linux-kernel - Re: [PATCH v3 1/2] dt-bindings: remoteproc: mediatek: Make l1tcm reg optional for mtk,scp

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Date:   Wed, 4 May 2022 10:21:49 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Nícolas F. R. A. Prado 
        <nfraprado@...labora.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     kernel@...labora.com,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Tinghan Shen <tinghan.shen@...iatek.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        linux-remoteproc@...r.kernel.org
Subject: Re: [PATCH v3 1/2] dt-bindings: remoteproc: mediatek: Make l1tcm reg
 optional for mtk,scp

Il 03/05/22 23:11, Nícolas F. R. A. Prado ha scritto:
> The SCP has three memory regions: sram, cfg and l1tcm. While the first
> two are required, l1tcm is optional. Fix the dt-binding so that it can
> be omitted and update the description. This gets rid of dtbs_check
> warnings for devicetrees where the l1tcm reg is missing like mt8183.
> 
> Signed-off-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>

> 
> ---
> 
> Changes in v3:
> - Made the cfg reg required again. After looking again into the mtk-scp
>    driver, only l1tcm is optional.
> - Added mention that a dtbs_check warning gets fixed by patch in commit
>    message.
> 
>   Documentation/devicetree/bindings/remoteproc/mtk,scp.yaml | 6 ++++--
>   1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/remoteproc/mtk,scp.yaml b/Documentation/devicetree/bindings/remoteproc/mtk,scp.yaml
> index 823a236242de..eeea84379a1e 100644
> --- a/Documentation/devicetree/bindings/remoteproc/mtk,scp.yaml
> +++ b/Documentation/devicetree/bindings/remoteproc/mtk,scp.yaml
> @@ -23,11 +23,13 @@ properties:
>   
>     reg:
>       description:
> -      Should contain the address ranges for memory regions SRAM, CFG, and
> -      L1TCM.
> +      Should contain the address ranges for memory regions SRAM, CFG, and,
> +      optionally, L1TCM.
> +    minItems: 2
>       maxItems: 3
>   
>     reg-names:
> +    minItems: 2
>       items:
>         - const: sram
>         - const: cfg