1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/display/bridge/ite,it66121.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: ITE it66121 HDMI bridge
8
9 maintainers:
10 - Phong LE <ple@baylibre.com>
11 - Neil Armstrong <neil.armstrong@linaro.org>
12
13 description: |
14 The IT66121 is a high-performance and low-power single channel HDMI
15 transmitter, fully compliant with HDMI 1.3a, HDCP 1.2 and backward compatible
16 to DVI 1.0 specifications.
17
18 properties:
19 compatible:
20 enum:
21 - ite,it66121
22 - ite,it6610
23
24 reg:
25 maxItems: 1
26
27 reset-gpios:
28 maxItems: 1
29 description: GPIO connected to active low reset
30
31 vrf12-supply:
32 description: Regulator for 1.2V analog core power.
33
34 vcn33-supply:
35 description: Regulator for 3.3V digital core power.
36
37 vcn18-supply:
38 description: Regulator for 1.8V IO core power.
39
40 interrupts:
41 maxItems: 1
42
43 "#sound-dai-cells":
44 const: 0
45
46 ports:
47 $ref: /schemas/graph.yaml#/properties/ports
48
49 properties:
50 port@0:
51 $ref: /schemas/graph.yaml#/$defs/port-base
52 unevaluatedProperties: false
53 description: DPI input port.
54
55 properties:
56 endpoint:
57 $ref: /schemas/graph.yaml#/$defs/endpoint-base
58 unevaluatedProperties: false
59
60 properties:
61 bus-width:
62 description:
63 Endpoint bus width.
64 enum:
65 - 12 # 12 data lines connected and dual-edge mode
66 - 24 # 24 data lines connected and single-edge mode
67 default: 24
68
69 port@1:
70 $ref: /schemas/graph.yaml#/properties/port
71 description: HDMI Connector port.
72
73 required:
74 - port@0
75 - port@1
76
77 required:
78 - compatible
79 - reg
80 - reset-gpios
81 - vrf12-supply
82 - vcn33-supply
83 - vcn18-supply
84 - interrupts
85 - ports
86
87 additionalProperties: false
88
89 examples:
90 - |
91 #include <dt-bindings/interrupt-controller/irq.h>
92 #include <dt-bindings/gpio/gpio.h>
93 i2c {
94 #address-cells = <1>;
95 #size-cells = <0>;
96
97 it66121hdmitx: hdmitx@4c {
98 compatible = "ite,it66121";
99 pinctrl-names = "default";
100 pinctrl-0 = <&ite_pins_default>;
101 vcn33-supply = <&mt6358_vcn33_wifi_reg>;
102 vcn18-supply = <&mt6358_vcn18_reg>;
103 vrf12-supply = <&mt6358_vrf12_reg>;
104 reset-gpios = <&pio 160 GPIO_ACTIVE_LOW>;
105 interrupt-parent = <&pio>;
106 interrupts = <4 IRQ_TYPE_LEVEL_LOW>;
107 reg = <0x4c>;
108
109 ports {
110 #address-cells = <1>;
111 #size-cells = <0>;
112
113 port@0 {
114 reg = <0>;
115 it66121_in: endpoint {
116 bus-width = <12>;
117 remote-endpoint = <&display_out>;
118 };
119 };
120
121 port@1 {
122 reg = <1>;
123 hdmi_conn_out: endpoint {
124 remote-endpoint = <&hdmi_conn_in>;
125 };
126 };
127 };
128 };
129 };
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