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Commit 88072c39 authored by Andrzej Hajda's avatar Andrzej Hajda Committed by Inki Dae
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panel/ld9040: add DT bindings 



The patch adds bindings for ld9040 panel.
Bindings describe panel resources, boot delays,
display timings and physical size.

Signed-off-by: default avatarAndrzej Hajda <a.hajda@samsung.com>
Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
parent 86f05ae8

Documentation/devicetree/bindings/panel/samsung,ld9040.txt

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Samsung LD9040 AMOLED LCD parallel RGB panel with SPI control bus



Required properties:

  - compatible: "samsung,ld9040"

  - reg: address of the panel on SPI bus

  - vdd3-supply: core voltage supply

  - vci-supply: voltage supply for analog circuits

  - reset-gpios: a GPIO spec for the reset pin

  - display-timings: timings for the connected panel according to [1]



The panel must obey rules for SPI slave device specified in document [2].



Optional properties:

  - power-on-delay: delay after turning regulators on [ms]

  - reset-delay: delay after reset sequence [ms]

  - panel-width-mm: physical panel width [mm]

  - panel-height-mm: physical panel height [mm]



The device node can contain one 'port' child node with one child

'endpoint' node, according to the bindings defined in [3]. This

node should describe panel's video bus.



[1]: Documentation/devicetree/bindings/video/display-timing.txt

[2]: Documentation/devicetree/bindings/spi/spi-bus.txt

[3]: Documentation/devicetree/bindings/media/video-interfaces.txt



Example:



	lcd@0 {

		compatible = "samsung,ld9040";

		reg = <0>;

		vdd3-supply = <&ldo7_reg>;

		vci-supply = <&ldo17_reg>;

		reset-gpios = <&gpy4 5 0>;

		spi-max-frequency = <1200000>;

		spi-cpol;

		spi-cpha;

		power-on-delay = <10>;

		reset-delay = <10>;

		panel-width-mm = <90>;

		panel-height-mm = <154>;



		display-timings {

			timing {

				clock-frequency = <23492370>;

				hactive = <480>;

				vactive = <800>;

				hback-porch = <16>;

				hfront-porch = <16>;

				vback-porch = <2>;

				vfront-porch = <28>;

				hsync-len = <2>;

				vsync-len = <1>;

				hsync-active = <0>;

				vsync-active = <0>;

				de-active = <0>;

				pixelclk-active = <0>;

			};

		};



		port {

			lcd_ep: endpoint {

				remote-endpoint = <&fimd_dpi_ep>;

			};

		};

	};