atmel,isc.yaml

# SPDX-License-Identifier: GPL-2.0-only
# Copyright (C) 2016-2021 Microchip Technology, Inc.
%YAML 1.2
---
$id: http://devicetree.org/schemas/media/atmel,isc.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Atmel Image Sensor Controller (ISC)

maintainers:
  - Eugen Hristev <eugen.hristev@microchip.com>

description: |
  The Image Sensor Controller (ISC) device provides the video input capabilities for the
  Atmel/Microchip AT91 SAMA family of devices.

  The ISC has a single parallel input that supports RAW Bayer, RGB or YUV video,
  with both external synchronization and BT.656 synchronization for the latter.

properties:
  compatible:
    const: atmel,sama5d2-isc

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clocks:
    minItems: 3
    maxItems: 3

  clock-names:
    items:
      - const: hclock
      - const: iscck
      - const: gck

  '#clock-cells':
    const: 0

  clock-output-names:
    const: isc-mck

  port:
    $ref: /schemas/graph.yaml#/$defs/port-base
    unevaluatedProperties: false
    description:
      Input port node, single endpoint describing the input pad.

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

        properties:
          remote-endpoint: true

          bus-width:
            enum: [8, 9, 10, 11, 12]
            default: 12

          hsync-active:
            enum: [0, 1]
            default: 1

          vsync-active:
            enum: [0, 1]
            default: 1

          pclk-sample:
            enum: [0, 1]
            default: 1

        required:
          - remote-endpoint

        additionalProperties: false

    additionalProperties: false

required:
  - compatible
  - reg
  - clocks
  - clock-names
  - '#clock-cells'
  - clock-output-names
  - port

additionalProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/irq.h>

    isc: isc@f0008000 {
        compatible = "atmel,sama5d2-isc";
        reg = <0xf0008000 0x4000>;
        interrupts = <46 IRQ_TYPE_LEVEL_HIGH 5>;
        clocks = <&isc_clk>, <&iscck>, <&isc_gclk>;
        clock-names = "hclock", "iscck", "gck";
        #clock-cells = <0>;
        clock-output-names = "isc-mck";

        port {
                isc_0: endpoint {
                       remote-endpoint = <&ov7740_0>;
                       hsync-active = <1>;
                       vsync-active = <0>;
                       pclk-sample = <1>;
                       bus-width = <8>;
                };
        };
    };