dt-bindings: display: convert samsung,ld9040 to DT Schema
v2: - drop use of spi-slave.yaml (Maxime) - added unevaluatedProperties (Maxime) - added type to width/height properties (Rob) Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Reviewed-by: Rob Herring <robh@kernel.org> Cc: Maxime Ripard <mripard@kernel.org> Cc: Rob Herring <robh@kernel.org> Cc: Andrzej Hajda <a.hajda@samsung.com> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200408195109.32692-23-sam@ravnborg.org
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Sam Ravnborg
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Samsung LD9040 AMOLED LCD parallel RGB panel with SPI control bus
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Required properties:
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- compatible: "samsung,ld9040"
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- reg: address of the panel on SPI bus
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- vdd3-supply: core voltage supply
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- vci-supply: voltage supply for analog circuits
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- reset-gpios: a GPIO spec for the reset pin
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- display-timings: timings for the connected panel according to [1]
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The panel must obey rules for SPI slave device specified in document [2].
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Optional properties:
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- power-on-delay: delay after turning regulators on [ms]
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- reset-delay: delay after reset sequence [ms]
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- panel-width-mm: physical panel width [mm]
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- panel-height-mm: physical panel height [mm]
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The device node can contain one 'port' child node with one child
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'endpoint' node, according to the bindings defined in [3]. This
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node should describe panel's video bus.
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[1]: Documentation/devicetree/bindings/display/panel/display-timing.txt
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[2]: Documentation/devicetree/bindings/spi/spi-bus.txt
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[3]: Documentation/devicetree/bindings/media/video-interfaces.txt
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Example:
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lcd@0 {
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compatible = "samsung,ld9040";
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reg = <0>;
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vdd3-supply = <&ldo7_reg>;
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vci-supply = <&ldo17_reg>;
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reset-gpios = <&gpy4 5 0>;
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spi-max-frequency = <1200000>;
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spi-cpol;
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spi-cpha;
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power-on-delay = <10>;
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reset-delay = <10>;
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panel-width-mm = <90>;
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panel-height-mm = <154>;
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display-timings {
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timing {
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clock-frequency = <23492370>;
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hactive = <480>;
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vactive = <800>;
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hback-porch = <16>;
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hfront-porch = <16>;
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vback-porch = <2>;
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vfront-porch = <28>;
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hsync-len = <2>;
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vsync-len = <1>;
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hsync-active = <0>;
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vsync-active = <0>;
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de-active = <0>;
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pixelclk-active = <0>;
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};
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};
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port {
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lcd_ep: endpoint {
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remote-endpoint = <&fimd_dpi_ep>;
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};
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};
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};
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@ -0,0 +1,107 @@
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# SPDX-License-Identifier: GPL-2.0
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/display/panel/samsung,ld9040.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Samsung LD9040 AMOLED LCD parallel RGB panel with SPI control bus
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description: |
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The panel must obey the rules for a SPI slave device as specified in
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spi/spi-controller.yaml
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maintainers:
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- Andrzej Hajda <a.hajda@samsung.com>
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allOf:
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- $ref: panel-common.yaml#
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properties:
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compatible:
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const: samsung,ld9040
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display-timings: true
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port: true
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reg: true
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reset-gpios: true
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vdd3-supply:
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description: core voltage supply
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vci-supply:
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description: voltage supply for analog circuits
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power-on-delay:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: delay after turning regulators on [ms]
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reset-delay:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: delay after reset sequence [ms]
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panel-width-mm:
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description: physical panel width [mm]
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panel-height-mm:
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description: physical panel height [mm]
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required:
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- compatible
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- reg
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- vdd3-supply
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- vci-supply
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- reset-gpios
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- display-timings
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unevaluatedProperties: false
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examples:
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- |
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spi {
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#address-cells = <1>;
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#size-cells = <0>;
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lcd@0 {
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compatible = "samsung,ld9040";
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#address-cells = <1>;
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#size-cells = <0>;
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reg = <0>;
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vdd3-supply = <&ldo7_reg>;
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vci-supply = <&ldo17_reg>;
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reset-gpios = <&gpy4 5 0>;
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spi-max-frequency = <1200000>;
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spi-cpol;
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spi-cpha;
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power-on-delay = <10>;
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reset-delay = <10>;
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panel-width-mm = <90>;
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panel-height-mm = <154>;
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display-timings {
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timing {
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clock-frequency = <23492370>;
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hactive = <480>;
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vactive = <800>;
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hback-porch = <16>;
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hfront-porch = <16>;
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vback-porch = <2>;
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vfront-porch = <28>;
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hsync-len = <2>;
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vsync-len = <1>;
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hsync-active = <0>;
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vsync-active = <0>;
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de-active = <0>;
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pixelclk-active = <0>;
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};
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};
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port {
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lcd_ep: endpoint {
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remote-endpoint = <&fimd_dpi_ep>;
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};
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};
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};
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};
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...
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