[PATCH v3 0/6] MediaTek Helio X10 MT6795 - MT6331/6332 PMIC Wrapper

[PATCH v3 0/6] MediaTek Helio X10 MT6795 - MT6331/6332 PMIC Wrapper

[AngeloGioacchino Del Regno]

Changes in v3:
 - Rebased on next-20230412
 - Changed if branch to switch in pwrap_init() as suggested
   by Matthias and Alexandre.

Changes in v2:
 - Rebased on next-20230323
 - Changed pwrap.txt addition to new yaml file addition

In an effort to give some love to the apparently forgotten MT6795 SoC,
I am upstreaming more components that are necessary to support platforms
powered by this one apart from a simple boot to serial console.

This series introduces support in the PMIC Wrapper for a different PMIC
topology, which is commonly found on smartphone boards, using one main
PMIC and one Companion/Sub PMIC, both accessible *only* through the pwrap;
be aware that this kind of topology is not *specific to* the Helio X10
SoC, but common across many kinds of MediaTek smartphone oriented SoCs
and board designs.

That said, support for the PMIC combo MT6331+MT6332 is provided in this
series in a form that will be able to initialize the PMICs with crypto
and DualIO but nothing else: these PMICs are very featureful, so I have
decided to add this support in more than just one step, as there will
be multiple patches for multiple different subsystems (..it's a mfd!..).

Tested on a MT6795 Sony Xperia M5 (codename "Holly") smartphone.

AngeloGioacchino Del Regno (6):
  dt-bindings: soc: mediatek: pwrap: Add compatible for MT6795 Helio X10
  soc: mediatek: pwrap: Move PMIC read test sequence in function
  soc: mediatek: pwrap: Add kerneldoc for struct pwrap_slv_type
  soc: mediatek: mtk-pmic-wrap: Add support for companion PMICs
  soc: mediatek: mtk-pmic-wrap: Add support for MT6331 w/ MT6332
    companion
  soc: mediatek: pwrap: Add support for MT6795 Helio X10

 .../bindings/soc/mediatek/mediatek,pwrap.yaml |   1 +
 drivers/soc/mediatek/mtk-pmic-wrap.c          | 292 ++++++++++++++++--
 2 files changed, 267 insertions(+), 26 deletions(-)

-- 
2.40.0

[PATCH v3 1/6] dt-bindings: soc: mediatek: pwrap: Add compatible for MT6795 Helio X10

[AngeloGioacchino Del Regno]

Add a compatible for the PMIC Wrapper found on the MT6795 Helio X10 SoC.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 .../devicetree/bindings/soc/mediatek/mediatek,pwrap.yaml         | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/soc/mediatek/mediatek,pwrap.yaml b/Documentation/devicetree/bindings/soc/mediatek/mediatek,pwrap.yaml
index 3fefd634bc69..a06ac2177444 100644
--- a/Documentation/devicetree/bindings/soc/mediatek/mediatek,pwrap.yaml
+++ b/Documentation/devicetree/bindings/soc/mediatek/mediatek,pwrap.yaml
@@ -33,6 +33,7 @@ properties:
               - mediatek,mt2701-pwrap
               - mediatek,mt6765-pwrap
               - mediatek,mt6779-pwrap
+              - mediatek,mt6795-pwrap
               - mediatek,mt6797-pwrap
               - mediatek,mt6873-pwrap
               - mediatek,mt7622-pwrap
-- 
2.40.0

[PATCH v3 2/6] soc: mediatek: pwrap: Move PMIC read test sequence in function

[AngeloGioacchino Del Regno]

The PMIC read test is performed in two places: pwrap_init_dual_io()
and pwrap_init_sidly().
In preparation for adding support for PMICs requiring a companion
part, move this sequence to a new function pwrap_pmic_read_test().

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com>
---
 drivers/soc/mediatek/mtk-pmic-wrap.c | 32 +++++++++++++++++-----------
 1 file changed, 20 insertions(+), 12 deletions(-)

diff --git a/drivers/soc/mediatek/mtk-pmic-wrap.c b/drivers/soc/mediatek/mtk-pmic-wrap.c
index 15789a03e6c6..5c500be48f7c 100644
--- a/drivers/soc/mediatek/mtk-pmic-wrap.c
+++ b/drivers/soc/mediatek/mtk-pmic-wrap.c
@@ -1455,6 +1455,18 @@ static int pwrap_regmap_write(void *context, u32 adr, u32 wdata)
 	return pwrap_write(context, adr, wdata);
 }
 
+static bool pwrap_pmic_read_test(struct pmic_wrapper *wrp, const u32 *dew_regs,
+				 u16 read_test_val)
+{
+	bool is_success;
+	u32 rdata;
+
+	pwrap_read(wrp, dew_regs[PWRAP_DEW_READ_TEST], &rdata);
+	is_success = ((rdata & U16_MAX) == read_test_val);
+
+	return is_success;
+}
+
 static int pwrap_reset_spislave(struct pmic_wrapper *wrp)
 {
 	bool tmp;
@@ -1498,18 +1510,18 @@ static int pwrap_reset_spislave(struct pmic_wrapper *wrp)
  */
 static int pwrap_init_sidly(struct pmic_wrapper *wrp)
 {
-	u32 rdata;
 	u32 i;
 	u32 pass = 0;
+	bool read_ok;
 	signed char dly[16] = {
 		-1, 0, 1, 0, 2, -1, 1, 1, 3, -1, -1, -1, 3, -1, 2, 1
 	};
 
 	for (i = 0; i < 4; i++) {
 		pwrap_writel(wrp, i, PWRAP_SIDLY);
-		pwrap_read(wrp, wrp->slave->dew_regs[PWRAP_DEW_READ_TEST],
-			   &rdata);
-		if (rdata == PWRAP_DEW_READ_TEST_VAL) {
+		read_ok = pwrap_pmic_read_test(wrp, wrp->slave->dew_regs,
+					       PWRAP_DEW_READ_TEST_VAL);
+		if (read_ok) {
 			dev_dbg(wrp->dev, "[Read Test] pass, SIDLY=%x\n", i);
 			pass |= 1 << i;
 		}
@@ -1529,8 +1541,7 @@ static int pwrap_init_sidly(struct pmic_wrapper *wrp)
 static int pwrap_init_dual_io(struct pmic_wrapper *wrp)
 {
 	int ret;
-	bool tmp;
-	u32 rdata;
+	bool read_ok, tmp;
 
 	/* Enable dual IO mode */
 	pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_DIO_EN], 1);
@@ -1546,12 +1557,9 @@ static int pwrap_init_dual_io(struct pmic_wrapper *wrp)
 	pwrap_writel(wrp, 1, PWRAP_DIO_EN);
 
 	/* Read Test */
-	pwrap_read(wrp,
-		   wrp->slave->dew_regs[PWRAP_DEW_READ_TEST], &rdata);
-	if (rdata != PWRAP_DEW_READ_TEST_VAL) {
-		dev_err(wrp->dev,
-			"Read failed on DIO mode: 0x%04x!=0x%04x\n",
-			PWRAP_DEW_READ_TEST_VAL, rdata);
+	read_ok = pwrap_pmic_read_test(wrp, wrp->slave->dew_regs, PWRAP_DEW_READ_TEST_VAL);
+	if (!read_ok) {
+		dev_err(wrp->dev, "Read failed on DIO mode.\n");
 		return -EFAULT;
 	}
 
-- 
2.40.0

[PATCH v3 3/6] soc: mediatek: pwrap: Add kerneldoc for struct pwrap_slv_type

[AngeloGioacchino Del Regno]

In preparation for adding new members with name abbreviations describe
the struct pwrap_slv_type with kerneldoc to enhance human readability.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com>
---
 drivers/soc/mediatek/mtk-pmic-wrap.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/mediatek/mtk-pmic-wrap.c b/drivers/soc/mediatek/mtk-pmic-wrap.c
index 5c500be48f7c..a33a1b1820cb 100644
--- a/drivers/soc/mediatek/mtk-pmic-wrap.c
+++ b/drivers/soc/mediatek/mtk-pmic-wrap.c
@@ -1218,11 +1218,17 @@ struct pwrap_slv_regops {
 	int (*pwrap_write)(struct pmic_wrapper *wrp, u32 adr, u32 wdata);
 };
 
+/**
+ * struct pwrap_slv_type - PMIC device wrapper definitions
+ * @dew_regs:      Device Wrapper (DeW) register offsets
+ * @type:          PMIC Type (model)
+ * @regops:        Register R/W ops
+ * @caps:          Capability flags for the target device
+ */
 struct pwrap_slv_type {
 	const u32 *dew_regs;
 	enum pmic_type type;
 	const struct pwrap_slv_regops *regops;
-	/* Flags indicating the capability for the target slave */
 	u32 caps;
 };
 
-- 
2.40.0

[PATCH v3 4/6] soc: mediatek: mtk-pmic-wrap: Add support for companion PMICs

[AngeloGioacchino Del Regno]

Some PMICs are designed to work with a companion part, which provides
more regulators and/or companion devices such as LED controllers,
display backlight controllers, battery charging, fuel gauge, etc:
this kind of PMICs are usually present in smartphone platforms, where
tight integration is required.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com>
---
 drivers/soc/mediatek/mtk-pmic-wrap.c | 73 ++++++++++++++++++++++------
 1 file changed, 59 insertions(+), 14 deletions(-)

diff --git a/drivers/soc/mediatek/mtk-pmic-wrap.c b/drivers/soc/mediatek/mtk-pmic-wrap.c
index a33a1b1820cb..366e40b802e4 100644
--- a/drivers/soc/mediatek/mtk-pmic-wrap.c
+++ b/drivers/soc/mediatek/mtk-pmic-wrap.c
@@ -47,6 +47,7 @@
 
 /* macro for device wrapper default value */
 #define PWRAP_DEW_READ_TEST_VAL		0x5aa5
+#define PWRAP_DEW_COMP_READ_TEST_VAL	0xa55a
 #define PWRAP_DEW_WRITE_TEST_VAL	0xa55a
 
 /* macro for manual command */
@@ -1222,12 +1223,16 @@ struct pwrap_slv_regops {
  * struct pwrap_slv_type - PMIC device wrapper definitions
  * @dew_regs:      Device Wrapper (DeW) register offsets
  * @type:          PMIC Type (model)
+ * @comp_dew_regs: Device Wrapper (DeW) register offsets for companion device
+ * @comp_type:     Companion PMIC Type (model)
  * @regops:        Register R/W ops
  * @caps:          Capability flags for the target device
  */
 struct pwrap_slv_type {
 	const u32 *dew_regs;
 	enum pmic_type type;
+	const u32 *comp_dew_regs;
+	enum pmic_type comp_type;
 	const struct pwrap_slv_regops *regops;
 	u32 caps;
 };
@@ -1548,9 +1553,12 @@ static int pwrap_init_dual_io(struct pmic_wrapper *wrp)
 {
 	int ret;
 	bool read_ok, tmp;
+	bool comp_read_ok = true;
 
 	/* Enable dual IO mode */
 	pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_DIO_EN], 1);
+	if (wrp->slave->comp_dew_regs)
+		pwrap_write(wrp, wrp->slave->comp_dew_regs[PWRAP_DEW_DIO_EN], 1);
 
 	/* Check IDLE & INIT_DONE in advance */
 	ret = readx_poll_timeout(pwrap_is_fsm_idle_and_sync_idle, wrp, tmp, tmp,
@@ -1564,8 +1572,14 @@ static int pwrap_init_dual_io(struct pmic_wrapper *wrp)
 
 	/* Read Test */
 	read_ok = pwrap_pmic_read_test(wrp, wrp->slave->dew_regs, PWRAP_DEW_READ_TEST_VAL);
-	if (!read_ok) {
-		dev_err(wrp->dev, "Read failed on DIO mode.\n");
+	if (wrp->slave->comp_dew_regs)
+		comp_read_ok = pwrap_pmic_read_test(wrp, wrp->slave->comp_dew_regs,
+						    PWRAP_DEW_COMP_READ_TEST_VAL);
+	if (!read_ok || !comp_read_ok) {
+		dev_err(wrp->dev, "Read failed on DIO mode. Main PMIC %s%s\n",
+			!read_ok ? "fail" : "success",
+			wrp->slave->comp_dew_regs && !comp_read_ok ?
+			", Companion PMIC fail" : "");
 		return -EFAULT;
 	}
 
@@ -1640,19 +1654,41 @@ static bool pwrap_is_cipher_ready(struct pmic_wrapper *wrp)
 	return pwrap_readl(wrp, PWRAP_CIPHER_RDY) & 1;
 }
 
-static bool pwrap_is_pmic_cipher_ready(struct pmic_wrapper *wrp)
+static bool __pwrap_is_pmic_cipher_ready(struct pmic_wrapper *wrp, const u32 *dew_regs)
 {
 	u32 rdata;
 	int ret;
 
-	ret = pwrap_read(wrp, wrp->slave->dew_regs[PWRAP_DEW_CIPHER_RDY],
-			 &rdata);
+	ret = pwrap_read(wrp, dew_regs[PWRAP_DEW_CIPHER_RDY], &rdata);
 	if (ret)
 		return false;
 
 	return rdata == 1;
 }
 
+
+static bool pwrap_is_pmic_cipher_ready(struct pmic_wrapper *wrp)
+{
+	bool ret = __pwrap_is_pmic_cipher_ready(wrp, wrp->slave->dew_regs);
+
+	if (!ret)
+		return ret;
+
+	/* If there's any companion, wait for it to be ready too */
+	if (wrp->slave->comp_dew_regs)
+		ret = __pwrap_is_pmic_cipher_ready(wrp, wrp->slave->comp_dew_regs);
+
+	return ret;
+}
+
+static void pwrap_config_cipher(struct pmic_wrapper *wrp, const u32 *dew_regs)
+{
+	pwrap_write(wrp, dew_regs[PWRAP_DEW_CIPHER_SWRST], 0x1);
+	pwrap_write(wrp, dew_regs[PWRAP_DEW_CIPHER_SWRST], 0x0);
+	pwrap_write(wrp, dew_regs[PWRAP_DEW_CIPHER_KEY_SEL], 0x1);
+	pwrap_write(wrp, dew_regs[PWRAP_DEW_CIPHER_IV_SEL], 0x2);
+}
+
 static int pwrap_init_cipher(struct pmic_wrapper *wrp)
 {
 	int ret;
@@ -1689,10 +1725,11 @@ static int pwrap_init_cipher(struct pmic_wrapper *wrp)
 	}
 
 	/* Config cipher mode @PMIC */
-	pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_CIPHER_SWRST], 0x1);
-	pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_CIPHER_SWRST], 0x0);
-	pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_CIPHER_KEY_SEL], 0x1);
-	pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_CIPHER_IV_SEL], 0x2);
+	pwrap_config_cipher(wrp, wrp->slave->dew_regs);
+
+	/* If there is any companion PMIC, configure cipher mode there too */
+	if (wrp->slave->comp_type > 0)
+		pwrap_config_cipher(wrp, wrp->slave->comp_dew_regs);
 
 	switch (wrp->slave->type) {
 	case PMIC_MT6397:
@@ -1754,6 +1791,7 @@ static int pwrap_init_cipher(struct pmic_wrapper *wrp)
 
 static int pwrap_init_security(struct pmic_wrapper *wrp)
 {
+	u32 crc_val;
 	int ret;
 
 	/* Enable encryption */
@@ -1762,14 +1800,21 @@ static int pwrap_init_security(struct pmic_wrapper *wrp)
 		return ret;
 
 	/* Signature checking - using CRC */
-	if (pwrap_write(wrp,
-			wrp->slave->dew_regs[PWRAP_DEW_CRC_EN], 0x1))
-		return -EFAULT;
+	ret = pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_CRC_EN], 0x1);
+	if (ret == 0 && wrp->slave->comp_dew_regs)
+		ret = pwrap_write(wrp, wrp->slave->comp_dew_regs[PWRAP_DEW_CRC_EN], 0x1);
 
 	pwrap_writel(wrp, 0x1, PWRAP_CRC_EN);
 	pwrap_writel(wrp, 0x0, PWRAP_SIG_MODE);
-	pwrap_writel(wrp, wrp->slave->dew_regs[PWRAP_DEW_CRC_VAL],
-		     PWRAP_SIG_ADR);
+
+	/* CRC value */
+	crc_val = wrp->slave->dew_regs[PWRAP_DEW_CRC_VAL];
+	if (wrp->slave->comp_dew_regs)
+		crc_val |= wrp->slave->comp_dew_regs[PWRAP_DEW_CRC_VAL] << 16;
+
+	pwrap_writel(wrp, crc_val, PWRAP_SIG_ADR);
+
+	/* PMIC Wrapper Arbiter priority */
 	pwrap_writel(wrp,
 		     wrp->master->arb_en_all, PWRAP_HIPRIO_ARB_EN);
 
-- 
2.40.0

[PATCH v3 5/6] soc: mediatek: mtk-pmic-wrap: Add support for MT6331 w/ MT6332 companion

[AngeloGioacchino Del Regno]

Add support for the MT6331 PMIC and for its companion MT6332 PMIC.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com>
---
 drivers/soc/mediatek/mtk-pmic-wrap.c | 47 ++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/drivers/soc/mediatek/mtk-pmic-wrap.c b/drivers/soc/mediatek/mtk-pmic-wrap.c
index 366e40b802e4..ceeac43f7bd1 100644
--- a/drivers/soc/mediatek/mtk-pmic-wrap.c
+++ b/drivers/soc/mediatek/mtk-pmic-wrap.c
@@ -170,6 +170,40 @@ static const u32 mt6323_regs[] = {
 	[PWRAP_DEW_RDDMY_NO] =		0x01a4,
 };
 
+static const u32 mt6331_regs[] = {
+	[PWRAP_DEW_DIO_EN] =		0x018c,
+	[PWRAP_DEW_READ_TEST] =		0x018e,
+	[PWRAP_DEW_WRITE_TEST] =	0x0190,
+	[PWRAP_DEW_CRC_SWRST] =		0x0192,
+	[PWRAP_DEW_CRC_EN] =		0x0194,
+	[PWRAP_DEW_CRC_VAL] =		0x0196,
+	[PWRAP_DEW_MON_GRP_SEL] =	0x0198,
+	[PWRAP_DEW_CIPHER_KEY_SEL] =	0x019a,
+	[PWRAP_DEW_CIPHER_IV_SEL] =	0x019c,
+	[PWRAP_DEW_CIPHER_EN] =		0x019e,
+	[PWRAP_DEW_CIPHER_RDY] =	0x01a0,
+	[PWRAP_DEW_CIPHER_MODE] =	0x01a2,
+	[PWRAP_DEW_CIPHER_SWRST] =	0x01a4,
+	[PWRAP_DEW_RDDMY_NO] =		0x01a6,
+};
+
+static const u32 mt6332_regs[] = {
+	[PWRAP_DEW_DIO_EN] =		0x80f6,
+	[PWRAP_DEW_READ_TEST] =		0x80f8,
+	[PWRAP_DEW_WRITE_TEST] =	0x80fa,
+	[PWRAP_DEW_CRC_SWRST] =		0x80fc,
+	[PWRAP_DEW_CRC_EN] =		0x80fe,
+	[PWRAP_DEW_CRC_VAL] =		0x8100,
+	[PWRAP_DEW_MON_GRP_SEL] =	0x8102,
+	[PWRAP_DEW_CIPHER_KEY_SEL] =	0x8104,
+	[PWRAP_DEW_CIPHER_IV_SEL] =	0x8106,
+	[PWRAP_DEW_CIPHER_EN] =		0x8108,
+	[PWRAP_DEW_CIPHER_RDY] =	0x810a,
+	[PWRAP_DEW_CIPHER_MODE] =	0x810c,
+	[PWRAP_DEW_CIPHER_SWRST] =	0x810e,
+	[PWRAP_DEW_RDDMY_NO] =		0x8110,
+};
+
 static const u32 mt6351_regs[] = {
 	[PWRAP_DEW_DIO_EN] =		0x02F2,
 	[PWRAP_DEW_READ_TEST] =		0x02F4,
@@ -1182,6 +1216,8 @@ static int mt8186_regs[] = {
 
 enum pmic_type {
 	PMIC_MT6323,
+	PMIC_MT6331,
+	PMIC_MT6332,
 	PMIC_MT6351,
 	PMIC_MT6357,
 	PMIC_MT6358,
@@ -2041,6 +2077,16 @@ static const struct pwrap_slv_type pmic_mt6323 = {
 		PWRAP_SLV_CAP_SECURITY,
 };
 
+static const struct pwrap_slv_type pmic_mt6331 = {
+	.dew_regs = mt6331_regs,
+	.type = PMIC_MT6331,
+	.comp_dew_regs = mt6332_regs,
+	.comp_type = PMIC_MT6332,
+	.regops = &pwrap_regops16,
+	.caps = PWRAP_SLV_CAP_SPI | PWRAP_SLV_CAP_DUALIO |
+		PWRAP_SLV_CAP_SECURITY,
+};
+
 static const struct pwrap_slv_type pmic_mt6351 = {
 	.dew_regs = mt6351_regs,
 	.type = PMIC_MT6351,
@@ -2086,6 +2132,7 @@ static const struct pwrap_slv_type pmic_mt6397 = {
 
 static const struct of_device_id of_slave_match_tbl[] = {
 	{ .compatible = "mediatek,mt6323", .data = &pmic_mt6323 },
+	{ .compatible = "mediatek,mt6331", .data = &pmic_mt6331 },
 	{ .compatible = "mediatek,mt6351", .data = &pmic_mt6351 },
 	{ .compatible = "mediatek,mt6357", .data = &pmic_mt6357 },
 	{ .compatible = "mediatek,mt6358", .data = &pmic_mt6358 },
-- 
2.40.0

[PATCH v3 6/6] soc: mediatek: pwrap: Add support for MT6795 Helio X10

[AngeloGioacchino Del Regno]

Add the necessary bits to support the MT6795 Helio X10 smartphone SoC:
this is always paired with a MT6331 PMIC, with MT6332 companion.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 drivers/soc/mediatek/mtk-pmic-wrap.c | 136 ++++++++++++++++++++++++++-
 1 file changed, 135 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/mediatek/mtk-pmic-wrap.c b/drivers/soc/mediatek/mtk-pmic-wrap.c
index ceeac43f7bd1..11095b8de71a 100644
--- a/drivers/soc/mediatek/mtk-pmic-wrap.c
+++ b/drivers/soc/mediatek/mtk-pmic-wrap.c
@@ -639,6 +639,91 @@ static int mt6779_regs[] = {
 	[PWRAP_WACS2_VLDCLR] =		0xC28,
 };
 
+static int mt6795_regs[] = {
+	[PWRAP_MUX_SEL] =		0x0,
+	[PWRAP_WRAP_EN] =		0x4,
+	[PWRAP_DIO_EN] =		0x8,
+	[PWRAP_SIDLY] =			0xc,
+	[PWRAP_RDDMY] =			0x10,
+	[PWRAP_SI_CK_CON] =		0x14,
+	[PWRAP_CSHEXT_WRITE] =		0x18,
+	[PWRAP_CSHEXT_READ] =		0x1c,
+	[PWRAP_CSLEXT_START] =		0x20,
+	[PWRAP_CSLEXT_END] =		0x24,
+	[PWRAP_STAUPD_PRD] =		0x28,
+	[PWRAP_STAUPD_GRPEN] =		0x2c,
+	[PWRAP_EINT_STA0_ADR] =		0x30,
+	[PWRAP_EINT_STA1_ADR] =		0x34,
+	[PWRAP_STAUPD_MAN_TRIG] =	0x40,
+	[PWRAP_STAUPD_STA] =		0x44,
+	[PWRAP_WRAP_STA] =		0x48,
+	[PWRAP_HARB_INIT] =		0x4c,
+	[PWRAP_HARB_HPRIO] =		0x50,
+	[PWRAP_HIPRIO_ARB_EN] =		0x54,
+	[PWRAP_HARB_STA0] =		0x58,
+	[PWRAP_HARB_STA1] =		0x5c,
+	[PWRAP_MAN_EN] =		0x60,
+	[PWRAP_MAN_CMD] =		0x64,
+	[PWRAP_MAN_RDATA] =		0x68,
+	[PWRAP_MAN_VLDCLR] =		0x6c,
+	[PWRAP_WACS0_EN] =		0x70,
+	[PWRAP_INIT_DONE0] =		0x74,
+	[PWRAP_WACS0_CMD] =		0x78,
+	[PWRAP_WACS0_RDATA] =		0x7c,
+	[PWRAP_WACS0_VLDCLR] =		0x80,
+	[PWRAP_WACS1_EN] =		0x84,
+	[PWRAP_INIT_DONE1] =		0x88,
+	[PWRAP_WACS1_CMD] =		0x8c,
+	[PWRAP_WACS1_RDATA] =		0x90,
+	[PWRAP_WACS1_VLDCLR] =		0x94,
+	[PWRAP_WACS2_EN] =		0x98,
+	[PWRAP_INIT_DONE2] =		0x9c,
+	[PWRAP_WACS2_CMD] =		0xa0,
+	[PWRAP_WACS2_RDATA] =		0xa4,
+	[PWRAP_WACS2_VLDCLR] =		0xa8,
+	[PWRAP_INT_EN] =		0xac,
+	[PWRAP_INT_FLG_RAW] =		0xb0,
+	[PWRAP_INT_FLG] =		0xb4,
+	[PWRAP_INT_CLR] =		0xb8,
+	[PWRAP_SIG_ADR] =		0xbc,
+	[PWRAP_SIG_MODE] =		0xc0,
+	[PWRAP_SIG_VALUE] =		0xc4,
+	[PWRAP_SIG_ERRVAL] =		0xc8,
+	[PWRAP_CRC_EN] =		0xcc,
+	[PWRAP_TIMER_EN] =		0xd0,
+	[PWRAP_TIMER_STA] =		0xd4,
+	[PWRAP_WDT_UNIT] =		0xd8,
+	[PWRAP_WDT_SRC_EN] =		0xdc,
+	[PWRAP_WDT_FLG] =		0xe0,
+	[PWRAP_DEBUG_INT_SEL] =		0xe4,
+	[PWRAP_DVFS_ADR0] =		0xe8,
+	[PWRAP_DVFS_WDATA0] =		0xec,
+	[PWRAP_DVFS_ADR1] =		0xf0,
+	[PWRAP_DVFS_WDATA1] =		0xf4,
+	[PWRAP_DVFS_ADR2] =		0xf8,
+	[PWRAP_DVFS_WDATA2] =		0xfc,
+	[PWRAP_DVFS_ADR3] =		0x100,
+	[PWRAP_DVFS_WDATA3] =		0x104,
+	[PWRAP_DVFS_ADR4] =		0x108,
+	[PWRAP_DVFS_WDATA4] =		0x10c,
+	[PWRAP_DVFS_ADR5] =		0x110,
+	[PWRAP_DVFS_WDATA5] =		0x114,
+	[PWRAP_DVFS_ADR6] =		0x118,
+	[PWRAP_DVFS_WDATA6] =		0x11c,
+	[PWRAP_DVFS_ADR7] =		0x120,
+	[PWRAP_DVFS_WDATA7] =		0x124,
+	[PWRAP_SPMINF_STA] =		0x128,
+	[PWRAP_CIPHER_KEY_SEL] =	0x12c,
+	[PWRAP_CIPHER_IV_SEL] =		0x130,
+	[PWRAP_CIPHER_EN] =		0x134,
+	[PWRAP_CIPHER_RDY] =		0x138,
+	[PWRAP_CIPHER_MODE] =		0x13c,
+	[PWRAP_CIPHER_SWRST] =		0x140,
+	[PWRAP_DCM_EN] =		0x144,
+	[PWRAP_DCM_DBC_PRD] =		0x148,
+	[PWRAP_EXT_CK] =		0x14c,
+};
+
 static int mt6797_regs[] = {
 	[PWRAP_MUX_SEL] =		0x0,
 	[PWRAP_WRAP_EN] =		0x4,
@@ -1230,6 +1315,7 @@ enum pwrap_type {
 	PWRAP_MT2701,
 	PWRAP_MT6765,
 	PWRAP_MT6779,
+	PWRAP_MT6795,
 	PWRAP_MT6797,
 	PWRAP_MT6873,
 	PWRAP_MT7622,
@@ -1650,6 +1736,20 @@ static void pwrap_init_chip_select_ext(struct pmic_wrapper *wrp, u8 hext_write,
 static int pwrap_common_init_reg_clock(struct pmic_wrapper *wrp)
 {
 	switch (wrp->master->type) {
+	case PWRAP_MT6795:
+		if (wrp->slave->type == PMIC_MT6331) {
+			const u32 *dew_regs = wrp->slave->dew_regs;
+
+			pwrap_write(wrp, dew_regs[PWRAP_DEW_RDDMY_NO], 0x8);
+
+			if (wrp->slave->comp_type == PMIC_MT6332) {
+				dew_regs = wrp->slave->comp_dew_regs;
+				pwrap_write(wrp, dew_regs[PWRAP_DEW_RDDMY_NO], 0x8);
+			}
+		}
+		pwrap_writel(wrp, 0x88, PWRAP_RDDMY);
+		pwrap_init_chip_select_ext(wrp, 15, 15, 15, 15);
+		break;
 	case PWRAP_MT8173:
 		pwrap_init_chip_select_ext(wrp, 0, 4, 2, 2);
 		break;
@@ -1744,6 +1844,7 @@ static int pwrap_init_cipher(struct pmic_wrapper *wrp)
 	case PWRAP_MT2701:
 	case PWRAP_MT6765:
 	case PWRAP_MT6779:
+	case PWRAP_MT6795:
 	case PWRAP_MT6797:
 	case PWRAP_MT8173:
 	case PWRAP_MT8186:
@@ -1914,6 +2015,19 @@ static int pwrap_mt2701_init_soc_specific(struct pmic_wrapper *wrp)
 	return 0;
 }
 
+static int pwrap_mt6795_init_soc_specific(struct pmic_wrapper *wrp)
+{
+	pwrap_writel(wrp, 0xf, PWRAP_STAUPD_GRPEN);
+
+	if (wrp->slave->type == PMIC_MT6331)
+		pwrap_writel(wrp, 0x1b4, PWRAP_EINT_STA0_ADR);
+
+	if (wrp->slave->comp_type == PMIC_MT6332)
+		pwrap_writel(wrp, 0x8112, PWRAP_EINT_STA1_ADR);
+
+	return 0;
+}
+
 static int pwrap_mt7622_init_soc_specific(struct pmic_wrapper *wrp)
 {
 	pwrap_writel(wrp, 0, PWRAP_STAUPD_PRD);
@@ -1949,10 +2063,16 @@ static int pwrap_init(struct pmic_wrapper *wrp)
 	if (wrp->rstc_bridge)
 		reset_control_reset(wrp->rstc_bridge);
 
-	if (wrp->master->type == PWRAP_MT8173) {
+	switch (wrp->master->type) {
+	case PWRAP_MT6795:
+		fallthrough;
+	case PWRAP_MT8173:
 		/* Enable DCM */
 		pwrap_writel(wrp, 3, PWRAP_DCM_EN);
 		pwrap_writel(wrp, 0, PWRAP_DCM_DBC_PRD);
+		break;
+	default:
+		break;
 	}
 
 	if (HAS_CAP(wrp->slave->caps, PWRAP_SLV_CAP_SPI)) {
@@ -2185,6 +2305,19 @@ static const struct pmic_wrapper_type pwrap_mt6779 = {
 	.init_soc_specific = NULL,
 };
 
+static const struct pmic_wrapper_type pwrap_mt6795 = {
+	.regs = mt6795_regs,
+	.type = PWRAP_MT6795,
+	.arb_en_all = 0x3f,
+	.int_en_all = ~(u32)(BIT(31) | BIT(2) | BIT(1)),
+	.int1_en_all = 0,
+	.spi_w = PWRAP_MAN_CMD_SPI_WRITE,
+	.wdt_src = PWRAP_WDT_SRC_MASK_NO_STAUPD,
+	.caps = PWRAP_CAP_RESET | PWRAP_CAP_DCM,
+	.init_reg_clock = pwrap_common_init_reg_clock,
+	.init_soc_specific = pwrap_mt6795_init_soc_specific,
+};
+
 static const struct pmic_wrapper_type pwrap_mt6797 = {
 	.regs = mt6797_regs,
 	.type = PWRAP_MT6797,
@@ -2318,6 +2451,7 @@ static const struct of_device_id of_pwrap_match_tbl[] = {
 	{ .compatible = "mediatek,mt2701-pwrap", .data = &pwrap_mt2701 },
 	{ .compatible = "mediatek,mt6765-pwrap", .data = &pwrap_mt6765 },
 	{ .compatible = "mediatek,mt6779-pwrap", .data = &pwrap_mt6779 },
+	{ .compatible = "mediatek,mt6795-pwrap", .data = &pwrap_mt6795 },
 	{ .compatible = "mediatek,mt6797-pwrap", .data = &pwrap_mt6797 },
 	{ .compatible = "mediatek,mt6873-pwrap", .data = &pwrap_mt6873 },
 	{ .compatible = "mediatek,mt7622-pwrap", .data = &pwrap_mt7622 },
-- 
2.40.0

Re: [PATCH v3 6/6] soc: mediatek: pwrap: Add support for MT6795 Helio X10

[Alexandre Mergnat]

On 12/04/2023 15:12, AngeloGioacchino Del Regno wrote:
> Add the necessary bits to support the MT6795 Helio X10 smartphone SoC:
> this is always paired with a MT6331 PMIC, with MT6332 companion.
>
> Signed-off-by: AngeloGioacchino Del Regno<angelogioacchino.delregno@collabora.com>

Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com>

Regards,
Alexandre

Re: [PATCH v3 0/6] MediaTek Helio X10 MT6795 - MT6331/6332 PMIC Wrapper

[Matthias Brugger]

On 12/04/2023 15:12, AngeloGioacchino Del Regno wrote:
> Changes in v3:
>   - Rebased on next-20230412
>   - Changed if branch to switch in pwrap_init() as suggested
>     by Matthias and Alexandre.
> 
> Changes in v2:
>   - Rebased on next-20230323
>   - Changed pwrap.txt addition to new yaml file addition
> 
> In an effort to give some love to the apparently forgotten MT6795 SoC,
> I am upstreaming more components that are necessary to support platforms
> powered by this one apart from a simple boot to serial console.
> 
> This series introduces support in the PMIC Wrapper for a different PMIC
> topology, which is commonly found on smartphone boards, using one main
> PMIC and one Companion/Sub PMIC, both accessible *only* through the pwrap;
> be aware that this kind of topology is not *specific to* the Helio X10
> SoC, but common across many kinds of MediaTek smartphone oriented SoCs
> and board designs.
> 
> That said, support for the PMIC combo MT6331+MT6332 is provided in this
> series in a form that will be able to initialize the PMICs with crypto
> and DualIO but nothing else: these PMICs are very featureful, so I have
> decided to add this support in more than just one step, as there will
> be multiple patches for multiple different subsystems (..it's a mfd!..).
> 
> Tested on a MT6795 Sony Xperia M5 (codename "Holly") smartphone.
> 
> AngeloGioacchino Del Regno (6):
>    dt-bindings: soc: mediatek: pwrap: Add compatible for MT6795 Helio X10
>    soc: mediatek: pwrap: Move PMIC read test sequence in function
>    soc: mediatek: pwrap: Add kerneldoc for struct pwrap_slv_type
>    soc: mediatek: mtk-pmic-wrap: Add support for companion PMICs
>    soc: mediatek: mtk-pmic-wrap: Add support for MT6331 w/ MT6332
>      companion
>    soc: mediatek: pwrap: Add support for MT6795 Helio X10
> 
>   .../bindings/soc/mediatek/mediatek,pwrap.yaml |   1 +
>   drivers/soc/mediatek/mtk-pmic-wrap.c          | 292 ++++++++++++++++--
>   2 files changed, 267 insertions(+), 26 deletions(-)
> 

Applied thanks!