Some Samsung devices that share the midas-audio driver use a GPIO-based approach to headset jack detection, as opposed to using the built-in jack detection provided by the wm8994 driver.
Add DT configuration values that allow for describing these setups.
Signed-off-by: Artur Weber aweber.kernel@gmail.com --- .../bindings/sound/samsung,midas-audio.yaml | 30 ++++++++++++++++++++++ 1 file changed, 30 insertions(+)
diff --git a/Documentation/devicetree/bindings/sound/samsung,midas-audio.yaml b/Documentation/devicetree/bindings/sound/samsung,midas-audio.yaml index 6ec80f529d84..9f521131f2b3 100644 --- a/Documentation/devicetree/bindings/sound/samsung,midas-audio.yaml +++ b/Documentation/devicetree/bindings/sound/samsung,midas-audio.yaml @@ -61,6 +61,36 @@ properties: maxItems: 1 description: GPIO pin for line out selection
+ headset-detect-gpios: + maxItems: 1 + description: GPIO for detection of headset insertion + + headset-key-gpios: + maxItems: 1 + description: GPIO for detection of headset key press + + io-channels: + maxItems: 1 + description: IO channel to read micbias voltage for headset detection + + io-channel-names: + const: headset-detect + + headset-4pole-threshold-microvolt: + minItems: 2 + maxItems: 2 + description: | + Array containing minimum and maximum IO channel value for 4-pole + (with microphone/button) headsets. If the IO channel value is + outside of this range, a 3-pole headset is assumed. + + headset-button-threshold-microvolt: + minItems: 3 + maxItems: 3 + description: | + Array of minimum (inclusive) IO channel values for headset button + detection, in order: "Media", "Volume Up" and "Volume Down". + required: - compatible - cpu