[PATCH v2 2/2] mfd: add documentation for ACT8945A DT bindings

[Wenyou Yang <wenyou.yang-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>]

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-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>
---

Changes in v2:
 - use more specific label in Example.
 - add pmic and charger nodes in Example.

 Documentation/devicetree/bindings/mfd/act8945a.txt |   82 ++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/act8945a.txt

diff --git a/Documentation/devicetree/bindings/mfd/act8945a.txt b/Documentation/devicetree/bindings/mfd/act8945a.txt
new file mode 100644
index 0000000..e4a8aaf
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/act8945a.txt
@@ -0,0 +1,82 @@
+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:
+	act8945a@5b {
+		compatible = "active-semi,act8945a";
+		reg = <0x5b>;
+		status = "okay";
+
+		pmic {
+			compatible = "active-semi,act8945a-regulator";
+			active-semi,vsel-high;
+
+				regulators {
+					vdd_1v35_reg: DCDC_REG1 {
+						regulator-name = "VDD_1V35";
+						regulator-min-microvolt = <1350000>;
+						regulator-max-microvolt = <1350000>;
+						regulator-always-on;
+					};
+
+					vdd_1v2_reg: DCDC_REG2 {
+						regulator-name = "VDD_1V2";
+						regulator-min-microvolt = <1100000>;
+						regulator-max-microvolt = <1300000>;
+						regulator-always-on;
+					};
+
+					vdd_3v3_reg: DCDC_REG3 {
+						regulator-name = "VDD_3V3";
+						regulator-min-microvolt = <3300000>;
+						regulator-max-microvolt = <3300000>;
+						regulator-always-on;
+					};
+
+					vdd_fuse_reg: LDO_REG1 {
+						regulator-name = "VDD_FUSE";
+						regulator-min-microvolt = <2500000>;
+						regulator-max-microvolt = <2500000>;
+						regulator-always-on;
+					};
+
+					vdd_3v3_lp_reg: LDO_REG2 {
+						regulator-name = "VDD_3V3_LP";
+						regulator-min-microvolt = <3300000>;
+						regulator-max-microvolt = <3300000>;
+						regulator-always-on;
+					};
+
+					vdd_led_reg: LDO_REG3 {
+						regulator-name = "VDD_LED";
+						regulator-min-microvolt = <3300000>;
+						regulator-max-microvolt = <3300000>;
+						regulator-always-on;
+					};
+
+					vdd_sdhc_1v8_reg: LDO_REG4 {
+						regulator-name = "VDD_SDHC_1V8";
+						regulator-min-microvolt = <1800000>;
+						regulator-max-microvolt = <1800000>;
+						regulator-always-on;
+					};
+				};
+			};
+
+		charger {
+			compatible = "active-semi,act8945a-charger";
+			pinctrl-names = "default";
+			pinctrl-0 = <&pinctrl_charger_chglev>;
+			active-semi,chglev-gpio = <&pioA 12 GPIO_ACTIVE_HIGH>;
+			active-semi,input_voltage_threshold = <6600>;
+			active-semi,precondition_timeout = <40>;
+			active-semi,total_timeout = <3>;
+		};
+	};
-- 
1.7.9.5

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