[PATCH v2 1/3] ASoC: dt-bindings: Add StarFive JH7110 PWM-DAC controller

Hal Feng
2023-07-31T03:29:22Z

Add bindings for the PWM-DAC controller on the JH7110
RISC-V SoC by StarFive Ltd.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Hal Feng <hal.feng@starfivetech.com>
---
.../sound/starfive,jh7110-pwmdac.yaml | 76 +++++++++++++++++++
1 file changed, 76 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/starfive,jh7110-pwmdac.yaml

diff --git a/Documentation/devicetree/bindings/sound/starfive,jh7110-pwmdac.yaml b/Documentation/devicetree/bindings/sound/starfive,jh7110-pwmdac.yaml
new file mode 100644
index 000000000000..e2b4db6aa2fb
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/starfive,jh7110-pwmdac.yaml
@@ -0,0 +1,76 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/starfive,jh7110-pwmdac.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: StarFive JH7110 PWM-DAC Controller
+
+description:
+ The PWM-DAC Controller uses PWM square wave generators plus RC filters to
+ form a DAC for audio play in StarFive JH7110 SoC. This audio play controller
+ supports 16 bit audio format, up to 48K sampling frequency, up to left and
+ right dual channels.
+
+maintainers:
+ - Hal Feng <hal.feng@starfivetech.com>
+
+allOf:
+ - $ref: dai-common.yaml#
+
+properties:
+ compatible:
+ const: starfive,jh7110-pwmdac
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ items:
+ - description: PWMDAC APB
+ - description: PWMDAC CORE
+
+ clock-names:
+ items:
+ - const: apb
+ - const: core
+
+ resets:
+ maxItems: 1
+ description: PWMDAC APB
+
+ dmas:
+ maxItems: 1
+ description: TX DMA Channel
+
+ dma-names:
+ const: tx
+
+ "#sound-dai-cells":
+ const: 0
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+ - resets
+ - dmas
+ - dma-names
+ - "#sound-dai-cells"
+
+additionalProperties: false
+
+examples:
+ - |
+ pwmdac@100b0000 {
+ compatible = "starfive,jh7110-pwmdac";
+ reg = <0x100b0000 0x1000>;
+ clocks = <&syscrg 157>,
+ <&syscrg 158>;
+ clock-names = "apb", "core";
+ resets = <&syscrg 96>;
+ dmas = <&dma 22>;
+ dma-names = "tx";
+ #sound-dai-cells = <0>;
+ };