linux-kernel - [PATCH v3 1/2] ASoC: google: dt-bindings: modify machine bindings for two MICs case

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Date:   Mon,  2 Nov 2020 14:24:07 +0800
From:   Ajye Huang <ajye.huang@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     Mark Brown <broonie@...nel.org>,
        Rohit kumar <rohitkr@...eaurora.org>,
        Banajit Goswami <bgoswami@...eaurora.org>,
        Patrick Lai <plai@...eaurora.org>,
        Srinivasa Rao Mandadapu <srivasam@...eaurora.org>,
        srinivas.kandagatla@...aro.org, Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>, cychiang@...omium.org,
        tzungbi@...omium.org, dianders@...omium.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        alsa-devel@...a-project.org,
        Ajye Huang <ajye_huang@...pal.corp-partner.google.com>
Subject: [PATCH v3 1/2] ASoC: google: 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>
---
 .../bindings/sound/google,sc7180-trogdor.yaml | 58 +++++++++++++++++++
 1 file changed, 58 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/google,sc7180-trogdor.yaml b/Documentation/devicetree/bindings/sound/google,sc7180-trogdor.yaml
index efc34689d6b5..9e0505467e57 100644
--- a/Documentation/devicetree/bindings/sound/google,sc7180-trogdor.yaml
+++ b/Documentation/devicetree/bindings/sound/google,sc7180-trogdor.yaml
@@ -34,6 +34,9 @@ properties:
   "#size-cells":
     const: 0
 
+  dmic-gpios:
+    description: GPIO for switching between DMICs
+
 patternProperties:
   "^dai-link(@[0-9])?$":
     description:
@@ -81,6 +84,7 @@ additionalProperties: false
 examples:
 
   - |
+    //Example 1
     sound {
         compatible = "google,sc7180-trogdor";
         model = "sc7180-rt5682-max98357a-1mic";
@@ -128,3 +132,57 @@ examples:
             };
         };
     };
+
+  - |
+    //Example 2 (2mic case)
+    sound {
+        compatible = "google,sc7180-trogdor";
+        model = "sc7180-rt5682-max98357a-2mic";
+
+        audio-routing =
+                    "Headphone Jack", "HPOL",
+                    "Headphone Jack", "HPOR";
+
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        dmic-gpios = <&tlmm 86 0>;
+
+        dai-link@0 {
+            link-name = "MultiMedia0";
+            reg = <0>;
+            cpu {
+                sound-dai = <&lpass_cpu 0>;
+            };
+
+            codec {
+                sound-dai = <&alc5682 0>;
+            };
+        };
+
+        dai-link@1 {
+            link-name = "MultiMedia1";
+            reg = <1>;
+            cpu {
+                sound-dai = <&lpass_cpu 1>;
+            };
+
+            codec {
+                sound-dai = <&max98357a>;
+            };
+        };
+
+        dai-link@2 {
+            link-name = "MultiMedia2";
+            reg = <2>;
+            cpu {
+                sound-dai = <&lpass_hdmi 0>;
+            };
+
+            codec {
+                sound-dai = <&msm_dp>;
+            };
+        };
+    };
+
+...
-- 
2.25.1