[PATCH] dt-bindings: input: pwm-beeper: add volume
flat view
STALE1354d
From: Manuel Traut <hidden>
Date: 2023-02-01 17:10:57
Also in:
linux-devicetree, lkml
Subsystem:
input (keyboard, mouse, joystick, touchscreen) drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Dmitry Torokhov, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Add an array of supported volume levels and a default volume level. Signed-off-by: Manuel Traut <redacted> --- .../devicetree/bindings/input/pwm-beeper.yaml | 14 ++++++++++++++ 1 file changed, 14 insertions(+)
diff --git a/Documentation/devicetree/bindings/input/pwm-beeper.yaml b/Documentation/devicetree/bindings/input/pwm-beeper.yaml
index 1ebc3a46d934..7ea2954cdd6a 100644
--- a/Documentation/devicetree/bindings/input/pwm-beeper.yaml
+++ b/Documentation/devicetree/bindings/input/pwm-beeper.yaml@@ -25,6 +25,18 @@ properties: beeper-hz: description: bell frequency in Hz + volume-levels-bp: + description: > + Please note that the actual volume of most beepers is + highly non-linear, which means that low volume levels + are probably somewhere in the range of 10 to 300 (0.1-3% + duty cycle). + maximum: 5000 + + default-volume-level-bp: + description: > + The default volume level. + required: - compatible - pwms
@@ -36,4 +48,6 @@ examples: beeper { compatible = "pwm-beeper"; pwms = <&pwm0>; + volume-levels-bp = <0 80 200 400 5000>; + default-volume-level-bp = <80>; };
--
2.39.1