amlogic,canvas.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
    2 # Copyright 2019 BayLibre, SAS
    3 %YAML 1.2
    4 ---
    5 $id: "http://devicetree.org/schemas/soc/amlogic/amlogic,canvas.yaml#"
    6 $schema: "http://devicetree.org/meta-schemas/core.yaml#"
    7 
    8 title: Amlogic Canvas Video Lookup Table
    9 
   10 maintainers:
   11   - Neil Armstrong <neil.armstrong@linaro.org>
   12   - Maxime Jourdan <mjourdan@baylibre.com>
   13 
   14 description: |
   15   A canvas is a collection of metadata that describes a pixel buffer.
   16   Those metadata include: width, height, phyaddr, wrapping and block mode.
   17   Starting with GXBB the endianness can also be described.
   18 
   19   Many IPs within Amlogic SoCs rely on canvas indexes to read/write pixel data
   20   rather than use the phy addresses directly. For instance, this is the case for
   21   the video decoders and the display.
   22 
   23   Amlogic SoCs have 256 canvas.
   24 
   25 properties:
   26   compatible:
   27     oneOf:
   28       - items:
   29           - enum:
   30               - amlogic,meson8-canvas
   31               - amlogic,meson8b-canvas
   32               - amlogic,meson8m2-canvas
   33           - const: amlogic,canvas
   34       - const: amlogic,canvas # GXBB and newer SoCs
   35 
   36   reg:
   37     maxItems: 1
   38 
   39 required:
   40   - compatible
   41   - reg
   42 
   43 additionalProperties: false
   44 
   45 examples:
   46   - |
   47     canvas: video-lut@48 {
   48         compatible = "amlogic,canvas";
   49         reg = <0x48 0x14>;
   50     };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/soc/amlogic/amlogic,canvas.yaml

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sys/contrib/device-tree/Bindings/soc/amlogic/amlogic,canvas.yaml