linux-kernel - Re: [PATCH v1] dt-bindings: dsp: mediatek: add mt8186 dsp document

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Message-ID: <c0a188e5-8a8c-d4a3-5a3d-9b9dd85d8f44@linaro.org>
Date:   Fri, 22 Apr 2022 17:49:39 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Tinghan Shen <tinghan.shen@...iatek.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Project_Global_Chrome_Upstream_Group@...iatek.com
Subject: Re: [PATCH v1] dt-bindings: dsp: mediatek: add mt8186 dsp document

On 22/04/2022 09:15, Tinghan Shen wrote:
> This patch adds mt8186 dsp document. The dsp is used for Sound Open
> Firmware driver node. It includes registers, clocks, memory regions,
> and mailbox for dsp.
> 
> Signed-off-by: Tinghan Shen <tinghan.shen@...iatek.com>
> ---
> 
> This patch depends on MT8186 clock bindings.
> https://lore.kernel.org/all/20220409132251.31725-2-chun-jie.chen@mediatek.com/
> 
> ---
>  .../bindings/dsp/mediatek,mt8186-dsp.yaml     | 93 +++++++++++++++++++
>  1 file changed, 93 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/dsp/mediatek,mt8186-dsp.yaml
> 
> diff --git a/Documentation/devicetree/bindings/dsp/mediatek,mt8186-dsp.yaml b/Documentation/devicetree/bindings/dsp/mediatek,mt8186-dsp.yaml
> new file mode 100644
> index 000000000000..00a79e880895
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/dsp/mediatek,mt8186-dsp.yaml
> @@ -0,0 +1,93 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/dsp/mediatek,mt8186-dsp.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Mediatek mt8186 DSP core
> +
> +maintainers:
> +  - Tinghan Shen <tinghan.shen@...iatek.com>
> +
> +description: |
> +  MediaTek mt8186 SoC contains a DSP core used for
> +  advanced pre- and post- audio processing.
> +
> +properties:
> +  compatible:
> +    const: mediatek,mt8186-dsp
> +
> +  reg:
> +    items:
> +      - description: Address and size of the DSP config registers
> +      - description: Address and size of the DSP SRAM
> +      - description: Address and size of the DSP secure registers
> +      - description: Address and size of the DSP bus registers
> +
> +  reg-names:
> +    items:
> +      - const: cfg
> +      - const: sram
> +      - const: sec
> +      - const: bus
> +
> +  clocks:
> +    items:
> +      - description: mux for audio dsp clock
> +      - description: mux for audio dsp local bus
> +
> +  clock-names:
> +    items:
> +      - const: audiodsp_sel
> +      - const: adsp_bus_sel

What does the "sel" stands for? Maybe just skip the "_sel" suffixes?

> +
> +  power-domains:
> +    maxItems: 1
> +
> +  mboxes:
> +    items:
> +      - description: ipc reply between host and audio DSP.
> +      - description: ipc request between host and audio DSP.
> +
> +  mbox-names:
> +    items:
> +      - const: mbox0
> +      - const: mbox1

These should be rather some meaningful names, e.g. "rx" and "tx".

> +
> +  memory-region:
> +    items:
> +      - description: dma buffer between host and DSP.
> +      - description: DSP system memory.
> +
> +required:
> +  - compatible
> +  - reg
> +  - reg-names
> +  - clocks
> +  - clock-names
> +  - power-domains
> +  - mbox-names
> +  - mboxes
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    #include <dt-bindings/interrupt-controller/irq.h>

You do not use these headers.

> +    #include <dt-bindings/clock/mt8186-clk.h>
> +    dsp@...80000 {



Best regards,
Krzysztof