linux-kernel - Re: [PATCH v3 01/11] dt-bindings: remoteproc: mediatek: Give the subnode a persistent name

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Message-ID: <b748aebe-09b5-d4b2-a6e4-0f13e440bc05@linaro.org>
Date:   Wed, 28 Sep 2022 19:47:19 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Tinghan Shen <tinghan.shen@...iatek.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Tiffany Lin <tiffany.lin@...iatek.com>,
        Andrew-CT Chen <andrew-ct.chen@...iatek.com>,
        Yunfei Dong <yunfei.dong@...iatek.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>
Cc:     linux-remoteproc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org
Subject: Re: [PATCH v3 01/11] dt-bindings: remoteproc: mediatek: Give the
 subnode a persistent name

On 27/09/2022 04:55, Tinghan Shen wrote:
> The node name doesn't matter to add the subnode as a cros-ec rpmsg device.
> Give it a clear persistent node name to simplify scp yaml.
> 
> Signed-off-by: Tinghan Shen <tinghan.shen@...iatek.com>
> ---
>  .../bindings/remoteproc/mtk,scp.yaml          | 35 ++++++++++---------
>  .../arm64/boot/dts/mediatek/mt8183-kukui.dtsi |  2 +-
>  2 files changed, 20 insertions(+), 17 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/remoteproc/mtk,scp.yaml b/Documentation/devicetree/bindings/remoteproc/mtk,scp.yaml
> index 7e091eaffc18..786bed897916 100644
> --- a/Documentation/devicetree/bindings/remoteproc/mtk,scp.yaml
> +++ b/Documentation/devicetree/bindings/remoteproc/mtk,scp.yaml
> @@ -58,6 +58,23 @@ properties:
>    memory-region:
>      maxItems: 1
>  
> +  cros-ec-rpmsg:
> +    type: object

additionalProperties: false on this level

> +    description:
> +      This subnode represents the rpmsg device. The names of the devices

What are the devices? You wrote that it is one device, not devices.

> +      are not important. The properties of this node are defined by the
> +      individual bindings for the rpmsg devices.

??? No, you need to define the properties of the node, e.g. by a ref.

> +
> +    properties:
> +      mediatek,rpmsg-name:
> +        $ref: /schemas/types.yaml#/definitions/string-array
> +        description:
> +          Contains the name for the rpmsg device. Used to match
> +          the subnode to rpmsg device announced by SCP.

maxItems... but is it really a string-array?

> +
> +    required:
> +      - mediatek,rpmsg-name
> +
>  required:
>    - compatible
>    - reg
> @@ -89,21 +106,7 @@ allOf:
>          reg-names:
>            maxItems: 2
>  

Best regards,
Krzysztof