From: Yunfei Wang <yf.wang@xxxxxxxxxxxx>
Add the quirk IO_PGTABLE_QUIRK_ARM_MTK_TTBR_EXT support, so that
level 2 page table can allocate in normal memory.
Signed-off-by: Ning Li <ning.li@xxxxxxxxxxxx>
Signed-off-by: Yunfei Wang <yf.wang@xxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # 5.10.*
---
drivers/iommu/mtk_iommu.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 6fd75a60abd6..27481f562df7 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -118,6 +118,7 @@
#define WR_THROT_EN BIT(6)
#define HAS_LEGACY_IVRP_PADDR BIT(7)
#define IOVA_34_EN BIT(8)
+#define PGTABLE_L2_PA_35_EN BIT(9)
#define MTK_IOMMU_HAS_FLAG(pdata, _x) \
((((pdata)->flags) & (_x)) == (_x))
@@ -401,6 +402,9 @@ static int mtk_iommu_domain_finalise(struct mtk_iommu_domain *dom,
.iommu_dev = data->dev,
};
+ if (MTK_IOMMU_HAS_FLAG(data->plat_data, PGTABLE_L2_PA_35_EN))
+ dom->cfg.quirks |= IO_PGTABLE_QUIRK_ARM_MTK_TTBR_EXT;
+
if (MTK_IOMMU_HAS_FLAG(data->plat_data, HAS_4GB_MODE))
dom->cfg.oas = data->enable_4GB ? 33 : 32;
else
@@ -1038,7 +1042,8 @@ static const struct mtk_iommu_plat_data mt2712_data = {
static const struct mtk_iommu_plat_data mt6779_data = {
.m4u_plat = M4U_MT6779,
- .flags = HAS_SUB_COMM | OUT_ORDER_WR_EN | WR_THROT_EN,
+ .flags = HAS_SUB_COMM | OUT_ORDER_WR_EN | WR_THROT_EN |
+ PGTABLE_L2_PA_35_EN,
.inv_sel_reg = REG_MMU_INV_SEL_GEN2,
.iova_region = single_domain,
.iova_region_nr = ARRAY_SIZE(single_domain),
--
2.18.0
