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| author |   Maxime Ripard <maxime@cerno.tech> | 2020-05-13 16:07:22 +0200 |
|---|---|---|
| committer |   Joerg Roedel <jroedel@suse.de> | 2020-05-14 17:48:57 +0200 |
| commit | 4100b8c229b328358cc4a82f5042dbf22f1c1ccb (patch) | |
| tree | 7ef9d431fe1ef02005c7e8585b40a8347dbc2c06 /drivers/iommu/Kconfig | |
| parent | dt-bindings: iommu: Add Allwinner H6 IOMMU bindings (diff) | |
| download | linux-dev-4100b8c229b328358cc4a82f5042dbf22f1c1ccb.tar.xz linux-dev-4100b8c229b328358cc4a82f5042dbf22f1c1ccb.zip | |
iommu: Add Allwinner H6 IOMMU driver
The Allwinner H6 has introduced an IOMMU for a few DMA controllers, mostly
video related: the display engine, the video decoders / encoders, the
camera capture controller, etc.
The design is pretty simple compared to other IOMMUs found in SoCs: there's
a single instance, controlling all the masters, with a single address
space.
It also features a performance monitoring unit that allows to retrieve
various informations (per-master and global TLB accesses, hits and misses,
access latency, etc) that isn't supported at the moment.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/d122a8670361e36fc26b4ce2674a2223d30dc4cc.1589378833.git-series.maxime@cerno.tech
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/Kconfig')
| -rw-r--r-- | drivers/iommu/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig index 2ab07ce17abb..aca76383f201 100644 --- a/drivers/iommu/Kconfig +++ b/drivers/iommu/Kconfig @@ -303,6 +303,15 @@ config ROCKCHIP_IOMMU Say Y here if you are using a Rockchip SoC that includes an IOMMU device. +config SUN50I_IOMMU + bool "Allwinner H6 IOMMU Support" + depends on ARCH_SUNXI || COMPILE_TEST + select ARM_DMA_USE_IOMMU + select IOMMU_API + select IOMMU_DMA + help + Support for the IOMMU introduced in the Allwinner H6 SoCs. + config TEGRA_IOMMU_GART bool "Tegra GART IOMMU Support" depends on ARCH_TEGRA_2x_SOC |