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

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Message-ID: <903ccd6ee71f179a71a20cead597709dc3e9f507.camel@mediatek.com>
Date: Sat, 18 Oct 2025 13:04:10 +0000
From: Zhengnan Chen (陈征南)
	<Zhengnan.Chen@...iatek.com>
To: Yong Wu (吴勇) <Yong.Wu@...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>, "conor+dt@...nel.org" <conor+dt@...nel.org>,
	Project_Global_Chrome_Upstream_Group
	<Project_Global_Chrome_Upstream_Group@...iatek.com>, "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 Sat, 2025-10-18 at 02:28 +0000, Yong Wu (吴勇) wrote:
> 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.
> 
ok, it will be fixed in the next version.
> Reviewed-by: Yong Wu <yong.wu@...iatek.com>
> 
> Thanks.