Documentation/devicetree/bindings/display/samsung/samsung,fimd.yaml

# SPDX-License-Identifier: GPL-2.0-only
%YAML 1.2
---
$id: http://devicetree.org/schemas/display/samsung/samsung,fimd.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Samsung S3C/S5P/Exynos SoC Fully Interactive Mobile Display (FIMD)

maintainers:
  - Inki Dae <inki.dae@samsung.com>
  - Seung-Woo Kim <sw0312.kim@samsung.com>
  - Kyungmin Park <kyungmin.park@samsung.com>
  - Krzysztof Kozlowski <krzk@kernel.org>

properties:
  compatible:
    enum:
      - samsung,s3c2443-fimd
      - samsung,s3c6400-fimd
      - samsung,s5pv210-fimd
      - samsung,exynos3250-fimd
      - samsung,exynos4210-fimd
      - samsung,exynos5250-fimd
      - samsung,exynos5420-fimd

  '#address-cells':
    const: 1

  clocks:
    maxItems: 2

  clock-names:
    items:
      - const: sclk_fimd
      - const: fimd

  display-timings:
    $ref: ../panel/display-timings.yaml#

  i80-if-timings:
    type: object
    additionalProperties: false
    description: |
      Timing configuration for lcd i80 interface support.
      The parameters are defined as::
      VCLK(internal)  __|??????|_____|??????|_____|??????|_____|??????|_____|??
                        :            :            :            :            :
      Address Output  --:<XXXXXXXXXXX:XXXXXXXXXXXX:XXXXXXXXXXXX:XXXXXXXXXXXX:XX
                        | cs-setup+1 |            :            :            :
                        |<---------->|            :            :            :
      Chip Select     ???????????????|____________:____________:____________|??
                                     | wr-setup+1 |            | wr-hold+1  |
                                     |<---------->|            |<---------->|
      Write Enable    ????????????????????????????|____________|???????????????
                                                  | wr-active+1|
                                                  |<---------->|
      Video Data      ----------------------------<XXXXXXXXXXXXXXXXXXXXXXXXX>--

    properties:
      cs-setup:
        $ref: /schemas/types.yaml#/definitions/uint32
        description:
          Clock cycles for the active period of address signal is enabled until
          chip select is enabled.
        default: 0

      wr-active:
        $ref: /schemas/types.yaml#/definitions/uint32
        description:
          Clock cycles for the active period of CS is enabled.
        default: 1

      wr-hold:
        $ref: /schemas/types.yaml#/definitions/uint32
        description:
          Clock cycles for the active period of CS is disabled until write
          signal is disabled.
        default: 0

      wr-setup:
        $ref: /schemas/types.yaml#/definitions/uint32
        description:
          Clock cycles for the active period of CS signal is enabled until
          write signal is enabled.
        default: 0

  iommus:
    minItems: 1
    maxItems: 2

  iommu-names:
    items:
      - const: m0
      - const: m1

  interrupts:
    items:
      - description: FIFO level
      - description: VSYNC
      - description: LCD system

  interrupt-names:
    items:
      - const: fifo
      - const: vsync
      - const: lcd_sys

  power-domains:
    maxItems: 1

  reg:
    maxItems: 1

  samsung,invert-vden:
    type: boolean
    description:
      Video enable signal is inverted.

  samsung,invert-vclk:
    type: boolean
    description:
      Video clock signal is inverted.

  samsung,sysreg:
    $ref: /schemas/types.yaml#/definitions/phandle
    description:
      Phandle to System Register syscon.

  '#size-cells':
    const: 0

patternProperties:
  "^port@[0-4]+$":
    $ref: /schemas/graph.yaml#/properties/port
    description: |
      Contains ports with port with index::
       0 - for CAMIF0 input,
       1 - for CAMIF1 input,
       2 - for CAMIF2 input,
       3 - for parallel output,
       4 - for write-back interface

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

allOf:
  - if:
      properties:
        compatible:
          contains:
            const: samsung,exynos5420-fimd
    then:
      properties:
        iommus:
          minItems: 2
          maxItems: 2

additionalProperties: false

examples:
  - |
    #include <dt-bindings/clock/exynos4.h>

    fimd@11c00000 {
        compatible = "samsung,exynos4210-fimd";
        interrupt-parent = <&combiner>;
        reg = <0x11c00000 0x20000>;
        interrupt-names = "fifo", "vsync", "lcd_sys";
        interrupts = <11 0>, <11 1>, <11 2>;
        clocks = <&clock CLK_SCLK_FIMD0>, <&clock CLK_FIMD0>;
        clock-names = "sclk_fimd", "fimd";
        power-domains = <&pd_lcd0>;
        iommus = <&sysmmu_fimd0>;
        samsung,sysreg = <&sys_reg>;

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

        samsung,invert-vden;
        samsung,invert-vclk;

        pinctrl-0 = <&lcd_clk>, <&lcd_data24>;
        pinctrl-names = "default";

        port@3 {
            reg = <3>;

            fimd_dpi_ep: endpoint {
                remote-endpoint = <&lcd_ep>;
            };
        };
    };