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From: Alexandre Mergnat <amergnat@baylibre.com>
Date: Mon, 26 Feb 2024 15:01:40 +0100
Subject: [PATCH 02/18] ASoC: dt-bindings: mediatek,mt8365-mt6357: Add audio
 sound card document
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Message-Id: <20240226-audio-i350-v1-2-4fa1cea1667f@baylibre.com>
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To: Liam Girdwood <lgirdwood@gmail.com>, Mark Brown <broonie@kernel.org>, 
 Rob Herring <robh+dt@kernel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, 
 Conor Dooley <conor+dt@kernel.org>, 
 Matthias Brugger <matthias.bgg@gmail.com>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>, 
 Lee Jones <lee@kernel.org>, Flora Fu <flora.fu@mediatek.com>, 
 Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>, 
 Sumit Semwal <sumit.semwal@linaro.org>, 
 =?utf-8?q?Christian_K=C3=B6nig?= <christian.koenig@amd.com>, 
 Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>
Cc: linux-sound@vger.kernel.org, devicetree@vger.kernel.org, 
 linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, 
 linux-mediatek@lists.infradead.org, linux-media@vger.kernel.org, 
 dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, 
 Alexandre Mergnat <amergnat@baylibre.com>

Add soundcard bindings for the MT8365 SoC with the MT6357 audio codec.

Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
 .../bindings/sound/mediatek,mt8365-mt6357.yaml     | 127 +++++++++++++++++++++
 1 file changed, 127 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/mediatek,mt8365-mt6357.yaml b/Documentation/devicetree/bindings/sound/mediatek,mt8365-mt6357.yaml
new file mode 100644
index 000000000000..f469611ec6b6
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/mediatek,mt8365-mt6357.yaml
@@ -0,0 +1,127 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/mediatek,mt8365-mt6357.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mediatek MT8365 sound card with MT6357 sound codec.
+
+maintainers:
+  - Alexandre Mergnat <amergnat@baylibre.com>
+
+description:
+  This binding describes the MT8365 sound card.
+
+properties:
+  compatible:
+    const: mediatek,mt8365-mt6357
+
+  mediatek,hp-pull-down:
+    description:
+      Earphone driver positive output stage short to the
+      audio reference ground.
+      Default value is false.
+    type: boolean
+
+  mediatek,micbias0-microvolt:
+    description: |
+      Selects MIC Bias 0 output voltage.
+      [1.7v, 1.8v, 1.9v, 2.0v, 2.1v, 2.5v, 2.6v, 2.7v]
+    enum: [0, 1, 2, 3, 4, 5, 6, 7]
+
+  mediatek,micbias1-microvolt:
+    description: |
+      Selects MIC Bias 1 output voltage.
+      [1.7v, 1.8v, 1.9v, 2.0v, 2.1v, 2.5v, 2.6v, 2.7v]
+    enum: [0, 1, 2, 3, 4, 5, 6, 7]
+
+  mediatek,platform:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: The phandle of MT8365 ASoC platform.
+
+  pinctrl-names:
+    minItems: 1
+    items:
+      - const: aud_default
+      - const: aud_dmic
+      - const: aud_miso_off
+      - const: aud_miso_on
+      - const: aud_mosi_off
+      - const: aud_mosi_on
+
+  vaud28-supply:
+    description:
+      2.8 volt supply for the audio codec
+
+patternProperties:
+  "^dai-link-[0-9]+$":
+    type: object
+    description:
+      Container for dai-link level properties and CODEC sub-nodes.
+
+    properties:
+      codec:
+        type: object
+        description: Holds subnode which indicates codec dai.
+
+        properties:
+          sound-dai:
+            maxItems: 1
+            description: phandle of the codec DAI
+
+        additionalProperties: false
+
+      link-name:
+        description:
+          This property corresponds to the name of the BE dai-link to which
+          we are going to update parameters in this node.
+        items:
+          const: 2ND I2S BE
+
+      sound-dai:
+        maxItems: 1
+        description: phandle of the CPU DAI
+
+    additionalProperties: false
+
+    required:
+      - link-name
+      - sound-dai
+
+additionalProperties: false
+
+required:
+  - compatible
+  - mediatek,platform
+  - pinctrl-names
+  - vaud28-supply
+
+examples:
+  - |
+    sound {
+        compatible = "mediatek,mt8365-mt6357";
+        mediatek,platform = <&afe>;
+        pinctrl-names = "aud_default",
+            "aud_dmic",
+            "aud_miso_off",
+            "aud_miso_on",
+            "aud_mosi_off",
+            "aud_mosi_on";
+        pinctrl-0 = <&aud_default_pins>;
+        pinctrl-1 = <&aud_dmic_pins>;
+        pinctrl-2 = <&aud_miso_off_pins>;
+        pinctrl-3 = <&aud_miso_on_pins>;
+        pinctrl-4 = <&aud_mosi_off_pins>;
+        pinctrl-5 = <&aud_mosi_on_pins>;
+        vaud28-supply = <&mt6357_vaud28_reg>;
+
+        /* hdmi interface */
+        dai-link-0 {
+            sound-dai = <&afe>;
+            link-name = "2ND I2S BE";
+
+            codec {
+                sound-dai = <&it66121hdmitx>;
+            };
+        };
+    };

-- 
2.25.1