1Samsung LD9040 AMOLED LCD parallel RGB panel with SPI control bus
2
3Required properties:
4  - compatible: "samsung,ld9040"
5  - reg: address of the panel on SPI bus
6  - vdd3-supply: core voltage supply
7  - vci-supply: voltage supply for analog circuits
8  - reset-gpios: a GPIO spec for the reset pin
9  - display-timings: timings for the connected panel according to [1]
10
11The panel must obey rules for SPI slave device specified in document [2].
12
13Optional properties:
14  - power-on-delay: delay after turning regulators on [ms]
15  - reset-delay: delay after reset sequence [ms]
16  - panel-width-mm: physical panel width [mm]
17  - panel-height-mm: physical panel height [mm]
18
19The device node can contain one 'port' child node with one child
20'endpoint' node, according to the bindings defined in [3]. This
21node should describe panel's video bus.
22
23[1]: Documentation/devicetree/bindings/video/display-timing.txt
24[2]: Documentation/devicetree/bindings/spi/spi-bus.txt
25[3]: Documentation/devicetree/bindings/media/video-interfaces.txt
26
27Example:
28
29	lcd@0 {
30		compatible = "samsung,ld9040";
31		reg = <0>;
32		vdd3-supply = <&ldo7_reg>;
33		vci-supply = <&ldo17_reg>;
34		reset-gpios = <&gpy4 5 0>;
35		spi-max-frequency = <1200000>;
36		spi-cpol;
37		spi-cpha;
38		power-on-delay = <10>;
39		reset-delay = <10>;
40		panel-width-mm = <90>;
41		panel-height-mm = <154>;
42
43		display-timings {
44			timing {
45				clock-frequency = <23492370>;
46				hactive = <480>;
47				vactive = <800>;
48				hback-porch = <16>;
49				hfront-porch = <16>;
50				vback-porch = <2>;
51				vfront-porch = <28>;
52				hsync-len = <2>;
53				vsync-len = <1>;
54				hsync-active = <0>;
55				vsync-active = <0>;
56				de-active = <0>;
57				pixelclk-active = <0>;
58			};
59		};
60
61		port {
62			lcd_ep: endpoint {
63				remote-endpoint = <&fimd_dpi_ep>;
64			};
65		};
66	};
67