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@xxxxxxxxx>
---
.../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
--
2.45.0
