xref: /openbmc/linux/Documentation/devicetree/bindings/mfd/fsl,imx8qxp-csr.yaml (revision 84e85359)

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/mfd/fsl,imx8qxp-csr.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Freescale i.MX8qm/qxp Control and Status Registers Module

maintainers:
  - Liu Ying <victor.liu@nxp.com>

description: |
  As a system controller, the Freescale i.MX8qm/qxp Control and Status
  Registers(CSR) module represents a set of miscellaneous registers of a
  specific subsystem.  It may provide control and/or status report interfaces
  to a mix of standalone hardware devices within that subsystem.  One typical
  use-case is for some other nodes to acquire a reference to the syscon node
  by phandle, and the other typical use-case is that the operating system
  should consider all subnodes of the CSR module as separate child devices.

properties:
  $nodename:
    pattern: "^syscon@[0-9a-f]+$"

  compatible:
    items:
      - enum:
          - fsl,imx8qxp-mipi-lvds-csr
          - fsl,imx8qm-lvds-csr
      - const: syscon
      - const: simple-mfd

  reg:
    maxItems: 1

  clocks:
    maxItems: 1

  clock-names:
    const: ipg

patternProperties:
  "^(ldb|phy|pxl2dpi)$":
    type: object
    description: The possible child devices of the CSR module.

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

allOf:
  - if:
      properties:
        compatible:
          contains:
            const: fsl,imx8qxp-mipi-lvds-csr
    then:
      required:
        - pxl2dpi
        - ldb

  - if:
      properties:
        compatible:
          contains:
            const: fsl,imx8qm-lvds-csr
    then:
      required:
        - phy
        - ldb

additionalProperties: false

examples:
  - |
    #include <dt-bindings/clock/imx8-lpcg.h>
    #include <dt-bindings/firmware/imx/rsrc.h>
    mipi_lvds_0_csr: syscon@56221000 {
        compatible = "fsl,imx8qxp-mipi-lvds-csr", "syscon", "simple-mfd";
        reg = <0x56221000 0x1000>;
        clocks = <&mipi_lvds_0_di_mipi_lvds_regs_lpcg IMX_LPCG_CLK_4>;
        clock-names = "ipg";

        mipi_lvds_0_pxl2dpi: pxl2dpi {
            compatible = "fsl,imx8qxp-pxl2dpi";
            fsl,sc-resource = <IMX_SC_R_MIPI_0>;
            power-domains = <&pd IMX_SC_R_MIPI_0>;

            ports {
                #address-cells = <1>;
                #size-cells = <0>;

                port@0 {
                    #address-cells = <1>;
                    #size-cells = <0>;
                    reg = <0>;

                    mipi_lvds_0_pxl2dpi_dc0_pixel_link0: endpoint@0 {
                        reg = <0>;
                        remote-endpoint = <&dc0_pixel_link0_mipi_lvds_0_pxl2dpi>;
                    };

                    mipi_lvds_0_pxl2dpi_dc0_pixel_link1: endpoint@1 {
                        reg = <1>;
                        remote-endpoint = <&dc0_pixel_link1_mipi_lvds_0_pxl2dpi>;
                    };
                };

                port@1 {
                    #address-cells = <1>;
                    #size-cells = <0>;
                    reg = <1>;

                    mipi_lvds_0_pxl2dpi_mipi_lvds_0_ldb_ch0: endpoint@0 {
                        reg = <0>;
                        remote-endpoint = <&mipi_lvds_0_ldb_ch0_mipi_lvds_0_pxl2dpi>;
                    };

                    mipi_lvds_0_pxl2dpi_mipi_lvds_0_ldb_ch1: endpoint@1 {
                        reg = <1>;
                        remote-endpoint = <&mipi_lvds_0_ldb_ch1_mipi_lvds_0_pxl2dpi>;
                    };
                };
            };
        };

        mipi_lvds_0_ldb: ldb {
            #address-cells = <1>;
            #size-cells = <0>;
            compatible = "fsl,imx8qxp-ldb";
            clocks = <&clk IMX_SC_R_LVDS_0 IMX_SC_PM_CLK_MISC2>,
                     <&clk IMX_SC_R_LVDS_0 IMX_SC_PM_CLK_BYPASS>;
            clock-names = "pixel", "bypass";
            power-domains = <&pd IMX_SC_R_LVDS_0>;

            channel@0 {
                #address-cells = <1>;
                #size-cells = <0>;
                reg = <0>;
                phys = <&mipi_lvds_0_phy>;
                phy-names = "lvds_phy";

                port@0 {
                    reg = <0>;

                    mipi_lvds_0_ldb_ch0_mipi_lvds_0_pxl2dpi: endpoint {
                        remote-endpoint = <&mipi_lvds_0_pxl2dpi_mipi_lvds_0_ldb_ch0>;
                    };
                };

                port@1 {
                    reg = <1>;

                    /* ... */
                };
            };

            channel@1 {
                #address-cells = <1>;
                #size-cells = <0>;
                reg = <1>;
                phys = <&mipi_lvds_0_phy>;
                phy-names = "lvds_phy";

                port@0 {
                    reg = <0>;

                    mipi_lvds_0_ldb_ch1_mipi_lvds_0_pxl2dpi: endpoint {
                        remote-endpoint = <&mipi_lvds_0_pxl2dpi_mipi_lvds_0_ldb_ch1>;
                    };
                };

                port@1 {
                    reg = <1>;

                    /* ... */
                };
            };
        };
    };

    mipi_lvds_0_phy: phy@56228300 {
        compatible = "fsl,imx8qxp-mipi-dphy";
        reg = <0x56228300 0x100>;
        clocks = <&clk IMX_SC_R_LVDS_0 IMX_SC_PM_CLK_PHY>;
        clock-names = "phy_ref";
        #phy-cells = <0>;
        fsl,syscon = <&mipi_lvds_0_csr>;
        power-domains = <&pd IMX_SC_R_MIPI_0>;
    };