tjh.dev
Linux kernel mirror (for testing)
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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
7title: Samsung LD9040 AMOLED LCD parallel RGB panel with SPI control bus
8
9description: |
10 The panel must obey the rules for a SPI slave device as specified in
11 spi/spi-controller.yaml
12
13maintainers:
14 - Andrzej Hajda <a.hajda@samsung.com>
15
16allOf:
17 - $ref: panel-common.yaml#
18
19properties:
20 compatible:
21 const: samsung,ld9040
22
23 display-timings: true
24 port: true
25 reg: true
26 reset-gpios: true
27
28 vdd3-supply:
29 description: core voltage supply
30
31 vci-supply:
32 description: voltage supply for analog circuits
33
34 power-on-delay:
35 $ref: /schemas/types.yaml#/definitions/uint32
36 description: delay after turning regulators on [ms]
37
38 reset-delay:
39 $ref: /schemas/types.yaml#/definitions/uint32
40 description: delay after reset sequence [ms]
41
42 panel-width-mm:
43 description: physical panel width [mm]
44
45 panel-height-mm:
46 description: physical panel height [mm]
47
48required:
49 - compatible
50 - reg
51 - vdd3-supply
52 - vci-supply
53 - reset-gpios
54 - display-timings
55
56unevaluatedProperties: false
57
58examples:
59 - |
60 spi {
61 #address-cells = <1>;
62 #size-cells = <0>;
63
64 lcd@0 {
65 compatible = "samsung,ld9040";
66 #address-cells = <1>;
67 #size-cells = <0>;
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...