linux-kernel - Re: [PATCH 19/38] arm64: dts: mediatek: mt6795: Add mediatek,infracfg to iommu node

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Message-ID: <CAC=S1nguRWyG3ubmSFE95_zgsCjjq4dxGWr5ErV9-Yu2+mTmpw@mail.gmail.com>
Date: Fri, 25 Jul 2025 18:52:31 +0800
From: Fei Shao <fshao@...omium.org>
To: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: linux-mediatek@...ts.infradead.org, robh@...nel.org, 
	daniel.lezcano@...aro.org, mwalle@...nel.org, devicetree@...r.kernel.org, 
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Subject: Re: [PATCH 19/38] arm64: dts: mediatek: mt6795: Add mediatek,infracfg
 to iommu node

On Thu, Jul 24, 2025 at 5:49 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com> wrote:
>
> The "M4U" IOMMU requires a handle to the infracfg to switch to
> the 4gb/pae addressing mode: add it.
>
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>

Reviewed-by: Fei Shao <fshao@...omium.org>

> ---
>  arch/arm64/boot/dts/mediatek/mt6795.dtsi | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm64/boot/dts/mediatek/mt6795.dtsi b/arch/arm64/boot/dts/mediatek/mt6795.dtsi
> index e5e269a660b1..38f65aad2802 100644
> --- a/arch/arm64/boot/dts/mediatek/mt6795.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt6795.dtsi
> @@ -427,6 +427,7 @@ iommu: iommu@...05000 {
>                         clocks = <&infracfg CLK_INFRA_M4U>;
>                         clock-names = "bclk";
>                         interrupts = <GIC_SPI 146 IRQ_TYPE_LEVEL_LOW>;
> +                       mediatek,infracfg = <&infracfg>;
>                         mediatek,larbs = <&larb0 &larb1 &larb2 &larb3>;
>                         power-domains = <&spm MT6795_POWER_DOMAIN_MM>;
>                         #iommu-cells = <1>;
> --
> 2.50.1
>
>