1 # SPDX-License-Identifier: GPL-2.0
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/display/panel/samsung,ld9040.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Samsung LD9040 AMOLED LCD parallel RGB panel with SPI control bus
8
9 maintainers:
10 - Andrzej Hajda <a.hajda@samsung.com>
11
12 allOf:
13 - $ref: panel-common.yaml#
14 - $ref: /schemas/spi/spi-peripheral-props.yaml#
15
16 properties:
17 compatible:
18 const: samsung,ld9040
19
20 reg:
21 maxItems: 1
22
23 display-timings: true
24 port: true
25 reset-gpios: true
26
27 vdd3-supply:
28 description: core voltage supply
29
30 vci-supply:
31 description: voltage supply for analog circuits
32
33 power-on-delay:
34 $ref: /schemas/types.yaml#/definitions/uint32
35 description: delay after turning regulators on [ms]
36
37 reset-delay:
38 $ref: /schemas/types.yaml#/definitions/uint32
39 description: delay after reset sequence [ms]
40
41 panel-width-mm:
42 description: physical panel width [mm]
43
44 panel-height-mm:
45 description: physical panel height [mm]
46
47 spi-cpha: true
48 spi-cpol: true
49
50 required:
51 - compatible
52 - reg
53 - vdd3-supply
54 - vci-supply
55 - reset-gpios
56 - display-timings
57
58 unevaluatedProperties: false
59
60 examples:
61 - |
62 spi {
63 #address-cells = <1>;
64 #size-cells = <0>;
65
66 lcd@0 {
67 compatible = "samsung,ld9040";
68
69 reg = <0>;
70 vdd3-supply = <&ldo7_reg>;
71 vci-supply = <&ldo17_reg>;
72 reset-gpios = <&gpy4 5 0>;
73 spi-max-frequency = <1200000>;
74 spi-cpol;
75 spi-cpha;
76 power-on-delay = <10>;
77 reset-delay = <10>;
78 panel-width-mm = <90>;
79 panel-height-mm = <154>;
80
81 display-timings {
82 timing {
83 clock-frequency = <23492370>;
84 hactive = <480>;
85 vactive = <800>;
86 hback-porch = <16>;
87 hfront-porch = <16>;
88 vback-porch = <2>;
89 vfront-porch = <28>;
90 hsync-len = <2>;
91 vsync-len = <1>;
92 hsync-active = <0>;
93 vsync-active = <0>;
94 de-active = <0>;
95 pixelclk-active = <0>;
96 };
97 };
98
99 port {
100 lcd_ep: endpoint {
101 remote-endpoint = <&fimd_dpi_ep>;
102 };
103 };
104 };
105 };
106
107 ...
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