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authorChen-Yu Tsai <wens@csie.org>2018-03-15 19:41:30 +0800
committerMaxime Ripard <maxime.ripard@bootlin.com>2018-03-19 15:37:15 +0100
commit74cf5cb58260b94156b3e74dc6e5f12a525f4654 (patch)
treeebd81dc2b27a8c7952b89a3c37f19c6696ddfe91
parent3041228e0224a7ff69c575d9696319bbb40ef414 (diff)
drm/sun4i: Add DT binding for Detail Enhancement Unit in Allwinner A80 SoC
The display pipeline on the A80 SoC has what is called the Detail Enhancement Unit, or DEU for short, block in between the display frontend and backend. This unit can sharpen images in both luma and chroma channels. It seems to also do colorspace conversion. This patch adds the device tree binding for this hardware block. Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180315114136.24747-3-wens@csie.org
-rw-r--r--Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt22
1 files changed, 22 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt b/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
index c05cbcdde4d7..671d75c76ad0 100644
--- a/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
+++ b/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
@@ -248,6 +248,28 @@ On the A33, some additional properties are required:
- resets and reset-names need to have a phandle to the SAT bus
resets, whose name will be "sat"
+DEU
+---
+
+The DEU (Detail Enhancement Unit), found in the Allwinner A80 SoC,
+can sharpen the display content in both luma and chroma channels.
+
+Required properties:
+ - compatible: value must be one of:
+ * allwinner,sun9i-a80-deu
+ - reg: base address and size of the memory-mapped region.
+ - interrupts: interrupt associated to this IP
+ - clocks: phandles to the clocks feeding the DEU
+ * ahb: the DEU interface clock
+ * mod: the DEU module clock
+ * ram: the DEU DRAM clock
+ - clock-names: the clock names mentioned above
+ - resets: phandles to the reset line driving the DEU
+
+- 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 outputs
+
Display Engine Frontend
-----------------------