Add mt8188 smi supporting in the bindings.
In mt8188, there are two smi-common HW, one is for vdo(video output),
the other is for vpp(video processing pipe). They connect with different
smi-larbs, then some setting(bus_sel) is different. Differentiate them
with the compatible string.
Something like this:
IOMMU(VDO) IOMMU(VPP)
| |
SMI_COMMON_VDO SMI_COMMON_VPP
---------------- ----------------
| | ... | | ...
larb0 larb2 ... larb1 larb3 ...
Signed-off-by: Chengci.Xu <chengci.xu@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Yong Wu <yong.wu@mediatek.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220817124608.10062-2-chengci.xu@mediatek.com
The max clock items for the dts node with compatible
'mediatek,mt8195-smi-sub-common' should be 3.
However, the dtbs_check of such node will get following message,
arch/arm64/boot/dts/mediatek/mt8195-evb.dtb: smi@14010000: clock-names: ['apb', 'smi', 'gals0'] is too long
From schema: Documentation/devicetree/bindings/memory-controllers/mediatek,smi-common.yaml
It's because the 'mediatek,mt8195-smi-sub-common' compatible incorrectly
matches the 'else' conditions for gen2 HW without gals.
Rewrite the 'else' condition to specifically identify the compatibles
that utilizing gen2 HW without gals.
Signed-off-by: Tinghan Shen <tinghan.shen@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220729063208.16799-3-tinghan.shen@mediatek.com
Add the binding for smi-sub-common. The SMI block diagram like this:
IOMMU
| |
smi-common
------------------
| .... |
larb0 larb7 <-max is 8
The smi-common connects with smi-larb and IOMMU. The maximum larbs number
that connects with a smi-common is 8. If the engines number is over 8,
sometimes we use a smi-sub-common which is nearly same with smi-common.
It supports up to 8 input and 1 output(smi-common has 2 output)
Something like:
IOMMU
| |
smi-common
---------------------
| | ...
larb0 sub-common ... <-max is 8
-----------
| | ... <-max is 8 too.
larb2 larb5
We don't need extra SW setting for smi-sub-common, only the sub-common has
special clocks need to enable when the engines access dram.
If it is sub-common, it should have a "mediatek,smi" phandle to point to
its smi-common. meanwhile the sub-common only has one gals clock.
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210914113703.31466-3-yong.wu@mediatek.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Add mt8195 smi supporting in the bindings.
In mt8195, there are two smi-common HW, one is for vdo(video output),
the other is for vpp(video processing pipe). They connect with different
smi-larbs, then some setting(bus_sel) is different. Differentiate them
with the compatible string.
Something like this:
IOMMU(VDO) IOMMU(VPP)
| |
SMI_COMMON_VDO SMI_COMMON_VPP
---------------- ----------------
| | ... | | ...
larb0 larb2 ... larb1 larb3 ...
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210914113703.31466-2-yong.wu@mediatek.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
