mediatek,gamma.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/display/mediatek/mediatek,gamma.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Mediatek display gamma correction
    8 
    9 maintainers:
   10   - Chun-Kuang Hu <chunkuang.hu@kernel.org>
   11   - Philipp Zabel <p.zabel@pengutronix.de>
   12 
   13 description: |
   14   Mediatek display gamma correction, namely GAMMA, provides a nonlinear
   15   operation used to adjust luminance in display system.
   16   GAMMA device node must be siblings to the central MMSYS_CONFIG node.
   17   For a description of the MMSYS_CONFIG binding, see
   18   Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml
   19   for details.
   20 
   21 properties:
   22   compatible:
   23     oneOf:
   24       - items:
   25           - const: mediatek,mt8173-disp-gamma
   26       - items:
   27           - const: mediatek,mt8183-disp-gamma
   28       - items:
   29           - enum:
   30               - mediatek,mt8186-disp-gamma
   31               - mediatek,mt8192-disp-gamma
   32               - mediatek,mt8195-disp-gamma
   33           - const: mediatek,mt8183-disp-gamma
   34 
   35   reg:
   36     maxItems: 1
   37 
   38   interrupts:
   39     maxItems: 1
   40 
   41   power-domains:
   42     description: A phandle and PM domain specifier as defined by bindings of
   43       the power controller specified by phandle. See
   44       Documentation/devicetree/bindings/power/power-domain.yaml for details.
   45 
   46   clocks:
   47     items:
   48       - description: GAMMA Clock
   49 
   50   mediatek,gce-client-reg:
   51     description: The register of client driver can be configured by gce with
   52       4 arguments defined in this property, such as phandle of gce, subsys id,
   53       register offset and size. Each GCE subsys id is mapping to a client
   54       defined in the header include/dt-bindings/gce/<chip>-gce.h.
   55     $ref: /schemas/types.yaml#/definitions/phandle-array
   56     maxItems: 1
   57 
   58 required:
   59   - compatible
   60   - reg
   61   - interrupts
   62   - power-domains
   63   - clocks
   64 
   65 additionalProperties: false
   66 
   67 examples:
   68   - |
   69     #include <dt-bindings/interrupt-controller/arm-gic.h>
   70     #include <dt-bindings/clock/mt8173-clk.h>
   71     #include <dt-bindings/power/mt8173-power.h>
   72     #include <dt-bindings/gce/mt8173-gce.h>
   73 
   74     soc {
   75         #address-cells = <2>;
   76         #size-cells = <2>;
   77 
   78         gamma@14016000 {
   79             compatible = "mediatek,mt8173-disp-gamma";
   80             reg = <0 0x14016000 0 0x1000>;
   81             interrupts = <GIC_SPI 190 IRQ_TYPE_LEVEL_LOW>;
   82             power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>;
   83             clocks = <&mmsys CLK_MM_DISP_GAMMA>;
   84             mediatek,gce-client-reg = <&gce SUBSYS_1401XXXX 0x6000 0x1000>;
   85         };
   86     };

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

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sys/contrib/device-tree/Bindings/display/mediatek/mediatek,gamma.yaml