[PATCH v3 1/2] dt-bindings: iio: adc: add Texas Instruments TLA2528

[Maxime Chevallier <maxime.chevallier@bootlin.com>]

The TI TLA2528 is a simple 8-channel, 12-bit ADC and GPIO chip
accessible over i2c. The ADC part has an AVDD supply that doubles as a
reference.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
---
 .../bindings/iio/adc/ti,tla2528.yaml          | 91 +++++++++++++++++++
 MAINTAINERS                                   |  6 ++
 2 files changed, 97 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/ti,tla2528.yaml

diff --git a/Documentation/devicetree/bindings/iio/adc/ti,tla2528.yaml b/Documentation/devicetree/bindings/iio/adc/ti,tla2528.yaml
new file mode 100644
index 000000000000..7a50a5026c1e
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/ti,tla2528.yaml
@@ -0,0 +1,91 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/ti,tla2528.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments TLA2528 8-channel 12-bit I2C ADC
+
+maintainers:
+  - Maxime Chevallier <maxime.chevallier@bootlin.com>
+
+description:
+  Each of the 8 input pins can be configured as an analog input, a digital
+  input or a digital output.
+
+properties:
+  compatible:
+    const: ti,tla2528
+
+  reg:
+    maxItems: 1
+
+  avdd-supply:
+    description: Analog supply, also used as the ADC reference voltage.
+
+  dvdd-supply: true
+
+  gpio-controller: true
+
+  "#gpio-cells":
+    const: 2
+
+  "#io-channel-cells":
+    const: 1
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
+
+patternProperties:
+  "^channel@[0-7]$":
+    type: object
+    $ref: adc.yaml
+    description: Represents an analog input.
+
+    properties:
+      reg:
+        description: AIN pin number
+        minimum: 0
+        maximum: 7
+
+    required:
+      - reg
+
+    unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+  - avdd-supply
+  - dvdd-supply
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        adc@17 {
+            compatible = "ti,tla2528";
+            reg = <0x17>;
+            avdd-supply = <&reg_adc_supply>;
+            dvdd-supply = <&reg_adc_supply>;
+            #io-channel-cells = <1>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            channel@0 {
+                reg = <0>;
+            };
+
+            channel@3 {
+                reg = <3>;
+            };
+        };
+    };
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index 93abbb315065..9ccb33ada3d5 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -27758,6 +27758,12 @@ F:	include/dt-bindings/soc/ti,sci_pm_domain.h
 F:	include/linux/soc/ti/ti_sci_inta_msi.h
 F:	include/linux/soc/ti/ti_sci_protocol.h
 
+TEXAS INSTRUMENTS' TLA2528 ADC DRIVER
+M:	Maxime Chevallier <maxime.chevallier@bootlin.com>
+L:	linux-iio@vger.kernel.org
+S:	Supported
+F:	Documentation/devicetree/bindings/iio/adc/ti,tla2528.yaml
+
 TEXAS INSTRUMENTS' TMP117 TEMPERATURE SENSOR DRIVER
 M:	Puranjay Mohan <puranjay@kernel.org>
 L:	linux-iio@vger.kernel.org
-- 
2.56.0