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| author | Chengci.Xu <chengci.xu@mediatek.com> | 2022-08-17 20:46:07 +0800 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> | 2022-08-30 20:54:05 +0300 |
| commit | 4e508b259ed02f5fa608cdd83b817a7f49c22271 (patch) | |
| tree | fe616ab4fcbaa42cd115da667be36d1e8e39582b /include/soc/mediatek | |
| parent | 8c1561edc0692fa8e321daf2777c3c32454b5748 (diff) | |
| download | linux-4e508b259ed02f5fa608cdd83b817a7f49c22271.tar.bz2 | |
memory: mtk-smi: Add enable IOMMU SMC command for MM master
For concerns about security, the register to enable/disable IOMMU of
SMI LARB should only be configured in secure world. Thus, we add some
SMC command for multimedia master to enable/disable MM IOMMU in ATF by
setting the register of SMI LARB. This function is prepared for MT8188.
Signed-off-by: Chengci.Xu <chengci.xu@mediatek.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220817124608.10062-4-chengci.xu@mediatek.com
Diffstat (limited to 'include/soc/mediatek')
| -rw-r--r-- | include/soc/mediatek/smi.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/soc/mediatek/smi.h b/include/soc/mediatek/smi.h index 11f7d6b59642..dfd8efca5e60 100644 --- a/include/soc/mediatek/smi.h +++ b/include/soc/mediatek/smi.h @@ -11,6 +11,11 @@ #if IS_ENABLED(CONFIG_MTK_SMI) +enum iommu_atf_cmd { + IOMMU_ATF_CMD_CONFIG_SMI_LARB, /* For mm master to en/disable iommu */ + IOMMU_ATF_CMD_MAX, +}; + #define MTK_SMI_MMU_EN(port) BIT(port) struct mtk_smi_larb_iommu { |