linux-kernel - [PATCH 1/4] ASoC: dt-bindings: wcd934x: add bindings for Headset Button detection

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Date:   Mon, 10 May 2021 11:11:58 +0100
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     broonie@...nel.org
Cc:     robh@...nel.org, devicetree@...r.kernel.org, perex@...ex.cz,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        lgirdwood@...il.com, lee.jones@...aro.org,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH 1/4] ASoC: dt-bindings: wcd934x: add bindings for Headset Button detection

Add bindings required for Multi Button Headset detection.
WCD934x support Headsets with upto 8 buttons including, impedance measurement
on both L/R Headset speakers and cross connection detection.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
---
 .../bindings/sound/qcom,wcd934x.yaml          | 65 +++++++++++++++++++
 1 file changed, 65 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/qcom,wcd934x.yaml b/Documentation/devicetree/bindings/sound/qcom,wcd934x.yaml
index e8f716b5f875..b25c6ca4e97c 100644
--- a/Documentation/devicetree/bindings/sound/qcom,wcd934x.yaml
+++ b/Documentation/devicetree/bindings/sound/qcom,wcd934x.yaml
@@ -77,6 +77,64 @@ properties:
     minimum: 1800000
     maximum: 2850000
 
+  qcom,hphl-jack-type-normally-closed:
+    description: Indicates that HPHL jack switch type is normally closed
+    type: boolean
+
+  qcom,ground-jack-type-normally-closed:
+    description: Indicates that Headset Ground switch type is normally closed
+    type: boolean
+
+  qcom,mbhc-headset-vthreshold-microvolt:
+    description: Voltage threshold value for headset detection
+    minimum: 0
+    maximum: 2850000
+
+  qcom,mbhc-headphone-vthreshold-microvolt:
+    description: Voltage threshold value for headphone detection
+    minimum: 0
+    maximum: 2850000
+
+  qcom,mbhc-button0-vthreshold-microvolt:
+    description: Voltage threshold value for headset button0
+    minimum: 0
+    maximum: 500000
+
+  qcom,mbhc-button1-vthreshold-microvolt:
+    description: Voltage threshold value for headset button1
+    minimum: 0
+    maximum: 500000
+
+  qcom,mbhc-button2-vthreshold-microvolt:
+    description: Voltage threshold value for headset button2
+    minimum: 0
+    maximum: 500000
+
+  qcom,mbhc-button3-vthreshold-microvolt:
+    description: Voltage threshold value for headset button3
+    minimum: 0
+    maximum: 500000
+
+  qcom,mbhc-button4-vthreshold-microvolt:
+    description: Voltage threshold value for headset button4
+    minimum: 0
+    maximum: 500000
+
+  qcom,mbhc-button5-vthreshold-microvolt:
+    description: Voltage threshold value for headset button5
+    minimum: 0
+    maximum: 500000
+
+  qcom,mbhc-button6-vthreshold-microvolt:
+    description: Voltage threshold value for headset button6
+    minimum: 0
+    maximum: 500000
+
+  qcom,mbhc-button7-vthreshold-microvolt:
+    description: Voltage threshold value headset button7
+    minimum: 0
+    maximum: 500000
+
   clock-output-names:
     const: mclk
 
@@ -159,6 +217,13 @@ examples:
         qcom,micbias2-microvolt = <1800000>;
         qcom,micbias3-microvolt = <1800000>;
         qcom,micbias4-microvolt = <1800000>;
+        qcom,hphl-jack-type-normally-closed;
+        qcom,ground-jack-type-normally-closed;
+        qcom,mbhc-button0-vthreshold-microvolt = <75000>;
+        qcom,mbhc-button1-vthreshold-microvolt = <150000>;
+        qcom,mbhc-button2-vthreshold-microvolt = <237000>;
+        qcom,mbhc-headset-vthreshold-microvolt = <1700000>;
+        qcom,mbhc-headphone-vthreshold-microvolt = <50000>;
         clock-names = "extclk";
         clocks = <&rpmhcc 2>;
 
-- 
2.21.0