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-cpha: true
  37
  38   spi-cpol: true
  39
  40   spi-max-frequency:
  41     description: inherited as a SPI client node, the datasheet specifies
  42       maximum 300 ns minimum cycle which gives around 3 MHz max frequency
  43     maximum: 3000000
  44
  45   port: true
  46
  47 required:
  48   - compatible
  49   - reg
  50   - spi-cpha
  51   - spi-cpol
  52   - port
  53
  54 additionalProperties: false
  55
  56 examples:
  57   - |
  58     #include <dt-bindings/gpio/gpio.h>
  59
  60     spi {
  61       compatible = "spi-gpio";
  62       sck-gpios = <&gpio 0 GPIO_ACTIVE_HIGH>;
  63       miso-gpios = <&gpio 1 GPIO_ACTIVE_HIGH>;
  64       mosi-gpios = <&gpio 2 GPIO_ACTIVE_HIGH>;
  65       cs-gpios = <&gpio 3 GPIO_ACTIVE_HIGH>;
  66       num-chipselects = <1>;
  67       #address-cells = <1>;
  68       #size-cells = <0>;
  69       panel@0 {
  70         compatible = "samsung,lms397kf04";
  71         spi-max-frequency = <3000000>;
  72         spi-cpha;
  73         spi-cpol;
  74         reg = <0>;
  75         vci-supply = <&lcd_3v0_reg>;
  76         vccio-supply = <&lcd_1v8_reg>;
  77         reset-gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
  78         backlight = <&ktd259>;
  79
  80         port {
  81           panel_in: endpoint {
  82             remote-endpoint = <&display_out>;
  83           };
  84         };
  85       };
  86     };
  87
  88 ...