[PATCH v2 4/5] iommu/mediatek: mt8189: Add INFRA IOMMUs support
Zhengnan Chen
zhengnan.chen at mediatek.com
Tue Oct 14 20:24:20 PDT 2025
Add support for mt8189 INFRA IOMMUs.
Signed-off-by: Zhengnan Chen <zhengnan.chen at mediatek.com>
---
drivers/iommu/mtk_iommu.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 999f7b858164..2eb62a073a58 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -339,6 +339,7 @@ static int mtk_iommu_hw_init(const struct mtk_iommu_data *data, unsigned int ban
#define MTK_IOMMU_4GB_MODE_REMAP_BASE 0x140000000UL
static LIST_HEAD(apulist); /* List the apu iommu HWs */
+static LIST_HEAD(infralist); /* List the iommu_infra HW */
static LIST_HEAD(m4ulist); /* List all the M4U HWs */
#define for_each_m4u(data, head) list_for_each_entry(data, head, list)
@@ -1758,6 +1759,18 @@ static const struct mtk_iommu_plat_data mt8189_data_apu = {
.iova_region_larb_msk = mt8189_apu_region_msk,
};
+static const struct mtk_iommu_plat_data mt8189_data_infra = {
+ .m4u_plat = M4U_MT8189,
+ .flags = WR_THROT_EN | DCM_DISABLE | MTK_IOMMU_TYPE_INFRA |
+ CFG_IFA_MASTER_IN_ATF | SHARE_PGTABLE | PGTABLE_PA_35_EN,
+ .hw_list = &infralist,
+ .banks_num = 1,
+ .banks_enable = {true},
+ .inv_sel_reg = REG_MMU_INV_SEL_GEN2,
+ .iova_region = single_domain,
+ .iova_region_nr = ARRAY_SIZE(single_domain),
+};
+
static const struct mtk_iommu_plat_data mt8192_data = {
.m4u_plat = M4U_MT8192,
.flags = HAS_BCLK | HAS_SUB_COMM_2BITS | OUT_ORDER_WR_EN |
@@ -1860,6 +1873,7 @@ static const struct of_device_id mtk_iommu_of_ids[] = {
{ .compatible = "mediatek,mt8188-iommu-vdo", .data = &mt8188_data_vdo},
{ .compatible = "mediatek,mt8188-iommu-vpp", .data = &mt8188_data_vpp},
{ .compatible = "mediatek,mt8189-iommu-apu", .data = &mt8189_data_apu},
+ { .compatible = "mediatek,mt8189-iommu-infra", .data = &mt8189_data_infra},
{ .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},
--
2.46.0
More information about the linux-arm-kernel
mailing list