dt-bindings: display: add Unisoc's dpu bindings

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/display/sprd/sprd,sharkl3-dpu.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Unisoc Sharkl3 Display Processor Unit (DPU)

maintainers:

  - Kevin Tang <kevin.tang@unisoc.com>

description: |

  DPU (Display Processor Unit) is the Display Controller for the Unisoc SoCs

  which transfers the image data from a video memory buffer to an internal

  LCD interface.

properties:

  compatible:

    const: sprd,sharkl3-dpu

  reg:

    maxItems: 1

  interrupts:

    maxItems: 1

  clocks:

    minItems: 2

  clock-names:

    items:

      - const: clk_src_128m

      - const: clk_src_384m

  power-domains:

    maxItems: 1

  iommus:

    maxItems: 1

  port:

    type: object

    description:

      A port node with endpoint definitions as defined in

      Documentation/devicetree/bindings/media/video-interfaces.txt.

      That port should be the output endpoint, usually output to

      the associated DSI.

required:

  - compatible

  - reg

  - interrupts

  - clocks

  - clock-names

  - port

additionalProperties: false

examples:

  - |

    #include <dt-bindings/interrupt-controller/arm-gic.h>

    #include <dt-bindings/clock/sprd,sc9860-clk.h>

    dpu: dpu@63000000 {

        compatible = "sprd,sharkl3-dpu";

        reg = <0x63000000 0x1000>;

        interrupts = <GIC_SPI 46 IRQ_TYPE_LEVEL_HIGH>;

        clock-names = "clk_src_128m", "clk_src_384m";

        clocks = <&pll CLK_TWPLL_128M>,

          <&pll CLK_TWPLL_384M>;

        dpu_port: port {

            dpu_out: endpoint {

                remote-endpoint = <&dsi_in>;

            };

        };

    };