This adds an optional enable-gpios property to pwm-beeper. This gpio is
used to enable the beeper. For example, the beeper may have an amplifier
that needs to be switched on.
Signed-off-by: David Lechner <david@xxxxxxxxxxxxxx>
---
Documentation/devicetree/bindings/input/pwm-beeper.txt | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/Documentation/devicetree/bindings/input/pwm-beeper.txt b/Documentation/devicetree/bindings/input/pwm-beeper.txt
index be332ae..1c6bcf8 100644
--- a/Documentation/devicetree/bindings/input/pwm-beeper.txt
+++ b/Documentation/devicetree/bindings/input/pwm-beeper.txt
@@ -5,3 +5,14 @@ Registers a PWM device as beeper.
Required properties:
- compatible: should be "pwm-beeper"
- pwms: phandle to the physical PWM device
+
+Optional properties:
+- enable-gpios: phandle to gpio to enable the beeper
+
+Example:
+
+beeper {
+ compatible = "pwm-beeper";
+ pwms = <&pwm0>;
+ enable-gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
+};
--
2.7.4
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