regulator: mt6311: Add document for mt6311 regulator

This patch adds a list of supported regulator names to the devicetree
binding documentation for Mediatek MT6311 PMIC.

Signed-off-by: Henry Chen <henryc.chen@mediatek.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/Documentation/devicetree/bindings/regulator/mt6311-regulator.txt b/Documentation/devicetree/bindings/regulator/mt6311-regulator.txt
new file mode 100644 (file)
index 0000000..02649d8
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/mt6311-regulator.txt
@@ -0,0 +1,35 @@
+Mediatek MT6311 Regulator Driver
+
+Required properties:
+- compatible: "mediatek,mt6311-regulator"
+- reg: I2C slave address, usually 0x6b.
+- regulators: List of regulators provided by this controller. It is named
+  to VDVFS and VBIASN.
+  The definition for each of these nodes is defined using the standard binding
+  for regulators at Documentation/devicetree/bindings/regulator/regulator.txt.
+
+The valid names for regulators are:
+BUCK:
+  VDVFS
+LDO:
+  VBIASN
+
+Example:
+       mt6311: pmic@6b {
+               compatible = "mediatek,mt6311-regulator";
+               reg = <0x6b>;
+
+               regulators {
+                       mt6311_vcpu_reg: VDVFS {
+                               regulator-name = "VDVFS";
+                               regulator-min-microvolt = < 600000>;
+                               regulator-max-microvolt = <1400000>;
+                               regulator-ramp-delay = <10000>;
+                       };
+                       mt6311_ldo_reg: VBIASN {
+                               regulator-name = "VBIASN";
+                               regulator-min-microvolt = <200000>;
+                               regulator-max-microvolt = <800000>;
+                       };
+               };
+       };