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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
# Copyright 2019 BayLibre, SAS
%YAML 1.2
---
$id: http://devicetree.org/schemas/soc/amlogic/amlogic,canvas.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Amlogic Canvas Video Lookup Table
maintainers:
- Neil Armstrong <neil.armstrong@linaro.org>
- Maxime Jourdan <mjourdan@baylibre.com>
description: |
A canvas is a collection of metadata that describes a pixel buffer.
Those metadata include: width, height, phyaddr, wrapping and block mode.
Starting with GXBB the endianness can also be described.
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.
properties:
compatible:
oneOf:
- items:
- enum:
- amlogic,meson8-canvas
- amlogic,meson8b-canvas
- amlogic,meson8m2-canvas
- const: amlogic,canvas
- const: amlogic,canvas # GXBB and newer SoCs
reg:
maxItems: 1
required:
- compatible
- reg
additionalProperties: false
examples:
- |
canvas: video-lut@48 {
compatible = "amlogic,canvas";
reg = <0x48 0x14>;
};
|
