From 5bd5699c494f42a3c23e377bb35be5d716b85012 Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime@cerno.tech>
Date: Wed, 1 Sep 2021 11:18:01 +0200
Subject: [PATCH] ASoC: dt-bindings: Add WM8978 Binding
Even though we had the wm8978 driver for some time and a number of
boards using it already, we never had a binding for it. Let's add it
based on what the driver expects and the boards are providing.
Cc: alsa-devel@alsa-project.org
Cc: devicetree@vger.kernel.org
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: patches@opensource.cirrus.com
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20210901091852.479202-2-maxime@cerno.tech
Signed-off-by: Mark Brown <broonie@kernel.org>
---
.../devicetree/bindings/sound/wlf,wm8978.yaml | 58 +++++++++++++++++++
1 file changed, 58 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/wlf,wm8978.yaml
diff --git a/Documentation/devicetree/bindings/sound/wlf,wm8978.yaml b/Documentation/devicetree/bindings/sound/wlf,wm8978.yaml
new file mode 100644
index 0000000000000..944e5859c962e
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/wlf,wm8978.yaml
@@ -0,0 +1,58 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/wlf,wm8978.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Wolfson WM8978 Codec Device Tree Bindings
+
+maintainers:
+ - patches@opensource.cirrus.com
+
+properties:
+ '#sound-dai-cells':
+ const: 0
+
+ compatible:
+ const: wlf,wm8978
+
+ reg:
+ maxItems: 1
+
+ spi-max-frequency:
+ maximum: 526000
+
+required:
+ - '#sound-dai-cells'
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ codec@0 {
+ #sound-dai-cells = <0>;
+ compatible = "wlf,wm8978";
+ reg = <0>;
+ spi-max-frequency = <500000>;
+ };
+ };
+
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ codec@0 {
+ #sound-dai-cells = <0>;
+ compatible = "wlf,wm8978";
+ reg = <0>;
+ };
+ };
+
+...
--
2.30.2