linux-kernel - Re: [PATCH v3 3/5] iommu/mediatek: mt8189: Add APU IOMMUs support

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Message-ID: <e7bd34b9bb34e9bd9538b2ce493e271d4688f4c5.camel@mediatek.com>
Date: Sat, 18 Oct 2025 02:28:47 +0000
From: Yong Wu (吴勇) <Yong.Wu@...iatek.com>
To: Zhengnan Chen (陈征南)
	<Zhengnan.Chen@...iatek.com>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mediatek@...ts.infradead.org" <linux-mediatek@...ts.infradead.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"robin.murphy@....com" <robin.murphy@....com>, "joro@...tes.org"
	<joro@...tes.org>, Project_Global_Chrome_Upstream_Group
	<Project_Global_Chrome_Upstream_Group@...iatek.com>, "conor+dt@...nel.org"
	<conor+dt@...nel.org>, "robh@...nel.org" <robh@...nel.org>,
	"linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "iommu@...ts.linux.dev"
	<iommu@...ts.linux.dev>, "matthias.bgg@...il.com" <matthias.bgg@...il.com>,
	"krzk+dt@...nel.org" <krzk+dt@...nel.org>, AngeloGioacchino Del Regno
	<angelogioacchino.delregno@...labora.com>, "will@...nel.org"
	<will@...nel.org>
Subject: Re: [PATCH v3 3/5] iommu/mediatek: mt8189: Add APU IOMMUs support

On Wed, 2025-10-15 at 20:55 +0800, Zhengnan Chen wrote:
> Add support for mt8189 APU IOMMUs.
> 
> Signed-off-by: Zhengnan Chen <zhengnan.chen@...iatek.com>
> Reviewed-by: AngeloGioacchino Del Regno <
> angelogioacchino.delregno@...labora.com>
> ---
>  drivers/iommu/mtk_iommu.c | 34 ++++++++++++++++++++++++++++++++++
>  1 file changed, 34 insertions(+)
> 
> diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
> index 7af47c59b10b..999f7b858164 100644
> --- a/drivers/iommu/mtk_iommu.c
> +++ b/drivers/iommu/mtk_iommu.c
> @@ -139,6 +139,7 @@
>  /* 2 bits: iommu type */
>  #define MTK_IOMMU_TYPE_MM		(0x0 << 13)
>  #define MTK_IOMMU_TYPE_INFRA		(0x1 << 13)
> +#define MTK_IOMMU_TYPE_APU		(0x2 << 13)
>  #define MTK_IOMMU_TYPE_MASK		(0x3 << 13)
>  /* PM and clock always on. e.g. infra iommu */
>  #define PM_CLK_AO			BIT(15)
> @@ -172,6 +173,7 @@ enum mtk_iommu_plat {
>  	M4U_MT8173,
>  	M4U_MT8183,
>  	M4U_MT8186,
> +	M4U_MT8189,
>  	M4U_MT8188,

Move after mt8188.

Reviewed-by: Yong Wu <yong.wu@...iatek.com>

Thanks.