diff options
| -rw-r--r-- | Documentation/devicetree/bindings/mfd/max77686.txt | 60 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/regulator/max77686.txt | 71 |
2 files changed, 75 insertions, 56 deletions
diff --git a/Documentation/devicetree/bindings/mfd/max77686.txt b/Documentation/devicetree/bindings/mfd/max77686.txt index d2ed3c20a5c3..741e76688cf2 100644 --- a/Documentation/devicetree/bindings/mfd/max77686.txt +++ b/Documentation/devicetree/bindings/mfd/max77686.txt @@ -7,8 +7,9 @@ different i2c slave address,presently for which we are statically creating i2c client while probing.This document describes the binding for mfd device and PMIC submodule. -Binding for the built-in 32k clock generator block is defined separately -in bindings/clk/maxim,max77686.txt file. +Bindings for the built-in 32k clock generator block and +regulators are defined in ../clk/maxim,max77686.txt and +../regulator/max77686.txt respectively. Required properties: - compatible : Must be "maxim,max77686"; @@ -16,36 +17,6 @@ Required properties: - interrupts : This i2c device has an IRQ line connected to the main SoC. - interrupt-parent : The parent interrupt controller. -Optional node: -- voltage-regulators : The regulators of max77686 have to be instantiated - under subnode named "voltage-regulators" using the following format. - - regulator_name { - regulator-compatible = LDOn/BUCKn - standard regulator constraints.... - }; - refer Documentation/devicetree/bindings/regulator/regulator.txt - - The regulator node's name should be initialized with a string -to get matched with their hardware counterparts as follow: - - -LDOn : for LDOs, where n can lie in range 1 to 26. - example: LDO1, LDO2, LDO26. - -BUCKn : for BUCKs, where n can lie in range 1 to 9. - example: BUCK1, BUCK5, BUCK9. - - Regulators which can be turned off during system suspend: - -LDOn : 2, 6-8, 10-12, 14-16, - -BUCKn : 1-4. - Use standard regulator bindings for it ('regulator-off-in-suspend'). - - LDO20, LDO21, LDO22, BUCK8 and BUCK9 can be configured to GPIO enable - control. To turn this feature on this property must be added to the regulator - sub-node: - - maxim,ena-gpios : one GPIO specifier enable control (the gpio - flags are actually ignored and always - ACTIVE_HIGH is used) - Example: max77686: pmic@09 { @@ -53,27 +24,4 @@ Example: interrupt-parent = <&wakeup_eint>; interrupts = <26 0>; reg = <0x09>; - - voltage-regulators { - ldo11_reg: LDO11 { - regulator-name = "vdd_ldo11"; - regulator-min-microvolt = <1900000>; - regulator-max-microvolt = <1900000>; - regulator-always-on; - }; - - buck1_reg: BUCK1 { - regulator-name = "vdd_mif"; - regulator-min-microvolt = <950000>; - regulator-max-microvolt = <1300000>; - regulator-always-on; - regulator-boot-on; - }; - - buck9_reg: BUCK9 { - regulator-name = "CAM_ISP_CORE_1.2V"; - regulator-min-microvolt = <1000000>; - regulator-max-microvolt = <1200000>; - maxim,ena-gpios = <&gpm0 3 GPIO_ACTIVE_HIGH>; - }; - } + }; diff --git a/Documentation/devicetree/bindings/regulator/max77686.txt b/Documentation/devicetree/bindings/regulator/max77686.txt new file mode 100644 index 000000000000..0dded64d89d3 --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/max77686.txt @@ -0,0 +1,71 @@ +Binding for Maxim MAX77686 regulators + +This is a part of the device tree bindings of MAX77686 multi-function device. +More information can be found in ../mfd/max77686.txt file. + +The MAX77686 PMIC has 9 high-efficiency Buck and 26 Low-DropOut (LDO) +regulators that can be controlled over I2C. + +Following properties should be present in main device node of the MFD chip. + +Optional node: +- voltage-regulators : The regulators of max77686 have to be instantiated + under subnode named "voltage-regulators" using the following format. + + regulator_name { + regulator-compatible = LDOn/BUCKn + standard regulator constraints.... + }; + refer Documentation/devicetree/bindings/regulator/regulator.txt + + The regulator node's name should be initialized with a string +to get matched with their hardware counterparts as follow: + + -LDOn : for LDOs, where n can lie in range 1 to 26. + example: LDO1, LDO2, LDO26. + -BUCKn : for BUCKs, where n can lie in range 1 to 9. + example: BUCK1, BUCK5, BUCK9. + + Regulators which can be turned off during system suspend: + -LDOn : 2, 6-8, 10-12, 14-16, + -BUCKn : 1-4. + Use standard regulator bindings for it ('regulator-off-in-suspend'). + + LDO20, LDO21, LDO22, BUCK8 and BUCK9 can be configured to GPIO enable + control. To turn this feature on this property must be added to the regulator + sub-node: + - maxim,ena-gpios : one GPIO specifier enable control (the gpio + flags are actually ignored and always + ACTIVE_HIGH is used) + +Example: + + max77686: pmic@09 { + compatible = "maxim,max77686"; + interrupt-parent = <&wakeup_eint>; + interrupts = <26 IRQ_TYPE_NONE>; + reg = <0x09>; + + voltage-regulators { + ldo11_reg: LDO11 { + regulator-name = "vdd_ldo11"; + regulator-min-microvolt = <1900000>; + regulator-max-microvolt = <1900000>; + regulator-always-on; + }; + + buck1_reg: BUCK1 { + regulator-name = "vdd_mif"; + regulator-min-microvolt = <950000>; + regulator-max-microvolt = <1300000>; + regulator-always-on; + regulator-boot-on; + }; + + buck9_reg: BUCK9 { + regulator-name = "CAM_ISP_CORE_1.2V"; + regulator-min-microvolt = <1000000>; + regulator-max-microvolt = <1200000>; + maxim,ena-gpios = <&gpm0 3 GPIO_ACTIVE_HIGH>; + }; + }; |