Re: [PATCH v2 3/3] iommu/mediatek: Add MT8188 IOMMU Support
From: AngeloGioacchino Del Regno
Date: Fri Sep 02 2022 - 05:04:55 EST
Il 31/08/22 14:55, Chengci.Xu ha scritto:
MT8188 has 3 IOMMU, containing 2 MM IOMMUs, one is for vdo, the other
is for vpp. and 1 INFRA IOMMU.
Signed-off-by: Chengci.Xu <chengci.xu@xxxxxxxxxxxx>
---
drivers/iommu/mtk_iommu.c | 48 +++++++++++++++++++++++++++++++++++++++
1 file changed, 48 insertions(+)
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 6fe780783ec8..98c2eae5229e 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -164,6 +164,7 @@ enum mtk_iommu_plat {
M4U_MT8173,
M4U_MT8183,
M4U_MT8186,
+ M4U_MT8188,
M4U_MT8192,
M4U_MT8195,
};
@@ -1479,6 +1480,50 @@ static const struct mtk_iommu_plat_data mt8186_data_mm = {
.iova_region_nr = ARRAY_SIZE(mt8192_multi_dom),
};
+static const struct mtk_iommu_plat_data mt8188_data_infra = {
+ .m4u_plat = M4U_MT8188,
+ .flags = WR_THROT_EN | DCM_DISABLE | STD_AXI_MODE | PM_CLK_AO |
+ MTK_IOMMU_TYPE_INFRA | IFA_IOMMU_PCIE_SUPPORT |
+ CFG_IFA_MASTER_IN_ATF,
+ .pericfg_comp_str = "mediatek,mt8188-pericfg_ao",
pericfg_comp_str is used only for IOMMU enable from Linux, but MT8188 enables it
with a SMC command, so this is unused.
Please drop it.
+ .inv_sel_reg = REG_MMU_INV_SEL_GEN2,
+ .banks_num = 1,
+ .banks_enable = {true},
+ .iova_region = single_domain,
+ .iova_region_nr = ARRAY_SIZE(single_domain),
+};
+
Regards,
Angelo