[PATCH 2/8] ASoC: rockchip: rk3308: add audio card bindings

luca.ceresoli
2022-09-07T14:23:25Z

From: Luca Ceresoli <luca.ceresoli@bootlin.com>

Add device tree bindings document for the audio card based on the internal
I2S of the Rockchip RK3308 SoC.

Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
---
.../rockchip,rk3308-audio-graph-card.yaml | 50 +++++++++++++++++++
MAINTAINERS | 5 ++
2 files changed, 55 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/rockchip,rk3308-audio-graph-card.yaml

diff --git a/Documentation/devicetree/bindings/sound/rockchip,rk3308-audio-graph-card.yaml b/Documentation/devicetree/bindings/sound/rockchip,rk3308-audio-graph-card.yaml
new file mode 100644
index 000000000000..8445a69dcdbb
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/rockchip,rk3308-audio-graph-card.yaml
@@ -0,0 +1,50 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/rockchip,rk3308-audio-graph-card.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rockchip RK3308 Audio card based on internal I2S
+
+maintainers:
+ - Luca Ceresoli <luca.ceresoli@bootlin.com>
+
+allOf:
+ - $ref: /schemas/sound/audio-graph.yaml#
+
+properties:
+ compatible:
+ const: rockchip,rk3308-audio-graph-card
+
+required:
+ - compatible
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ sound {
+ compatible = "rockchip,rk3308-audio-graph-card";
+ dais = <&i2s_8ch_2_port>;
+ };
+
+ i2s_8ch_2 {
+ i2s_8ch_2_port: port {
+ i2s_8ch_2_endpoint: endpoint {
+ remote-endpoint = <&acodec_endpoint>;
+ dai-format = "i2s";
+
+ /* The RK3308 acodec has no clock dividers, use the CPU */
+ bitclock-master = <&i2s_8ch_2_endpoint>;
+ frame-master = <&i2s_8ch_2_endpoint>;
+ };
+ };
+ };
+
+ acodec {
+ port {
+ acodec_endpoint: endpoint {
+ remote-endpoint = <&i2s_8ch_2_endpoint>;
+ };
+ };
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index d53a8e74cb1e..079bdd95dc49 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -17594,6 +17594,11 @@ S: Maintained
F: Documentation/devicetree/bindings/sound/rockchip,rk3308-codec.yaml
F: include/dt-bindings/sound/rockchip,rk3308-codec.h

+ROCKCHIP RK3308 SOUND CARD DRIVER
+M: Luca Ceresoli <luca.ceresoli@bootlin.com>
+S: Maintained
+F: Documentation/devicetree/bindings/sound/rockchip,rk3308-audio-graph-card.yaml
+
ROCKCHIP VIDEO DECODER DRIVER
M: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
L: linux-media@vger.kernel.org
--
2.34.1