regulator: axp20x: add support for the AXP717

The X-Powers AXP717 is a typical PMIC from X-Powers, featuring four
DC/DC converters and 15 LDOs, on the regulator side.

Describe the chip's voltage settings and switch registers, how the
voltages are encoded, and connect this to the MFD device via its
regulator ID.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Mark Brown <broonie@kernel.org>
Tested-by: Ryan Walklin <ryan@testtoast.com>
Link: https://lore.kernel.org/r/20240310010211.28653-5-andre.przywara@arm.com
Signed-off-by: Lee Jones <lee@kernel.org>

2 files changed, 105 insertions, 0 deletions

diff --git a/drivers/regulator/axp20x-regulator.c b/drivers/regulator/axp20x-regulator.c
index 7bcc2d508b65..34fcdd82b2ea 100644
--- a/drivers/regulator/axp20x-regulator.c
+++ b/drivers/regulator/axp20x-regulator.c
@@ -138,6 +138,12 @@
 #define AXP313A_DCDC_V_OUT_MASK		GENMASK(6, 0)
 #define AXP313A_LDO_V_OUT_MASK		GENMASK(4, 0)
 
+#define AXP717_DCDC1_NUM_VOLTAGES	88
+#define AXP717_DCDC2_NUM_VOLTAGES	107
+#define AXP717_DCDC3_NUM_VOLTAGES	104
+#define AXP717_DCDC_V_OUT_MASK		GENMASK(6, 0)
+#define AXP717_LDO_V_OUT_MASK		GENMASK(4, 0)
+
 #define AXP803_PWR_OUT_DCDC1_MASK	BIT_MASK(0)
 #define AXP803_PWR_OUT_DCDC2_MASK	BIT_MASK(1)
 #define AXP803_PWR_OUT_DCDC3_MASK	BIT_MASK(2)
@@ -752,6 +758,79 @@ static const struct regulator_desc axp313a_regulators[] = {
 	AXP_DESC_FIXED(AXP313A, RTC_LDO, "rtc-ldo", "vin1", 1800),
 };
 
+static const struct linear_range axp717_dcdc1_ranges[] = {
+	REGULATOR_LINEAR_RANGE(500000,   0, 70, 10000),
+	REGULATOR_LINEAR_RANGE(1220000, 71, 87, 20000),
+};
+
+static const struct linear_range axp717_dcdc2_ranges[] = {
+	REGULATOR_LINEAR_RANGE(500000,   0,  70,  10000),
+	REGULATOR_LINEAR_RANGE(1220000, 71,  87,  20000),
+	REGULATOR_LINEAR_RANGE(1600000, 88, 107, 100000),
+};
+
+static const struct linear_range axp717_dcdc3_ranges[] = {
+	REGULATOR_LINEAR_RANGE(500000,   0,  70, 10000),
+	REGULATOR_LINEAR_RANGE(1220000, 71, 102, 20000),
+};
+
+static const struct regulator_desc axp717_regulators[] = {
+	AXP_DESC_RANGES(AXP717, DCDC1, "dcdc1", "vin1",
+			axp717_dcdc1_ranges, AXP717_DCDC1_NUM_VOLTAGES,
+			AXP717_DCDC1_CONTROL, AXP717_DCDC_V_OUT_MASK,
+			AXP717_DCDC_OUTPUT_CONTROL, BIT(0)),
+	AXP_DESC_RANGES(AXP717, DCDC2, "dcdc2", "vin2",
+			axp717_dcdc2_ranges, AXP717_DCDC2_NUM_VOLTAGES,
+			AXP717_DCDC2_CONTROL, AXP717_DCDC_V_OUT_MASK,
+			AXP717_DCDC_OUTPUT_CONTROL, BIT(1)),
+	AXP_DESC_RANGES(AXP717, DCDC3, "dcdc3", "vin3",
+			axp717_dcdc3_ranges, AXP717_DCDC3_NUM_VOLTAGES,
+			AXP717_DCDC3_CONTROL, AXP717_DCDC_V_OUT_MASK,
+			AXP717_DCDC_OUTPUT_CONTROL, BIT(2)),
+	AXP_DESC(AXP717, DCDC4, "dcdc4", "vin4", 1000, 3700, 100,
+		 AXP717_DCDC4_CONTROL, AXP717_DCDC_V_OUT_MASK,
+		 AXP717_DCDC_OUTPUT_CONTROL, BIT(3)),
+	AXP_DESC(AXP717, ALDO1, "aldo1", "vin1", 500, 3500, 100,
+		 AXP717_ALDO1_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO0_OUTPUT_CONTROL, BIT(0)),
+	AXP_DESC(AXP717, ALDO2, "aldo2", "vin1", 500, 3500, 100,
+		 AXP717_ALDO2_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO0_OUTPUT_CONTROL, BIT(1)),
+	AXP_DESC(AXP717, ALDO3, "aldo3", "vin1", 500, 3500, 100,
+		 AXP717_ALDO3_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO0_OUTPUT_CONTROL, BIT(2)),
+	AXP_DESC(AXP717, ALDO4, "aldo4", "vin1", 500, 3500, 100,
+		 AXP717_ALDO4_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO0_OUTPUT_CONTROL, BIT(3)),
+	AXP_DESC(AXP717, BLDO1, "bldo1", "vin1", 500, 3500, 100,
+		 AXP717_BLDO1_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO0_OUTPUT_CONTROL, BIT(4)),
+	AXP_DESC(AXP717, BLDO2, "bldo2", "vin1", 500, 3500, 100,
+		 AXP717_BLDO2_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO0_OUTPUT_CONTROL, BIT(5)),
+	AXP_DESC(AXP717, BLDO3, "bldo3", "vin1", 500, 3500, 100,
+		 AXP717_BLDO3_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO0_OUTPUT_CONTROL, BIT(6)),
+	AXP_DESC(AXP717, BLDO4, "bldo4", "vin1", 500, 3500, 100,
+		 AXP717_BLDO4_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO0_OUTPUT_CONTROL, BIT(7)),
+	AXP_DESC(AXP717, CLDO1, "cldo1", "vin1", 500, 3500, 100,
+		 AXP717_CLDO1_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO1_OUTPUT_CONTROL, BIT(0)),
+	AXP_DESC(AXP717, CLDO2, "cldo2", "vin1", 500, 3500, 100,
+		 AXP717_CLDO2_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO1_OUTPUT_CONTROL, BIT(1)),
+	AXP_DESC(AXP717, CLDO3, "cldo3", "vin1", 500, 3500, 100,
+		 AXP717_CLDO3_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO1_OUTPUT_CONTROL, BIT(2)),
+	AXP_DESC(AXP717, CLDO4, "cldo4", "vin1", 500, 3500, 100,
+		 AXP717_CLDO4_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO1_OUTPUT_CONTROL, BIT(3)),
+	AXP_DESC(AXP717, CPUSLDO, "cpusldo", "vin1", 500, 1400, 50,
+		 AXP717_CPUSLDO_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO1_OUTPUT_CONTROL, BIT(4)),
+};
+
 /* DCDC ranges shared with AXP813 */
 static const struct linear_range axp803_dcdc234_ranges[] = {
 	REGULATOR_LINEAR_RANGE(500000,
@@ -1253,6 +1332,7 @@ static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
 		step = 150;
 		break;
 	case AXP313A_ID:
+	case AXP717_ID:
 	case AXP15060_ID:
 		/* The DCDC PWM frequency seems to be fixed to 3 MHz. */
 		if (dcdcfreq != 0) {
@@ -1479,6 +1559,10 @@ static int axp20x_regulator_probe(struct platform_device *pdev)
 		regulators = axp313a_regulators;
 		nregulators = AXP313A_REG_ID_MAX;
 		break;
+	case AXP717_ID:
+		regulators = axp717_regulators;
+		nregulators = AXP717_REG_ID_MAX;
+		break;
 	case AXP803_ID:
 		regulators = axp803_regulators;
 		nregulators = AXP803_REG_ID_MAX;
diff --git a/include/linux/mfd/axp20x.h b/include/linux/mfd/axp20x.h
index fd7a41a69526..8c0a33a2e9ce 100644
--- a/include/linux/mfd/axp20x.h
+++ b/include/linux/mfd/axp20x.h
@@ -467,6 +467,27 @@ enum {
 };
 
 enum {
+	AXP717_DCDC1 = 0,
+	AXP717_DCDC2,
+	AXP717_DCDC3,
+	AXP717_DCDC4,
+	AXP717_ALDO1,
+	AXP717_ALDO2,
+	AXP717_ALDO3,
+	AXP717_ALDO4,
+	AXP717_BLDO1,
+	AXP717_BLDO2,
+	AXP717_BLDO3,
+	AXP717_BLDO4,
+	AXP717_CLDO1,
+	AXP717_CLDO2,
+	AXP717_CLDO3,
+	AXP717_CLDO4,
+	AXP717_CPUSLDO,
+	AXP717_REG_ID_MAX,
+};
+
+enum {
 	AXP806_DCDCA = 0,
 	AXP806_DCDCB,
 	AXP806_DCDCC,