linux/Documentation/devicetree/bindings/media/microchip,xisc.yaml

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
# Copyright (C) 2021 Microchip Technology, Inc.
%YAML 1.2
---
$id: http://devicetree.org/schemas/media/microchip,xisc.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Microchip eXtended Image Sensor Controller (XISC)

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

description: |
  The eXtended Image Sensor Controller (XISC) device provides the video input capabilities for the
  Microchip AT91 SAM family of devices.

  The XISC has a single internal parallel input that supports RAW Bayer, RGB or YUV video.
  The source can be either a demuxer from a CSI2 type of bus, or a simple direct bridge to a
  parallel sensor.

  The XISC provides one clock output that is used to clock the demuxer/bridge.

properties:
  compatible:
    const: microchip,sama7g5-isc

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clocks:
    maxItems: 1

  clock-names:
    items:
      - const: hclock

  '#clock-cells':
    const: 0

  clock-output-names:
    const: isc-mck

  microchip,mipi-mode:
    type: boolean
    description:
      As the XISC is usually connected to a demux/bridge, the XISC receives
      the same type of input, however, it should be aware of the type of
      signals received. The mipi-mode enables different internal handling
      of the data and clock lines.

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

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

        properties:
          bus-type:
            enum: [5, 6]

          remote-endpoint: true

          bus-width:
            enum: [8, 9, 10, 11, 12, 14]
            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
          - bus-type

        additionalProperties: false

    additionalProperties: false

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

additionalProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    #include <dt-bindings/clock/at91.h>
    #include <dt-bindings/interrupt-controller/irq.h>
    #include <dt-bindings/media/video-interfaces.h>

    xisc: xisc@e1408000 {
        compatible = "microchip,sama7g5-isc";
        reg = <0xe1408000 0x2000>;
        interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>;
        clocks = <&pmc PMC_TYPE_PERIPHERAL 56>;
        clock-names = "hclock";
        #clock-cells = <0>;
        clock-output-names = "isc-mck";

        port {
                xisc_in: endpoint {
                       bus-type = <MEDIA_BUS_TYPE_PARALLEL>;
                       remote-endpoint = <&csi2dc_out>;
                       hsync-active = <1>;
                       vsync-active = <1>;
                       bus-width = <12>;
                };
        };
    };