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Message-ID: <9a5afd0c-0c92-52c3-72d9-2c2f6c469e05@gmail.com>
Date: Tue, 14 Jun 2022 17:16:40 +0200
From: Matthias Brugger <matthias.bgg@...il.com>
To: AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>, yong.wu@...iatek.com
Cc: joro@...tes.org, will@...nel.org, robh+dt@...nel.org,
krzysztof.kozlowski+dt@...aro.org,
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 v3 5/6] dt-bindings: iommu: mediatek: Add mediatek,pericfg
phandle
On 09/06/2022 12:08, AngeloGioacchino Del Regno wrote:
> Add property "mediatek,pericfg" to let the mtk_iommu driver retrieve
> a phandle to the infracfg syscon instead of performing a per-soc
> compatible lookup in the entire devicetree and set it as a required
> property for MT8195's infra IOMMU.
>
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Reviewd-by: Matthias Brugger <matthias.bgg@...il.com>
> ---
> .../devicetree/bindings/iommu/mediatek,iommu.yaml | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml b/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml
> index 4142a568b293..d5e3272a54e8 100644
> --- a/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml
> +++ b/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml
> @@ -116,6 +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: |
> @@ -183,6 +187,16 @@ allOf:
> required:
> - mediatek,infracfg
>
> + - if:
> + properties:
> + compatible:
> + contains:
> + const: mediatek,mt8195-iommu-infra
> +
> + then:
> + required:
> + - mediatek,pericfg
> +
> - if: # The IOMMUs don't have larbs.
> not:
> properties:
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