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