# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/media/fsl,imx6-mipi-csi2.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: MIPI CSI-2 Receiver core in the i.MX SoC

description:
  This is the device node for the MIPI CSI-2 Receiver core in the i.MX
  SoC. This is a Synopsys Designware MIPI CSI-2 host controller core
  combined with a D-PHY core mixed into the same register block. In
  addition this device consists of an i.MX-specific "CSI2IPU gasket"
  glue logic, also controlled from the same register block. The CSI2IPU
  gasket demultiplexes the four virtual channel streams from the host
  controller's 32-bit output image bus onto four 16-bit parallel busses
  to the i.MX IPU CSIs.

maintainers:
  - Frank Li <Frank.Li@nxp.com>

properties:
  compatible:
    const: fsl,imx6-mipi-csi2

  reg:
    maxItems: 1

  clocks:
    items:
      - description: hsi_tx (the D-PHY clock)
      - description: video_27m (D-PHY PLL reference clock)
      - description: eim_podf;

  clock-names:
    items:
      - const: dphy
      - const: ref
      - const: pix

  interrupts:
    items:
      - description: CSI-2 ERR1 irq
      - description: CSI-2 ERR2 irq
 
  '#address-cells':
    const: 1
 
  '#size-cells':
    const: 0

  port@0:
    $ref: /schemas/graph.yaml#/$defs/port-base
    unevaluatedProperties: false
    description:
      Input port node, single endpoint describing the CSI-2 transmitter.

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

        properties:
          clock-lanes:
            const: 0

          data-lanes:
            minItems: 1
            items:
              - const: 1
              - const: 2
              - const: 3
              - const: 4

        required:
          - data-lanes

patternProperties:
  '^port@[1-4]$':
    $ref: /schemas/graph.yaml#/$defs/port-base
    unevaluatedProperties: false
    description:
      ports 1 through 4 are output ports connecting with parallel bus sink
      endpoint nodes and correspond to the four MIPI CSI-2 virtual channel
      outputs.

    properties:
      endpoint@0:
        $ref: video-interfaces.yaml#
        unevaluatedProperties: false

      endpoint@1:
        $ref: video-interfaces.yaml#
        unevaluatedProperties: false

required:
  - compatible
  - reg
  - clocks
  - clock-names

additionalProperties: false

examples:
  - |
    #include <dt-bindings/clock/imx6qdl-clock.h>
 
    mipi@21dc000 {
        compatible = "fsl,imx6-mipi-csi2";
        reg = <0x021dc000 0x4000>;
        #address-cells = <1>;
        #size-cells = <0>;
        clocks = <&clks IMX6QDL_CLK_HSI_TX>,
                 <&clks IMX6QDL_CLK_VIDEO_27M>,
                 <&clks IMX6QDL_CLK_EIM_PODF>;
        clock-names = "dphy", "ref", "pix";
 
        port@0 {
            reg = <0>;
 
            endpoint {
                remote-endpoint = <&ov5640_to_mipi_csi2>;
                clock-lanes = <0>;
                data-lanes = <1 2>;
            };
        };
 
        port@1 {
            reg = <1>;
            #address-cells = <1>;
            #size-cells = <0>;
 
            endpoint@0 {
                reg = <0>;
                remote-endpoint = <&ipu1_csi0_mux_from_mipi_vc0>;
            };
 
            endpoint@1 {
                reg = <1>;
                remote-endpoint = <&ipu1_csi1_mux_from_mipi_vc0>;
            };
        };
    };