Unverified Commit 0e6ee83c authored by Kaustabh Chakraborty's avatar Kaustabh Chakraborty Committed by Inki Dae
Browse files

dt-bindings: display: samsung,exynos7-decon: document iommus, memory-region, and ports 



Similar to FIMD and Exynos5433's DECON, the Exynos7 DECON hardware:
- May optionally require an IOMMU to initialize a display region.
- Outputs image data to another block, say an MIC or a DSI master.

If an IOMMU is present, it may also require to access the reserved
framebuffer region.

Document these bindings in the devicetree schema.

Signed-off-by: default avatarKaustabh Chakraborty <kauschluss@disroot.org>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
parent 77169a11

Documentation/devicetree/bindings/display/samsung/samsung,exynos7-decon.yaml

+21 −0
Original line number Diff line number Diff line
@@ -80,6 +80,21 @@ properties: 
      - const: vsync

      - const: lcd_sys



  iommus:

    maxItems: 1



  memory-region:

    maxItems: 1

    description:

      A phandle to a node describing a reserved framebuffer memory region.

      For example, the splash memory region set up by the bootloader.



  port:

    $ref: /schemas/graph.yaml#/properties/port

    description:

      Output port which is connected to either a Mobile Image Compressor

      (MIC) or a DSI Master device.



  power-domains:

    maxItems: 1
@@ -92,6 +107,7 @@ required: 
  - clock-names

  - interrupts

  - interrupt-names

  - port

  - reg



additionalProperties: false
@@ -118,4 +134,9 @@ examples: 
                      "decon0_vclk";

        pinctrl-0 = <&lcd_clk &pwm1_out>;

        pinctrl-names = "default";

        port {

            decon_to_dsi: endpoint {

                remote-endpoint = <&dsi_to_decon>;

            };

        };

    };