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+Binding for TI/National Semiconductor LP872x Driver
+
+Required properties:
+ - compatible: "ti,lp8720" or "ti,lp8725"
+ - reg: I2C slave address. 0x7d = LP8720, 0x7a = LP8725
+
+Optional properties:
+ - ti,general-config: the value of LP872X_GENERAL_CFG register (u8)
+ (LP8720)
+ bit[2]: BUCK output voltage control by external DVS pin or register
+ 1 = external pin, 0 = bit7 of register 08h
+ bit[1]: sleep control by external DVS pin or register
+ 1 = external pin, 0 = bit6 of register 08h
+ bit[0]: time step unit(usec). 1 = 25, 0 = 50
+
+ (LP8725)
+ bit[7:6]: time step unit(usec). 00 = 32, 01 = 64, 10 = 128, 11 = 256
+ bit[4]: BUCK2 enable control. 1 = enable, 0 = disable
+ bit[3]: BUCK2 output voltage register address. 1 = 0Ah, 0 = 0Bh
+ bit[2]: BUCK1 output voltage control by external DVS pin or register
+ 1 = register 08h, 0 = DVS
+ bit[1]: LDO sleep control. 1 = sleep mode, 0 = normal
+ bit[0]: BUCK1 enable control, 1 = enable, 0 = disable
+
+ For more details, please see the datasheet.
+
+ - ti,update-config: define it when LP872X_GENERAL_CFG register should be set
+ - ti,dvs-gpio: GPIO specifier for external DVS pin control of LP872x devices.
+ - ti,dvs-vsel: DVS selector. 0 = SEL_V1, 1 = SEL_V2.
+ - ti,dvs-state: initial DVS pin state. 0 = DVS_LOW, 1 = DVS_HIGH.
+ - enable-gpios: GPIO specifier for EN pin control of LP872x devices.
+
+ Sub nodes for regulator_init_data
+ LP8720 has maximum 6 nodes. (child name: ldo1 ~ 5 and buck)
+ LP8725 has maximum 9 nodes. (child name: ldo1 ~ 5, lilo1,2 and buck1,2)
+ For more details, please see the following binding document.
+ (Documentation/devicetree/bindings/regulator/regulator.txt)
+
+Datasheet
+ - LP8720: https://www.ti.com/lit/ds/symlink/lp8720.pdf
+ - LP8725: https://www.ti.com/lit/ds/symlink/lp8725.pdf
+
+Example 1) LP8720
+
+lp8720@7d {
+ compatible = "ti,lp8720";
+ reg = <0x7d>;
+
+ /* external DVS pin used, timestep is 25usec */
+ ti,general-config = /bits/ 8 <0x03>;
+ ti,update-config;
+
+ /*
+ * The dvs-gpio depends on the processor environment.
+ * For example, following GPIO specifier means GPIO134 in OMAP4.
+ */
+ ti,dvs-gpio = <&gpio5 6 0>;
+ ti,dvs-vsel = /bits/ 8 <1>; /* SEL_V2 */
+ ti,dvs-state = /bits/ 8 <1>; /* DVS_HIGH */
+
+ vaf: ldo1 {
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ vmmc: ldo2 {
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ vcam_io: ldo3 {
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ };
+
+ vcam_core: ldo4 {
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <2850000>;
+ regulator-boot-on;
+ };
+
+ vcam: ldo5 {
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ vcc: buck {
+ regulator-name = "VBUCK";
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <2300000>;
+ };
+};
+
+Example 2) LP8725
+
+lp8725@7a {
+ compatible = "ti,lp8725";
+ reg = <0x7a>;
+
+ /* Enable BUCK1,2, no DVS, normal LDO mode, timestep is 256usec */
+ ti,general-config = /bits/ 8 <0xdd>;
+ ti,update-config;
+
+ vcam_io: ldo1 {
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ vcam_core: ldo2 {
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ vcam: ldo3 {
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ vcmmb_io: ldo4 {
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ };
+
+ vcmmb_core: ldo5 {
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ };
+
+ vaux1: lilo1 {
+ regulator-name = "VAUX1";
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ vaux2: lilo2 {
+ regulator-name = "VAUX2";
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ vcc1: buck1 {
+ regulator-name = "VBUCK1";
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <3000000>;
+ regulator-min-microamp = <460000>;
+ regulator-max-microamp = <1370000>;
+ regulator-boot-on;
+ };
+
+ vcc2: buck2 {
+ regulator-name = "VBUCK2";
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <3000000>;
+ regulator-min-microamp = <460000>;
+ regulator-max-microamp = <1370000>;
+ regulator-boot-on;
+ };
+};