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Subject[PATCH 00/13] MT8183 IOMMU SUPPORT
Date
This patchset mainly adds support for mt8183 IOMMU and SMI.

mt8183 has only one M4U like mt8173 and is also MTK IOMMU gen2 which
uses ARM Short-Descriptor translation table format.

The mt8183 M4U-SMI HW diagram is as below:

EMI
|
M4U
|
----------
| |
gals0-rx gals1-rx
| |
| |
gals0-tx gals1-tx
| |
------------
SMI Common
------------
|
+-----+-----+--------+-----+-----+-------+-------+
| | | | | | | |
| | gals-rx gals-rx | gals-rx gals-rx gals-rx
| | | | | | | |
| | | | | | | |
| | gals-tx gals-tx | gals-tx gals-tx gals-tx
| | | | | | | |
larb0 larb1 larb2 larb3 larb4 larb5 larb6 CCU
disp vdec IPU0 IPU1 venc IPU1 cam

All the connections are HW fixed, SW can NOT adjust it.

Compared with mt8173, we add a GALS(Global Async Local Sync) module
between SMI-common and M4U, and additional between larb2/3/5/6 and
SMI-common. GALS can help synchronize for the modules in different
clock frequence, it can be seen as a "asynchronous fifo".

GALS can only help transfer the command/data while it don't have the
register, thus it has the special "smi" clock and it don't have the
"apb" clock. From the diagram above, we add "gals0" and "gals1"
clockes for smi-common and add a "gals" clock for smi-larb.

From the diagram above, CCU(Camera Control Unit) is connected with
smi-common directly, we can look it as "larb7" but its register space
is different with the normal larb.

This patchset is based on v4.19-rc1.
the patch 1/2/3/4/5 add the iommu/smi support for mt8183;
the patch 6/7/8/9 add mmu1 support;
the last patches contain some minor changes:
-patch 10 fix a issue.
-patch 11 improve the code flow(add shutdown).
-patch 12 cleanup some smi codes(delete need_larbid).
-patch 13 switch to SPDX license.
this patchset don't contain the dtsi part since it need depend on the
ccf and power-domain nodes which has not been accepted.

Yong Wu (13):
dt-bindings: mediatek: Add binding for mt8183 IOMMU and SMI
iommu/mediatek: Use a struct as the platform data
memory: mtk-smi: Use a general config_port interface
iommu/io-pgtable-arm-v7s: Extend MediaTek 4GB mode
iommu/mediatek: Add mt8183 IOMMU support
iommu/mediatek: Add mmu1 support
memory: mtk-smi: Invoke pm runtime_callback to enable clocks
memory: mtk-smi: Use a struct for the platform data for smi-common
memory: mtk-smi: Add bus_sel for mt8183
iommu/mediatek: Add VLD_PA_RANGE register backup when suspend
iommu/mediatek: Add shutdown callback
memory: mtk-smi: Get rid of need_larbid
iommu/mediatek: Switch to SPDX license identifier

.../devicetree/bindings/iommu/mediatek,iommu.txt | 15 +-
.../memory-controllers/mediatek,smi-common.txt | 11 +-
.../memory-controllers/mediatek,smi-larb.txt | 3 +
drivers/iommu/io-pgtable-arm-v7s.c | 38 ++-
drivers/iommu/io-pgtable.h | 8 +-
drivers/iommu/mtk_iommu.c | 145 +++++++----
drivers/iommu/mtk_iommu.h | 23 +-
drivers/iommu/mtk_iommu_v1.c | 10 +-
drivers/memory/mtk-smi.c | 267 ++++++++++++++-------
include/dt-bindings/memory/mt2701-larb-port.h | 10 +-
include/dt-bindings/memory/mt8173-larb-port.h | 10 +-
include/dt-bindings/memory/mt8183-larb-port.h | 130 ++++++++++
include/soc/mediatek/smi.h | 10 +-
13 files changed, 476 insertions(+), 204 deletions(-)
create mode 100644 include/dt-bindings/memory/mt8183-larb-port.h

--
1.9.1

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