Documentation/devicetree/bindings/display/bridge/ite,it66121.yaml

   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 Device Tree Bindings
   8
   9 maintainers:
  10   - Phong LE <ple@baylibre.com>
  11   - Neil Armstrong <narmstrong@baylibre.com>
  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     const: ite,it66121
  21
  22   reg:
  23     maxItems: 1
  24
  25   reset-gpios:
  26     maxItems: 1
  27     description: GPIO connected to active low reset
  28
  29   vrf12-supply:
  30     description: Regulator for 1.2V analog core power.
  31
  32   vcn33-supply:
  33     description: Regulator for 3.3V digital core power.
  34
  35   vcn18-supply:
  36     description: Regulator for 1.8V IO core power.
  37
  38   interrupts:
  39     maxItems: 1
  40
  41   ports:
  42     $ref: /schemas/graph.yaml#/properties/ports
  43
  44     properties:
  45       port@0:
  46         $ref: /schemas/graph.yaml#/$defs/port-base
  47         unevaluatedProperties: false
  48         description: DPI input port.
  49
  50         properties:
  51           endpoint:
  52             $ref: /schemas/graph.yaml#/$defs/endpoint-base
  53             unevaluatedProperties: false
  54
  55             properties:
  56               bus-width:
  57                 description:
  58                   Endpoint bus width.
  59                 enum:
  60                   - 12  # 12 data lines connected and dual-edge mode
  61                   - 24  # 24 data lines connected and single-edge mode
  62                 default: 24
  63
  64       port@1:
  65         $ref: /schemas/graph.yaml#/properties/port
  66         description: HDMI Connector port.
  67
  68     required:
  69       - port@0
  70       - port@1
  71
  72 required:
  73   - compatible
  74   - reg
  75   - reset-gpios
  76   - vrf12-supply
  77   - vcn33-supply
  78   - vcn18-supply
  79   - interrupts
  80   - ports
  81
  82 additionalProperties: false
  83
  84 examples:
  85   - |
  86     #include <dt-bindings/interrupt-controller/irq.h>
  87     #include <dt-bindings/gpio/gpio.h>
  88     i2c {
  89         #address-cells = <1>;
  90         #size-cells = <0>;
  91
  92         it66121hdmitx: hdmitx@4c {
  93             compatible = "ite,it66121";
  94             pinctrl-names = "default";
  95             pinctrl-0 = <&ite_pins_default>;
  96             vcn33-supply = <&mt6358_vcn33_wifi_reg>;
  97             vcn18-supply = <&mt6358_vcn18_reg>;
  98             vrf12-supply = <&mt6358_vrf12_reg>;
  99             reset-gpios = <&pio 160 GPIO_ACTIVE_LOW>;
 100             interrupt-parent = <&pio>;
 101             interrupts = <4 IRQ_TYPE_LEVEL_LOW>;
 102             reg = <0x4c>;
 103
 104             ports {
 105                 #address-cells = <1>;
 106                 #size-cells = <0>;
 107
 108                 port@0 {
 109                     reg = <0>;
 110                     it66121_in: endpoint {
 111                         bus-width = <12>;
 112                         remote-endpoint = <&display_out>;
 113                     };
 114                 };
 115
 116                 port@1 {
 117                     reg = <1>;
 118                     hdmi_conn_out: endpoint {
 119                         remote-endpoint = <&hdmi_conn_in>;
 120                     };
 121                 };
 122             };
 123         };
 124     };