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: Icenowy Zheng icenowy@aosc.io Acked-by: Rob Herring robh@kernel.org --- .../bindings/display/sunxi/sun4i-drm.txt | 29 ++++++++++++++++++++-- 1 file changed, 27 insertions(+), 2 deletions(-)
diff --git a/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt b/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt index 7acdbf14ae1c..33452884b96e 100644 --- a/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt +++ b/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt @@ -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 frontend and backend + * bus: the backend interface clock + * ram: the backend DRAM clock + - clock-names: the clock names mentioned above + - resets: phandles to the reset controllers driving the backend + +- 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 +183,13 @@ 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. + pipeline entry point. For SoCs with original DE (currently + all SoCs supported by display engine except V3s), this + phandle should be a display frontend; for SoCs with DE2, + this phandle should be a mixer.
Example: