Author: Lee Jones <[email protected]>
Date: Mon Oct 15 13:12:08 2012 +0100
Documentation: Describe Device Tree bindings for GPIO Regulator driver
Here we specify all non-standard bindings which can be used when
requesting the use of an GPIO controlled regulator from Device Tree.
Mark Brown <[email protected]>
Signed-off-by: Lee Jones <[email protected]>
diff --git a/Documentation/devicetree/bindings/regulator/gpio-regulator.txt
b/Documentation/devicetree/bindings/regulator/gpio-regulator.txt
new file mode 100644
index 0000000..a7cdb6e
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/gpio-regulator.txt
@@ -0,0 +1,36 @@
+GPIO controlled regulators
+
+Required properties:
+- compatible : Must be "regulator-gpio".
+
+Optional properties:
+- gpio-enable : GPIO to use to enable/disable the regulator.
+- gpios : GPIO group used to control voltage.
+- states : Selection of available voltages and GPIO configs.
+- startup-delay-us : Startup time in microseconds.
+- enable-active-high : Polarity of GPIO is active high (default is low).
+
+Any property defined as part of the core regulator binding defined in
+regulator.txt can also be used.
+
+Example:
+
+ mmciv: gpio-regulator {
+ compatible = "regulator-gpio";
+
+ regulator-name = "mmci-gpio-supply";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <2600000>;
+
+ gpio-enable = <&gpio0 23 0x4
+ gpios = <&gpio0 24 0x4
+ &gpio0 25 0x4>;
+ states = <1800000 0x3
+ 2200000 0x2
+ 2600000 0x1
+ 2900000 0x0>;
+
+ startup-delay-us = <100000>;
+ enable-active-high;
+ regulator-boot-on;
+ };
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
