# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/media/ti,da850-vpif.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Texas Instruments DA850/AM18x Video Port Interface (VPIF)

maintainers:
  - Lad, Prabhakar <prabhakar.csengg@gmail.com>

description:
  The Video Port Interface (VPIF) is the primary component for video capture
  and display on the DA850/AM18x family of TI DaVinci/Sitara SoCs.
 
  TI Document reference:- SPRUH82C, Chapter 35
  https://www.ti.com/lit/pdf/spruh82

properties:
  compatible:
    const: ti,da850-vpif

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  power-domains:
    maxItems: 1
 
  '#address-cells':
    const: 1
 
  '#size-cells':
    const: 0

  port:
    $ref: /schemas/graph.yaml#/$defs/port-base
    unevaluatedProperties: false
    description:
      VPIF port when the bus is configured as a single 16-bit input

    properties:
      endpoint:
        $ref: video-interfaces.yaml#
        unevaluatedProperties: false

        properties:
          bus-width:
            enum: [8, 16]

patternProperties:
  ^port@[0-1]$:
    $ref: /schemas/graph.yaml#/$defs/port-base
    unevaluatedProperties: false
    description:
      VPIF has a 16-bit parallel bus input, supporting 2 8-bit channels or a
      single 16-bit channel. It should contain one or two port child nodes
      with child 'endpoint' node. If there are two ports then port@0 must
      describe the input and port@1 output channels.

    properties:
      endpoint:
        $ref: video-interfaces.yaml#
        unevaluatedProperties: false

        properties:
          bus-width:
            enum: [8, 16]

      endpoint@0:
        $ref: video-interfaces.yaml#
        unevaluatedProperties: false
        description:
          First 8-bit channel using the lower data lines [7:0].

        properties:
          bus-width:
            const: 8

          data-shift:
            const: 0

      endpoint@1:
        $ref: video-interfaces.yaml#
        unevaluatedProperties: false
        description:
          Second 8-bit channel using the upper data lines [15:8].

        properties:
          bus-width:
            const: 8

          data-shift:
            const: 8

    anyOf:
      - properties:
          endpoint@0: false
          endpoint@1: false
      - properties:
          endpoint: false

required:
  - compatible
  - reg
  - interrupts

oneOf:
  - properties:
      port@0: false
      port@1: false
  - properties:
      port: false

additionalProperties: false

examples:
  - |
    vpif@217000 {
        compatible = "ti,da850-vpif";
        reg = <0x217000 0x1000>;
        interrupts = <92>;
 
        #address-cells = <1>;
        #size-cells = <0>;
 
        port@0 {
            reg = <0>;
            #address-cells = <1>;
            #size-cells = <0>;
 
            vpif_input_ch0: endpoint@0 {
                reg = <0>;
                bus-width = <8>;
                remote-endpoint = <&composite_in>;
            };
 
            vpif_input_ch1: endpoint@1 {
                reg = <1>;
                bus-width = <8>;
                data-shift = <8>;
            };
        };
 
        port@1 {
            reg = <1>;
 
            vpif_output_ch0: endpoint {
                bus-width = <8>;
                remote-endpoint = <&composite_out>;
            };
        };
    };

  - |
    vpif@217000 {
        compatible = "ti,da850-vpif";
        reg = <0x217000 0x1000>;
        interrupts = <92>;
 
        port {
            vpif_ch0: endpoint {
                bus-width = <16>;
            };
        };
    };