power: pmic: tps65910: add TPS65911 PMIC support

Add support to bind the regulators/child nodes with the pmic.
Also adds the pmic i2c based read/write functions to access pmic
registers.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

3 files changed, 134 insertions, 3 deletions

diff --git a/doc/device-tree-bindings/pmic/tps65911.txt b/doc/device-tree-bindings/pmic/tps65911.txt
new file mode 100644
index 0000000..29270ef
--- /dev/null
+++ b/doc/device-tree-bindings/pmic/tps65911.txt
@@ -0,0 +1,78 @@
+Texas Instruments, TPS65911 PMIC
+
+This device uses two drivers:
+- drivers/power/pmic/tps65910.c (for parent device)
+- drivers/power/regulator/tps65911_regulator.c (for child regulators)
+
+This chapter describes the binding info for the PMIC driver and regulators.
+
+Required properties for PMIC:
+- compatible: "ti,tps65911"
+- reg: 0x2d
+
+With those two properties, the pmic device can be used for read/write only.
+To bind each regulator, the optional regulators subnode should exists.
+
+Optional subnode:
+- name: regulators (subnode list of each device's regulator)
+
+Regulators subnode contains set on supported regulators.
+
+Required properties:
+- regulator-name: used for regulator uclass platform data '.name',
+
+List of supported regulator nodes names for tps65911:
+- vdd1, vdd2, vddctrl, vddio
+- ldo1, ldo2, ldo3, ldo4, ldo5, ldo6, ldo7, ldo8
+
+vddio in datasheet is referred as vio, but for reduction of code and
+unification of smps regulators it is named vddio.
+
+Optional:
+- regulator-min-microvolt: minimum allowed Voltage to set
+- regulator-max-microvolt: minimum allowed Voltage to set
+- regulator-always-on: regulator should be never disabled
+- regulator-boot-on: regulator should be enabled by the bootloader
+
+Example:
+
+tps65911@2d {
+	compatible = "ti,tps65911";
+	reg = <0x2d>;
+
+	regulators {
+		vdd1 {
+			regulator-name = "vdd_1v2_backlight";
+			regulator-min-microvolt = <1200000>;
+			regulator-max-microvolt = <1200000>;
+			regulator-always-on;
+			regulator-boot-on;
+		};
+
+		...
+
+		vddio {
+			regulator-name = "vdd_1v8_gen";
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <1800000>;
+			regulator-always-on;
+			regulator-boot-on;
+		};
+
+		ldo1 {
+			regulator-name = "vdd_emmc_core";
+			regulator-min-microvolt = <3300000>;
+			regulator-max-microvolt = <3300000>;
+			regulator-always-on;
+			regulator-boot-on;
+		};
+
+		...
+
+		ldo8 {
+			regulator-name = "vdd_ddr_hs";
+			regulator-min-microvolt = <1000000>;
+			regulator-max-microvolt = <1000000>;
+		};
+	};
+};
diff --git a/drivers/power/pmic/pmic_tps65910_dm.c b/drivers/power/pmic/pmic_tps65910_dm.c
index 8ead1db..0a4911c 100644
--- a/drivers/power/pmic/pmic_tps65910_dm.c
+++ b/drivers/power/pmic/pmic_tps65910_dm.c
@@ -12,13 +12,19 @@
 #include <power/regulator.h>
 #include <power/tps65910_pmic.h>
 
-static const struct pmic_child_info pmic_children_info[] = {
+static const struct pmic_child_info tps65910_children_info[] = {
 	{ .prefix = "ldo_", .driver = TPS65910_LDO_DRIVER },
 	{ .prefix = "buck_", .driver = TPS65910_BUCK_DRIVER },
 	{ .prefix = "boost_", .driver = TPS65910_BOOST_DRIVER },
 	{ },
 };
 
+static const struct pmic_child_info tps65911_children_info[] = {
+	{ .prefix = "ldo", .driver = TPS65911_LDO_DRIVER },
+	{ .prefix = "vdd", .driver = TPS65911_VDD_DRIVER },
+	{ },
+};
+
 static int pmic_tps65910_reg_count(struct udevice *dev)
 {
 	return TPS65910_NUM_REGS;
@@ -50,6 +56,8 @@ static int pmic_tps65910_read(struct udevice *dev, uint reg, u8 *buffer,
 
 static int pmic_tps65910_bind(struct udevice *dev)
 {
+	const struct pmic_child_info *tps6591x_children_info =
+			(struct pmic_child_info *)dev_get_driver_data(dev);
 	ofnode regulators_node;
 	int children;
 
@@ -59,7 +67,7 @@ static int pmic_tps65910_bind(struct udevice *dev)
 		return -EINVAL;
 	}
 
-	children = pmic_bind_children(dev, regulators_node, pmic_children_info);
+	children = pmic_bind_children(dev, regulators_node, tps6591x_children_info);
 	if (!children)
 		debug("%s has no children (regulators)\n", dev->name);
 
@@ -83,7 +91,8 @@ static struct dm_pmic_ops pmic_tps65910_ops = {
 };
 
 static const struct udevice_id pmic_tps65910_match[] = {
-	{ .compatible = "ti,tps65910" },
+	{ .compatible = "ti,tps65910", .data = (ulong)&tps65910_children_info },
+	{ .compatible = "ti,tps65911", .data = (ulong)&tps65911_children_info },
 	{ /* sentinel */ }
 };
 
diff --git a/include/power/tps65910_pmic.h b/include/power/tps65910_pmic.h
index 6621478..7d6545a 100644
--- a/include/power/tps65910_pmic.h
+++ b/include/power/tps65910_pmic.h
@@ -126,4 +126,48 @@ struct tps65910_regulator_pdata {
 #define TPS65910_BOOST_DRIVER	"tps65910_boost"
 #define TPS65910_LDO_DRIVER	"tps65910_ldo"
 
+/* tps65911 i2c registers */
+enum {
+	TPS65911_REG_VIO			= 0x20,
+	TPS65911_REG_VDD1,
+	TPS65911_REG_VDD1_OP,
+	TPS65911_REG_VDD1_SR,
+	TPS65911_REG_VDD2,
+	TPS65911_REG_VDD2_OP,
+	TPS65911_REG_VDD2_SR,
+	TPS65911_REG_VDDCTRL,
+	TPS65911_REG_VDDCTRL_OP,
+	TPS65911_REG_VDDCTRL_SR,
+	TPS65911_REG_LDO1			= 0x30,
+	TPS65911_REG_LDO2,
+	TPS65911_REG_LDO5,
+	TPS65911_REG_LDO8,
+	TPS65911_REG_LDO7,
+	TPS65911_REG_LDO6,
+	TPS65911_REG_LDO4,
+	TPS65911_REG_LDO3,
+};
+
+#define TPS65911_VDD_NUM		4
+#define TPS65911_LDO_NUM		8
+
+#define TPS65911_VDD_VOLT_MAX		1500000
+#define TPS65911_VDD_VOLT_MIN		600000
+#define TPS65911_VDD_VOLT_BASE		562500
+
+#define TPS65911_LDO_VOLT_MAX		3300000
+#define TPS65911_LDO_VOLT_BASE		800000
+
+#define TPS65911_LDO_SEL_MASK		(0x3f << 2)
+
+#define TPS65911_LDO124_VOLT_MAX_HEX	0x32
+#define TPS65911_LDO358_VOLT_MAX_HEX	0x19
+#define TPS65911_LDO358_VOLT_MIN_HEX	0x02
+
+#define TPS65911_LDO124_VOLT_STEP	50000
+#define TPS65911_LDO358_VOLT_STEP	100000
+
+#define TPS65911_VDD_DRIVER		"tps65911_vdd"
+#define TPS65911_LDO_DRIVER		"tps65911_ldo"
+
 #endif /* __TPS65910_PMIC_H_ */