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
  18 properties:
  19   compatible:
  20     const: samsung,lms397kf04
  21
  22   reg: true
  23
  24   reset-gpios: true
  25
  26   vci-supply:
  27     description: regulator that supplies the VCI analog voltage
  28       usually around 3.0 V
  29
  30   vccio-supply:
  31     description: regulator that supplies the VCCIO voltage usually
  32       around 1.8 V
  33
  34   backlight: true
  35
  36   spi-max-frequency:
  37     $ref: /schemas/types.yaml#/definitions/uint32
  38     description: inherited as a SPI client node, the datasheet specifies
  39       maximum 300 ns minimum cycle which gives around 3 MHz max frequency
  40     maximum: 3000000
  41
  42   port: true
  43
  44 required:
  45   - compatible
  46   - reg
  47
  48 additionalProperties: false
  49
  50 examples:
  51   - |
  52     #include <dt-bindings/gpio/gpio.h>
  53
  54     spi {
  55       #address-cells = <1>;
  56       #size-cells = <0>;
  57       panel@0 {
  58         compatible = "samsung,lms397kf04";
  59         spi-max-frequency = <3000000>;
  60         reg = <0>;
  61         vci-supply = <&lcd_3v0_reg>;
  62         vccio-supply = <&lcd_1v8_reg>;
  63         reset-gpios = <&gpio 1 GPIO_ACTIVE_LOW>;
  64         backlight = <&ktd259>;
  65
  66         port {
  67           panel_in: endpoint {
  68             remote-endpoint = <&display_out>;
  69           };
  70         };
  71       };
  72     };
  73
  74 ...