linux-kernel - [PATCH v5 1/2] ASoC: mediatek: dt-bindings: modify machine bindings for two MICs case

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Date:   Mon, 31 Oct 2022 20:22:23 +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>,
        linux-mediatek@...ts.infradead.org,
        "chunxu . li" <chunxu.li@...iatek.com>,
        Takashi Iwai <tiwai@...e.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Jiaxin Yu <jiaxin.yu@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Ajye Huang <ajye_huang@...pal.corp-partner.google.com>,
        Nícolas F . R . A . Prado 
        <nfraprado@...labora.com>, linux-arm-kernel@...ts.infradead.org,
        devicetree@...r.kernel.org, alsa-devel@...a-project.org
Subject: [PATCH v5 1/2] ASoC: mediatek: dt-bindings: modify machine bindings for two MICs case

Add a property "dmic-gpios" for switching between two MICs.

Signed-off-by: Ajye Huang <ajye_huang@...pal.corp-partner.google.com>
---
 .../sound/mt8186-mt6366-rt1019-rt5682s.yaml        | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/sound/mt8186-mt6366-rt1019-rt5682s.yaml b/Documentation/devicetree/bindings/sound/mt8186-mt6366-rt1019-rt5682s.yaml
index 4fc5b045d3cf..9d3139990237 100644
--- a/Documentation/devicetree/bindings/sound/mt8186-mt6366-rt1019-rt5682s.yaml
+++ b/Documentation/devicetree/bindings/sound/mt8186-mt6366-rt1019-rt5682s.yaml
@@ -21,6 +21,13 @@ properties:
     $ref: "/schemas/types.yaml#/definitions/phandle"
     description: The phandle of MT8186 ASoC platform.
 
+  dmic-gpios:
+    maxItems: 1
+    description:
+      dmic-gpios optional prop for switching between two DMICs.
+      Ex, the GPIO can control a MUX HW component to select
+      dmic clk and data form a Front or Rear dmic.
+
   headset-codec:
     type: object
     additionalProperties: false
@@ -63,14 +70,19 @@ required:
 
 examples:
   - |
+    #include <dt-bindings/gpio/gpio.h>
 
     sound: mt8186-sound {
         compatible = "mediatek,mt8186-mt6366-rt1019-rt5682s-sound";
         mediatek,platform = <&afe>;
         pinctrl-names = "aud_clk_mosi_off",
-                        "aud_clk_mosi_on";
+                        "aud_clk_mosi_on",
+                        "aud_gpio_dmic_sec";
         pinctrl-0 = <&aud_clk_mosi_off>;
         pinctrl-1 = <&aud_clk_mosi_on>;
+        pinctrl-2 = <&aud_gpio_dmic_sec>;
+
+        dmic-gpios = <&pio 23 GPIO_ACTIVE_HIGH>;
 
         headset-codec {
             sound-dai = <&rt5682s>;
-- 
2.25.1