Commit 58617149 authored by Vignesh Raghavendra's avatar Vignesh Raghavendra Committed by Vinod Koul
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dt-bindings: dma: ti: k3-bcdma: Add bindings for BCDMA CSI RX 



AM62A SoC has a dedicated BCDMA that serves Camera Serial Interface
(CSI) IP. Add new compatible for the same. Unlike system
BCDMA, this instance only has RX DMA channels and lack TX or block copy
channel. Thus make those properties optional. Additionally CSI RX has
independent power domain, add the binding for the same.

Signed-off-by: default avatarVignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: default avatarPeter Ujfalusi <peter.ujfalusi@gmail.com>
Link: https://lore.kernel.org/r/20221213164304.1126945-2-vigneshr@ti.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent cc7aac1d

Documentation/devicetree/bindings/dma/ti/k3-bcdma.yaml

+59 −18
Original line number Diff line number Diff line
@@ -28,13 +28,19 @@ description: | 
  PDMAs can be configured via BCDMA split channel's peer registers to match with

  the configuration of the legacy peripheral.



allOf:

  - $ref: /schemas/dma/dma-controller.yaml#

  - $ref: /schemas/arm/keystone/ti,k3-sci-common.yaml#



properties:

  compatible:

    const: ti,am64-dmss-bcdma

    enum:

      - ti,am62a-dmss-bcdma-csirx

      - ti,am64-dmss-bcdma



  reg:

    minItems: 3

    maxItems: 5



  reg-names:

    minItems: 3

    maxItems: 5



  "#dma-cells":

    const: 3
@@ -65,19 +71,13 @@ properties: 


      cell 3: ASEL value for the channel



  reg:

    maxItems: 5



  reg-names:

    items:

      - const: gcfg

      - const: bchanrt

      - const: rchanrt

      - const: tchanrt

      - const: ringrt



  msi-parent: true



  power-domains:

    description:

      Power domain if available

    maxItems: 1



  ti,asel:

    $ref: /schemas/types.yaml#/definitions/uint32

    description: ASEL value for non slave channels
@@ -123,9 +123,50 @@ required: 
  - msi-parent

  - ti,sci

  - ti,sci-dev-id

  - ti,sci-rm-range-rchan



allOf:

  - $ref: /schemas/dma/dma-controller.yaml#

  - $ref: /schemas/arm/keystone/ti,k3-sci-common.yaml#



  - if:

      properties:

        compatible:

          contains:

            const: ti,am62a-dmss-bcdma-csirx

    then:

      properties:

        ti,sci-rm-range-bchan: false

        ti,sci-rm-range-tchan: false



        reg:

          maxItems: 3



        reg-names:

          items:

            - const: gcfg

            - const: rchanrt

            - const: ringrt



      required:

        - power-domains



    else:

      properties:

        reg:

          minItems: 5



        reg-names:

          items:

            - const: gcfg

            - const: bchanrt

            - const: rchanrt

            - const: tchanrt

            - const: ringrt



      required:

        - ti,sci-rm-range-bchan

        - ti,sci-rm-range-tchan

  - ti,sci-rm-range-rchan



unevaluatedProperties: false