[PATCH v3 3/3] iommu: mtk_iommu: Add support for MT6795 Helio X10 M4Us

[Yong Wu]

On Thu, 2022-06-09 at 12:40 +0200, AngeloGioacchino Del Regno wrote:
> Add support for the M4Us found in the MT6795 Helio X10 SoC.
> 
> Signed-off-by: AngeloGioacchino Del Regno <
> angelogioacchino.delregno at collabora.com>

Retitle to: iommu/mediatek: Xxx, then

Reviewed-by: Yong Wu <yong.wu at mediatek.com>

> ---
>  drivers/iommu/mtk_iommu.c | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
> index 8611cf8e4bd5..beca1c5a6c10 100644
> --- a/drivers/iommu/mtk_iommu.c
> +++ b/drivers/iommu/mtk_iommu.c
> @@ -160,6 +160,7 @@
>  enum mtk_iommu_plat {
>  	M4U_MT2712,
>  	M4U_MT6779,
> +	M4U_MT6795,
>  	M4U_MT8167,
>  	M4U_MT8173,
>  	M4U_MT8183,
> @@ -1424,6 +1425,19 @@ static const struct mtk_iommu_plat_data
> mt6779_data = {
>  	.larbid_remap  = {{0}, {1}, {2}, {3}, {5}, {7, 8}, {10}, {9}},
>  };
>  
> +static const struct mtk_iommu_plat_data mt6795_data = {
> +	.m4u_plat     = M4U_MT6795,
> +	.flags	      = HAS_4GB_MODE | HAS_BCLK | RESET_AXI |
> +			HAS_LEGACY_IVRP_PADDR | MTK_IOMMU_TYPE_MM |
> +			TF_PORT_TO_ADDR_MT8173,
> +	.inv_sel_reg  = REG_MMU_INV_SEL_GEN1,
> +	.banks_num    = 1,
> +	.banks_enable = {true},
> +	.iova_region  = single_domain,
> +	.iova_region_nr = ARRAY_SIZE(single_domain),
> +	.larbid_remap = {{0}, {1}, {2}, {3}, {4}}, /* Linear mapping.
> */
> +};
> +
>  static const struct mtk_iommu_plat_data mt8167_data = {
>  	.m4u_plat     = M4U_MT8167,
>  	.flags        = RESET_AXI | HAS_LEGACY_IVRP_PADDR |
> MTK_IOMMU_TYPE_MM,
> @@ -1536,6 +1550,7 @@ static const struct mtk_iommu_plat_data
> mt8195_data_vpp = {
>  static const struct of_device_id mtk_iommu_of_ids[] = {
>  	{ .compatible = "mediatek,mt2712-m4u", .data = &mt2712_data},
>  	{ .compatible = "mediatek,mt6779-m4u", .data = &mt6779_data},
> +	{ .compatible = "mediatek,mt6795-m4u", .data = &mt6795_data},
>  	{ .compatible = "mediatek,mt8167-m4u", .data = &mt8167_data},
>  	{ .compatible = "mediatek,mt8173-m4u", .data = &mt8173_data},
>  	{ .compatible = "mediatek,mt8183-m4u", .data = &mt8183_data},