1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 $id: http://devicetree.org/schemas/display/mediatek/mediatek,gamma.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Mediatek display gamma correction
10 - Chun-Kuang Hu <chunkuang.hu@kernel.org>
11 - Philipp Zabel <p.zabel@pengutronix.de>
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
25 - const: mediatek,mt8173-disp-gamma
27 - const: mediatek,mt8183-disp-gamma
30 - mediatek,mt8192-disp-gamma
31 - mediatek,mt8195-disp-gamma
33 - mediatek,mt8183-disp-gamma
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.
48 - description: GAMMA Clock
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
65 additionalProperties: false
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>
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>;