Documentation/devicetree/bindings/display/atmel/hlcdc-dc.txt

   1 Device-Tree bindings for Atmel's HLCDC (High LCD Controller) DRM driver
   2
   3 The Atmel HLCDC Display Controller is subdevice of the HLCDC MFD device.
   4 See ../../mfd/atmel-hlcdc.txt for more details.
   5
   6 Required properties:
   7  - compatible: value should be "atmel,hlcdc-display-controller"
   8  - pinctrl-names: the pin control state names. Should contain "default".
   9  - pinctrl-0: should contain the default pinctrl states.
  10  - #address-cells: should be set to 1.
  11  - #size-cells: should be set to 0.
  12
  13 Required children nodes:
  14  Children nodes are encoding available output ports and their connections
  15  to external devices using the OF graph reprensentation (see ../graph.txt).
  16  At least one port node is required.
  17
  18 Optional properties in grandchild nodes:
  19  Any endpoint grandchild node may specify a desired video interface
  20  according to ../../media/video-interfaces.txt, specifically
  21  - bus-width: recognized values are <12>, <16>, <18> and <24>, and
  22    override any output mode selection heuristic, forcing "rgb444",
  23    "rgb565", "rgb666" and "rgb888" respectively.
  24
  25 Example:
  26
  27         hlcdc: hlcdc@f0030000 {
  28                 compatible = "atmel,sama5d3-hlcdc";
  29                 reg = <0xf0030000 0x2000>;
  30                 interrupts = <36 IRQ_TYPE_LEVEL_HIGH 0>;
  31                 clocks = <&lcdc_clk>, <&lcdck>, <&clk32k>;
  32                 clock-names = "periph_clk","sys_clk", "slow_clk";
  33
  34                 hlcdc-display-controller {
  35                         compatible = "atmel,hlcdc-display-controller";
  36                         pinctrl-names = "default";
  37                         pinctrl-0 = <&pinctrl_lcd_base &pinctrl_lcd_rgb888>;
  38                         #address-cells = <1>;
  39                         #size-cells = <0>;
  40
  41                         port@0 {
  42                                 #address-cells = <1>;
  43                                 #size-cells = <0>;
  44                                 reg = <0>;
  45
  46                                 hlcdc_panel_output: endpoint@0 {
  47                                         reg = <0>;
  48                                         remote-endpoint = <&panel_input>;
  49                                 };
  50                         };
  51                 };
  52
  53                 hlcdc_pwm: hlcdc-pwm {
  54                         compatible = "atmel,hlcdc-pwm";
  55                         pinctrl-names = "default";
  56                         pinctrl-0 = <&pinctrl_lcd_pwm>;
  57                         #pwm-cells = <3>;
  58                 };
  59         };
  60
  61 Example 2: With a video interface override to force rgb565; as above
  62 but with these changes/additions:
  63
  64         &hlcdc {
  65                 hlcdc-display-controller {
  66                         pinctrl-names = "default";
  67                         pinctrl-0 = <&pinctrl_lcd_base &pinctrl_lcd_rgb565>;
  68
  69                         port@0 {
  70                                 hlcdc_panel_output: endpoint@0 {
  71                                         bus-width = <16>;
  72                                 };
  73                         };
  74                 };
  75         };