linux-kernel - [PATCH 1/2] ASoC: dt-bindings: codecs: Add bindings for ak4375

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Message-Id: <20211213155914.2558902-1-vincent.knecht@mailoo.org>
Date:   Mon, 13 Dec 2021 16:59:11 +0100
From:   Vincent Knecht <vincent.knecht@...loo.org>
To:     lgirdwood@...il.com, broonie@...nel.org, robh+dt@...nel.org,
        perex@...ex.cz, tiwai@...e.com
Cc:     stephan@...hold.net, obayerd@...ocomposant.fr,
        alsa-devel@...a-project.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, phone-devel@...r.kernel.org,
        ~postmarketos/upstreaming@...ts.sr.ht,
        Vincent Knecht <vincent.knecht@...loo.org>
Subject: [PATCH 1/2] ASoC: dt-bindings: codecs: Add bindings for ak4375

AK4375 is an audio DAC with headphones amplifier controlled via I2C.
Add simple device tree bindings that describe how to set it up.

Signed-off-by: Vincent Knecht <vincent.knecht@...loo.org>
---
 .../devicetree/bindings/sound/ak4375.yaml     | 56 +++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/ak4375.yaml

diff --git a/Documentation/devicetree/bindings/sound/ak4375.yaml b/Documentation/devicetree/bindings/sound/ak4375.yaml
new file mode 100644
index 000000000000..295972801872
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/ak4375.yaml
@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/ak4375.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: AK4375 DAC and headphones amplifier Device Tree Bindings
+
+maintainers:
+  - Vincent Knecht <vincent.knecht@...loo.org>
+
+properties:
+  compatible:
+    const: asahi-kasei,ak4375
+
+  reg:
+    maxItems: 1
+
+  '#sound-dai-cells':
+    const: 0
+
+  avdd-supply:
+    description: optional regulator phandle for the AVDD power supply.
+
+  tvdd-supply:
+    description: regulator phandle for the TVDD power supply.
+
+  pdn-gpios:
+    description: optional GPIO to set the PDN pin.
+
+required:
+  - compatible
+  - reg
+  - '#sound-dai-cells'
+  - tvdd-supply
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      headphones: audio-codec@10 {
+        compatible = "asahi-kasei,ak4375";
+        reg = <0x10>;
+        avdd-supply = <&reg_headphones_avdd>;
+        tvdd-supply = <&pm8916_l6>;
+        pdn-gpios = <&msmgpio 114 GPIO_ACTIVE_HIGH>;
+        pinctrl-names = "default";
+        pinctrl-0 = <&headphones_pdn_default>;
+        #sound-dai-cells = <0>;
+      };
+    };
-- 
2.31.1