hlcdc-dc.txt

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    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         };

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sys/contrib/device-tree/Bindings/display/atmel/hlcdc-dc.txt