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 - enum: 25 - mediatek,mt8173-disp-gamma 26 - mediatek,mt8183-disp-gamma 27 - mediatek,mt8195-disp-gamma 28 - items: 29 - enum: 30 - mediatek,mt6795-disp-gamma 31 - const: mediatek,mt8173-disp-gamma 32 - items: 33 - enum: 34 - mediatek,mt8186-disp-gamma 35 - mediatek,mt8188-disp-gamma 36 - mediatek,mt8192-disp-gamma 37 - mediatek,mt8195-disp-gamma 38 - mediatek,mt8365-disp-gamma 39 - const: mediatek,mt8183-disp-gamma 40 - items: 41 - enum: 42 - mediatek,mt8188-disp-gamma 43 - const: mediatek,mt8195-disp-gamma 44 45 reg: 46 maxItems: 1 47 48 interrupts: 49 maxItems: 1 50 51 power-domains: 52 description: A phandle and PM domain specifier as defined by bindings of 53 the power controller specified by phandle. See 54 Documentation/devicetree/bindings/power/power-domain.yaml for details. 55 56 clocks: 57 items: 58 - description: GAMMA Clock 59 60 mediatek,gce-client-reg: 61 description: The register of client driver can be configured by gce with 62 4 arguments defined in this property, such as phandle of gce, subsys id, 63 register offset and size. Each GCE subsys id is mapping to a client 64 defined in the header include/dt-bindings/gce/<chip>-gce.h. 65 $ref: /schemas/types.yaml#/definitions/phandle-array 66 maxItems: 1 67 68 required: 69 - compatible 70 - reg 71 - interrupts 72 - power-domains 73 - clocks 74 75 additionalProperties: false 76 77 examples: 78 - | 79 #include <dt-bindings/interrupt-controller/arm-gic.h> 80 #include <dt-bindings/clock/mt8173-clk.h> 81 #include <dt-bindings/power/mt8173-power.h> 82 #include <dt-bindings/gce/mt8173-gce.h> 83 84 soc { 85 #address-cells = <2>; 86 #size-cells = <2>; 87 88 gamma@14016000 { 89 compatible = "mediatek,mt8173-disp-gamma"; 90 reg = <0 0x14016000 0 0x1000>; 91 interrupts = <GIC_SPI 190 IRQ_TYPE_LEVEL_LOW>; 92 power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>; 93 clocks = <&mmsys CLK_MM_DISP_GAMMA>; 94 mediatek,gce-client-reg = <&gce SUBSYS_1401XXXX 0x6000 0x1000>; 95 }; 96 };
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