linux-kernel - [PATCH v1 1/2] ASoC: dt-bindings: Document dmic_sel-gpios optional prop for two DMICs case

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Date:   Fri, 28 Oct 2022 18:24:49 +0800
From:   Ajye Huang <ajye_huang@...pal.corp-partner.google.com>
To:     linux-kernel@...r.kernel.org
Cc:     Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>, robh@...nel.org,
        Shengjiu Wang <shengjiu.wang@....com>,
        Charles Keepax <ckeepax@...nsource.cirrus.com>,
        Takashi Iwai <tiwai@...e.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Arnaud Pouliquen <arnaud.pouliquen@...s.st.com>,
        Ajye Huang <ajye_huang@...pal.corp-partner.google.com>,
        angelogioacchino.delregno@...labora.corp-partner.google.com,
        devicetree@...r.kernel.org, alsa-devel@...a-project.org
Subject: [PATCH v1 1/2] ASoC: dt-bindings: Document dmic_sel-gpios optional prop for two DMICs case

Document dmic_sel-gpios optional prop for switching between two DMICs.
Ex, the GPIO can control a MUX to select Front or Rear dmic.

Signed-off-by: Ajye Huang <ajye_huang@...pal.corp-partner.google.com>
---
 Documentation/devicetree/bindings/sound/dmic-codec.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/dmic-codec.yaml b/Documentation/devicetree/bindings/sound/dmic-codec.yaml
index bba27c985996..4013af65f3e7 100644
--- a/Documentation/devicetree/bindings/sound/dmic-codec.yaml
+++ b/Documentation/devicetree/bindings/sound/dmic-codec.yaml
@@ -36,6 +36,10 @@ properties:
   wakeup-delay-ms:
     description: Delay (in ms) after enabling the DMIC
 
+  dmic_sel-gpios:
+    maxItems: 1
+    description: GPIO for switching between DMICs, ex Front/Rear dmic
+
 required:
   - compatible
 
@@ -48,6 +52,7 @@ examples:
     dmic {
         compatible = "dmic-codec";
         dmicen-gpios = <&gpio4 3 GPIO_ACTIVE_HIGH>;
+        dmic_sel-gpios = <&pio 23 GPIO_ACTIVE_HIGH>;
         num-channels = <1>;
         wakeup-delay-ms = <50>;
         modeswitch-delay-ms = <35>;
-- 
2.25.1