linux-kernel - Re: [PATCH 1/8] dt-bindings: sound: sophgo: add CV1800B I2S/TDM controller binding

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Message-ID: <20260121163213.GA3413426-robh@kernel.org>
Date: Wed, 21 Jan 2026 10:32:13 -0600
From: Rob Herring <robh@...nel.org>
To: "Anton D. Stavinskii" <stavinsky@...il.com>
Cc: Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Chen Wang <unicorn_wang@...look.com>,
	Inochi Amaoto <inochiama@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
	Paul Walmsley <pjw@...nel.org>, Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>, Alexandre Ghiti <alex@...ti.fr>,
	linux-sound@...r.kernel.org, devicetree@...r.kernel.org,
	sophgo@...ts.linux.dev, linux-kernel@...r.kernel.org,
	linux-riscv@...ts.infradead.org
Subject: Re: [PATCH 1/8] dt-bindings: sound: sophgo: add CV1800B I2S/TDM
 controller binding

On Thu, Jan 15, 2026 at 11:17:38PM +0400, Anton D. Stavinskii wrote:
> Purpose: introduce DT schema for the CPU driver

Please write a better commit msg. Use complete sentences for starters.

> 
> Signed-off-by: Anton D. Stavinskii <stavinsky@...il.com>
> ---
>  .../bindings/sound/sophgo,cv1800b-i2s.yaml         | 75 ++++++++++++++++++++++
>  1 file changed, 75 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/sound/sophgo,cv1800b-i2s.yaml b/Documentation/devicetree/bindings/sound/sophgo,cv1800b-i2s.yaml
> new file mode 100644
> index 000000000000..cf30880a62da
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/sophgo,cv1800b-i2s.yaml
> @@ -0,0 +1,75 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/sound/sophgo,cv1800b-i2s.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Sophgo CV1800B I2S/TDM controller
> +
> +maintainers:
> +  - Anton D. Stavinskii <stavinsky@...il.com>
> +
> +description: |

Don't need '|' if no formatting.

> +  I2S/TDM controller found in CV1800B / Sophgo SG2002/SG2000 SoCs.
> +
> +properties:
> +  compatible:
> +    const: sophgo,cv1800b-i2s
> +
> +  reg:
> +    maxItems: 1
> +
> +  "#sound-dai-cells":
> +    const: 0
> +
> +  clocks:
> +    minItems: 1
> +    maxItems: 2
> +
> +  clock-names:
> +    items:
> +      - const: i2s
> +      - const: mclk
> +
> +  dmas:
> +    maxItems: 2

dma-names allows 1 entry, but this requires 2?

> +
> +  dma-names:
> +    description: |
> +      Names of DMA channels. May be omitted. If present, one entry
> +      selects a single direction, while two entries select RX and TX.

Drop the first 2 sentences.

> +    minItems: 1
> +    maxItems: 2
> +    items:
> +      enum: [rx, tx]
> +

> +  "#address-cells":
> +    const: 1
> +
> +  "#size-cells":
> +    const: 0

What are these for? You don't have any child nodes with addresses.

> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - clock-names
> +  - "#sound-dai-cells"
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/sophgo,cv1800.h>
> +
> +    i2s1: i2s@...0000 {

Drop unused label.

> +        compatible = "sophgo,cv1800b-i2s";
> +        reg = <0x04110000 0x10000>;
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +        clocks = <&clk CLK_APB_I2S1>,  <&clk CLK_SDMA_AUD1>;
> +        clock-names = "i2s", "mclk";
> +        dmas = <&dmamux 2 1>, <&dmamux 3 1>;
> +        dma-names = "rx", "tx";
> +    };
> +...
> 
> -- 
> 2.43.0
>