From 5516803d48ed946320aba48fdf45bad383252891 Mon Sep 17 00:00:00 2001 From: Maxime Jourdan Date: Thu, 23 Aug 2018 13:49:52 +0200 Subject: [PATCH] dt-bindings: soc: amlogic: add meson-canvas documentation DT bindings doc for amlogic,meson-canvas Reviewed-by: Jerome Brunet Signed-off-by: Maxime Jourdan Reviewed-by: Rob Herring Signed-off-by: Kevin Hilman --- .../bindings/soc/amlogic/amlogic,canvas.txt | 29 +++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/amlogic/amlogic,canvas.txt diff --git a/Documentation/devicetree/bindings/soc/amlogic/amlogic,canvas.txt b/Documentation/devicetree/bindings/soc/amlogic/amlogic,canvas.txt new file mode 100644 index 000000000000..436d2106e80d --- /dev/null +++ b/Documentation/devicetree/bindings/soc/amlogic/amlogic,canvas.txt @@ -0,0 +1,29 @@ +Amlogic Canvas +================================ + +A canvas is a collection of metadata that describes a pixel buffer. +Those metadata include: width, height, phyaddr, wrapping, block mode +and endianness. + +Many IPs within Amlogic SoCs rely on canvas indexes to read/write pixel data +rather than use the phy addresses directly. For instance, this is the case for +the video decoders and the display. + +Amlogic SoCs have 256 canvas. + +Device Tree Bindings: +--------------------- + +Video Lookup Table +-------------------------- + +Required properties: +- compatible: "amlogic,canvas" +- reg: Base physical address and size of the canvas registers. + +Example: + +canvas: video-lut@48 { + compatible = "amlogic,canvas"; + reg = <0x0 0x48 0x0 0x14>; +};