Device-Tree bindings for Atmel's HLCDC (High LCD Controller) DRM driver
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The Atmel HLCDC Display Controller is subdevice of the HLCDC MFD device.
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See ../../mfd/atmel-hlcdc.txt for more details.
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Required properties:
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- compatible: value should be "atmel,hlcdc-display-controller"
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- pinctrl-names: the pin control state names. Should contain "default".
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- pinctrl-0: should contain the default pinctrl states.
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- #address-cells: should be set to 1.
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- #size-cells: should be set to 0.
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Required children nodes:
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Children nodes are encoding available output ports and their connections
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to external devices using the OF graph reprensentation (see ../graph.txt).
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At least one port node is required.
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Optional properties in grandchild nodes:
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Any endpoint grandchild node may specify a desired video interface
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according to ../../media/video-interfaces.txt, specifically
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- bus-width: recognized values are <12>, <16>, <18> and <24>, and
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override any output mode selection heuristic, forcing "rgb444",
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"rgb565", "rgb666" and "rgb888" respectively.
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Example:
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hlcdc: hlcdc@f0030000 {
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compatible = "atmel,sama5d3-hlcdc";
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reg = <0xf0030000 0x2000>;
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interrupts = <36 IRQ_TYPE_LEVEL_HIGH 0>;
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clocks = <&lcdc_clk>, <&lcdck>, <&clk32k>;
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clock-names = "periph_clk","sys_clk", "slow_clk";
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hlcdc-display-controller {
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compatible = "atmel,hlcdc-display-controller";
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_lcd_base &pinctrl_lcd_rgb888>;
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#address-cells = <1>;
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#size-cells = <0>;
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port@0 {
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#address-cells = <1>;
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#size-cells = <0>;
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reg = <0>;
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hlcdc_panel_output: endpoint@0 {
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reg = <0>;
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remote-endpoint = <&panel_input>;
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};
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};
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};
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hlcdc_pwm: hlcdc-pwm {
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compatible = "atmel,hlcdc-pwm";
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_lcd_pwm>;
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#pwm-cells = <3>;
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};
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};
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Example 2: With a video interface override to force rgb565; as above
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but with these changes/additions:
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&hlcdc {
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hlcdc-display-controller {
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_lcd_base &pinctrl_lcd_rgb565>;
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port@0 {
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hlcdc_panel_output: endpoint@0 {
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bus-width = <16>;
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};
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};
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};
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};
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