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Commit f23c68a9 authored by Icenowy Zheng's avatar Icenowy Zheng Committed by Maxime Ripard
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dt-bindings: add bindings for DE2 on V3s SoC 



Allwinner V3s SoC have a display engine which have a different pipeline
with older SoCs.

Add document for it (new compatibles and the new "mixer" part).

Signed-off-by: default avatarIcenowy Zheng <icenowy@aosc.io>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarMaxime Ripard <maxime.ripard@free-electrons.com>
parent cf80aeef

Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt

+24 −2
Original line number Diff line number Diff line
@@ -41,6 +41,7 @@ Required properties: 
   * allwinner,sun6i-a31-tcon

   * allwinner,sun6i-a31s-tcon

   * allwinner,sun8i-a33-tcon

   * allwinner,sun8i-v3s-tcon

 - reg: base address and size of memory-mapped region

 - interrupts: interrupt associated to this IP

 - clocks: phandles to the clocks feeding the TCON. Three are needed:
@@ -62,7 +63,7 @@ Required properties: 
  second the block connected to the TCON channel 1 (usually the TV

  encoder)



On SoCs other than the A33, there is one more clock required:

On SoCs other than the A33 and V3s, there is one more clock required:

   - 'tcon-ch1': The clock driving the TCON channel 1



DRC
@@ -148,6 +149,26 @@ Required properties: 
  Documentation/devicetree/bindings/media/video-interfaces.txt. The

  first port should be the input endpoints, the second one the outputs



Display Engine 2.0 Mixer

------------------------



The DE2 mixer have many functionalities, currently only layer blending is

supported.



Required properties:

  - compatible: value must be one of:

    * allwinner,sun8i-v3s-de2-mixer

  - reg: base address and size of the memory-mapped region.

  - clocks: phandles to the clocks feeding the mixer

    * bus: the mixer interface clock

    * mod: the mixer module clock

  - clock-names: the clock names mentioned above

  - resets: phandles to the reset controllers driving the mixer



- ports: A ports node with endpoint definitions as defined in

  Documentation/devicetree/bindings/media/video-interfaces.txt. The

  first port should be the input endpoints, the second one the output





Display Engine Pipeline

-----------------------
@@ -162,9 +183,10 @@ Required properties: 
    * allwinner,sun6i-a31-display-engine

    * allwinner,sun6i-a31s-display-engine

    * allwinner,sun8i-a33-display-engine

    * allwinner,sun8i-v3s-display-engine



  - allwinner,pipelines: list of phandle to the display engine

    frontends available.

    frontends (DE 1.0) or mixers (DE 2.0) available.



Example: