1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/display/panel/display-timings.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: display timings
8
9 maintainers:
10 - Thierry Reding <thierry.reding@gmail.com>
11 - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
12 - Sam Ravnborg <sam@ravnborg.org>
13
14 description: |
15 A display panel may be able to handle several display timings,
16 with different resolutions.
17 The display-timings node makes it possible to specify the timings
18 and to specify the timing that is native for the display.
19
20 properties:
21 $nodename:
22 const: display-timings
23
24 native-mode:
25 $ref: /schemas/types.yaml#/definitions/phandle
26 description: |
27 The default display timing is the one specified as native-mode.
28 If no native-mode is specified then the first node is assumed
29 to be the native mode.
30
31 patternProperties:
32 "^timing":
33 type: object
34 $ref: panel-timing.yaml#
35
36 additionalProperties: false
37
38 examples:
39 - |+
40
41 /*
42 * Example that specifies panel timing using minimum, typical,
43 * maximum values as commonly used in datasheet description.
44 * timing1 is the native-mode.
45 */
46 display-timings {
47 native-mode = <&timing1>;
48 timing0 {
49 /* 1920x1080p24 */
50 clock-frequency = <148500000>;
51 hactive = <1920>;
52 vactive = <1080>;
53 hsync-len = <0 44 60>;
54 hfront-porch = <80 88 95>;
55 hback-porch = <100 148 160>;
56 vfront-porch = <0 4 6>;
57 vback-porch = <0 36 50>;
58 vsync-len = <0 5 6>;
59 };
60 timing1 {
61 /* 1920x1080p24 */
62 clock-frequency = <52000000>;
63 hactive = <1920>;
64 vactive = <1080>;
65 hfront-porch = <25>;
66 hback-porch = <25>;
67 hsync-len = <0 25 25>;
68 vback-porch = <2>;
69 vfront-porch = <2>;
70 vsync-len = <2>;
71 hsync-active = <1>;
72 pixelclk-active = <1>;
73 };
74 };
75
76 ...
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