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

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Message-ID: <7765f224-60b2-4c92-a597-58c1c6bc5580@gmail.com>
Date: Fri, 12 Sep 2025 16:03:08 +0200
From: Matthias Brugger <matthias.bgg@...il.com>
To: Fei Shao <fshao@...omium.org>,
 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 25/07/2025 12:52, Fei Shao wrote:
> 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>

Applied thanks

> 
>> ---
>>   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
>>
>>