iommu/mediatek: Add support for MT6795 Helio X10 M4Us

Add support for the M4Us found in the MT6795 Helio X10 SoC.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Yong Wu <yong.wu@mediatek.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Link: https://lore.kernel.org/r/20220913151148.412312-4-angelogioacchino.delregno@collabora.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index b511359376f49b9f2f9c72f7466818958d7f6fdb..e3f03a1d32b81fae91d7e9ea9db399f92d6a1bf6 100644 (file)
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -158,6 +158,7 @@
 enum mtk_iommu_plat {
        M4U_MT2712,
        M4U_MT6779,
+       M4U_MT6795,
        M4U_MT8167,
        M4U_MT8173,
        M4U_MT8183,
@@ -1414,6 +1415,19 @@ 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,
@@ -1526,6 +1540,7 @@ 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},