Commit d5cda142 authored by Chengci.Xu's avatar Chengci.Xu Committed by Joerg Roedel
Browse files

dt-bindings: mediatek: mt8188: Add binding for MM & INFRA IOMMU 



Add descriptions for mt8188 IOMMU which also use ARM Short-Descriptor
translation table format.

In mt8188, there are two smi-common HW and IOMMU, one is for vdo(video
output), the other is for vpp(video processing pipe). They connects
with different smi-larbs, then some setting(larbid_remap) 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  ...

We also have an IOMMU that is for infra master like PCIe.
And infra master don't have the larb and ports.

Signed-off-by: default avatarChengci.Xu <chengci.xu@mediatek.com>
Signed-off-by: default avatarYong Wu <yong.wu@mediatek.com>
Reviewed-by: default avatarAngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230602090227.7264-2-yong.wu@mediatek.com


Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 06c2afb8

Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml

+11 −1
Original line number Diff line number Diff line
@@ -78,6 +78,9 @@ properties: 
          - mediatek,mt8173-m4u  # generation two

          - mediatek,mt8183-m4u  # generation two

          - mediatek,mt8186-iommu-mm         # generation two

          - mediatek,mt8188-iommu-vdo        # generation two

          - mediatek,mt8188-iommu-vpp        # generation two

          - mediatek,mt8188-iommu-infra      # generation two

          - mediatek,mt8192-m4u  # generation two

          - mediatek,mt8195-iommu-vdo        # generation two

          - mediatek,mt8195-iommu-vpp        # generation two
@@ -123,6 +126,7 @@ properties: 
    description: |

      This is the mtk_m4u_id according to the HW. Specifies the mtk_m4u_id as

      defined in

      dt-binding/memory/mediatek,mt8188-memory-port.h for mt8188,

      dt-binding/memory/mt2701-larb-port.h for mt2701 and mt7623,

      dt-binding/memory/mt2712-larb-port.h for mt2712,

      dt-binding/memory/mt6779-larb-port.h for mt6779,
@@ -155,6 +159,8 @@ allOf: 
              - mediatek,mt6795-m4u

              - mediatek,mt8173-m4u

              - mediatek,mt8186-iommu-mm

              - mediatek,mt8188-iommu-vdo

              - mediatek,mt8188-iommu-vpp

              - mediatek,mt8192-m4u

              - mediatek,mt8195-iommu-vdo

              - mediatek,mt8195-iommu-vpp
@@ -168,6 +174,8 @@ allOf: 
        compatible:

          enum:

            - mediatek,mt8186-iommu-mm

            - mediatek,mt8188-iommu-vdo

            - mediatek,mt8188-iommu-vpp

            - mediatek,mt8192-m4u

            - mediatek,mt8195-iommu-vdo

            - mediatek,mt8195-iommu-vpp
@@ -194,7 +202,9 @@ allOf: 
        properties:

          compatible:

            contains:

              const: mediatek,mt8195-iommu-infra

              enum:

                - mediatek,mt8188-iommu-infra

                - mediatek,mt8195-iommu-infra



    then:

      required:

include/dt-bindings/memory/mediatek,mt8188-memory-port.h

0 → 100644
+489 −0

File added.

Preview size limit exceeded, changes collapsed.