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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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9fa6bcf23e
DSI-attached devices could respond to more than one virtual channel number, thus their bindings are supposed to constrain the 'reg' property to match hardware. Add missing 'reg' constrain for DSI-attached display panels, based on DTS sources in Linux kernel (assume all devices take only one channel number). Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Acked-by: Conor Dooley <conor.dooley@microchip.com> Link: https://lore.kernel.org/r/20240509-dt-bindings-dsi-panel-reg-v1-3-8b2443705be0@linaro.org Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
95 lines
2.4 KiB
YAML
95 lines
2.4 KiB
YAML
# SPDX-License-Identifier: GPL-2.0
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/display/panel/sharp,lq101r1sx01.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Sharp Microelectronics 10.1" WQXGA TFT LCD panel
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maintainers:
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- Thierry Reding <treding@nvidia.com>
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description: |
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This panel requires a dual-channel DSI host to operate. It supports two modes:
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- left-right: each channel drives the left or right half of the screen
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- even-odd: each channel drives the even or odd lines of the screen
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Each of the DSI channels controls a separate DSI peripheral. The peripheral
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driven by the first link (DSI-LINK1), left or even, is considered the primary
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peripheral and controls the device. The 'link2' property contains a phandle
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to the peripheral driven by the second link (DSI-LINK2, right or odd).
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Note that in video mode the DSI-LINK1 interface always provides the left/even
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pixels and DSI-LINK2 always provides the right/odd pixels. In command mode it
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is possible to program either link to drive the left/even or right/odd pixels
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but for the sake of consistency this binding assumes that the same assignment
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is chosen as for video mode.
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allOf:
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- $ref: panel-common.yaml#
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properties:
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compatible:
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oneOf:
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- items:
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- const: sharp,lq101r1sx03
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- const: sharp,lq101r1sx01
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- enum:
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- sharp,lq101r1sx01
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reg:
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maxItems: 1
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power-supply: true
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backlight: true
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link2:
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$ref: /schemas/types.yaml#/definitions/phandle
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description: |
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phandle to the DSI peripheral on the secondary link. Note that the
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presence of this property marks the containing node as DSI-LINK1
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required:
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- compatible
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- reg
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if:
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required:
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- link2
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then:
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required:
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- power-supply
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additionalProperties: false
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examples:
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- |
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dsi0: dsi@fd922800 {
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#address-cells = <1>;
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#size-cells = <0>;
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reg = <0xfd922800 0x200>;
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panel: panel@0 {
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compatible = "sharp,lq101r1sx01";
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reg = <0>;
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link2 = <&secondary>;
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power-supply = <&power>;
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backlight = <&backlight>;
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};
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};
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dsi1: dsi@fd922a00 {
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#address-cells = <1>;
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#size-cells = <0>;
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reg = <0xfd922a00 0x200>;
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secondary: panel@0 {
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compatible = "sharp,lq101r1sx01";
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reg = <0>;
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};
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};
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...
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