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The purpose of common schemas, like panel-common.yaml, is to list applicable properties. It can list common ABI, e.g. "label" property, and pure hardware related properties like power supply or GPIOs. In the second case it means that all panels have these supplies or GPIOs. This is the only meaning when hardware property is allowed in common schema, because bindings are precise and we do not define common schemas for "possible" hardware configurations. Following this, all panel bindings which reference common schema and use "unevaluatedProperties: false" do not need to list these common parts. Simplify such bindings to also reduce copy-paste code and review time for new contributions. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20260306-dt-bindings-display-panel-clean-v1-3-3086eda1efaf@oss.qualcomm.com
139 lines
3.3 KiB
YAML
139 lines
3.3 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/display/panel/sitronix,st7701.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Sitronix ST7701 based LCD panels
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maintainers:
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- Jagan Teki <jagan@amarulasolutions.com>
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description: |
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ST7701 designed for small and medium sizes of TFT LCD display, is
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capable of supporting up to 480RGBX864 in resolution. It provides
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several system interfaces like MIPI/RGB/SPI.
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Techstar TS8550B is 480x854, 2-lane MIPI DSI LCD panel which has
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inbuilt ST7701 chip.
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Densitron DMT028VGHMCMI-1A is 480x640, 2-lane MIPI DSI LCD panel
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which has built-in ST7701 chip.
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properties:
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compatible:
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items:
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- enum:
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- anbernic,rg-arc-panel
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- anbernic,rg28xx-panel
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- densitron,dmt028vghmcmi-1a
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- elida,kd50t048a
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- techstar,ts8550b
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- winstar,wf40eswaa6mnn0
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- const: sitronix,st7701
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reg:
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description: DSI / SPI channel used by that screen
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maxItems: 1
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VCC-supply:
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description: analog regulator for MIPI circuit
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IOVCC-supply:
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description: I/O system regulator
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dc-gpios:
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maxItems: 1
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description:
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Controller data/command selection (D/CX) in 4-line SPI mode.
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If not set, the controller is in 3-line SPI mode.
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Disallowed for DSI.
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required:
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- compatible
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- reg
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- VCC-supply
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- IOVCC-supply
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- port
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- reset-gpios
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allOf:
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- $ref: panel-common.yaml#
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- if:
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properties:
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compatible:
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contains:
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# SPI connected panels
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enum:
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- anbernic,rg28xx-panel
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then:
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$ref: /schemas/spi/spi-peripheral-props.yaml#
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- if:
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properties:
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compatible:
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not:
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contains:
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# DSI or SPI without D/CX pin
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enum:
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- anbernic,rg-arc-panel
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- anbernic,rg28xx-panel
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- densitron,dmt028vghmcmi-1a
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- elida,kd50t048a
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- techstar,ts8550b
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then:
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required:
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- dc-gpios
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else:
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properties:
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dc-gpios: false
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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dsi {
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#address-cells = <1>;
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#size-cells = <0>;
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panel@0 {
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compatible = "techstar,ts8550b", "sitronix,st7701";
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reg = <0>;
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VCC-supply = <®_dldo2>;
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IOVCC-supply = <®_dldo2>;
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reset-gpios = <&pio 3 24 GPIO_ACTIVE_HIGH>; /* LCD-RST: PD24 */
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backlight = <&backlight>;
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port {
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mipi_in_panel: endpoint {
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remote-endpoint = <&mipi_out_panel>;
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};
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};
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};
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};
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- |
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#include <dt-bindings/gpio/gpio.h>
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spi {
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#address-cells = <1>;
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#size-cells = <0>;
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panel@0 {
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compatible = "anbernic,rg28xx-panel", "sitronix,st7701";
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reg = <0>;
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spi-max-frequency = <3125000>;
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VCC-supply = <®_lcd>;
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IOVCC-supply = <®_lcd>;
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reset-gpios = <&pio 8 14 GPIO_ACTIVE_HIGH>; /* LCD-RST: PI14 */
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backlight = <&backlight>;
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port {
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panel_in_rgb: endpoint {
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remote-endpoint = <&tcon_lcd0_out_lcd>;
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};
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};
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};
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};
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