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From:   Walker Chen <walker.chen@starfivetech.com>
To:     Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>,
        "Rob Herring" <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor.dooley@microchip.com>,
        Emil Renner Berthing <emil.renner.berthing@canonical.com>,
        Walker Chen <walker.chen@starfivetech.com>
CC:     <alsa-devel@alsa-project.org>, <devicetree@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>, <linux-riscv@lists.infradead.org>
Subject: [PATCH v1 1/3] dt-bindings: sound: Add TDM for StarFive JH7110
Date:   Wed, 29 Mar 2023 23:33:18 +0800
Message-ID: <20230329153320.31390-2-walker.chen@starfivetech.com>
In-Reply-To: <20230329153320.31390-1-walker.chen@starfivetech.com>
References: <20230329153320.31390-1-walker.chen@starfivetech.com>
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Add bindings to describe the TDM driver for the StarFive JH7110 SoC.

Signed-off-by: Walker Chen <walker.chen@starfivetech.com>
---
 .../bindings/sound/starfive,jh7110-tdm.yaml   | 95 +++++++++++++++++++
 1 file changed, 95 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/starfive,jh7110-tdm.yaml

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..d65b9ed781ef
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/starfive,jh7110-tdm.yaml
@@ -0,0 +1,95 @@
+# 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>
+
+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: 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>;
+    };
-- 
2.17.1