linux-kernel - Re: [PATCH] iommu/mediatek: Add PGTABLE_PA_35

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Message-ID: <f671f8d84b72ffff1d3b66bd2c48b4ffe81df79a.camel@mediatek.com>
Date: Mon, 21 Oct 2024 08:06:03 +0000
From: Yong Wu (吴勇) <Yong.Wu@...iatek.com>
To: "konrada@...gle.com" <konrada@...gle.com>
CC: "linux-mediatek@...ts.infradead.org" <linux-mediatek@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"wmacek@...gle.com" <wmacek@...gle.com>, "robin.murphy@....com"
	<robin.murphy@....com>, "joro@...tes.org" <joro@...tes.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>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	"will@...nel.org" <will@...nel.org>
Subject: Re: [PATCH] iommu/mediatek: Add PGTABLE_PA_35_EN to mt8186 platform
 data

On Thu, 2024-10-17 at 11:20 +0000, Konrad Adamczyk wrote:
>  	 
> External email : Please do not click links or open attachments until
> you have verified the sender or the content.
>  The MT8186 chip supports 35-bit physical addresses in page table
> [1].
> Set this platform flag.
> 
> [1] MT8186G_Application Processor Functional Specification_v1.0
> 
> Signed-off-by: Konrad Adamczyk <konrada@...gle.com>

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

> ---
>  drivers/iommu/mtk_iommu.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
> index 6a2707fe7a78..c45313c43b9e 100644
> --- a/drivers/iommu/mtk_iommu.c
> +++ b/drivers/iommu/mtk_iommu.c
> @@ -1599,7 +1599,7 @@ static const unsigned int
> mt8186_larb_region_msk[MT8192_MULTI_REGION_NR_MAX][MTK
>  static const struct mtk_iommu_plat_data mt8186_data_mm = {
>  .m4u_plat       = M4U_MT8186,
>  .flags          = HAS_BCLK | HAS_SUB_COMM_2BITS | OUT_ORDER_WR_EN |
> -  WR_THROT_EN | IOVA_34_EN | MTK_IOMMU_TYPE_MM,
> +  WR_THROT_EN | IOVA_34_EN | MTK_IOMMU_TYPE_MM | PGTABLE_PA_35_EN,
>  .larbid_remap   = {{0}, {1, MTK_INVALID_LARBID, 8}, {4}, {7}, {2},
> {9, 11, 19, 20},
>     {MTK_INVALID_LARBID, 14, 16},
>     {MTK_INVALID_LARBID, 13, MTK_INVALID_LARBID, 17}},
> -- 
> 2.47.0.105.g07ac214952-goog
>