mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
113 lines
3.5 KiB
113 lines
3.5 KiB
# SPDX-License-Identifier: GPL-2.0 |
|
%YAML 1.2 |
|
--- |
|
$id: http://devicetree.org/schemas/display/allwinner,sun4i-a10-display-engine.yaml# |
|
$schema: http://devicetree.org/meta-schemas/core.yaml# |
|
|
|
title: Allwinner A10 Display Engine Pipeline Device Tree Bindings |
|
|
|
maintainers: |
|
- Chen-Yu Tsai <[email protected]> |
|
- Maxime Ripard <[email protected]> |
|
|
|
description: | |
|
The display engine pipeline (and its entry point, since it can be |
|
either directly the backend or the frontend) is represented as an |
|
extra node. |
|
|
|
The Allwinner A10 Display pipeline is composed of several components |
|
that are going to be documented below: |
|
|
|
For all connections between components up to the TCONs in the |
|
display pipeline, when there are multiple components of the same |
|
type at the same depth, the local endpoint ID must be the same as |
|
the remote component's index. For example, if the remote endpoint is |
|
Frontend 1, then the local endpoint ID must be 1. |
|
|
|
Frontend 0 [0] ------- [0] Backend 0 [0] ------- [0] TCON 0 |
|
[1] -- -- [1] [1] -- -- [1] |
|
\ / \ / |
|
X X |
|
/ \ / \ |
|
[0] -- -- [0] [0] -- -- [0] |
|
Frontend 1 [1] ------- [1] Backend 1 [1] ------- [1] TCON 1 |
|
|
|
For a two pipeline system such as the one depicted above, the lines |
|
represent the connections between the components, while the numbers |
|
within the square brackets corresponds to the ID of the local endpoint. |
|
|
|
The same rule also applies to DE 2.0 mixer-TCON connections: |
|
|
|
Mixer 0 [0] ----------- [0] TCON 0 |
|
[1] ---- ---- [1] |
|
\ / |
|
X |
|
/ \ |
|
[0] ---- ---- [0] |
|
Mixer 1 [1] ----------- [1] TCON 1 |
|
|
|
properties: |
|
compatible: |
|
enum: |
|
- allwinner,sun4i-a10-display-engine |
|
- allwinner,sun5i-a10s-display-engine |
|
- allwinner,sun5i-a13-display-engine |
|
- allwinner,sun6i-a31-display-engine |
|
- allwinner,sun6i-a31s-display-engine |
|
- allwinner,sun7i-a20-display-engine |
|
- allwinner,sun8i-a23-display-engine |
|
- allwinner,sun8i-a33-display-engine |
|
- allwinner,sun8i-a83t-display-engine |
|
- allwinner,sun8i-h3-display-engine |
|
- allwinner,sun8i-r40-display-engine |
|
- allwinner,sun8i-v3s-display-engine |
|
- allwinner,sun9i-a80-display-engine |
|
- allwinner,sun50i-a64-display-engine |
|
- allwinner,sun50i-h6-display-engine |
|
|
|
allwinner,pipelines: |
|
$ref: /schemas/types.yaml#/definitions/phandle-array |
|
minItems: 1 |
|
maxItems: 2 |
|
description: | |
|
Available display engine frontends (DE 1.0) or mixers (DE |
|
2.0/3.0) available. |
|
|
|
required: |
|
- compatible |
|
- allwinner,pipelines |
|
|
|
additionalProperties: false |
|
|
|
if: |
|
properties: |
|
compatible: |
|
contains: |
|
enum: |
|
- allwinner,sun4i-a10-display-engine |
|
- allwinner,sun6i-a31-display-engine |
|
- allwinner,sun6i-a31s-display-engine |
|
- allwinner,sun7i-a20-display-engine |
|
- allwinner,sun8i-a83t-display-engine |
|
- allwinner,sun8i-r40-display-engine |
|
- allwinner,sun9i-a80-display-engine |
|
- allwinner,sun50i-a64-display-engine |
|
|
|
then: |
|
properties: |
|
allwinner,pipelines: |
|
minItems: 2 |
|
|
|
else: |
|
properties: |
|
allwinner,pipelines: |
|
maxItems: 1 |
|
|
|
examples: |
|
- | |
|
de: display-engine { |
|
compatible = "allwinner,sun4i-a10-display-engine"; |
|
allwinner,pipelines = <&fe0>, <&fe1>; |
|
}; |
|
|
|
...
|
|
|