regulator: add devicetree bindings for Fairchild FAN53555 regulators

Document the regulator and add a fairchild vendor-prefix.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 23 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/regulator/fan53555.txt b/Documentation/devicetree/bindings/regulator/fan53555.txt
new file mode 100644
index 000000000000..b183738d6ca9
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/fan53555.txt
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+Binding for Fairchild FAN53555 regulators
+
+Required properties:
+  - compatible: "fcs,fan53555"
+  - reg: I2C address
+
+Optional properties:
+  - fcs,suspend-voltage-selector: declare which of the two available
+                voltage selector registers should be used for the suspend
+                voltage. The other one is used for the runtime voltage setting
+                Possible values are either <0> or <1>
+  - vin-supply: regulator supplying the vin pin
+
+Example:
+
+        regulator@40 {
+                compatible = "fcs,fan53555";
+                regulator-name = "fan53555";
+                regulator-min-microvolt = <1000000>;
+                regulator-max-microvolt = <1800000>;
+                vin-supply = <&parent_reg>;
+                fcs,suspend-voltage-selector = <1>;
+        };