[PATCH v3 2/5] doc: bindings: Document for hi655x regulator driver

[Chen Feng]

Add Document for hi655x pmic regulator driver

Signed-off-by: Chen Feng <puck.chen@xxxxxxxxxxxxx>
Signed-off-by: Fei Wang <w.f@xxxxxxxxxx>
Tested-by: Xinwei Kong <kong.kongxinwei@xxxxxxxxxxxxx>
---
 .../regulator/hisilicon,hi655x-regulator.txt       | 43 ++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/hisilicon,hi655x-regulator.txt

diff --git a/Documentation/devicetree/bindings/regulator/hisilicon,hi655x-regulator.txt b/Documentation/devicetree/bindings/regulator/hisilicon,hi655x-regulator.txt
new file mode 100644
index 0000000..2eaebae
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/hisilicon,hi655x-regulator.txt
@@ -0,0 +1,43 @@
+Hisilicon Hi655x Voltage regulators
+
+Note:
+The hi655x regulator control is managed by hi655x Power IC.
+So the node of this regulator must be child node of hi655x
+pmic node.
+
+The driver uses the regulator core framework, so please also
+take the bindings of regulator.txt for reference.
+
+Required properties:
+- compatible: Must be "hisilicon,hi655x-regulator-pmic";
+- regulator-ctrl-regs: Registers offset of control register,
+  In turn with enable disable and status register offset.
+- regulator-ctrl-mask: The control mask bit of the register.
+- regulator-vset-regs: Voltage set register offset.
+- regulator-vset-mask: voltage set control mask.
+- regulator-n-vol: The num of support voltages.
+- regulator-vset-table: The table of support voltages.
+
+Example:
+        pmic: pmic@f8000000 {
+                compatible = "hisilicon,hi655x-pmic";
+		...
+		ldo7: regulator@a26 {
+			compatible = "hisilicon,hi655x-regulator-pmic";
+			regulator-name = "ldo7";
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <3300000>;
+			regulator-valid-modes-mask = <0x0a>;
+			regulator-enable-ramp-delay = <120>;
+			regulator-ctrl-regs = <0x029 0x02a 0x02b>;
+			regulator-ctrl-mask = <0x6>;
+			regulator-vset-regs = <0x078>;
+			regulator-vset-mask = <0x7>;
+			regulator-n-vol = <8>;
+			regulator-vset-table  = <1800000>,<1850000>,
+						<2850000>,<2900000>,
+						<3000000>,<3100000>,
+						<3200000>,<3300000>;
+		};
+		...
+	}
-- 
1.9.1

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