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Subject[PATCH v7 12/36] iommu/mediatek: Add a flag STD_AXI_MODE
Date
Add a new flag STD_AXI_MODE which is prepared for infra and apu iommu
which use the standard axi mode. All the current SoC don't use this flag.

Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
drivers/iommu/mtk_iommu.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 92f172a772d1..22e2b104e3ee 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -122,6 +122,7 @@
#define IOVA_34_EN BIT(8)
#define SHARE_PGTABLE BIT(9) /* 2 HW share pgtable */
#define DCM_DISABLE BIT(10)
+#define STD_AXI_MODE BIT(11) /* For non MM iommu */

#define MTK_IOMMU_HAS_FLAG(pdata, _x) \
((((pdata)->flags) & (_x)) == (_x))
@@ -785,7 +786,8 @@ static int mtk_iommu_hw_init(const struct mtk_iommu_data *data)
regval = 0;
} else {
regval = readl_relaxed(data->base + REG_MMU_MISC_CTRL);
- regval &= ~F_MMU_STANDARD_AXI_MODE_MASK;
+ if (!MTK_IOMMU_HAS_FLAG(data->plat_data, STD_AXI_MODE))
+ regval &= ~F_MMU_STANDARD_AXI_MODE_MASK;
if (MTK_IOMMU_HAS_FLAG(data->plat_data, OUT_ORDER_WR_EN))
regval &= ~F_MMU_IN_ORDER_WR_EN_MASK;
}
--
2.18.0
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