1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
  2%YAML 1.2
  3---
  4$id: http://devicetree.org/schemas/display/bridge/ite,it6505.yaml#
  5$schema: http://devicetree.org/meta-schemas/core.yaml#
  6
  7title: ITE it6505
  8
  9maintainers:
 10  - Allen Chen <allen.chen@ite.com.tw>
 11
 12description: |
 13  The IT6505 is a high-performance DisplayPort 1.1a transmitter,
 14  fully compliant with DisplayPort 1.1a, HDCP 1.3 specifications.
 15  The IT6505 supports color depth of up to 36 bits (12 bits/color)
 16  and ensures robust transmission of high-quality uncompressed video
 17  content, along with uncompressed and compressed digital audio content.
 18
 19  Aside from the various video output formats supported, the IT6505
 20  also encodes and transmits up to 8 channels of I2S digital audio,
 21  with sampling rate up to 192kHz and sample size up to 24 bits.
 22  In addition, an S/PDIF input port takes in compressed audio of up to
 23  192kHz frame rate.
 24
 25  Each IT6505 chip comes preprogrammed with an unique HDCP key,
 26  in compliance with the HDCP 1.3 standard so as to provide secure
 27  transmission of high-definition content. Users of the IT6505 need not
 28  purchase any HDCP keys or ROMs.
 29
 30properties:
 31  compatible:
 32    const: ite,it6505
 33
 34  reg:
 35    maxItems: 1
 36
 37  ovdd-supply:
 38    description: I/O voltage
 39
 40  pwr18-supply:
 41    description: core voltage
 42
 43  interrupts:
 44    maxItems: 1
 45    description: interrupt specifier of INT pin
 46
 47  reset-gpios:
 48    maxItems: 1
 49    description: gpio specifier of RESET pin
 50
 51  extcon:
 52    maxItems: 1
 53    description: extcon specifier for the Power Delivery
 54
 55  ports:
 56    $ref: /schemas/graph.yaml#/properties/ports
 57
 58    properties:
 59      port@0:
 60        $ref: /schemas/graph.yaml#/$defs/port-base
 61        unevaluatedProperties: false
 62        description: A port node pointing to DPI host port node
 63
 64        properties:
 65          endpoint:
 66            $ref: /schemas/graph.yaml#/$defs/endpoint-base
 67            unevaluatedProperties: false
 68
 69            properties:
 70              link-frequencies:
 71                minItems: 1
 72                maxItems: 1
 73                description: Allowed max link frequencies in Hz
 74
 75      port@1:
 76        $ref: /schemas/graph.yaml#/$defs/port-base
 77        unevaluatedProperties: false
 78        description: Video port for DP output
 79
 80        properties:
 81          endpoint:
 82            $ref: /schemas/graph.yaml#/$defs/endpoint-base
 83            unevaluatedProperties: false
 84
 85            properties:
 86              data-lanes:
 87                minItems: 1
 88                uniqueItems: true
 89                items:
 90                  - enum: [ 0, 1 ]
 91                  - const: 1
 92                  - const: 2
 93                  - const: 3
 94
 95    required:
 96      - port@0
 97      - port@1
 98
 99required:
100  - compatible
101  - ovdd-supply
102  - pwr18-supply
103  - interrupts
104  - reset-gpios
105  - extcon
106  - ports
107
108additionalProperties: false
109
110examples:
111  - |
112    #include <dt-bindings/interrupt-controller/irq.h>
113
114    i2c {
115        #address-cells = <1>;
116        #size-cells = <0>;
117
118        dp-bridge@5c {
119            compatible = "ite,it6505";
120            interrupts = <152 IRQ_TYPE_EDGE_FALLING 152 0>;
121            reg = <0x5c>;
122            pinctrl-names = "default";
123            pinctrl-0 = <&it6505_pins>;
124            ovdd-supply = <&mt6358_vsim1_reg>;
125            pwr18-supply = <&it6505_pp18_reg>;
126            reset-gpios = <&pio 179 1>;
127            extcon = <&usbc_extcon>;
128
129            ports {
130                #address-cells = <1>;
131                #size-cells = <0>;
132
133                port@0 {
134                    reg = <0>;
135                    it6505_in: endpoint {
136                        remote-endpoint = <&dpi_out>;
137                        link-frequencies = /bits/ 64 <150000000>;
138                    };
139                };
140
141                port@1 {
142                    reg = <1>;
143                    it6505_out: endpoint {
144                        remote-endpoint = <&dp_in>;
145                        data-lanes = <0 1>;
146                    };
147                };
148            };
149        };
150    };