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-Binding for Samsung S5M8767 regulator block
-===========================================
-
-This is a part of device tree bindings for S5M family multi-function devices.
-More information can be found in bindings/mfd/sec-core.txt file.
-
-The S5M8767 device provide buck and LDO regulators.
-
-To register these with regulator framework instantiate under main device node
-a sub-node named "regulators" with more sub-nodes for each regulator using the
-common regulator binding documented in:
- - Documentation/devicetree/bindings/regulator/regulator.txt
-
-
-Required properties of the main device node (the parent!):
- - s5m8767,pmic-buck2-dvs-voltage: A set of 8 voltage values in micro-volt (uV)
- units for buck2 when changing voltage using gpio dvs. Refer to [1] below
- for additional information.
-
- - s5m8767,pmic-buck3-dvs-voltage: A set of 8 voltage values in micro-volt (uV)
- units for buck3 when changing voltage using gpio dvs. Refer to [1] below
- for additional information.
-
- - s5m8767,pmic-buck4-dvs-voltage: A set of 8 voltage values in micro-volt (uV)
- units for buck4 when changing voltage using gpio dvs. Refer to [1] below
- for additional information.
-
- - s5m8767,pmic-buck-ds-gpios: GPIO specifiers for three host gpio's used
- for selecting GPIO DVS lines. It is one-to-one mapped to dvs gpio lines.
-
- [1] If none of the 's5m8767,pmic-buck[2/3/4]-uses-gpio-dvs' optional
- property is specified, the 's5m8767,pmic-buck[2/3/4]-dvs-voltage'
- property should specify atleast one voltage level (which would be a
- safe operating voltage).
-
- If either of the 's5m8767,pmic-buck[2/3/4]-uses-gpio-dvs' optional
- property is specified, then all the eight voltage values for the
- 's5m8767,pmic-buck[2/3/4]-dvs-voltage' should be specified.
-
-Optional properties of the main device node (the parent!):
- - s5m8767,pmic-buck2-uses-gpio-dvs: 'buck2' can be controlled by gpio dvs.
- - s5m8767,pmic-buck3-uses-gpio-dvs: 'buck3' can be controlled by gpio dvs.
- - s5m8767,pmic-buck4-uses-gpio-dvs: 'buck4' can be controlled by gpio dvs.
-
-Additional properties required if either of the optional properties are used:
-
- - s5m8767,pmic-buck234-default-dvs-idx: Default voltage setting selected from
- the possible 8 options selectable by the dvs gpios. The value of this
- property should be between 0 and 7. If not specified or if out of range, the
- default value of this property is set to 0.
-
- - s5m8767,pmic-buck-dvs-gpios: GPIO specifiers for three host gpio's used
- for dvs. The format of the gpio specifier depends in the gpio controller.
-
-
-Names of regulators supported by S5M8767 device:
- - LDOn
- - valid values for n are 1 to 28
- - Example: LDO1, LDO2, LDO28
- - BUCKn
- - valid values for n are 1 to 9.
- - Example: BUCK1, BUCK2, BUCK9
-Note: The 'n' in LDOn and BUCKn represents the LDO or BUCK number
-as per the datasheet of device.
-
-
-Optional properties of the nodes under "regulators" sub-node:
- - op_mode: describes the different operating modes of the LDO's with
- power mode change in SOC. The different possible values are,
- 0 - always off mode
- 1 - on in normal mode
- 2 - low power mode
- 3 - suspend mode
- - s5m8767,pmic-ext-control-gpios: (optional) GPIO specifier for one
- GPIO controlling this regulator
- (enable/disable); This is valid only
- for buck9.
-
-Example:
-
- s5m8767_pmic@66 {
- compatible = "samsung,s5m8767-pmic";
- reg = <0x66>;
-
- s5m8767,pmic-buck2-uses-gpio-dvs;
- s5m8767,pmic-buck3-uses-gpio-dvs;
- s5m8767,pmic-buck4-uses-gpio-dvs;
-
- s5m8767,pmic-buck-default-dvs-idx = <0>;
-
- s5m8767,pmic-buck-dvs-gpios = <&gpx0 0 0>, /* DVS1 */
- <&gpx0 1 0>, /* DVS2 */
- <&gpx0 2 0>; /* DVS3 */
-
- s5m8767,pmic-buck-ds-gpios = <&gpx2 3 0>, /* SET1 */
- <&gpx2 4 0>, /* SET2 */
- <&gpx2 5 0>; /* SET3 */
-
- s5m8767,pmic-buck2-dvs-voltage = <1350000>, <1300000>,
- <1250000>, <1200000>,
- <1150000>, <1100000>,
- <1000000>, <950000>;
-
- s5m8767,pmic-buck3-dvs-voltage = <1100000>, <1100000>,
- <1100000>, <1100000>,
- <1000000>, <1000000>,
- <1000000>, <1000000>;
-
- s5m8767,pmic-buck4-dvs-voltage = <1200000>, <1200000>,
- <1200000>, <1200000>,
- <1200000>, <1200000>,
- <1200000>, <1200000>;
-
- regulators {
- ldo1_reg: LDO1 {
- regulator-name = "VDD_ABB_3.3V";
- regulator-min-microvolt = <3300000>;
- regulator-max-microvolt = <3300000>;
- op_mode = <1>; /* Normal Mode */
- };
-
- ldo2_reg: LDO2 {
- regulator-name = "VDD_ALIVE_1.1V";
- regulator-min-microvolt = <1100000>;
- regulator-max-microvolt = <1100000>;
- regulator-always-on;
- };
-
- buck1_reg: BUCK1 {
- regulator-name = "VDD_MIF_1.2V";
- regulator-min-microvolt = <950000>;
- regulator-max-microvolt = <1350000>;
- regulator-always-on;
- regulator-boot-on;
- };
-
- vemmc_reg: BUCK9 {
- regulator-name = "VMEM_VDD_2.8V";
- regulator-min-microvolt = <2800000>;
- regulator-max-microvolt = <2800000>;
- op_mode = <3>; /* Standby Mode */
- s5m8767,pmic-ext-control-gpios = <&gpk0 2 0>;
- };
- };
- };