FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/display/mediatek/mediatek,merge.yaml

     # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
     %YAML 1.2
     ---
     $id: http://devicetree.org/schemas/display/mediatek/mediatek,merge.yaml#
     $schema: http://devicetree.org/meta-schemas/core.yaml#
     
     title: Mediatek display merge
     
     maintainers:
      - Chun-Kuang Hu <chunkuang.hu@kernel.org>
      - Philipp Zabel <p.zabel@pengutronix.de>
    
    description: |
      Mediatek display merge, namely MERGE, is used to merge two slice-per-line
      inputs into one side-by-side output.
      MERGE 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:
        oneOf:
          - items:
              - const: mediatek,mt8173-disp-merge
          - items:
              - const: mediatek,mt8195-disp-merge
    
      reg:
        maxItems: 1
    
      interrupts:
        maxItems: 1
    
      power-domains:
        description: A phandle and PM domain specifier as defined by bindings of
          the power controller specified by phandle. See
          Documentation/devicetree/bindings/power/power-domain.yaml for details.
    
      clocks:
        minItems: 1
        maxItems: 2
    
      clock-names:
        oneOf:
          - items:
              - const: merge
          - items:
              - const: merge
              - const: merge_async
    
      mediatek,merge-fifo-en:
        description:
          The setting of merge fifo is mainly provided for the display latency
          buffer to ensure that the back-end panel display data will not be
          underrun, a little more data is needed in the fifo.
          According to the merge fifo settings, when the water level is detected
          to be insufficient, it will trigger RDMA sending ultra and preulra
          command to SMI to speed up the data rate.
        type: boolean
    
      mediatek,merge-mute:
        description: Support mute function. Mute the content of merge output.
        type: boolean
    
      mediatek,gce-client-reg:
        description: The register of client driver can be configured by gce with
          4 arguments defined in this property, such as phandle of gce, subsys id,
          register offset and size. Each GCE subsys id is mapping to a client
          defined in the header include/dt-bindings/gce/<chip>-gce.h.
        $ref: /schemas/types.yaml#/definitions/phandle-array
        maxItems: 1
    
      resets:
        description: reset controller
          See Documentation/devicetree/bindings/reset/reset.txt for details.
        maxItems: 1
    
    required:
      - compatible
      - reg
      - power-domains
      - clocks
    
    additionalProperties: false
    
    examples:
      - |
        #include <dt-bindings/interrupt-controller/arm-gic.h>
        #include <dt-bindings/clock/mt8173-clk.h>
        #include <dt-bindings/power/mt8173-power.h>
    
        soc {
            #address-cells = <2>;
            #size-cells = <2>;
    
            merge@14017000 {
                compatible = "mediatek,mt8173-disp-merge";
                reg = <0 0x14017000 0 0x1000>;
               power-domains = <&spm MT8173_POWER_DOMAIN_MM>;
               clocks = <&mmsys CLK_MM_DISP_MERGE>;
               clock-names = "merge";
           };
       };

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