This patchset mainly adds support for M4U of mt2712.
The M4U in mt2712 is MTK's generation2 M4U which use the ARM
Short-descriptor like mt8173. The main difference is that there are 2
M4Us and 2 smi-commons in mt2712, while there is only 1 M4U and 1
smi-common in mt8173. The purpose is for balance the bandwidth.
The mt2712 M4U-SMI HW diagram is as below:
EMI
|
------------------------------------
| |
M4U0 M4U1
| |
smi-common0 smi-common1
| |
------------------------- --------------------------------
| | | | | | | | | |
| | | | | | | | | |
larb0 larb1 larb2 larb3 larb6 larb4 larb5 larb7 larb8 larb9
disp0 vdec cam venc jpg mdp1/disp1 mdp2/disp2 mdp3 vdo/nr tvd
This patchset is based on v4.13-rc1, Also it base on Robin's[1],
Honghui[2],Arvind[3], all have been applied. Currently it don't contain
the dtsi part.
The patch 1 adds the binding for MT2712 IOMMU, the patch 2 is a
prepared patch for mt2712, the patch 3 adds the MT2712 IOMMU support.
the patch 4/5 improve the m4u flow for mt2712,
the last patch 6/7/8 mainly fix bug or improve code.
[1]:https://patchwork.kernel.org/patch/9828671/
[2]:https://patchwork.kernel.org/patch/9880223/
[3]:https://patchwork.kernel.org/patch/9892759/
change log:
v2:
1) Add larb8 and larb9 in the HW diagram. larb8 and larb9 are called
by the bdpsys larb, they are a little special, their mmu_en register
offset is different from the normal larb. Fortunately, their mmu_en
register is enabled defaultly, we don't need set again.
After adding larb8 and larb9, the larb number is over 8, therefore,
MTK_LARB_NR_MAX also is increased.
2) Add a prepared patch that moving the MTK_M4U_TO_LARB/PORT into the
c file.
3) Discard the original patch[7/8] which was only a cleanup for SMI,
It's unnecessary for this patch-set.
4) Use subsys_initcall instead of IOMMU_OF_DECLARE according to
Robin's suggestion. Also, Improve some coding format, like using
for_each_set_bit and changing the definition of
F_MMU_TF_PROTECT_SEL.
v1:
https://lists.linuxfoundation.org/pipermail/iommu/2017-August/023664.html
Yong Wu (8):
dt-bindings: mediatek: Add binding for mt2712 IOMMU and SMI
iommu/mediatek: Move MTK_M4U_TO_LARB/PORT into mtk_iommu.c
iommu/mediatek: Add mt2712 IOMMU support
iommu/mediatek: Merge 2 M4U HWs into one iommu domain
iommu/mediatek: Move pgtable allocation into domain_alloc
iommu/mediatek: Disable iommu clock when system suspend
iommu/mediatek: Enlarge the validate PA range for 4GB mode
memory: mtk-smi: Degrade SMI init to module_init
.../devicetree/bindings/iommu/mediatek,iommu.txt | 6 +-
.../memory-controllers/mediatek,smi-common.txt | 6 +-
.../memory-controllers/mediatek,smi-larb.txt | 5 +-
drivers/iommu/mtk_iommu.c | 214 +++++++++++++--------
drivers/iommu/mtk_iommu.h | 9 +
drivers/memory/mtk-smi.c | 65 ++++++-
include/dt-bindings/memory/mt2712-larb-port.h | 102 ++++++++++
include/dt-bindings/memory/mt8173-larb-port.h | 4 -
include/soc/mediatek/smi.h | 2 +-
9 files changed, 314 insertions(+), 99 deletions(-)
create mode 100644 include/dt-bindings/memory/mt2712-larb-port.h
--
1.9.1
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