1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/display/bridge/ps8640.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: MIPI DSI to eDP Video Format Converter
8
9 maintainers:
10 - Nicolas Boichat <drinkcat@chromium.org>
11
12 description: |
13 The PS8640 is a low power MIPI-to-eDP video format converter supporting
14 mobile devices with embedded panel resolutions up to 2048 x 1536. The
15 device accepts a single channel of MIPI DSI v1.1, with up to four lanes
16 plus clock, at a transmission rate up to 1.5Gbit/sec per lane. The
17 device outputs eDP v1.4, one or two lanes, at a link rate of up to
18 3.24Gbit/sec per lane.
19
20 properties:
21 compatible:
22 const: parade,ps8640
23
24 reg:
25 maxItems: 1
26 description: Base I2C address of the device.
27
28 powerdown-gpios:
29 maxItems: 1
30 description: GPIO connected to active low powerdown.
31
32 reset-gpios:
33 maxItems: 1
34 description: GPIO connected to active low reset.
35
36 vdd12-supply:
37 description: Regulator for 1.2V digital core power.
38
39 vdd33-supply:
40 description: Regulator for 3.3V digital core power.
41
42 aux-bus:
43 $ref: /schemas/display/dp-aux-bus.yaml#
44
45 ports:
46 $ref: /schemas/graph.yaml#/properties/ports
47
48 properties:
49 port@0:
50 $ref: /schemas/graph.yaml#/properties/port
51 description:
52 Video port for DSI input
53
54 port@1:
55 $ref: /schemas/graph.yaml#/properties/port
56 description:
57 Video port for eDP output (panel or connector).
58
59 required:
60 - port@0
61
62 required:
63 - compatible
64 - reg
65 - powerdown-gpios
66 - reset-gpios
67 - vdd12-supply
68 - vdd33-supply
69 - ports
70
71 additionalProperties: false
72
73 examples:
74 - |
75 #include <dt-bindings/gpio/gpio.h>
76 i2c {
77 #address-cells = <1>;
78 #size-cells = <0>;
79
80 ps8640: edp-bridge@18 {
81 compatible = "parade,ps8640";
82 reg = <0x18>;
83 powerdown-gpios = <&pio 116 GPIO_ACTIVE_LOW>;
84 reset-gpios = <&pio 115 GPIO_ACTIVE_LOW>;
85 vdd12-supply = <&ps8640_fixed_1v2>;
86 vdd33-supply = <&mt6397_vgp2_reg>;
87
88 ports {
89 #address-cells = <1>;
90 #size-cells = <0>;
91
92 port@0 {
93 reg = <0>;
94 ps8640_in: endpoint {
95 remote-endpoint = <&dsi0_out>;
96 };
97 };
98
99 port@1 {
100 reg = <1>;
101 ps8640_out: endpoint {
102 remote-endpoint = <&panel_in>;
103 };
104 };
105 };
106
107 aux-bus {
108 panel {
109 compatible = "boe,nv133fhm-n62";
110 power-supply = <&pp3300_dx_edp>;
111 backlight = <&backlight>;
112
113 port {
114 panel_in: endpoint {
115 remote-endpoint = <&ps8640_out>;
116 };
117 };
118 };
119 };
120 };
121 };
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