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mfd: Add documentation for ACT8945A DT bindings 

The Active-semi ACT8945A PMIC is a Multi-Function Device, it has
two subdevices:
 - Regulator
 - Charger

This patch adds documentation for ACT8945A DT bindings.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Wenyou Yang 2016-02-05 11:36:30 +08:00 committed by Lee Jones
parent b25c6b7d28
commit 2cd9ad0c5f
1 changed files with 76 additions and 0 deletions
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Documentation/devicetree/bindings/mfd/act8945a.txt Normal file
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Device-Tree bindings for Active-semi ACT8945A MFD driver
Required properties:
- compatible: "active-semi,act8945a".
- reg: the I2C slave address for the ACT8945A chip
The chip exposes two subdevices:
- a regulators: see ../regulator/act8945a-regulator.txt
- a charger: see ../power/act8945a-charger.txt
Example:
pmic@5b {
compatible = "active-semi,act8945a";
reg = <0x5b>;
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_charger_chglev>;
active-semi,chglev-gpio = <&pioA 12 GPIO_ACTIVE_HIGH>;
active-semi,input-voltage-threshold-microvolt = <6600>;
active-semi,precondition-timeout = <40>;
active-semi,total-timeout = <3>;
active-semi,vsel-high;
regulators {
vdd_1v35_reg: REG_DCDC1 {
regulator-name = "VDD_1V35";
regulator-min-microvolt = <1350000>;
regulator-max-microvolt = <1350000>;
regulator-always-on;
};
vdd_1v2_reg: REG_DCDC2 {
regulator-name = "VDD_1V2";
regulator-min-microvolt = <1100000>;
regulator-max-microvolt = <1300000>;
regulator-always-on;
};
vdd_3v3_reg: REG_DCDC3 {
regulator-name = "VDD_3V3";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
};
vdd_fuse_reg: REG_LDO1 {
regulator-name = "VDD_FUSE";
regulator-min-microvolt = <2500000>;
regulator-max-microvolt = <2500000>;
regulator-always-on;
};
vdd_3v3_lp_reg: REG_LDO2 {
regulator-name = "VDD_3V3_LP";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
};
vdd_led_reg: REG_LDO3 {
regulator-name = "VDD_LED";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
};
vdd_sdhc_1v8_reg: REG_LDO4 {
regulator-name = "VDD_SDHC_1V8";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
regulator-always-on;
};
};
};