| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/display/mediatek/mediatek,gamma.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: Mediatek display gamma correction |
| |
| maintainers: |
| - Chun-Kuang Hu <chunkuang.hu@kernel.org> |
| - Philipp Zabel <p.zabel@pengutronix.de> |
| |
| description: | |
| Mediatek display gamma correction, namely GAMMA, provides a nonlinear |
| operation used to adjust luminance in display system. |
| GAMMA 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-gamma |
| - items: |
| - const: mediatek,mt8183-disp-gamma |
| - items: |
| - enum: |
| - mediatek,mt8186-disp-gamma |
| - mediatek,mt8188-disp-gamma |
| - mediatek,mt8192-disp-gamma |
| - mediatek,mt8195-disp-gamma |
| - const: mediatek,mt8183-disp-gamma |
| |
| 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: |
| items: |
| - description: GAMMA Clock |
| |
| 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 |
| |
| required: |
| - compatible |
| - reg |
| - interrupts |
| - 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> |
| #include <dt-bindings/gce/mt8173-gce.h> |
| |
| soc { |
| #address-cells = <2>; |
| #size-cells = <2>; |
| |
| gamma@14016000 { |
| compatible = "mediatek,mt8173-disp-gamma"; |
| reg = <0 0x14016000 0 0x1000>; |
| interrupts = <GIC_SPI 190 IRQ_TYPE_LEVEL_LOW>; |
| power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>; |
| clocks = <&mmsys CLK_MM_DISP_GAMMA>; |
| mediatek,gce-client-reg = <&gce SUBSYS_1401XXXX 0x6000 0x1000>; |
| }; |
| }; |
