diff options
| author | Yong Wu <yong.wu@mediatek.com> | 2017-08-21 14:00:16 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2017-08-22 17:37:58 +0300 |
| commit | e6dec92308628cff5f1f8bd1bcdf87581c9dc676 (patch) | |
| tree | d17007990ff95de3df378b2d6625f25e8b815b54 /drivers/iommu/mtk_iommu.h | |
| parent | a9467d954226f1a513cfe789a3a39d8fc73b5d16 (diff) | |
| download | linux-e6dec92308628cff5f1f8bd1bcdf87581c9dc676.tar.xz | |
iommu/mediatek: Add mt2712 IOMMU support
The M4U IP blocks in mt2712 is MTK's generation2 M4U which use the
ARM Short-descriptor like mt8173, and most of the HW registers are
the same.
The difference is that there are 2 M4U HWs in mt2712 while there's
only one in mt8173. The purpose of 2 M4U HWs is for balance the
bandwidth.
Normally if there are 2 M4U HWs, there should be 2 iommu domains,
each M4U has a iommu domain.
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/mtk_iommu.h')
| -rw-r--r-- | drivers/iommu/mtk_iommu.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/iommu/mtk_iommu.h b/drivers/iommu/mtk_iommu.h index c06cc91b5d9a..462e593b7d71 100644 --- a/drivers/iommu/mtk_iommu.h +++ b/drivers/iommu/mtk_iommu.h @@ -34,6 +34,12 @@ struct mtk_iommu_suspend_reg { u32 int_main_control; }; +enum mtk_iommu_plat { + M4U_MT2701, + M4U_MT2712, + M4U_MT8173, +}; + struct mtk_iommu_domain; struct mtk_iommu_data { @@ -50,6 +56,7 @@ struct mtk_iommu_data { bool tlb_flush_active; struct iommu_device iommu; + enum mtk_iommu_plat m4u_plat; }; static inline int compare_of(struct device *dev, void *data) |