Documentation/devicetree/bindings/display/panel/samsung,ld9040.yaml

   1 # SPDX-License-Identifier: GPL-2.0
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/display/panel/samsung,ld9040.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Samsung LD9040 AMOLED LCD parallel RGB panel with SPI control bus
   8
   9 description: |
  10   The panel must obey the rules for a SPI slave device as specified in
  11   spi/spi-controller.yaml
  12
  13 maintainers:
  14   - Andrzej Hajda <a.hajda@samsung.com>
  15
  16 allOf:
  17   - $ref: panel-common.yaml#
  18
  19 properties:
  20   compatible:
  21     const: samsung,ld9040
  22
  23   display-timings: true
  24   port: true
  25   reg: true
  26   reset-gpios: true
  27
  28   vdd3-supply:
  29     description: core voltage supply
  30
  31   vci-supply:
  32     description: voltage supply for analog circuits
  33
  34   power-on-delay:
  35     $ref: /schemas/types.yaml#/definitions/uint32
  36     description: delay after turning regulators on [ms]
  37
  38   reset-delay:
  39     $ref: /schemas/types.yaml#/definitions/uint32
  40     description: delay after reset sequence [ms]
  41
  42   panel-width-mm:
  43     description: physical panel width [mm]
  44
  45   panel-height-mm:
  46     description: physical panel height [mm]
  47
  48 required:
  49   - compatible
  50   - reg
  51   - vdd3-supply
  52   - vci-supply
  53   - reset-gpios
  54   - display-timings
  55
  56 unevaluatedProperties: false
  57
  58 examples:
  59   - |
  60     spi {
  61         #address-cells = <1>;
  62         #size-cells = <0>;
  63
  64         lcd@0 {
  65             compatible = "samsung,ld9040";
  66             #address-cells = <1>;
  67             #size-cells = <0>;
  68
  69             reg = <0>;
  70             vdd3-supply = <&ldo7_reg>;
  71             vci-supply = <&ldo17_reg>;
  72             reset-gpios = <&gpy4 5 0>;
  73             spi-max-frequency = <1200000>;
  74             spi-cpol;
  75             spi-cpha;
  76             power-on-delay = <10>;
  77             reset-delay = <10>;
  78             panel-width-mm = <90>;
  79             panel-height-mm = <154>;
  80
  81             display-timings {
  82                 timing {
  83                     clock-frequency = <23492370>;
  84                     hactive = <480>;
  85                     vactive = <800>;
  86                     hback-porch = <16>;
  87                     hfront-porch = <16>;
  88                     vback-porch = <2>;
  89                     vfront-porch = <28>;
  90                     hsync-len = <2>;
  91                     vsync-len = <1>;
  92                     hsync-active = <0>;
  93                     vsync-active = <0>;
  94                     de-active = <0>;
  95                     pixelclk-active = <0>;
  96                 };
  97             };
  98
  99             port {
 100                 lcd_ep: endpoint {
 101                     remote-endpoint = <&fimd_dpi_ep>;
 102                 };
 103             };
 104         };
 105     };
 106
 107 ...