y
# CONFIG_UTS_NS is not set
# CONFIG_TIME_NS is not set
# CONFIG_USER_NS is not set
# CONFIG_PID_NS is not set
# CONFIG_CHECKPOINT_RESTORE is not set
# CONFIG_SCHED_AUTOGROUP is not set
# CONFIG_SYSFS_DEPRECATED is not set
# CONFIG_RELAY is not set
# CONFIG_BLK_DEV_INITRD is not set
# CONFIG_BOOT_CONFIG is not set
# CONFIG_INITRAMFS_PRESERVE_MTIME is not set
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=y
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
CONFIG_LD_ORPHAN_WARN=y
CONFIG_SYSCTL=y
CONFIG_SYSCTL_EXCEPTION_TRACE=y
CONFIG_HAVE_PCSPKR_PLATFORM=y
# CONFIG_EXPERT is not set
CONFIG_MULTIUSER=y
CONFIG_SGETMASK_SYSCALL=y
CONFIG_SYSFS_SYSCALL=y
CONFIG_FHANDLE=y
CONFIG_POSIX_TIMERS=y
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_PCSPKR_PLATFORM=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_FUTEX_PI=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
CONFIG_AIO=y
CONFIG_IO_URING=y
CONFIG_ADVISE_SYSCALLS=y
CONFIG_MEMBARRIER=y
CONFIG_KALLSYMS=y
CONFIG_KALLSYMS_BASE_RELATIVE=y
CONFIG_ARCH_HAS_MEMBARRIER_SYNC_CORE=y
CONFIG_RSEQ=y
# CONFIG_EMBEDDED is not set
CONFIG_HAVE_PERF_EVENTS=y

#
# Kernel Performance Events And Counters
#
CONFIG_PERF_EVENTS=y
# end of Kernel Performance Events And Counters

# CONFIG_PROFILING is not set
# end of General setup

CONFIG_64BIT=y
CONFIG_X86_64=y
CONFIG_X86=y
CONFIG_INSTRUCTION_DECODER=y
CONFIG_OUTPUT_FORMAT="elf64-x86-64"
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_MMU=y
CONFIG_ARCH_MMAP_RND_BITS_MIN=28
CONFIG_ARCH_MMAP_RND_BITS_MAX=32
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=8
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=16
CONFIG_GENERIC_ISA_DMA=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_BUG_RELATIVE_POINTERS=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_ARCH_HAS_CPU_RELAX=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_NR_GPIO=1024
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_AUDIT_ARCH=y
CONFIG_ARCH_SUPPORTS_UPROBES=y
CONFIG_FIX_EARLYCON_MEM=y
CONFIG_PGTABLE_LEVELS=4
CONFIG_CC_HAS_SANE_STACKPROTECTOR=y

#
# Processor type and features
#
# CONFIG_SMP is not set
CONFIG_X86_FEATURE_NAMES=y
CONFIG_X86_MPPARSE=y
# CONFIG_GOLDFISH is not set
# CONFIG_X86_CPU_RESCTRL is not set
# CONFIG_X86_EXTENDED_PLATFORM is not set
# CONFIG_SCHED_OMIT_FRAME_POINTER is not set
# CONFIG_HYPERVISOR_GUEST is not set
# CONFIG_MK8 is not set
# CONFIG_MPSC is not set
# CONFIG_MCORE2 is not set
# CONFIG_MATOM is not set
CONFIG_GENERIC_CPU=y
CONFIG_X86_INTERNODE_CACHE_SHIFT=6
CONFIG_X86_L1_CACHE_SHIFT=6
CONFIG_X86_TSC=y
CONFIG_X86_CMPXCHG64=y
CONFIG_X86_CMOV=y
CONFIG_X86_MINIMUM_CPU_FAMILY=64
CONFIG_X86_DEBUGCTLMSR=y
CONFIG_IA32_FEAT_CTL=y
CONFIG_X86_VMX_FEATURE_NAMES=y
CONFIG_CPU_SUP_INTEL=y
CONFIG_CPU_SUP_AMD=y
CONFIG_CPU_SUP_HYGON=y
CONFIG_CPU_SUP_CENTAUR=y
CONFIG_CPU_SUP_ZHAOXIN=y
CONFIG_HPET_TIMER=y
CONFIG_DMI=y
CONFIG_NR_CPUS_RANGE_BEGIN=1
CONFIG_NR_CPUS_RANGE_END=1
CONFIG_NR_CPUS_DEFAULT=1
CONFIG_NR_CPUS=1
CONFIG_UP_LATE_INIT=y
CONFIG_X86_LOCAL_APIC=y
CONFIG_X86_IO_APIC=y
# CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS is not set
# CONFIG_X86_MCE is not set

#
# Performance monitoring
#
# CONFIG_PERF_EVENTS_AMD_POWER is not set
# CONFIG_PERF_EVENTS_AMD_UNCORE is not set
# CONFIG_PERF_EVENTS_AMD_BRS is not set
# end of Performance monitoring

CONFIG_X86_16BIT=y
CONFIG_X86_ESPFIX64=y
CONFIG_X86_VSYSCALL_EMULATION=y
# CONFIG_X86_IOPL_IOPERM is not set
# CONFIG_MICROCODE is not set
# CONFIG_X86_MSR is not set
# CONFIG_X86_CPUID is not set
# CONFIG_X86_5LEVEL is not set
CONFIG_X86_DIRECT_GBPAGES=y
# CONFIG_AMD_MEM_ENCRYPT is not set
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_DEFAULT=y
CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000
# CONFIG_X86_CHECK_BIOS_CORRUPTION is not set
CONFIG_MTRR=y
# CONFIG_MTRR_SANITIZER is not set
CONFIG_X86_PAT=y
CONFIG_ARCH_USES_PG_UNCACHED=y
CONFIG_X86_UMIP=y
CONFIG_CC_HAS_IBT=y
# CONFIG_X86_KERNEL_IBT is not set
# CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS is not set
CONFIG_X86_INTEL_TSX_MODE_OFF=y
# CONFIG_X86_INTEL_TSX_MODE_ON is not set
# CONFIG_X86_INTEL_TSX_MODE_AUTO is not set
# CONFIG_HZ_100 is not set
CONFIG_HZ_250=y
# CONFIG_HZ_300 is not set
# CONFIG_HZ_1000 is not set
CONFIG_HZ=250
# CONFIG_KEXEC is not set
# CONFIG_CRASH_DUMP is not set
CONFIG_PHYSICAL_START=0x1000000
# CONFIG_RELOCATABLE is not set
CONFIG_PHYSICAL_ALIGN=0x200000
CONFIG_LEGACY_VSYSCALL_XONLY=y
# CONFIG_LEGACY_VSYSCALL_NONE is not set
# CONFIG_CMDLINE_BOOL is not set
CONFIG_MODIFY_LDT_SYSCALL=y
# CONFIG_STRICT_SIGALTSTACK_SIZE is not set
CONFIG_HAVE_LIVEPATCH=y
# end of Processor type and features

CONFIG_CC_HAS_SLS=y
CONFIG_CC_HAS_RETURN_THUNK=y
# CONFIG_SPECULATION_MITIGATIONS is not set
CONFIG_ARCH_HAS_ADD_PAGES=y
CONFIG_ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE=y

#
# Power management and ACPI options
#
# CONFIG_SUSPEND is not set
# CONFIG_PM is not set
CONFIG_ARCH_SUPPORTS_ACPI=y
# CONFIG_ACPI is not set

#
# CPU Frequency scaling
#
# CONFIG_CPU_FREQ is not set
# end of CPU Frequency scaling

#
# CPU Idle
#
# CONFIG_CPU_IDLE is not set
# end of CPU Idle
# end of Power management and ACPI options

#
# Bus options (PCI etc.)
#
CONFIG_ISA_DMA_API=y
# end of Bus options (PCI etc.)

#
# Binary Emulations
#
# CONFIG_IA32_EMULATION is not set
# CONFIG_X86_X32_ABI is not set
# end of Binary Emulations

CONFIG_HAVE_KVM=y
# CONFIG_VIRTUALIZATION is not set
CONFIG_AS_AVX512=y
CONFIG_AS_SHA1_NI=y
CONFIG_AS_SHA256_NI=y
CONFIG_AS_TPAUSE=y

#
# General architecture-dependent options
#
CONFIG_GENERIC_ENTRY=y
# CONFIG_JUMP_LABEL is not set
# CONFIG_STATIC_CALL_SELFTEST is not set
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_ARCH_USE_BUILTIN_BSWAP=y
CONFIG_HAVE_IOREMAP_PROT=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_OPTPROBES=y
CONFIG_HAVE_KPROBES_ON_FTRACE=y
CONFIG_ARCH_CORRECT_STACKTRACE_ON_KRETPROBE=y
CONFIG_HAVE_FUNCTION_ERROR_INJECTION=y
CONFIG_HAVE_NMI=y
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_TRACE_IRQFLAGS_NMI_SUPPORT=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_DMA_CONTIGUOUS=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_ARCH_HAS_FORTIFY_SOURCE=y
CONFIG_ARCH_HAS_SET_MEMORY=y
CONFIG_ARCH_HAS_SET_DIRECT_MAP=y
CONFIG_HAVE_ARCH_THREAD_STRUCT_WHITELIST=y
CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT=y
CONFIG_ARCH_WANTS_NO_INSTR=y
CONFIG_HAVE_ASM_MODVERSIONS=y
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
CONFIG_HAVE_RSEQ=y
CONFIG_HAVE_RUST=y
CONFIG_HAVE_FUNCTION_ARG_ACCESS_API=y
CONFIG_HAVE_HW_BREAKPOINT=y
CONFIG_HAVE_MIXED_BREAKPOINTS_REGS=y
CONFIG_HAVE_USER_RETURN_NOTIFIER=y
CONFIG_HAVE_PERF_EVENTS_NMI=y
CONFIG_HAVE_HARDLOCKUP_DETECTOR_PERF=y
CONFIG_HAVE_PERF_REGS=y
CONFIG_HAVE_PERF_USER_STACK_DUMP=y
CONFIG_HAVE_ARCH_JUMP_LABEL=y
CONFIG_HAVE_ARCH_JUMP_LABEL_RELATIVE=y
CONFIG_MMU_GATHER_MERGE_VMAS=y
CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y
CONFIG_HAVE_ALIGNED_STRUCT_PAGE=y
CONFIG_HAVE_CMPXCHG_LOCAL=y
CONFIG_HAVE_CMPXCHG_DOUBLE=y
CONFIG_HAVE_ARCH_SECCOMP=y
CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
# CONFIG_SECCOMP is not set
CONFIG_HAVE_ARCH_STACKLEAK=y
CONFIG_HAVE_STACKPROTECTOR=y
# CONFIG_STACKPROTECTOR is not set
CONFIG_ARCH_SUPPORTS_LTO_CLANG=y
CONFIG_ARCH_SUPPORTS_LTO_CLANG_THIN=y
CONFIG_LTO_NONE=y
CONFIG_ARCH_SUPPORTS_CFI_CLANG=y
CONFIG_HAVE_ARCH_WITHIN_STACK_FRAMES=y
CONFIG_HAVE_CONTEXT_TRACKING_USER=y
CONFIG_HAVE_CONTEXT_TRACKING_USER_OFFSTACK=y
CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
CONFIG_HAVE_MOVE_PUD=y
CONFIG_HAVE_MOVE_PMD=y
CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD=y
CONFIG_HAVE_ARCH_HUGE_VMAP=y
CONFIG_HAVE_ARCH_HUGE_VMALLOC=y
CONFIG_ARCH_WANT_HUGE_PMD_SHARE=y
CONFIG_HAVE_ARCH_SOFT_DIRTY=y
CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
CONFIG_MODULES_USE_ELF_RELA=y
CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK=y
CONFIG_HAVE_SOFTIRQ_ON_OWN_STACK=y
CONFIG_SOFTIRQ_ON_OWN_STACK=y
CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
CONFIG_HAVE_ARCH_MMAP_RND_BITS=y
CONFIG_HAVE_EXIT_THREAD=y
CONFIG_ARCH_MMAP_RND_BITS=28
CONFIG_PAGE_SIZE_LESS_THAN_64KB=y
CONFIG_PAGE_SIZE_LESS_THAN_256KB=y
CONFIG_HAVE_OBJTOOL=y
CONFIG_HAVE_JUMP_LABEL_HACK=y
CONFIG_HAVE_NOINSTR_HACK=y
CONFIG_HAVE_NOINSTR_VALIDATION=y
CONFIG_HAVE_UACCESS_VALIDATION=y
CONFIG_HAVE_STACK_VALIDATION=y
CONFIG_HAVE_RELIABLE_STACKTRACE=y
# CONFIG_COMPAT_32BIT_TIME is not set
CONFIG_HAVE_ARCH_VMAP_STACK=y
# CONFIG_VMAP_STACK is not set
CONFIG_HAVE_ARCH_RANDOMIZE_KSTACK_OFFSET=y
CONFIG_RANDOMIZE_KSTACK_OFFSET=y
# CONFIG_RANDOMIZE_KSTACK_OFFSET_DEFAULT is not set
CONFIG_ARCH_HAS_STRICT_KERNEL_RWX=y
CONFIG_STRICT_KERNEL_RWX=y
CONFIG_ARCH_HAS_STRICT_MODULE_RWX=y
CONFIG_HAVE_ARCH_PREL32_RELOCATIONS=y
CONFIG_ARCH_HAS_MEM_ENCRYPT=y
CONFIG_HAVE_STATIC_CALL=y
CONFIG_HAVE_STATIC_CALL_INLINE=y
CONFIG_HAVE_PREEMPT_DYNAMIC=y
CONFIG_HAVE_PREEMPT_DYNAMIC_CALL=y
CONFIG_ARCH_WANT_LD_ORPHAN_WARN=y
CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
CONFIG_ARCH_SUPPORTS_PAGE_TABLE_CHECK=y
CONFIG_ARCH_HAS_ELFCORE_COMPAT=y
CONFIG_ARCH_HAS_PARANOID_L1D_FLUSH=y
CONFIG_DYNAMIC_SIGFRAME=y
CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG=y

#
# GCOV-based kernel profiling
#
CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
# end of GCOV-based kernel profiling

CONFIG_HAVE_GCC_PLUGINS=y
# CONFIG_GCC_PLUGINS is not set
# end of General architecture-dependent options

CONFIG_RT_MUTEXES=y
CONFIG_BASE_SMALL=0
# CONFIG_MODULES is not set
CONFIG_BLOCK=y
# CONFIG_BLOCK_LEGACY_AUTOLOAD is not set
# CONFIG_BLK_DEV_BSGLIB is not set
# CONFIG_BLK_DEV_INTEGRITY is not set
# CONFIG_BLK_DEV_ZONED is not set
# CONFIG_BLK_WBT is not set
# CONFIG_BLK_SED_OPAL is not set
# CONFIG_BLK_INLINE_ENCRYPTION is not set

#
# Partition Types
#
# CONFIG_PARTITION_ADVANCED is not set
CONFIG_MSDOS_PARTITION=y
CONFIG_EFI_PARTITION=y
# end of Partition Types

#
# IO Schedulers
#
# CONFIG_MQ_IOSCHED_DEADLINE is not set
# CONFIG_MQ_IOSCHED_KYBER is not set
# CONFIG_IOSCHED_BFQ is not set
# end of IO Schedulers

CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
CONFIG_INLINE_READ_UNLOCK=y
CONFIG_INLINE_READ_UNLOCK_IRQ=y
CONFIG_INLINE_WRITE_UNLOCK=y
CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y
CONFIG_ARCH_USE_QUEUED_RWLOCKS=y
CONFIG_ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE=y
CONFIG_ARCH_HAS_SYNC_CORE_BEFORE_USERMODE=y
CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y

#
# Executable file formats
#
# CONFIG_BINFMT_ELF is not set
# CONFIG_BINFMT_SCRIPT is not set
# CONFIG_BINFMT_MISC is not set
CONFIG_COREDUMP=y
# end of Executable file formats

#
# Memory Management options
#
# CONFIG_SWAP is not set

#
# SLAB allocator options
#
# CONFIG_SLAB is not set
CONFIG_SLUB=y
# CONFIG_SLAB_MERGE_DEFAULT is not set
# CONFIG_SLAB_FREELIST_RANDOM is not set
# CONFIG_SLAB_FREELIST_HARDENED is not set
# CONFIG_SLUB_STATS is not set
# end of SLAB allocator options

# CONFIG_SHUFFLE_PAGE_ALLOCATOR is not set
# CONFIG_COMPAT_BRK is not set
CONFIG_SPARSEMEM=y
CONFIG_SPARSEMEM_EXTREME=y
CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
# CONFIG_SPARSEMEM_VMEMMAP is not set
CONFIG_HAVE_FAST_GUP=y
CONFIG_EXCLUSIVE_SYSTEM_RAM=y
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
# CONFIG_MEMORY_HOTPLUG is not set
CONFIG_SPLIT_PTLOCK_CPUS=4
CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y
# CONFIG_COMPACTION is not set
# CONFIG_PAGE_REPORTING is not set
CONFIG_PHYS_ADDR_T_64BIT=y
# CONFIG_KSM is not set
CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
CONFIG_ARCH_WANTS_THP_SWAP=y
# CONFIG_TRANSPARENT_HUGEPAGE is not set
CONFIG_NEED_PER_CPU_KM=y
CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y
CONFIG_HAVE_SETUP_PER_CPU_AREA=y
# CONFIG_CMA is not set
CONFIG_GENERIC_EARLY_IOREMAP=y
# CONFIG_IDLE_PAGE_TRACKING is not set
CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
CONFIG_ARCH_HAS_CURRENT_STACK_POINTER=y
CONFIG_ARCH_HAS_PTE_DEVMAP=y
CONFIG_ZONE_DMA=y
CONFIG_ZONE_DMA32=y
CONFIG_VM_EVENT_COUNTERS=y
# CONFIG_PERCPU_STATS is not set

#
# GUP_TEST needs to have DEBUG_FS enabled
#
CONFIG_ARCH_HAS_PTE_SPECIAL=y
CONFIG_SECRETMEM=y
# CONFIG_ANON_VMA_NAME is not set
# CONFIG_USERFAULTFD is not set
# CONFIG_LRU_GEN is not set

#
# Data Access Monitoring
#
# CONFIG_DAMON is not set
# end of Data Access Monitoring
# end of Memory Management options

# CONFIG_NET is not set

#
# Device Drivers
#
CONFIG_HAVE_EISA=y
# CONFIG_EISA is not set
CONFIG_HAVE_PCI=y
# CONFIG_PCI is not set
# CONFIG_PCCARD is not set

#
# Generic Driver Options
#
# CONFIG_UEVENT_HELPER is not set
# CONFIG_DEVTMPFS is not set
# CONFIG_STANDALONE is not set
# CONFIG_PREVENT_FIRMWARE_BUILD is not set

#
# Firmware loader
#
CONFIG_FW_LOADER=y
CONFIG_EXTRA_FIRMWARE=""
# CONFIG_FW_LOADER_USER_HELPER is not set
# CONFIG_FW_LOADER_COMPRESS is not set
# CONFIG_FW_UPLOAD is not set
# end of Firmware loader

CONFIG_ALLOW_DEV_COREDUMP=y
CONFIG_GENERIC_CPU_AUTOPROBE=y
CONFIG_GENERIC_CPU_VULNERABILITIES=y
# end of Generic Driver Options

#
# Bus devices
#
# CONFIG_ARM_INTEGRATOR_LM is not set
# CONFIG_BT1_APB is not set
# CONFIG_BT1_AXI is not set
# CONFIG_HISILICON_LPC is not set
# CONFIG_INTEL_IXP4XX_EB is not set
# CONFIG_QCOM_EBI2 is not set
# CONFIG_MHI_BUS is not set
# CONFIG_MHI_BUS_EP is not set
# end of Bus devices

#
# Firmware Drivers
#

#
# ARM System Control and Management Interface Protocol
#
# CONFIG_ARM_SCMI_PROTOCOL is not set
# end of ARM System Control and Management Interface Protocol

# CONFIG_EDD is not set
CONFIG_FIRMWARE_MEMMAP=y
# CONFIG_DMIID is not set
# CONFIG_DMI_SYSFS is not set
CONFIG_DMI_SCAN_MACHINE_NON_EFI_FALLBACK=y
# CONFIG_FW_CFG_SYSFS is not set
# CONFIG_SYSFB_SIMPLEFB is not set
# CONFIG_BCM47XX_NVRAM is not set
# CONFIG_GOOGLE_FIRMWARE is not set

#
# Tegra firmware driver
#
# end of Tegra firmware driver
# end of Firmware Drivers

# CONFIG_GNSS is not set
# CONFIG_MTD is not set
# CONFIG_OF is not set
CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
# CONFIG_PARPORT is not set
# CONFIG_BLK_DEV is not set

#
# NVME Support
#
# CONFIG_NVME_FC is not set
# end of NVME Support

#
# Misc devices
#
# CONFIG_DUMMY_IRQ is not set
# CONFIG_ATMEL_SSC is not set
# CONFIG_ENCLOSURE_SERVICES is not set
# CONFIG_QCOM_COINCELL is not set
# CONFIG_SRAM is not set
# CONFIG_XILINX_SDFEC is not set
# CONFIG_C2PORT is not set

#
# EEPROM support
#
# CONFIG_EEPROM_93CX6 is not set
# end of EEPROM support

#
# Texas Instruments shared transport line discipline
#
# end of Texas Instruments shared transport line discipline

#
# Altera FPGA firmware download module (requires I2C)
#
# CONFIG_ECHO is not set
# CONFIG_PVPANIC is not set
# end of Misc devices

#
# SCSI device support
#
CONFIG_SCSI_MOD=y
# CONFIG_RAID_ATTRS is not set
# CONFIG_SCSI is not set
# end of SCSI device support

# CONFIG_ATA is not set
# CONFIG_MD is not set
# CONFIG_TARGET_CORE is not set

#
# IEEE 1394 (FireWire) support
#
# CONFIG_FIREWIRE is not set
# end of IEEE 1394 (FireWire) support

# CONFIG_MACINTOSH_DRIVERS is not set

#
# Input device support
#
CONFIG_INPUT=y
# CONFIG_INPUT_FF_MEMLESS is not set
# CONFIG_INPUT_SPARSEKMAP is not set
# CONFIG_INPUT_MATRIXKMAP is not set

#
# Userland interfaces
#
# CONFIG_INPUT_MOUSEDEV is not set
# CONFIG_INPUT_JOYDEV is not set
# CONFIG_INPUT_EVDEV is not set
# CONFIG_INPUT_EVBUG is not set

#
# Input Device Drivers
#
# CONFIG_INPUT_KEYBOARD is not set
# CONFIG_INPUT_MOUSE is not set
# CONFIG_INPUT_JOYSTICK is not set
# CONFIG_INPUT_TABLET is not set
# CONFIG_INPUT_TOUCHSCREEN is not set
# CONFIG_INPUT_MISC is not set
# CONFIG_RMI4_CORE is not set

#
# Hardware I/O ports
#
# CONFIG_SERIO is not set
CONFIG_ARCH_MIGHT_HAVE_PC_SERIO=y
# CONFIG_GAMEPORT is not set
# end of Hardware I/O ports
# end of Input device support

#
# Character devices
#
CONFIG_TTY=y
CONFIG_VT=y
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_VT_CONSOLE=y
CONFIG_HW_CONSOLE=y
# CONFIG_VT_HW_CONSOLE_BINDING is not set
CONFIG_UNIX98_PTYS=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_LDISC_AUTOLOAD is not set

#
# Serial drivers
#
# CONFIG_SERIAL_8250 is not set

#
# Non-8250 serial port support
#
# CONFIG_SERIAL_AMBA_PL010 is not set
# CONFIG_SERIAL_MESON is not set
# CONFIG_SERIAL_CLPS711X is not set
# CONFIG_SERIAL_SAMSUNG is not set
# CONFIG_SERIAL_TEGRA is not set
# CONFIG_SERIAL_IMX is not set
# CONFIG_SERIAL_UARTLITE is not set
# CONFIG_SERIAL_SH_SCI is not set
# CONFIG_SERIAL_MSM is not set
# CONFIG_SERIAL_VT8500 is not set
# CONFIG_SERIAL_OMAP is not set
# CONFIG_SERIAL_LANTIQ is not set
# CONFIG_SERIAL_SCCNXP is not set
# CONFIG_SERIAL_TIMBERDALE is not set
# CONFIG_SERIAL_BCM63XX is not set
# CONFIG_SERIAL_ALTERA_JTAGUART is not set
# CONFIG_SERIAL_ALTERA_UART is not set
# CONFIG_SERIAL_MXS_AUART is not set
# CONFIG_SERIAL_MPS2_UART is not set
# CONFIG_SERIAL_ARC is not set
# CONFIG_SERIAL_FSL_LPUART is not set
# CONFIG_SERIAL_FSL_LINFLEXUART is not set
# CONFIG_SERIAL_ST_ASC is not set
# CONFIG_SERIAL_STM32 is not set
# CONFIG_SERIAL_OWL is not set
# CONFIG_SERIAL_RDA is not set
# CONFIG_SERIAL_LITEUART is not set
# CONFIG_SERIAL_SUNPLUS is not set
# end of Serial drivers

# CONFIG_SERIAL_NONSTANDARD is not set
# CONFIG_NULL_TTY is not set
# CONFIG_SERIAL_DEV_BUS is not set
# CONFIG_VIRTIO_CONSOLE is not set
# CONFIG_IPMI_HANDLER is not set
# CONFIG_ASPEED_KCS_IPMI_BMC is not set
# CONFIG_NPCM7XX_KCS_IPMI_BMC is not set
# CONFIG_HW_RANDOM is not set
# CONFIG_MWAVE is not set
# CONFIG_DEVMEM is not set
# CONFIG_NVRAM is not set
# CONFIG_HANGCHECK_TIMER is not set
# CONFIG_TCG_TPM is not set
# CONFIG_TELCLOCK is not set
# CONFIG_RANDOM_TRUST_CPU is not set
# CONFIG_RANDOM_TRUST_BOOTLOADER is not set
# end of Character devices

#
# I2C support
#
# CONFIG_I2C is not set
# end of I2C support

# CONFIG_I3C is not set
# CONFIG_SPI is not set
# CONFIG_SPMI is not set
# CONFIG_HSI is not set
# CONFIG_PPS is not set

#
# PTP clock support
#
CONFIG_PTP_1588_CLOCK_OPTIONAL=y

#
# Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks.
#
# end of PTP clock support

# CONFIG_PINCTRL is not set
# CONFIG_GPIOLIB is not set
# CONFIG_W1 is not set
# CONFIG_POWER_RESET is not set
# CONFIG_POWER_SUPPLY is not set
# CONFIG_HWMON is not set
# CONFIG_THERMAL is not set
# CONFIG_WATCHDOG is not set
CONFIG_SSB_POSSIBLE=y
# CONFIG_SSB is not set
CONFIG_BCMA_POSSIBLE=y
# CONFIG_BCMA is not set

#
# Multifunction device drivers
#
# CONFIG_MFD_SUN4I_GPADC is not set
# CONFIG_MFD_AT91_USART is not set
# CONFIG_MFD_MADERA is not set
# CONFIG_MFD_EXYNOS_LPASS is not set
# CONFIG_MFD_MXS_LRADC is not set
# CONFIG_MFD_MX25_TSADC is not set
# CONFIG_HTC_PASIC3 is not set
# CONFIG_MFD_KEMPLD is not set
# CONFIG_MFD_MT6397 is not set
# CONFIG_MFD_PM8XXX is not set
# CONFIG_MFD_SM501 is not set
# CONFIG_ABX500_CORE is not set
# CONFIG_MFD_SUN6I_PRCM is not set
# CONFIG_MFD_SYSCON is not set
# CONFIG_MFD_TI_AM335X_TSCADC is not set
# CONFIG_MFD_TQMX86 is not set
# CONFIG_MFD_STM32_LPTIMER is not set
# CONFIG_MFD_STM32_TIMERS is not set
# end of Multifunction device drivers

# CONFIG_REGULATOR is not set
# CONFIG_RC_CORE is not set

#
# CEC support
#
# CONFIG_MEDIA_CEC_SUPPORT is not set
# end of CEC support

# CONFIG_MEDIA_SUPPORT is not set

#
# Graphics support
#
# CONFIG_IMX_IPUV3_CORE is not set
# CONFIG_DRM is not set

#
# ARM devices
#
# end of ARM devices

#
# Frame buffer Devices
#
# CONFIG_FB is not set
# CONFIG_MMP_DISP is not set
# end of Frame buffer Devices

#
# Backlight & LCD device support
#
# CONFIG_LCD_CLASS_DEVICE is not set
# CONFIG_BACKLIGHT_CLASS_DEVICE is not set
# end of Backlight & LCD device support

#
# Console display driver support
#
CONFIG_VGA_CONSOLE=y
CONFIG_DUMMY_CONSOLE=y
CONFIG_DUMMY_CONSOLE_COLUMNS=80
CONFIG_DUMMY_CONSOLE_ROWS=25
# end of Console display driver support
# end of Graphics support

# CONFIG_SOUND is not set

#
# HID support
#
# CONFIG_HID is not set
# end of HID support

CONFIG_USB_OHCI_LITTLE_ENDIAN=y
# CONFIG_USB_SUPPORT is not set
# CONFIG_MMC is not set
# CONFIG_MEMSTICK is not set
# CONFIG_NEW_LEDS is not set
# CONFIG_ACCESSIBILITY is not set
CONFIG_EDAC_ATOMIC_SCRUB=y
CONFIG_EDAC_SUPPORT=y
CONFIG_RTC_LIB=y
CONFIG_RTC_MC146818_LIB=y
# CONFIG_RTC_CLASS is not set
# CONFIG_DMADEVICES is not set

#
# DMABUF options
#
# CONFIG_SYNC_FILE is not set
# CONFIG_DMABUF_HEAPS is not set
# end of DMABUF options

# CONFIG_AUXDISPLAY is not set
# CONFIG_UIO is not set
# CONFIG_VFIO is not set
# CONFIG_VIRT_DRIVERS is not set
# CONFIG_VIRTIO_MENU is not set
# CONFIG_VHOST_MENU is not set

#
# Microsoft Hyper-V guest support
#
# end of Microsoft Hyper-V guest support

# CONFIG_GREYBUS is not set
# CONFIG_COMEDI is not set
# CONFIG_STAGING is not set
# CONFIG_CHROME_PLATFORMS is not set
# CONFIG_MELLANOX_PLATFORM is not set
# CONFIG_OLPC_XO175 is not set
# CONFIG_SURFACE_PLATFORMS is not set
# CONFIG_X86_PLATFORM_DEVICES is not set
# CONFIG_COMMON_CLK is not set
# CONFIG_HWSPINLOCK is not set

#
# Clock Source drivers
#
CONFIG_CLKEVT_I8253=y
CONFIG_I8253_LOCK=y
CONFIG_CLKBLD_I8253=y
# CONFIG_BCM2835_TIMER is not set
# CONFIG_BCM_KONA_TIMER is not set
# CONFIG_DAVINCI_TIMER is not set
# CONFIG_DIGICOLOR_TIMER is not set
# CONFIG_OMAP_DM_TIMER is not set
# CONFIG_DW_APB_TIMER is not set
# CONFIG_FTTMR010_TIMER is not set
# CONFIG_IXP4XX_TIMER is not set
# CONFIG_MESON6_TIMER is not set
# CONFIG_OWL_TIMER is not set
# CONFIG_RDA_TIMER is not set
# CONFIG_SUN4I_TIMER is not set
# CONFIG_TEGRA_TIMER is not set
# CONFIG_VT8500_TIMER is not set
# CONFIG_NPCM7XX_TIMER is not set
# CONFIG_ASM9260_TIMER is not set
# CONFIG_CLKSRC_DBX500_PRCMU is not set
# CONFIG_CLPS711X_TIMER is not set
# CONFIG_MXS_TIMER is not set
# CONFIG_NSPIRE_TIMER is not set
# CONFIG_INTEGRATOR_AP_TIMER is not set
# CONFIG_CLKSRC_PISTACHIO is not set
# CONFIG_CLKSRC_STM32_LP is not set
# CONFIG_ARMV7M_SYSTICK is not set
# CONFIG_ATMEL_PIT is not set
# CONFIG_ATMEL_ST is not set
# CONFIG_CLKSRC_SAMSUNG_PWM is not set
# CONFIG_FSL_FTM_TIMER is not set
# CONFIG_OXNAS_RPS_TIMER is not set
# CONFIG_MTK_TIMER is not set
# CONFIG_SH_TIMER_CMT is not set
# CONFIG_SH_TIMER_MTU2 is not set
# CONFIG_RENESAS_OSTM is not set
# CONFIG_SH_TIMER_TMU is not set
# CONFIG_EM_TIMER_STI is not set
# CONFIG_CLKSRC_PXA is not set
# CONFIG_TIMER_IMX_SYS_CTR is not set
# CONFIG_CLKSRC_ST_LPC is not set
# CONFIG_GXP_TIMER is not set
# CONFIG_MSC313E_TIMER is not set
# CONFIG_MICROCHIP_PIT64B is not set
# end of Clock Source drivers

# CONFIG_MAILBOX is not set
# CONFIG_IOMMU_SUPPORT is not set

#
# Remoteproc drivers
#
# CONFIG_REMOTEPROC is not set
# end of Remoteproc drivers

#
# Rpmsg drivers
#
# CONFIG_RPMSG_VIRTIO is not set
# end of Rpmsg drivers

#
# SOC (System On Chip) specific Drivers
#

#
# Amlogic SoC drivers
#
# CONFIG_MESON_CANVAS is not set
# CONFIG_MESON_CLK_MEASURE is not set
# CONFIG_MESON_GX_SOCINFO is not set
# CONFIG_MESON_MX_SOCINFO is not set
# end of Amlogic SoC drivers

#
# Apple SoC drivers
#
# CONFIG_APPLE_SART is not set
# end of Apple SoC drivers

#
# ASPEED SoC drivers
#
# CONFIG_ASPEED_LPC_CTRL is not set
# CONFIG_ASPEED_LPC_SNOOP is not set
# CONFIG_ASPEED_UART_ROUTING is not set
# CONFIG_ASPEED_P2A_CTRL is not set
# CONFIG_ASPEED_SOCINFO is not set
# end of ASPEED SoC drivers

# CONFIG_AT91_SOC_ID is not set
# CONFIG_AT91_SOC_SFR is not set

#
# Broadcom SoC drivers
#
# CONFIG_SOC_BCM63XX is not set
# CONFIG_SOC_BRCMSTB is not set
# end of Broadcom SoC drivers

#
# NXP/Freescale QorIQ SoC drivers
#
# end of NXP/Freescale QorIQ SoC drivers

#
# fujitsu SoC drivers
#
# end of fujitsu SoC drivers

#
# i.MX SoC drivers
#
# CONFIG_SOC_IMX8M is not set
# CONFIG_SOC_IMX9 is not set
# end of i.MX SoC drivers

#
# IXP4xx SoC drivers
#
# CONFIG_IXP4XX_QMGR is not set
# CONFIG_IXP4XX_NPE is not set
# end of IXP4xx SoC drivers

#
# Enable LiteX SoC Builder specific drivers
#
# CONFIG_LITEX_SOC_CONTROLLER is not set
# end of Enable LiteX SoC Builder specific drivers

#
# MediaTek SoC drivers
#
# CONFIG_MTK_CMDQ is not set
# CONFIG_MTK_DEVAPC is not set
# CONFIG_MTK_INFRACFG is not set
# CONFIG_MTK_MMSYS is not set
# end of MediaTek SoC drivers

#
# Qualcomm SoC drivers
#
# CONFIG_QCOM_GENI_SE is not set
# CONFIG_QCOM_GSBI is not set
# CONFIG_QCOM_LLCC is not set
# CONFIG_QCOM_RPMH is not set
# CONFIG_QCOM_SPM is not set
# CONFIG_QCOM_ICC_BWMON is not set
# end of Qualcomm SoC drivers

# CONFIG_SOC_RENESAS is not set
# CONFIG_ROCKCHIP_GRF is not set
# CONFIG_SOC_SAMSUNG is not set
# CONFIG_SOC_TI is not set
# CONFIG_UX500_SOC_ID is not set

#
# Xilinx SoC drivers
#
# end of Xilinx SoC drivers
# end of SOC (System On Chip) specific Drivers

# CONFIG_PM_DEVFREQ is not set
# CONFIG_EXTCON is not set
# CONFIG_MEMORY is not set
# CONFIG_IIO is not set
# CONFIG_PWM is not set

#
# IRQ chip support
#
# CONFIG_AL_FIC is not set
# CONFIG_RENESAS_INTC_IRQPIN is not set
# CONFIG_RENESAS_IRQC is not set
# CONFIG_RENESAS_RZA1_IRQC is not set
# CONFIG_RENESAS_RZG2L_IRQC is not set
# CONFIG_SL28CPLD_INTC is not set
# CONFIG_TS4800_IRQ is not set
# CONFIG_INGENIC_TCU_IRQ is not set
# CONFIG_IRQ_UNIPHIER_AIDET is not set
# CONFIG_MESON_IRQ_GPIO is not set
# CONFIG_IMX_IRQSTEER is not set
# CONFIG_IMX_INTMUX is not set
# CONFIG_EXYNOS_IRQ_COMBINER is not set
# CONFIG_MST_IRQ is not set
# CONFIG_MCHP_EIC is not set
# CONFIG_SUNPLUS_SP7021_INTC is not set
# end of IRQ chip support

# CONFIG_IPACK_BUS is not set
# CONFIG_RESET_CONTROLLER is not set

#
# PHY Subsystem
#
# CONFIG_GENERIC_PHY is not set
# CONFIG_PHY_PISTACHIO_USB is not set
# CONFIG_PHY_CAN_TRANSCEIVER is not set

#
# PHY drivers for Broadcom platforms
#
# CONFIG_PHY_BCM63XX_USBH is not set
# CONFIG_BCM_KONA_USB2_PHY is not set
# end of PHY drivers for Broadcom platforms

# CONFIG_PHY_HI6220_USB is not set
# CONFIG_PHY_HI3660_USB is not set
# CONFIG_PHY_HI3670_USB is not set
# CONFIG_PHY_HI3670_PCIE is not set
# CONFIG_PHY_HISTB_COMBPHY is not set
# CONFIG_PHY_HISI_INNO_USB2 is not set
# CONFIG_PHY_PXA_28NM_HSIC is not set
# CONFIG_PHY_PXA_28NM_USB2 is not set
# CONFIG_PHY_PXA_USB is not set
# CONFIG_PHY_MMP3_USB is not set
# CONFIG_PHY_MMP3_HSIC is not set
# CONFIG_PHY_MT7621_PCI is not set
# CONFIG_PHY_RALINK_USB is not set
# CONFIG_PHY_RCAR_GEN3_USB3 is not set
# CONFIG_PHY_ROCKCHIP_DPHY_RX0 is not set
# CONFIG_PHY_ROCKCHIP_PCIE is not set
# CONFIG_PHY_ROCKCHIP_SNPS_PCIE3 is not set
# CONFIG_PHY_EXYNOS_MIPI_VIDEO is not set
# CONFIG_PHY_SAMSUNG_USB2 is not set
# CONFIG_PHY_ST_SPEAR1310_MIPHY is not set
# CONFIG_PHY_ST_SPEAR1340_MIPHY is not set
# CONFIG_PHY_TEGRA194_P2U is not set
# CONFIG_PHY_DA8XX_USB is not set
# CONFIG_OMAP_CONTROL_PHY is not set
# CONFIG_TI_PIPE3 is not set
# CONFIG_PHY_INTEL_KEEMBAY_EMMC is not set
# CONFIG_PHY_INTEL_KEEMBAY_USB is not set
# CONFIG_PHY_INTEL_LGM_EMMC is not set
# CONFIG_PHY_XILINX_ZYNQMP is not set
# end of PHY Subsystem

# CONFIG_POWERCAP is not set
# CONFIG_MCB is not set

#
# Performance monitor support
#
# CONFIG_ARM_CCN is not set
# CONFIG_ARM_CMN is not set
# CONFIG_FSL_IMX8_DDR_PMU is not set
# CONFIG_XGENE_PMU is not set
# CONFIG_ARM_DMC620_PMU is not set
# CONFIG_MARVELL_CN10K_TAD_PMU is not set
# CONFIG_ALIBABA_UNCORE_DRW_PMU is not set
# CONFIG_MARVELL_CN10K_DDR_PMU is not set
# end of Performance monitor support

# CONFIG_RAS is not set

#
# Android
#
# CONFIG_ANDROID_BINDER_IPC is not set
# end of Android

# CONFIG_DAX is not set
# CONFIG_NVMEM is not set

#
# HW tracing support
#
# CONFIG_STM is not set
# CONFIG_INTEL_TH is not set
# end of HW tracing support

# CONFIG_FPGA is not set
# CONFIG_TEE is not set
# CONFIG_SIOX is not set
# CONFIG_SLIMBUS is not set
# CONFIG_INTERCONNECT is not set
# CONFIG_COUNTER is not set
# CONFIG_PECI is not set
# CONFIG_HTE is not set
# end of Device Drivers

#
# File systems
#
CONFIG_DCACHE_WORD_ACCESS=y
# CONFIG_VALIDATE_FS_PARSER is not set
# CONFIG_EXT2_FS is not set
# CONFIG_EXT3_FS is not set
# CONFIG_EXT4_FS is not set
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
# CONFIG_XFS_FS is not set
# CONFIG_GFS2_FS is not set
# CONFIG_BTRFS_FS is not set
# CONFIG_NILFS2_FS is not set
# CONFIG_F2FS_FS is not set
CONFIG_EXPORTFS=y
# CONFIG_EXPORTFS_BLOCK_OPS is not set
CONFIG_FILE_LOCKING=y
# CONFIG_FS_ENCRYPTION is not set
# CONFIG_FS_VERITY is not set
# CONFIG_DNOTIFY is not set
# CONFIG_INOTIFY_USER is not set
# CONFIG_FANOTIFY is not set
# CONFIG_QUOTA is not set
# CONFIG_AUTOFS4_FS is not set
# CONFIG_AUTOFS_FS is not set
# CONFIG_FUSE_FS is not set
# CONFIG_OVERLAY_FS is not set

#
# Caches
#
# CONFIG_FSCACHE is not set
# end of Caches

#
# CD-ROM/DVD Filesystems
#
# CONFIG_ISO9660_FS is not set
# CONFIG_UDF_FS is not set
# end of CD-ROM/DVD Filesystems

#
# DOS/FAT/EXFAT/NT Filesystems
#
# CONFIG_MSDOS_FS is not set
# CONFIG_VFAT_FS is not set
# CONFIG_EXFAT_FS is not set
# CONFIG_NTFS_FS is not set
# CONFIG_NTFS3_FS is not set
# end of DOS/FAT/EXFAT/NT Filesystems

#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
# CONFIG_PROC_KCORE is not set
CONFIG_PROC_SYSCTL=y
CONFIG_PROC_PAGE_MONITOR=y
# CONFIG_PROC_CHILDREN is not set
CONFIG_PROC_PID_ARCH_STATUS=y
CONFIG_KERNFS=y
CONFIG_SYSFS=y
# CONFIG_TMPFS is not set
# CONFIG_HUGETLBFS is not set
CONFIG_ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP=y
CONFIG_ARCH_HAS_GIGANTIC_PAGE=y
# CONFIG_CONFIGFS_FS is not set
# end of Pseudo filesystems

# CONFIG_MISC_FILESYSTEMS is not set
# CONFIG_NLS is not set
# CONFIG_UNICODE is not set
CONFIG_IO_WQ=y
# end of File systems

#
# Security options
#
# CONFIG_KEYS is not set
# CONFIG_SECURITY_DMESG_RESTRICT is not set
# CONFIG_SECURITY is not set
# CONFIG_SECURITYFS is not set
CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR=y
# CONFIG_HARDENED_USERCOPY is not set
# CONFIG_FORTIFY_SOURCE is not set
# CONFIG_STATIC_USERMODEHELPER is not set
CONFIG_DEFAULT_SECURITY_DAC=y
CONFIG_LSM="landlock,lockdown,yama,loadpin,safesetid,integrity,bpf"

#
# Kernel hardening options
#

#
# Memory initialization
#
CONFIG_INIT_STACK_NONE=y
# CONFIG_INIT_ON_ALLOC_DEFAULT_ON is not set
# CONFIG_INIT_ON_FREE_DEFAULT_ON is not set
CONFIG_CC_HAS_ZERO_CALL_USED_REGS=y
# CONFIG_ZERO_CALL_USED_REGS is not set
# end of Memory initialization

CONFIG_RANDSTRUCT_NONE=y
# end of Kernel hardening options
# end of Security options

# CONFIG_CRYPTO is not set

#
# Library routines
#
# CONFIG_PACKING is not set
CONFIG_BITREVERSE=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
# CONFIG_CORDIC is not set
# CONFIG_PRIME_NUMBERS is not set
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_GENERIC_IOMAP=y
CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
CONFIG_ARCH_HAS_FAST_MULTIPLIER=y
CONFIG_ARCH_USE_SYM_ANNOTATIONS=y

#
# Crypto library routines
#
CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC=y
# CONFIG_CRYPTO_LIB_CHACHA is not set
# CONFIG_CRYPTO_LIB_CURVE25519 is not set
CONFIG_CRYPTO_LIB_POLY1305_RSIZE=11
# CONFIG_CRYPTO_LIB_POLY1305 is not set
# end of Crypto library routines

# CONFIG_CRC_CCITT is not set
# CONFIG_CRC16 is not set
# CONFIG_CRC_T10DIF is not set
# CONFIG_CRC64_ROCKSOFT is not set
# CONFIG_CRC_ITU_T is not set
CONFIG_CRC32=y
# CONFIG_CRC32_SELFTEST is not set
CONFIG_CRC32_SLICEBY8=y
# CONFIG_CRC32_SLICEBY4 is not set
# CONFIG_CRC32_SARWATE is not set
# CONFIG_CRC32_BIT is not set
# CONFIG_CRC64 is not set
# CONFIG_CRC4 is not set
# CONFIG_CRC7 is not set
# CONFIG_LIBCRC32C is not set
# CONFIG_CRC8 is not set
# CONFIG_RANDOM32_SELFTEST is not set
# CONFIG_XZ_DEC is not set
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT_MAP=y
CONFIG_HAS_DMA=y
CONFIG_NEED_SG_DMA_LENGTH=y
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_ARCH_DMA_ADDR_T_64BIT=y
CONFIG_SWIOTLB=y
# CONFIG_DMA_API_DEBUG is not set
# CONFIG_IRQ_POLL is not set
CONFIG_HAVE_GENERIC_VDSO=y
CONFIG_GENERIC_GETTIMEOFDAY=y
CONFIG_GENERIC_VDSO_TIME_NS=y
CONFIG_ARCH_HAS_PMEM_API=y
CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE=y
CONFIG_ARCH_HAS_COPY_MC=y
CONFIG_ARCH_STACKWALK=y
CONFIG_STACKDEPOT=y
CONFIG_SBITMAP=y
# CONFIG_PARMAN is not set
# CONFIG_OBJAGG is not set
# end of Library routines

#
# Kernel hacking
#

#
# printk and dmesg options
#
# CONFIG_PRINTK_TIME is not set
# CONFIG_PRINTK_CALLER is not set
# CONFIG_STACKTRACE_BUILD_ID is not set
CONFIG_CONSOLE_LOGLEVEL_DEFAULT=7
CONFIG_CONSOLE_LOGLEVEL_QUIET=4
CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4
# CONFIG_DYNAMIC_DEBUG is not set
# CONFIG_DYNAMIC_DEBUG_CORE is not set
# CONFIG_SYMBOLIC_ERRNAME is not set
CONFIG_DEBUG_BUGVERBOSE=y
# end of printk and dmesg options

# CONFIG_DEBUG_KERNEL is not set

#
# Compile-time checks and compiler options
#
CONFIG_AS_HAS_NON_CONST_LEB128=y
CONFIG_FRAME_WARN=2048
# CONFIG_STRIP_ASM_SYMS is not set
# CONFIG_HEADERS_INSTALL is not set
CONFIG_DEBUG_SECTION_MISMATCH=y
CONFIG_SECTION_MISMATCH_WARN_ONLY=y
CONFIG_OBJTOOL=y
# end of Compile-time checks and compiler options

#
# Generic Kernel Debugging Instruments
#
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_DEBUG_FS is not set
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_ARCH_HAS_UBSAN_SANITIZE_ALL=y
# CONFIG_UBSAN is not set
CONFIG_HAVE_ARCH_KCSAN=y
CONFIG_HAVE_KCSAN_COMPILER=y
# end of Generic Kernel Debugging Instruments

#
# Networking Debugging
#
# end of Networking Debugging

#
# Memory Debugging
#
# CONFIG_PAGE_EXTENSION is not set
CONFIG_SLUB_DEBUG=y
# CONFIG_SLUB_DEBUG_ON is not set
# CONFIG_PAGE_TABLE_CHECK is not set
# CONFIG_PAGE_POISONING is not set
# CONFIG_DEBUG_RODATA_TEST is not set
CONFIG_ARCH_HAS_DEBUG_WX=y
# CONFIG_DEBUG_WX is not set
CONFIG_GENERIC_PTDUMP=y
CONFIG_HAVE_DEBUG_KMEMLEAK=y
CONFIG_ARCH_HAS_DEBUG_VM_PGTABLE=y
# CONFIG_DEBUG_VM_PGTABLE is not set
CONFIG_ARCH_HAS_DEBUG_VIRTUAL=y
CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_ARCH_SUPPORTS_KMAP_LOCAL_FORCE_MAP=y
CONFIG_HAVE_ARCH_KASAN=y
CONFIG_HAVE_ARCH_KASAN_VMALLOC=y
CONFIG_CC_HAS_KASAN_GENERIC=y
CONFIG_CC_HAS_WORKING_NOSANITIZE_ADDRESS=y
# CONFIG_KASAN is not set
CONFIG_HAVE_ARCH_KFENCE=y
# CONFIG_KFENCE is not set
CONFIG_HAVE_ARCH_KMSAN=y
# end of Memory Debugging

#
# Debug Oops, Lockups and Hangs
#
# CONFIG_PANIC_ON_OOPS is not set
CONFIG_PANIC_ON_OOPS_VALUE=0
CONFIG_PANIC_TIMEOUT=0
CONFIG_HARDLOCKUP_CHECK_TIMESTAMP=y
# end of Debug Oops, Lockups and Hangs

#
# Scheduler Debugging
#
# end of Scheduler Debugging

# CONFIG_DEBUG_TIMEKEEPING is not set

#
# Lock Debugging (spinlocks, mutexes, etc...)
#
CONFIG_LOCK_DEBUGGING_SUPPORT=y
# CONFIG_WW_MUTEX_SELFTEST is not set
# end of Lock Debugging (spinlocks, mutexes, etc...)

# CONFIG_DEBUG_IRQFLAGS is not set
CONFIG_STACKTRACE=y
# CONFIG_WARN_ALL_UNSEEDED_RANDOM is not set

#
# Debug kernel data structures
#
# CONFIG_BUG_ON_DATA_CORRUPTION is not set
# end of Debug kernel data structures

#
# RCU Debugging
#
# end of RCU Debugging

CONFIG_USER_STACKTRACE_SUPPORT=y
CONFIG_HAVE_RETHOOK=y
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS=y
CONFIG_HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS=y
CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS=y
CONFIG_HAVE_DYNAMIC_FTRACE_NO_PATCHABLE=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_HAVE_FENTRY=y
CONFIG_HAVE_OBJTOOL_MCOUNT=y
CONFIG_HAVE_C_RECORDMCOUNT=y
CONFIG_HAVE_BUILDTIME_MCOUNT_SORT=y
CONFIG_TRACING_SUPPORT=y
# CONFIG_FTRACE is not set
# CONFIG_SAMPLES is not set
CONFIG_HAVE_SAMPLE_FTRACE_DIRECT=y
CONFIG_HAVE_SAMPLE_FTRACE_DIRECT_MULTI=y
CONFIG_ARCH_HAS_DEVMEM_IS_ALLOWED=y

#
# x86 Debugging
#
# CONFIG_X86_VERBOSE_BOOTUP is not set
CONFIG_EARLY_PRINTK=y
CONFIG_HAVE_MMIOTRACE_SUPPORT=y
CONFIG_IO_DELAY_0X80=y
# CONFIG_IO_DELAY_0XED is not set
# CONFIG_IO_DELAY_UDELAY is not set
# CONFIG_IO_DELAY_NONE is not set
CONFIG_UNWINDER_ORC=y
# CONFIG_UNWINDER_FRAME_POINTER is not set
# end of x86 Debugging

#
# Kernel Testing and Coverage
#
# CONFIG_KUNIT is not set
CONFIG_ARCH_HAS_KCOV=y
CONFIG_CC_HAS_SANCOV_TRACE_PC=y
# CONFIG_KCOV is not set
# CONFIG_RUNTIME_TESTING_MENU is not set
CONFIG_ARCH_USE_MEMTEST=y
# CONFIG_MEMTEST is not set
# end of Kernel Testing and Coverage

#
# Rust hacking
#
# end of Rust hacking

CONFIG_WARN_MISSING_DOCUMENTS=y
CONFIG_WARN_ABI_ERRORS=y
# end of Kernel hacking

[PATCH v2 5/5] drivers: iio: adc: Add MAX77541 ADC Support

[Okan Sahin]

The MAX77541 has an 8-bit Successive Approximation Register (SAR) ADC
with four multiplexers for supporting the telemetry feature

Signed-off-by: Okan Sahin <okan.sahin@analog.com>
---
 MAINTAINERS                    |   1 +
 drivers/iio/adc/Kconfig        |  11 ++
 drivers/iio/adc/Makefile       |   1 +
 drivers/iio/adc/max77541-adc.c | 199 +++++++++++++++++++++++++++++++++
 4 files changed, 212 insertions(+)
 create mode 100644 drivers/iio/adc/max77541-adc.c

diff --git a/MAINTAINERS b/MAINTAINERS
index 8e5572b28a8c..18ce4644cc75 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12503,6 +12503,7 @@ L:	linux-kernel@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/mfd/adi,max77541.yaml
 F:	Documentation/devicetree/bindings/regulator/adi,max77541.yaml
+F:	drivers/iio/adc/max77541-adc.c
 F:	drivers/mfd/max77541.c
 F:	drivers/regulator/max77541-regulator.c
 F:	include/linux/mfd/max77541.h
diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index 791612ca6012..9716225b50da 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -696,6 +696,17 @@ config MAX1363
 	  To compile this driver as a module, choose M here: the module will be
 	  called max1363.
 
+config MAX77541_ADC
+	tristate "Analog Devices MAX77541 ADC driver"
+	depends on MFD_MAX77541
+	help
+	  This driver controls a Analog Devices MAX77541 ADC
+	  via I2C bus. This device has one adc. Say yes here to build
+	  support for Analog Devices MAX77541 ADC interface.
+
+	  To compile this driver as a module, choose M here:
+	  the module will be called max77541-adc.
+
 config MAX9611
 	tristate "Maxim max9611/max9612 ADC driver"
 	depends on I2C
diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile
index 46caba7a010c..03774cccbb4b 100644
--- a/drivers/iio/adc/Makefile
+++ b/drivers/iio/adc/Makefile
@@ -64,6 +64,7 @@ obj-$(CONFIG_MAX1118) += max1118.o
 obj-$(CONFIG_MAX11205) += max11205.o
 obj-$(CONFIG_MAX1241) += max1241.o
 obj-$(CONFIG_MAX1363) += max1363.o
+obj-$(CONFIG_MAX77541_ADC) += max77541-adc.o
 obj-$(CONFIG_MAX9611) += max9611.o
 obj-$(CONFIG_MCP320X) += mcp320x.o
 obj-$(CONFIG_MCP3422) += mcp3422.o
diff --git a/drivers/iio/adc/max77541-adc.c b/drivers/iio/adc/max77541-adc.c
new file mode 100644
index 000000000000..29adcdbd96ae
--- /dev/null
+++ b/drivers/iio/adc/max77541-adc.c
@@ -0,0 +1,199 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2022 Analog Devices, Inc.
+ * ADI MAX77541 ADC Driver with IIO interface
+ */
+
+#include <linux/bitfield.h>
+#include <linux/iio/iio.h>
+#include <linux/mfd/max77541.h>
+#include <linux/mod_devicetable.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/of_regulator.h>
+#include <linux/units.h>
+
+#define MAX77541_ADC_CHANNEL(_channel, _name, _type, _reg) \
+	{							\
+		.type = _type,					\
+		.indexed = 1,					\
+		.channel = _channel,				\
+		.address = _reg,				\
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |	\
+				      BIT(IIO_CHAN_INFO_SCALE) |\
+				      BIT(IIO_CHAN_INFO_OFFSET),\
+		.datasheet_name = _name,			\
+	}
+
+enum max77541_adc_range {
+	LOW_RANGE,
+	MID_RANGE,
+	HIGH_RANGE,
+};
+
+struct max77541_adc_iio {
+	struct regmap	*regmap;
+};
+
+enum max77541_adc_channel {
+	MAX77541_ADC_VSYS_V = 0,
+	MAX77541_ADC_VOUT1_V,
+	MAX77541_ADC_VOUT2_V,
+	MAX77541_ADC_TEMP,
+};
+
+static int max77541_adc_offset(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       int *val, int *val2)
+{
+	switch (chan->channel) {
+	case MAX77541_ADC_VSYS_V:
+	case MAX77541_ADC_VOUT1_V:
+	case MAX77541_ADC_VOUT2_V:
+		*val = 0;
+		*val2 = 0;
+		return IIO_VAL_INT_PLUS_MICRO;
+	case MAX77541_ADC_TEMP:
+		*val = DIV_ROUND_CLOSEST(ABSOLUTE_ZERO_MILLICELSIUS,
+					 MILLIDEGREE_PER_DEGREE);
+		*val2 = 0;
+		return IIO_VAL_INT_PLUS_MICRO;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int max77541_adc_scale(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      int *val, int *val2)
+{
+	struct max77541_adc_iio *info = iio_priv(indio_dev);
+	unsigned int reg_val;
+	int ret;
+
+	switch (chan->channel) {
+	case MAX77541_ADC_VSYS_V:
+		*val = 0;
+		*val2 = 25000;
+		return IIO_VAL_INT_PLUS_MICRO;
+	case MAX77541_ADC_VOUT1_V:
+	case MAX77541_ADC_VOUT2_V:
+		ret = regmap_read(info->regmap, MAX77541_REG_M2_CFG1, &reg_val);
+		if (ret)
+			return ret;
+		reg_val = FIELD_GET(MAX77541_BITS_MX_CFG1_RNG, reg_val);
+
+		*val = 0;
+
+		switch (reg_val) {
+		case LOW_RANGE:
+			*val2 = 6250;
+			break;
+		case MID_RANGE:
+			*val2 = 12500;
+			break;
+		case HIGH_RANGE:
+			*val2 = 25000;
+			break;
+		default:
+			return -EINVAL;
+		}
+
+		return IIO_VAL_INT_PLUS_MICRO;
+	case MAX77541_ADC_TEMP:
+		*val = 1;
+		*val2 = 725000;
+		return IIO_VAL_INT_PLUS_MICRO;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int max77541_adc_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan,
+			    int *val)
+{
+	struct max77541_adc_iio *info = iio_priv(indio_dev);
+	int ret;
+
+	ret = regmap_read(info->regmap, chan->address, val);
+	if (ret)
+		return ret;
+
+	return IIO_VAL_INT;
+}
+
+static const struct iio_chan_spec max77541_adc_channels[] = {
+	MAX77541_ADC_CHANNEL(MAX77541_ADC_VSYS_V, "vsys_v", IIO_VOLTAGE,
+			     MAX77541_REG_ADC_DATA_CH1),
+	MAX77541_ADC_CHANNEL(MAX77541_ADC_VOUT1_V, "vout1_v", IIO_VOLTAGE,
+			     MAX77541_REG_ADC_DATA_CH2),
+	MAX77541_ADC_CHANNEL(MAX77541_ADC_VOUT2_V, "vout2_v", IIO_VOLTAGE,
+			     MAX77541_REG_ADC_DATA_CH3),
+	MAX77541_ADC_CHANNEL(MAX77541_ADC_TEMP, "temp", IIO_TEMP,
+			     MAX77541_REG_ADC_DATA_CH6),
+};
+
+static int max77541_adc_read_raw(struct iio_dev *indio_dev,
+				 struct iio_chan_spec const *chan,
+				 int *val, int *val2, long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_OFFSET:
+		return max77541_adc_offset(indio_dev, chan, val, val2);
+	case IIO_CHAN_INFO_SCALE:
+		return max77541_adc_scale(indio_dev, chan, val, val2);
+	case IIO_CHAN_INFO_RAW:
+		return max77541_adc_raw(indio_dev, chan, val);
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info max77541_adc_info = {
+	.read_raw = max77541_adc_read_raw,
+};
+
+static int max77541_adc_probe(struct platform_device *pdev)
+{
+	struct max77541_dev *max77541 = dev_get_drvdata(pdev->dev.parent);
+	struct device *dev = &pdev->dev;
+	struct max77541_adc_iio *info;
+	struct iio_dev *indio_dev;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*info));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	info = iio_priv(indio_dev);
+
+	info->regmap = max77541->regmap;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	indio_dev->name = platform_get_device_id(pdev)->name;
+	indio_dev->info = &max77541_adc_info;
+	indio_dev->channels = max77541_adc_channels;
+	indio_dev->num_channels = ARRAY_SIZE(max77541_adc_channels);
+
+	return devm_iio_device_register(dev, indio_dev);
+}
+
+static const struct platform_device_id max77541_adc_platform_id[] = {
+	{ "max77541-adc", },
+	{  /* sentinel */  }
+};
+MODULE_DEVICE_TABLE(platform, max77541_adc_platform_id);
+
+static struct platform_driver max77541_adc_driver = {
+	.driver = {
+		.name = "max77541-adc",
+	},
+	.probe = max77541_adc_probe,
+	.id_table = max77541_adc_platform_id,
+};
+module_platform_driver(max77541_adc_driver);
+
+MODULE_AUTHOR("Okan Sahin <Okan.Sahin@analog.com>");
+MODULE_DESCRIPTION("MAX77541 ADC driver");
+MODULE_LICENSE("GPL");
-- 
2.30.2

Re: [PATCH v2 5/5] drivers: iio: adc: Add MAX77541 ADC Support

[Jonathan Cameron]

On Tue, 27 Dec 2022 01:38:39 +0300
Okan Sahin <okan.sahin@analog.com> wrote:

> The MAX77541 has an 8-bit Successive Approximation Register (SAR) ADC
> with four multiplexers for supporting the telemetry feature
> 
> Signed-off-by: Okan Sahin <okan.sahin@analog.com>

If there is a v3 please send the whole series to everyone who is cc'd on
any of the patches in this version.  For a driver like this, it's much better
to let people pick and choose which bits they are interested in than
to only send part of it to each list / reviewer.

I took a closer look at the offsets / scales this time.  They don't appear
to comply with the ABI.  Whilst 'most' IIO units are SI units, a few have
units borrowed from hwmon including temperature and voltage - this brings
some multiplication factors that need to be taken into account.

Jonathan

> ---
>  MAINTAINERS                    |   1 +
>  drivers/iio/adc/Kconfig        |  11 ++
>  drivers/iio/adc/Makefile       |   1 +
>  drivers/iio/adc/max77541-adc.c | 199 +++++++++++++++++++++++++++++++++
>  4 files changed, 212 insertions(+)
>  create mode 100644 drivers/iio/adc/max77541-adc.c
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 8e5572b28a8c..18ce4644cc75 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -12503,6 +12503,7 @@ L:	linux-kernel@vger.kernel.org
>  S:	Maintained
>  F:	Documentation/devicetree/bindings/mfd/adi,max77541.yaml
>  F:	Documentation/devicetree/bindings/regulator/adi,max77541.yaml
> +F:	drivers/iio/adc/max77541-adc.c
>  F:	drivers/mfd/max77541.c
>  F:	drivers/regulator/max77541-regulator.c
>  F:	include/linux/mfd/max77541.h
> diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
> index 791612ca6012..9716225b50da 100644
> --- a/drivers/iio/adc/Kconfig
> +++ b/drivers/iio/adc/Kconfig
> @@ -696,6 +696,17 @@ config MAX1363
>  	  To compile this driver as a module, choose M here: the module will be
>  	  called max1363.
>  
> +config MAX77541_ADC
> +	tristate "Analog Devices MAX77541 ADC driver"
> +	depends on MFD_MAX77541
> +	help
> +	  This driver controls a Analog Devices MAX77541 ADC
> +	  via I2C bus. This device has one adc. Say yes here to build
> +	  support for Analog Devices MAX77541 ADC interface.
> +
> +	  To compile this driver as a module, choose M here:
> +	  the module will be called max77541-adc.
> +
>  config MAX9611
>  	tristate "Maxim max9611/max9612 ADC driver"
>  	depends on I2C
> diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile
> index 46caba7a010c..03774cccbb4b 100644
> --- a/drivers/iio/adc/Makefile
> +++ b/drivers/iio/adc/Makefile
> @@ -64,6 +64,7 @@ obj-$(CONFIG_MAX1118) += max1118.o
>  obj-$(CONFIG_MAX11205) += max11205.o
>  obj-$(CONFIG_MAX1241) += max1241.o
>  obj-$(CONFIG_MAX1363) += max1363.o
> +obj-$(CONFIG_MAX77541_ADC) += max77541-adc.o
>  obj-$(CONFIG_MAX9611) += max9611.o
>  obj-$(CONFIG_MCP320X) += mcp320x.o
>  obj-$(CONFIG_MCP3422) += mcp3422.o
> diff --git a/drivers/iio/adc/max77541-adc.c b/drivers/iio/adc/max77541-adc.c
> new file mode 100644
> index 000000000000..29adcdbd96ae
> --- /dev/null
> +++ b/drivers/iio/adc/max77541-adc.c
> @@ -0,0 +1,199 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later
> +/*
> + * Copyright (c) 2022 Analog Devices, Inc.
> + * ADI MAX77541 ADC Driver with IIO interface
> + */
> +
> +#include <linux/bitfield.h>
> +#include <linux/iio/iio.h>
> +#include <linux/mfd/max77541.h>
> +#include <linux/mod_devicetable.h>
> +#include <linux/platform_device.h>
> +#include <linux/regmap.h>
> +#include <linux/regulator/driver.h>
> +#include <linux/regulator/of_regulator.h>
> +#include <linux/units.h>
> +
> +#define MAX77541_ADC_CHANNEL(_channel, _name, _type, _reg) \
> +	{							\
> +		.type = _type,					\
> +		.indexed = 1,					\
> +		.channel = _channel,				\
> +		.address = _reg,				\
> +		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |	\
> +				      BIT(IIO_CHAN_INFO_SCALE) |\
> +				      BIT(IIO_CHAN_INFO_OFFSET),\
> +		.datasheet_name = _name,			\
> +	}

Move this macro down to just above where it is used.  Given the purpose
of this is to reduce boilerplate repetition we want to review what
it does based on the values provided.  That's much easier if we don't
have to go look for the macro.

> +
> +enum max77541_adc_range {
> +	LOW_RANGE,
> +	MID_RANGE,
> +	HIGH_RANGE,
> +};
> +
> +struct max77541_adc_iio {
> +	struct regmap	*regmap;
> +};
> +
> +enum max77541_adc_channel {
> +	MAX77541_ADC_VSYS_V = 0,
> +	MAX77541_ADC_VOUT1_V,
> +	MAX77541_ADC_VOUT2_V,
> +	MAX77541_ADC_TEMP,
> +};
> +
> +static int max77541_adc_offset(struct iio_dev *indio_dev,
> +			       struct iio_chan_spec const *chan,
> +			       int *val, int *val2)
> +{
> +	switch (chan->channel) {
> +	case MAX77541_ADC_VSYS_V:
> +	case MAX77541_ADC_VOUT1_V:
> +	case MAX77541_ADC_VOUT2_V:
> +		*val = 0;
> +		*val2 = 0;
> +		return IIO_VAL_INT_PLUS_MICRO;

I thought I mentioned this before.  For cases where the offset is 0 don't 
set the bit in info_mask_seperate and don't provide an implementation to
read it.
 
> +	case MAX77541_ADC_TEMP:
> +		*val = DIV_ROUND_CLOSEST(ABSOLUTE_ZERO_MILLICELSIUS,
> +					 MILLIDEGREE_PER_DEGREE);
> +		*val2 = 0;

If *val2 == 0
then the return type should be IIO_VAL_INT allowing any
code using this to handle it as an integer, not a fixed point number.

I'd also like a comment here to explain the maths being done.
Base units of temperature are mili degrees Celsius and the offset looks wrong anyway as it doesn't
take into account that in datasheet it is applied after scale, whereas in IIO ABI it needs
to be applied first (thus requiring it to be divided by scale)
https://elixir.bootlin.com/linux/v6.2-rc1/source/Documentation/ABI/testing/sysfs-bus-iio#L244

So what you currently have is
1LSB = 1.725*(raw + -273/1000) 
I think it should be - based on equation (-273 + 1.725 * ADC_DATA6) deg C
1LSB = 1725*(raw - 273/1725) so offset should be -273/1725 and scale should be 1725.

Also check scaling is right for voltage channels - noting that voltage channels are
expressed in milivolts I suspect the sale should therefore be 25 but I haven't checked
it closely.



> +		return IIO_VAL_INT_PLUS_MICRO;
> +	default:
> +		return -EINVAL;
> +	}
> +}
> +



As noted above, put the macro definition here so it is easy to see what
this does.

> +static const struct iio_chan_spec max77541_adc_channels[] = {
> +	MAX77541_ADC_CHANNEL(MAX77541_ADC_VSYS_V, "vsys_v", IIO_VOLTAGE,
> +			     MAX77541_REG_ADC_DATA_CH1),
> +	MAX77541_ADC_CHANNEL(MAX77541_ADC_VOUT1_V, "vout1_v", IIO_VOLTAGE,
> +			     MAX77541_REG_ADC_DATA_CH2),
> +	MAX77541_ADC_CHANNEL(MAX77541_ADC_VOUT2_V, "vout2_v", IIO_VOLTAGE,
> +			     MAX77541_REG_ADC_DATA_CH3),
> +	MAX77541_ADC_CHANNEL(MAX77541_ADC_TEMP, "temp", IIO_TEMP,
> +			     MAX77541_REG_ADC_DATA_CH6),
> +};
> +

> +
> +static int max77541_adc_probe(struct platform_device *pdev)
> +{
> +	struct max77541_dev *max77541 = dev_get_drvdata(pdev->dev.parent);

I can't easily see other parts of the mfd (as not cc'd on rest of series),
but from what is here it might be nice to set the drvdata to the regmap rather
than the mfd driver specific structure.

> +	struct device *dev = &pdev->dev;
> +	struct max77541_adc_iio *info;
> +	struct iio_dev *indio_dev;
> +
> +	indio_dev = devm_iio_device_alloc(dev, sizeof(*info));
> +	if (!indio_dev)
> +		return -ENOMEM;
> +
> +	info = iio_priv(indio_dev);
> +
> +	info->regmap = max77541->regmap;
> +	indio_dev->modes = INDIO_DIRECT_MODE;
> +
> +	indio_dev->name = platform_get_device_id(pdev)->name;

I would prefer to see that hard coded.  Also, from an IIO point
of view this should just be the part number which is "max77541"
without the -adc postfix.

The advantage of hard coding it is I don't need to think about what
indio_dev->name = "max77541"; 
sets it to thus reducing the complexity of reviewing a little.
Note that similar cases have gone wrong in the past and we've
ended up stuck with hideous ABI for a few device names so I'm
paranoid about this now.


> +	indio_dev->info = &max77541_adc_info;
> +	indio_dev->channels = max77541_adc_channels;
> +	indio_dev->num_channels = ARRAY_SIZE(max77541_adc_channels);
> +
> +	return devm_iio_device_register(dev, indio_dev);
> +}
> +
> +static const struct platform_device_id max77541_adc_platform_id[] = {
> +	{ "max77541-adc", },
> +	{  /* sentinel */  }
> +};
> +MODULE_DEVICE_TABLE(platform, max77541_adc_platform_id);
> +
> +static struct platform_driver max77541_adc_driver = {
> +	.driver = {
> +		.name = "max77541-adc",
> +	},
> +	.probe = max77541_adc_probe,
> +	.id_table = max77541_adc_platform_id,
> +};
> +module_platform_driver(max77541_adc_driver);
> +
> +MODULE_AUTHOR("Okan Sahin <Okan.Sahin@analog.com>");
> +MODULE_DESCRIPTION("MAX77541 ADC driver");
> +MODULE_LICENSE("GPL");

RE: [PATCH v2 5/5] drivers: iio: adc: Add MAX77541 ADC Support

[Sahin, Okan]

Hi Jonathan,

Thank you for your feedback and efforts. I apologize for some missing points of v2 patch. I will be more careful to fix all feedback before sending new patch so I want to ask something before sending v3 patch. 

On Fri, 30 Dec 2022 8:50 PM
Jonathan Cameron <jic23@kernel.org> wrote:

> On Tue, 27 Dec 2022 01:38:39 +0300
> Okan Sahin <okan.sahin@analog.com> wrote:
> 
> > The MAX77541 has an 8-bit Successive Approximation Register (SAR) ADC
> > with four multiplexers for supporting the telemetry feature
> >
> > Signed-off-by: Okan Sahin <okan.sahin@analog.com>
> 
> If there is a v3 please send the whole series to everyone who is cc'd on any of
> the patches in this version.  For a driver like this, it's much better to let people
> pick and choose which bits they are interested in than to only send part of it to
> each list / reviewer.
> 
> I took a closer look at the offsets / scales this time.  They don't appear to
> comply with the ABI.  Whilst 'most' IIO units are SI units, a few have units
> borrowed from hwmon including temperature and voltage - this brings some
> multiplication factors that need to be taken into account.
> 
> Jonathan
> 
> > ---
> >  MAINTAINERS                    |   1 +
> >  drivers/iio/adc/Kconfig        |  11 ++
> >  drivers/iio/adc/Makefile       |   1 +
> >  drivers/iio/adc/max77541-adc.c | 199
> > +++++++++++++++++++++++++++++++++
> >  4 files changed, 212 insertions(+)
> >  create mode 100644 drivers/iio/adc/max77541-adc.c
> >
> > diff --git a/MAINTAINERS b/MAINTAINERS index
> > 8e5572b28a8c..18ce4644cc75 100644
> > --- a/MAINTAINERS
> > +++ b/MAINTAINERS
> > @@ -12503,6 +12503,7 @@ L:	linux-kernel@vger.kernel.org
> >  S:	Maintained
> >  F:	Documentation/devicetree/bindings/mfd/adi,max77541.yaml
> >  F:	Documentation/devicetree/bindings/regulator/adi,max77541.yaml
> > +F:	drivers/iio/adc/max77541-adc.c
> >  F:	drivers/mfd/max77541.c
> >  F:	drivers/regulator/max77541-regulator.c
> >  F:	include/linux/mfd/max77541.h
> > diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index
> > 791612ca6012..9716225b50da 100644
> > --- a/drivers/iio/adc/Kconfig
> > +++ b/drivers/iio/adc/Kconfig
> > @@ -696,6 +696,17 @@ config MAX1363
> >  	  To compile this driver as a module, choose M here: the module will be
> >  	  called max1363.
> >
> > +config MAX77541_ADC
> > +	tristate "Analog Devices MAX77541 ADC driver"
> > +	depends on MFD_MAX77541
> > +	help
> > +	  This driver controls a Analog Devices MAX77541 ADC
> > +	  via I2C bus. This device has one adc. Say yes here to build
> > +	  support for Analog Devices MAX77541 ADC interface.
> > +
> > +	  To compile this driver as a module, choose M here:
> > +	  the module will be called max77541-adc.
> > +
> >  config MAX9611
> >  	tristate "Maxim max9611/max9612 ADC driver"
> >  	depends on I2C
> > diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile index
> > 46caba7a010c..03774cccbb4b 100644
> > --- a/drivers/iio/adc/Makefile
> > +++ b/drivers/iio/adc/Makefile
> > @@ -64,6 +64,7 @@ obj-$(CONFIG_MAX1118) += max1118.o
> >  obj-$(CONFIG_MAX11205) += max11205.o
> >  obj-$(CONFIG_MAX1241) += max1241.o
> >  obj-$(CONFIG_MAX1363) += max1363.o
> > +obj-$(CONFIG_MAX77541_ADC) += max77541-adc.o
> >  obj-$(CONFIG_MAX9611) += max9611.o
> >  obj-$(CONFIG_MCP320X) += mcp320x.o
> >  obj-$(CONFIG_MCP3422) += mcp3422.o
> > diff --git a/drivers/iio/adc/max77541-adc.c
> > b/drivers/iio/adc/max77541-adc.c new file mode 100644 index
> > 000000000000..29adcdbd96ae
> > --- /dev/null
> > +++ b/drivers/iio/adc/max77541-adc.c
> > @@ -0,0 +1,199 @@
> > +// SPDX-License-Identifier: GPL-2.0-or-later
> > +/*
> > + * Copyright (c) 2022 Analog Devices, Inc.
> > + * ADI MAX77541 ADC Driver with IIO interface  */
> > +
> > +#include <linux/bitfield.h>
> > +#include <linux/iio/iio.h>
> > +#include <linux/mfd/max77541.h>
> > +#include <linux/mod_devicetable.h>
> > +#include <linux/platform_device.h>
> > +#include <linux/regmap.h>
> > +#include <linux/regulator/driver.h>
> > +#include <linux/regulator/of_regulator.h> #include <linux/units.h>
> > +
> > +#define MAX77541_ADC_CHANNEL(_channel, _name, _type, _reg) \
> > +	{							\
> > +		.type = _type,					\
> > +		.indexed = 1,					\
> > +		.channel = _channel,				\
> > +		.address = _reg,				\
> > +		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |	\
> > +				      BIT(IIO_CHAN_INFO_SCALE) |\
> > +				      BIT(IIO_CHAN_INFO_OFFSET),\
> > +		.datasheet_name = _name,			\
> > +	}
> 
> Move this macro down to just above where it is used.  Given the purpose of this
> is to reduce boilerplate repetition we want to review what it does based on the
> values provided.  That's much easier if we don't have to go look for the macro.
> 
> > +
> > +enum max77541_adc_range {
> > +	LOW_RANGE,
> > +	MID_RANGE,
> > +	HIGH_RANGE,
> > +};
> > +
> > +struct max77541_adc_iio {
> > +	struct regmap	*regmap;
> > +};
> > +
> > +enum max77541_adc_channel {
> > +	MAX77541_ADC_VSYS_V = 0,
> > +	MAX77541_ADC_VOUT1_V,
> > +	MAX77541_ADC_VOUT2_V,
> > +	MAX77541_ADC_TEMP,
> > +};
> > +
> > +static int max77541_adc_offset(struct iio_dev *indio_dev,
> > +			       struct iio_chan_spec const *chan,
> > +			       int *val, int *val2)
> > +{
> > +	switch (chan->channel) {
> > +	case MAX77541_ADC_VSYS_V:
> > +	case MAX77541_ADC_VOUT1_V:
> > +	case MAX77541_ADC_VOUT2_V:
> > +		*val = 0;
> > +		*val2 = 0;
> > +		return IIO_VAL_INT_PLUS_MICRO;
> 
> I thought I mentioned this before.  For cases where the offset is 0 don't set the
> bit in info_mask_seperate and don't provide an implementation to read it.
> 
> > +	case MAX77541_ADC_TEMP:
> > +		*val = DIV_ROUND_CLOSEST(ABSOLUTE_ZERO_MILLICELSIUS,
> > +					 MILLIDEGREE_PER_DEGREE);
> > +		*val2 = 0;
> 
> If *val2 == 0
> then the return type should be IIO_VAL_INT allowing any code using this to
> handle it as an integer, not a fixed point number.
> 
> I'd also like a comment here to explain the maths being done.
> Base units of temperature are mili degrees Celsius and the offset looks wrong
> anyway as it doesn't take into account that in datasheet it is applied after scale,
> whereas in IIO ABI it needs to be applied first (thus requiring it to be divided by
> scale) https://urldefense.com/v3/__https://elixir.bootlin.com/linux/v6.2-
> rc1/source/Documentation/ABI/testing/sysfs-bus-
> iio*L244__;Iw!!A3Ni8CS0y2Y!7FLhRoK07ZzeEcEw_H5bPRrK-Dpnrs-mBOV-
> mWXiEWRQQZDa3F89L6WaGw0St2sFxPgtGhIznNbdig$
> 
> So what you currently have is
> 1LSB = 1.725*(raw + -273/1000)
> I think it should be - based on equation (-273 + 1.725 * ADC_DATA6) deg C 1LSB
> = 1725*(raw - 273/1725) so offset should be -273/1725 and scale should be
> 1725.
> 
> Also check scaling is right for voltage channels - noting that voltage channels are
> expressed in milivolts I suspect the sale should therefore be 25 but I haven't
> checked it closely.
> 
> 
> 
> > +		return IIO_VAL_INT_PLUS_MICRO;
> > +	default:
> > +		return -EINVAL;
> > +	}
> > +}
> > +
> 
> 
> 
> As noted above, put the macro definition here so it is easy to see what this does.
> 
> > +static const struct iio_chan_spec max77541_adc_channels[] = {
> > +	MAX77541_ADC_CHANNEL(MAX77541_ADC_VSYS_V, "vsys_v",
> IIO_VOLTAGE,
> > +			     MAX77541_REG_ADC_DATA_CH1),
> > +	MAX77541_ADC_CHANNEL(MAX77541_ADC_VOUT1_V, "vout1_v",
> IIO_VOLTAGE,
> > +			     MAX77541_REG_ADC_DATA_CH2),
> > +	MAX77541_ADC_CHANNEL(MAX77541_ADC_VOUT2_V, "vout2_v",
> IIO_VOLTAGE,
> > +			     MAX77541_REG_ADC_DATA_CH3),
> > +	MAX77541_ADC_CHANNEL(MAX77541_ADC_TEMP, "temp", IIO_TEMP,
> > +			     MAX77541_REG_ADC_DATA_CH6),
> > +};
> > +
> 
> > +
> > +static int max77541_adc_probe(struct platform_device *pdev) {
> > +	struct max77541_dev *max77541 = dev_get_drvdata(pdev-
> >dev.parent);
> 
> I can't easily see other parts of the mfd (as not cc'd on rest of series), but from
> what is here it might be nice to set the drvdata to the regmap rather than the
> mfd driver specific structure.
> 
This is my mistake, I will send whole patches to people who related them at once. As you said I just need regmap from parent mfd device. I think below is what you expect, right? I will also remove dev_get_drv_data.
struct device *dev = &pdev->dev;
struct regmap *map = dev_get_regmap(dev->parent, NULL);

> > +	struct device *dev = &pdev->dev;
> > +	struct max77541_adc_iio *info;
> > +	struct iio_dev *indio_dev;
> > +
> > +	indio_dev = devm_iio_device_alloc(dev, sizeof(*info));
> > +	if (!indio_dev)
> > +		return -ENOMEM;
> > +
> > +	info = iio_priv(indio_dev);
> > +
> > +	info->regmap = max77541->regmap;
> > +	indio_dev->modes = INDIO_DIRECT_MODE;
> > +
> > +	indio_dev->name = platform_get_device_id(pdev)->name;
> 
> I would prefer to see that hard coded.  Also, from an IIO point of view this
> should just be the part number which is "max77541"
> without the -adc postfix.
> 
> The advantage of hard coding it is I don't need to think about what indio_dev-
> >name = "max77541"; sets it to thus reducing the complexity of reviewing a
> little.
> Note that similar cases have gone wrong in the past and we've ended up stuck
> with hideous ABI for a few device names so I'm paranoid about this now.
> 
> 
> > +	indio_dev->info = &max77541_adc_info;
> > +	indio_dev->channels = max77541_adc_channels;
> > +	indio_dev->num_channels = ARRAY_SIZE(max77541_adc_channels);
> > +
> > +	return devm_iio_device_register(dev, indio_dev);
> > +}
> > +
> > +static const struct platform_device_id max77541_adc_platform_id[] = {
> > +	{ "max77541-adc", },
> > +	{  /* sentinel */  }
> > +};
> > +MODULE_DEVICE_TABLE(platform, max77541_adc_platform_id);
> > +
> > +static struct platform_driver max77541_adc_driver = {
> > +	.driver = {
> > +		.name = "max77541-adc",
> > +	},
> > +	.probe = max77541_adc_probe,
> > +	.id_table = max77541_adc_platform_id,
> > +};
> > +module_platform_driver(max77541_adc_driver);
> > +
> > +MODULE_AUTHOR("Okan Sahin <Okan.Sahin@analog.com>");
> > +MODULE_DESCRIPTION("MAX77541 ADC driver");
> > +MODULE_LICENSE("GPL");