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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/display/panel/samsung,lms397kf04.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Samsung LMS397KF04 display panel
description: The datasheet claims this is based around a display controller
named DB7430 with a separate backlight controller.
maintainers:
- Linus Walleij <linus.walleij@linaro.org>
allOf:
- $ref: panel-common.yaml#
- $ref: /schemas/spi/spi-peripheral-props.yaml#
properties:
compatible:
const: samsung,lms397kf04
reg: true
reset-gpios: true
vci-supply:
description: regulator that supplies the VCI analog voltage
usually around 3.0 V
vccio-supply:
description: regulator that supplies the VCCIO voltage usually
around 1.8 V
backlight: true
spi-cpha: true
spi-cpol: true
spi-max-frequency:
description: inherited as a SPI client node, the datasheet specifies
maximum 300 ns minimum cycle which gives around 3 MHz max frequency
maximum: 3000000
port: true
required:
- compatible
- reg
- spi-cpha
- spi-cpol
- port
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
spi {
compatible = "spi-gpio";
sck-gpios = <&gpio 0 GPIO_ACTIVE_HIGH>;
miso-gpios = <&gpio 1 GPIO_ACTIVE_HIGH>;
mosi-gpios = <&gpio 2 GPIO_ACTIVE_HIGH>;
cs-gpios = <&gpio 3 GPIO_ACTIVE_HIGH>;
num-chipselects = <1>;
#address-cells = <1>;
#size-cells = <0>;
panel@0 {
compatible = "samsung,lms397kf04";
spi-max-frequency = <3000000>;
spi-cpha;
spi-cpol;
reg = <0>;
vci-supply = <&lcd_3v0_reg>;
vccio-supply = <&lcd_1v8_reg>;
reset-gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
backlight = <&ktd259>;
port {
panel_in: endpoint {
remote-endpoint = <&display_out>;
};
};
};
};
...
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