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>

2 files changed, 24 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
@@ -0,0 +1,23 @@
+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>;
+        };
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index ac7269f90764..24b92b31f2b5 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -49,6 +49,7 @@ epson	Seiko Epson Corp.
 est     ESTeem Wireless Modems
 eukrea  Eukréa Electromatique
 excito  Excito
+fcs     Fairchild Semiconductor
 fsl     Freescale Semiconductor
 GEFanuc GE Fanuc Intelligent Platforms Embedded Systems, Inc.
 gef     GE Fanuc Intelligent Platforms Embedded Systems, Inc.