linux-kernel - Re: [PATCH v2 1/2] dt-bindings: dsp: mediatek: add mt8196 dsp document

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Message-ID: <defd70cb-4351-4b0b-b4d0-dd1ff831615c@kernel.org>
Date: Thu, 3 Jul 2025 10:08:45 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: "hailong.fan" <hailong.fan@...iatek.com>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Matthias Brugger <matthias.bgg@...il.com>,
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
 Liam Girdwood <lgirdwood@...il.com>,
 Peter Ujfalusi <peter.ujfalusi@...ux.intel.com>,
 Bard Liao <yung-chuan.liao@...ux.intel.com>,
 Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>,
 Daniel Baluta <daniel.baluta@....com>,
 Kai Vehmanen <kai.vehmanen@...ux.intel.com>,
 Pierre-Louis Bossart <pierre-louis.bossart@...ux.dev>,
 Mark Brown <broonie@...nel.org>, Jaroslav Kysela <perex@...ex.cz>,
 Takashi Iwai <tiwai@...e.com>
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org,
 sound-open-firmware@...a-project.org, linux-sound@...r.kernel.org,
 Project_Global_Chrome_Upstream_Group@...iatek.com
Subject: Re: [PATCH v2 1/2] dt-bindings: dsp: mediatek: add mt8196 dsp
 document

On 03/07/2025 09:56, hailong.fan wrote:
> From: Hailong Fan <hailong.fan@...iatek.com>
> 
> This patch adds mt8196 dsp document. The dsp is used for Sound Open

Please do not use "This commit/patch/change", but imperative mood. See
longer explanation here:
https://elixir.bootlin.com/linux/v5.17.1/source/Documentation/process/submitting-patches.rst#L95

> Firmware driver node. It includes registers,  clocks, memory regions,
> and mailbox for dsp.
> 
> Signed-off-by: Hailong Fan <hailong.fan@...iatek.com>
> ---
>  .../bindings/sound/mediatek,mt8196-dsp.yaml   | 95 +++++++++++++++++++
>  1 file changed, 95 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/sound/mediatek,mt8196-dsp.yaml
> 
> diff --git a/Documentation/devicetree/bindings/sound/mediatek,mt8196-dsp.yaml b/Documentation/devicetree/bindings/sound/mediatek,mt8196-dsp.yaml
> new file mode 100644
> index 000000000000..68f594f476e8
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/mediatek,mt8196-dsp.yaml
> @@ -0,0 +1,95 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/sound/mediatek,mt8196-dsp.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: MediaTek mt8196 DSP core
> +
> +maintainers:
> +  - Hailong Fan <hailong.fan@...iatek.com>
> +
> +description: The MediaTek mt8196 SoC mt8196 contain a DSP core used for advanced

Missing blank line. Look at other bindings. Also does not look wrapped
at 80 (see Linux coding style doc).


> +  pre- and post- audio processing.
> +
> +properties:
> +  compatible:
> +    const: mediatek,mt8196-dsp
> +
> +  reg:
> +    items:
> +      - description: DSP configuration registers
> +      - description: DSP SRAM
> +      - description: DSP secure registers
> +      - description: DSP bus registers
> +
> +  reg-names:
> +    items:
> +      - const: cfg
> +      - const: sram
> +      - const: sec
> +      - const: bus
> +
> +  clocks:
> +    items:
> +      - description: mux for dsp clock
> +      - description: 26M clock
> +      - description: ADSP PLL clock
> +
> +  clock-names:
> +    items:
> +      - const: adsp_sel

Isn't this called audiodsp in other bindings?

> +      - const: clk26m

Don't use frequencies. How is the pin or input called in datasheet? How
other devices call it?

> +      - const: adsppll
> +
> +  power-domains:
> +    maxItems: 1
> +
Best regards,
Krzysztof