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51 lines
1.3 KiB
51 lines
1.3 KiB
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
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# Copyright 2019 BayLibre, SAS |
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%YAML 1.2 |
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--- |
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$id: "http://devicetree.org/schemas/soc/amlogic/amlogic,canvas.yaml#" |
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$schema: "http://devicetree.org/meta-schemas/core.yaml#" |
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title: Amlogic Canvas Video Lookup Table |
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maintainers: |
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- Neil Armstrong <[email protected]> |
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- Maxime Jourdan <[email protected]> |
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description: | |
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A canvas is a collection of metadata that describes a pixel buffer. |
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Those metadata include: width, height, phyaddr, wrapping and block mode. |
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Starting with GXBB the endianness can also be described. |
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Many IPs within Amlogic SoCs rely on canvas indexes to read/write pixel data |
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rather than use the phy addresses directly. For instance, this is the case for |
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the video decoders and the display. |
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Amlogic SoCs have 256 canvas. |
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properties: |
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compatible: |
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oneOf: |
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- items: |
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- enum: |
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- amlogic,meson8-canvas |
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- amlogic,meson8b-canvas |
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- amlogic,meson8m2-canvas |
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- const: amlogic,canvas |
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- const: amlogic,canvas # GXBB and newer SoCs |
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reg: |
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maxItems: 1 |
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required: |
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- compatible |
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- reg |
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additionalProperties: false |
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examples: |
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- | |
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canvas: video-lut@48 { |
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compatible = "amlogic,canvas"; |
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reg = <0x48 0x14>; |
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}; |
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