Documentation/devicetree/bindings/display/mediatek/mediatek,mdp-rdma.yaml

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/display/mediatek/mediatek,mdp-rdma.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: MediaTek MDP RDMA

maintainers:
  - Chun-Kuang Hu <chunkuang.hu@kernel.org>
  - Philipp Zabel <p.zabel@pengutronix.de>

description:
  The MediaTek MDP RDMA stands for Read Direct Memory Access.
  It provides real time data to the back-end panel driver, such as DSI,
  DPI and DP_INTF.
  It contains one line buffer to store the sufficient pixel data.
  RDMA device node must be siblings to the central MMSYS_CONFIG node.
  For a description of the MMSYS_CONFIG binding, see
  Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml for details.

properties:
  compatible:
    const: mediatek,mt8195-vdo1-rdma

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  power-domains:
    maxItems: 1

  clocks:
    items:
      - description: RDMA Clock

  iommus:
    maxItems: 1

  mediatek,gce-client-reg:
    description:
      The register of display function block to be set by gce. There are 4 arguments,
      such as gce node, subsys id, offset and register size. The subsys id that is
      mapping to the register of display function blocks is defined in the gce header
      include/dt-bindings/gce/<chip>-gce.h of each chips.
    $ref: /schemas/types.yaml#/definitions/phandle-array
    items:
      items:
        - description: phandle of GCE
        - description: GCE subsys id
        - description: register offset
        - description: register size
    maxItems: 1

required:
  - compatible
  - reg
  - power-domains
  - clocks
  - iommus
  - mediatek,gce-client-reg

additionalProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    #include <dt-bindings/clock/mt8195-clk.h>
    #include <dt-bindings/power/mt8195-power.h>
    #include <dt-bindings/gce/mt8195-gce.h>
    #include <dt-bindings/memory/mt8195-memory-port.h>

    soc {
        #address-cells = <2>;
        #size-cells = <2>;

        rdma@1c104000 {
            compatible = "mediatek,mt8195-vdo1-rdma";
            reg = <0 0x1c104000 0 0x1000>;
            interrupts = <GIC_SPI 495 IRQ_TYPE_LEVEL_HIGH 0>;
            clocks = <&vdosys1 CLK_VDO1_MDP_RDMA0>;
            power-domains = <&spm MT8195_POWER_DOMAIN_VDOSYS1>;
            iommus = <&iommu_vdo M4U_PORT_L2_MDP_RDMA0>;
            mediatek,gce-client-reg = <&gce0 SUBSYS_1c10XXXX 0x4000 0x1000>;
        };
    };