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1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/display/mediatek/mediatek,gamma.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: Mediatek display gamma correction8 9maintainers:10 - Chun-Kuang Hu <chunkuang.hu@kernel.org>11 - Philipp Zabel <p.zabel@pengutronix.de>12 13description: |14 Mediatek display gamma correction, namely GAMMA, provides a nonlinear15 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, see18 Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml19 for details.20 21properties:22 compatible:23 oneOf:24 - enum:25 - mediatek,mt8173-disp-gamma26 - mediatek,mt8183-disp-gamma27 - mediatek,mt8195-disp-gamma28 - items:29 - enum:30 - mediatek,mt6795-disp-gamma31 - const: mediatek,mt8173-disp-gamma32 - items:33 - enum:34 - mediatek,mt8186-disp-gamma35 - mediatek,mt8188-disp-gamma36 - mediatek,mt8192-disp-gamma37 - mediatek,mt8195-disp-gamma38 - mediatek,mt8365-disp-gamma39 - const: mediatek,mt8183-disp-gamma40 - items:41 - enum:42 - mediatek,mt8188-disp-gamma43 - const: mediatek,mt8195-disp-gamma44 45 reg:46 maxItems: 147 48 interrupts:49 maxItems: 150 51 power-domains:52 description: A phandle and PM domain specifier as defined by bindings of53 the power controller specified by phandle. See54 Documentation/devicetree/bindings/power/power-domain.yaml for details.55 56 clocks:57 items:58 - description: GAMMA Clock59 60 mediatek,gce-client-reg:61 description: The register of client driver can be configured by gce with62 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 client64 defined in the header include/dt-bindings/gce/<chip>-gce.h.65 $ref: /schemas/types.yaml#/definitions/phandle-array66 maxItems: 167 68required:69 - compatible70 - reg71 - interrupts72 - power-domains73 - clocks74 75additionalProperties: false76 77examples: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 };97