# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/media/nxp,imx8mq-mipi-csi2.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: NXP i.MX8MQ MIPI CSI-2 receiver

maintainers:
  - Martin Kepplinger <martin.kepplinger@puri.sm>

description: |-
  This binding covers the CSI-2 RX PHY and host controller included in the
  NXP i.MX8MQ SoC. It handles the sensor/image input and process for all the
  input imaging devices.

properties:
  compatible:
    enum:
      - fsl,imx8mq-mipi-csi2

  reg:
    maxItems: 1

  clocks:
    items:
      - description: core is the RX Controller Core Clock input. This clock
                     must be exactly equal to or faster than the receive
                     byteclock from the RX DPHY.
      - description: esc is the Rx Escape Clock. This must be the same escape
                     clock that the RX DPHY receives.
      - description: ui is the pixel clock (phy_ref up to 333Mhz).
                     See the reference manual for details.

  clock-names:
    items:
      - const: core
      - const: esc
      - const: ui

  power-domains:
    maxItems: 1

  resets:
    items:
      - description: CORE_RESET reset register bit definition
      - description: PHY_REF_RESET reset register bit definition
      - description: ESC_RESET reset register bit definition

  fsl,mipi-phy-gpr:
    description: |
      The phandle to the imx8mq syscon iomux-gpr with the register
      for setting RX_ENABLE for the mipi receiver.
 
      The format should be as follows:
      <gpr req_gpr>
      gpr is the phandle to general purpose register node.
      req_gpr is the gpr register offset of RX_ENABLE for the mipi phy.
    $ref: /schemas/types.yaml#/definitions/phandle-array
    items:
      - items:
          - description: The 'gpr' is the phandle to general purpose register node.
          - description: The 'req_gpr' is the gpr register offset containing
                        CSI2_1_RX_ENABLE or CSI2_2_RX_ENABLE respectively.
            maximum: 0xff

  interconnects:
    maxItems: 1

  interconnect-names:
    const: dram

  ports:
    $ref: /schemas/graph.yaml#/properties/ports

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

            required:
              - data-lanes

      port@1:
        $ref: /schemas/graph.yaml#/properties/port
        description:
          Output port node

    required:
      - port@0
      - port@1

required:
  - compatible
  - reg
  - clocks
  - clock-names
  - power-domains
  - resets
  - fsl,mipi-phy-gpr
  - ports

additionalProperties: false

examples:
  - |
    #include <dt-bindings/clock/imx8mq-clock.h>
    #include <dt-bindings/interconnect/imx8mq.h>
    #include <dt-bindings/reset/imx8mq-reset.h>
 
    csi@30a70000 {
        compatible = "fsl,imx8mq-mipi-csi2";
        reg = <0x30a70000 0x1000>;
        clocks = <&clk IMX8MQ_CLK_CSI1_CORE>,
                 <&clk IMX8MQ_CLK_CSI1_ESC>,
                 <&clk IMX8MQ_CLK_CSI1_PHY_REF>;
        clock-names = "core", "esc", "ui";
        assigned-clocks = <&clk IMX8MQ_CLK_CSI1_CORE>,
                          <&clk IMX8MQ_CLK_CSI1_PHY_REF>,
                          <&clk IMX8MQ_CLK_CSI1_ESC>;
        assigned-clock-rates = <266000000>, <200000000>, <66000000>;
        assigned-clock-parents = <&clk IMX8MQ_SYS1_PLL_266M>,
                                 <&clk IMX8MQ_SYS2_PLL_1000M>,
                                 <&clk IMX8MQ_SYS1_PLL_800M>;
        power-domains = <&pgc_mipi_csi1>;
        resets = <&src IMX8MQ_RESET_MIPI_CSI1_CORE_RESET>,
                 <&src IMX8MQ_RESET_MIPI_CSI1_PHY_REF_RESET>,
                 <&src IMX8MQ_RESET_MIPI_CSI1_ESC_RESET>;
        fsl,mipi-phy-gpr = <&iomuxc_gpr 0x88>;
        interconnects = <&noc IMX8MQ_ICM_CSI1 &noc IMX8MQ_ICS_DRAM>;
        interconnect-names = "dram";
 
        ports {
            #address-cells = <1>;
            #size-cells = <0>;
 
            port@0 {
                reg = <0>;
 
                imx8mm_mipi_csi_in: endpoint {
                    remote-endpoint = <&imx477_out>;
                    data-lanes = <1 2 3 4>;
                };
            };
 
            port@1 {
                reg = <1>;
 
                imx8mm_mipi_csi_out: endpoint {
                    remote-endpoint = <&csi_in>;
                };
            };
        };
    };

...