DT bindings doc for amlogic,meson-canvas
Reviewed-by: Jerome Brunet <jbrunet@xxxxxxxxxxxx>
Signed-off-by: Maxime Jourdan <mjourdan@xxxxxxxxxxxx>
---
.../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
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+++ b/Documentation/devicetree/bindings/soc/amlogic/amlogic,canvas.txt
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+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>;
+};
--
2.18.0
