Documentation/devicetree/bindings/display/panel/samsung,lms397kf04.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/display/panel/samsung,lms397kf04.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Samsung LMS397KF04 display panel
   8
   9 description: The datasheet claims this is based around a display controller
  10   named DB7430 with a separate backlight controller.
  11
  12 maintainers:
  13   - Linus Walleij <linus.walleij@linaro.org>
  14
  15 allOf:
  16   - $ref: panel-common.yaml#
  17   - $ref: /schemas/spi/spi-peripheral-props.yaml#
  18
  19 properties:
  20   compatible:
  21     const: samsung,lms397kf04
  22
  23   reg: true
  24
  25   reset-gpios: true
  26
  27   vci-supply:
  28     description: regulator that supplies the VCI analog voltage
  29       usually around 3.0 V
  30
  31   vccio-supply:
  32     description: regulator that supplies the VCCIO voltage usually
  33       around 1.8 V
  34
  35   backlight: true
  36
  37   spi-cpha: true
  38
  39   spi-cpol: true
  40
  41   spi-max-frequency:
  42     description: inherited as a SPI client node, the datasheet specifies
  43       maximum 300 ns minimum cycle which gives around 3 MHz max frequency
  44     maximum: 3000000
  45
  46   port: true
  47
  48 required:
  49   - compatible
  50   - reg
  51   - spi-cpha
  52   - spi-cpol
  53   - port
  54
  55 unevaluatedProperties: false
  56
  57 examples:
  58   - |
  59     #include <dt-bindings/gpio/gpio.h>
  60
  61     spi {
  62       compatible = "spi-gpio";
  63       sck-gpios = <&gpio 0 GPIO_ACTIVE_HIGH>;
  64       miso-gpios = <&gpio 1 GPIO_ACTIVE_HIGH>;
  65       mosi-gpios = <&gpio 2 GPIO_ACTIVE_HIGH>;
  66       cs-gpios = <&gpio 3 GPIO_ACTIVE_HIGH>;
  67       num-chipselects = <1>;
  68       #address-cells = <1>;
  69       #size-cells = <0>;
  70       panel@0 {
  71         compatible = "samsung,lms397kf04";
  72         spi-max-frequency = <3000000>;
  73         spi-cpha;
  74         spi-cpol;
  75         reg = <0>;
  76         vci-supply = <&lcd_3v0_reg>;
  77         vccio-supply = <&lcd_1v8_reg>;
  78         reset-gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
  79         backlight = <&ktd259>;
  80
  81         port {
  82           panel_in: endpoint {
  83             remote-endpoint = <&display_out>;
  84           };
  85         };
  86       };
  87     };
  88
  89 ...