linux-kernel - Re: [PATCH v2 1/7] dt-bindings: iommu: mediatek: Add phandles for mediatek infra/pericfg

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Date:   Thu, 26 May 2022 16:21:33 +0800
From:   Yong Wu <yong.wu@...iatek.com>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Krzysztof Kozlowski <krzk@...nel.org>
CC:     <joro@...tes.org>, <will@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <matthias.bgg@...il.com>,
        <iommu@...ts.linux-foundation.org>,
        <linux-mediatek@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <krzysztof.kozlowski@...aro.org>
Subject: Re: [PATCH v2 1/7] dt-bindings: iommu: mediatek: Add phandles for
 mediatek infra/pericfg

On Wed, 2022-05-18 at 12:04 +0200, AngeloGioacchino Del Regno wrote:
> Add properties "mediatek,infracfg" and "mediatek,pericfg" to let the
> mtk_iommu driver retrieve phandles to the infracfg and pericfg
> syscon(s)
> instead of performing a per-soc compatible lookup.
> 
> Signed-off-by: AngeloGioacchino Del Regno <
> angelogioacchino.delregno@...labora.com>
> ---
>  .../devicetree/bindings/iommu/mediatek,iommu.yaml         | 8
> ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git
> a/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml
> b/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml
> index 2ae3bbad7f1a..c4af41947593 100644
> --- a/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml
> +++ b/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml
> @@ -101,6 +101,10 @@ properties:
>      items:
>        - const: bclk
>  
> +  mediatek,infracfg:
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +    description: The phandle to the mediatek infracfg syscon
> +

Just curious, why not put this "mediatek,infracfg" and its required
segment[6/7] into one patch?

>    mediatek,larbs:
>      $ref: /schemas/types.yaml#/definitions/phandle-array
>      minItems: 1
> @@ -112,6 +116,10 @@ properties:
>        Refer to bindings/memory-controllers/mediatek,smi-larb.yaml.
> It must sort
>        according to the local arbiter index, like larb0, larb1,
> larb2...
>  
> +  mediatek,pericfg:
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +    description: The phandle to the mediatek pericfg syscon
> +
>    '#iommu-cells':
>      const: 1
>      description: |