[PATCH 2/2] iommu/mediatek: Add mt8186 iommu support

[AngeloGioacchino Del Regno]

Il 25/01/22 10:32, Yong Wu ha scritto:
> Add mt8186 iommu supports.
> 
> Signed-off-by: Anan Sun <anan.sun at mediatek.com>
> Signed-off-by: Yong Wu <yong.wu at mediatek.com>
> ---
>   drivers/iommu/mtk_iommu.c | 17 +++++++++++++++++
>   1 file changed, 17 insertions(+)
> 
> diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
> index be36e73e4bcc..a3124f48f9e1 100644
> --- a/drivers/iommu/mtk_iommu.c
> +++ b/drivers/iommu/mtk_iommu.c
> @@ -160,6 +160,7 @@ enum mtk_iommu_plat {
>   	M4U_MT8167,
>   	M4U_MT8173,
>   	M4U_MT8183,
> +	M4U_MT8186,
>   	M4U_MT8192,
>   	M4U_MT8195,
>   };
> @@ -1401,6 +1402,21 @@ static const struct mtk_iommu_plat_data mt8183_data = {
>   	.larbid_remap = {{0}, {4}, {5}, {6}, {7}, {2}, {3}, {1}},
>   };
>   
> +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 | NOT_STD_AXI_MODE |
> +			  MTK_IOMMU_TYPE_MM,
> +	.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}},
> +	.inv_sel_reg    = REG_MMU_INV_SEL_GEN2,
> +	.banks_num      = 1,
> +	.banks_enable   = {true},
> +	.iova_region    = mt8192_multi_dom,
> +	.iova_region_nr = ARRAY_SIZE(mt8192_multi_dom),
> +};
> +
>   static const struct mtk_iommu_plat_data mt8192_data = {
>   	.m4u_plat       = M4U_MT8192,
>   	.flags          = HAS_BCLK | HAS_SUB_COMM_2BITS | OUT_ORDER_WR_EN |
> @@ -1470,6 +1486,7 @@ static const struct of_device_id mtk_iommu_of_ids[] = {
>   	{ .compatible = "mediatek,mt8167-m4u", .data = &mt8167_data},
>   	{ .compatible = "mediatek,mt8173-m4u", .data = &mt8173_data},
>   	{ .compatible = "mediatek,mt8183-m4u", .data = &mt8183_data},
> +	{ .compatible = "mediatek,mt8186-iommu-mm", .data = &mt8186_data_mm},

Hello!

Is there any particular reason why this compatible is not "mediatek,mt8186-m4u"?

Thanks,
Angelo

>   	{ .compatible = "mediatek,mt8192-m4u", .data = &mt8192_data},
>   	{ .compatible = "mediatek,mt8195-iommu-infra", .data = &mt8195_data_infra},
>   	{ .compatible = "mediatek,mt8195-iommu-vdo",   .data = &mt8195_data_vdo},
>