ASoC: dt-bindings: Add TDM controller bindings for StarFive JH7110

Add bindings for TDM driver which supports multi-channel audio playback
and capture on JH7110 platform.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Walker Chen <walker.chen@starfivetech.com>
Link: https://lore.kernel.org/r/20230526145402.450-2-walker.chen@starfivetech.com
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 98 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/sound/starfive,jh7110-tdm.yaml b/Documentation/devicetree/bindings/sound/starfive,jh7110-tdm.yaml
new file mode 100644
index 000000000000..abb373fbfa26
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/starfive,jh7110-tdm.yaml
@@ -0,0 +1,98 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/starfive,jh7110-tdm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: StarFive JH7110 TDM Controller
+
+description: |
+  The TDM Controller is a Time Division Multiplexed audio interface
+  integrated in StarFive JH7110 SoC, allowing up to 8 channels of
+  audio over a serial interface. The TDM controller can operate both
+  in master and slave mode.
+
+maintainers:
+  - Walker Chen <walker.chen@starfivetech.com>
+
+allOf:
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    enum:
+      - starfive,jh7110-tdm
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: TDM AHB Clock
+      - description: TDM APB Clock
+      - description: TDM Internal Clock
+      - description: TDM Clock
+      - description: Inner MCLK
+      - description: TDM External Clock
+
+  clock-names:
+    items:
+      - const: tdm_ahb
+      - const: tdm_apb
+      - const: tdm_internal
+      - const: tdm
+      - const: mclk_inner
+      - const: tdm_ext
+
+  resets:
+    items:
+      - description: tdm ahb reset line
+      - description: tdm apb reset line
+      - description: tdm core reset line
+
+  dmas:
+    items:
+      - description: RX DMA Channel
+      - description: TX DMA Channel
+
+  dma-names:
+    items:
+      - const: rx
+      - const: tx
+
+  "#sound-dai-cells":
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - resets
+  - dmas
+  - dma-names
+  - "#sound-dai-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    tdm@10090000 {
+        compatible = "starfive,jh7110-tdm";
+        reg = <0x10090000 0x1000>;
+        clocks = <&syscrg 184>,
+                 <&syscrg 185>,
+                 <&syscrg 186>,
+                 <&syscrg 187>,
+                 <&syscrg 17>,
+                 <&tdm_ext>;
+        clock-names = "tdm_ahb", "tdm_apb",
+                      "tdm_internal", "tdm",
+                      "mclk_inner", "tdm_ext";
+        resets = <&syscrg 105>,
+                 <&syscrg 107>,
+                 <&syscrg 106>;
+        dmas = <&dma 20>, <&dma 21>;
+        dma-names = "rx","tx";
+        #sound-dai-cells = <0>;
+    };