[PATCH v4 1/5] dt-bindings: iommu: mediatek: Add mediatek,infracfg phandle
Matthias Brugger
matthias.bgg at gmail.com
Thu Jun 16 05:57:53 PDT 2022
On 16/06/2022 13:08, AngeloGioacchino Del Regno wrote:
> Add property "mediatek,infracfg" 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 MT2712 and MT8173.
>
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>
Reviewed-by: Matthias Brugger <matthias.bgg at gmail.com>
> ---
> .../bindings/iommu/mediatek,iommu.yaml | 17 +++++++++++++++++
> 1 file changed, 17 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml b/Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml
> index 2ae3bbad7f1a..fee0241b5098 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
> +
> mediatek,larbs:
> $ref: /schemas/types.yaml#/definitions/phandle-array
> minItems: 1
> @@ -167,6 +171,18 @@ allOf:
> required:
> - power-domains
>
> + - if:
> + properties:
> + compatible:
> + contains:
> + enum:
> + - mediatek,mt2712-m4u
> + - mediatek,mt8173-m4u
> +
> + then:
> + required:
> + - mediatek,infracfg
> +
> - if: # The IOMMUs don't have larbs.
> not:
> properties:
> @@ -191,6 +207,7 @@ examples:
> interrupts = <GIC_SPI 139 IRQ_TYPE_LEVEL_LOW>;
> clocks = <&infracfg CLK_INFRA_M4U>;
> clock-names = "bclk";
> + mediatek,infracfg = <&infracfg>;
> mediatek,larbs = <&larb0>, <&larb1>, <&larb2>,
> <&larb3>, <&larb4>, <&larb5>;
> #iommu-cells = <1>;
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