Commit 3fbf1eac authored by Yunfei Dong's avatar Yunfei Dong Committed by Mauro Carvalho Chehab
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media: dt-bindings: media: mediatek: vcodec: Adds decoder dt-bindings for lat soc 



Adds decoder dt-bindings for compatible "mediatek,mtk-vcodec-lat-soc".

Signed-off-by: default avatarYunfei Dong <yunfei.dong@mediatek.com>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@kernel.org>
parent b0f407c1

Documentation/devicetree/bindings/media/mediatek,vcodec-subdev-decoder.yaml

+35 −16
Original line number Diff line number Diff line
@@ -17,20 +17,20 @@ description: | 


  About the Decoder Hardware Block Diagram, please check below:



    +---------------------------------+------------------------------------+

    +------------------------------------------------+-------------------------------------+

    |                                                |                                     |

    | input -> lat HW -> lat buffer --|--> lat buffer -> core HW -> output |

    |            ||                   |                     ||             |

    +------------||-------------------+---------------------||-------------+

              lat workqueue           |              core workqueue     <parent>

    -------------||-----------------------------------------||------------------

                 ||                                         ||          <child>

                 \/ <----------------HW index-------------->\/

           +------------------------------------------------------+

    |  input -> lat soc HW -> lat HW -> lat buffer --|--> lat buffer -> core HW -> output  |

    |            ||             ||                   |                     ||              |

    +------------||-------------||-------------------+---------------------||--------------+

                 ||     lat     ||                   |               core workqueue  <parent>

    -------------||-------------||-------------------|---------------------||---------------

                 ||<------------||----------------HW index---------------->||        <child>

                 \/             \/                                         \/

               +-------------------------------------------------------------+

               |                          enable/disable                     |

               |                 clk     power    irq    iommu               |

               |                   (lat/lat soc/core0/core1)                 |

           +------------------------------------------------------+

               +-------------------------------------------------------------+



  As above, there are parent and child devices, child mean each hardware. The child device

  controls the information of each hardware independent which include clk/power/irq.
@@ -45,6 +45,13 @@ description: | 
  For the smi common may not the same for each hardware, can't combine all hardware in one node,

  or leading to iommu fault when access dram data.



  Lat soc is a hardware which is related with some larb(local arbiter) ports. For mt8195

  platform, there are some ports like RDMA, UFO in lat soc larb, need to enable its power and

  clock when lat start to work, don't have interrupt.



  mt8195: lat soc HW + lat HW + core HW

  mt8192: lat HW + core HW



properties:

  compatible:

    enum:
@@ -87,7 +94,9 @@ patternProperties: 


    properties:

      compatible:

        const: mediatek,mtk-vcodec-lat

        enum:

          - mediatek,mtk-vcodec-lat

          - mediatek,mtk-vcodec-lat-soc



      reg:

        maxItems: 1
@@ -125,7 +134,6 @@ patternProperties: 
    required:

      - compatible

      - reg

      - interrupts

      - iommus

      - clocks

      - clock-names
@@ -196,6 +204,17 @@ required: 
  - dma-ranges

  - ranges



if:

  properties:

    compatible:

      contains:

        enum:

          - mediatek,mtk-vcodec-lat



then:

  required:

    - interrupts



additionalProperties: false



examples: