| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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 | ... |