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125 lines
2.8 KiB
125 lines
2.8 KiB
# SPDX-License-Identifier: GPL-2.0 |
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%YAML 1.2 |
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--- |
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$id: http://devicetree.org/schemas/display/allwinner,sun6i-a31-drc.yaml# |
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$schema: http://devicetree.org/meta-schemas/core.yaml# |
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title: Allwinner A31 Dynamic Range Controller Device Tree Bindings |
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maintainers: |
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- Chen-Yu Tsai <[email protected]> |
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- Maxime Ripard <[email protected]> |
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description: | |
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The DRC (Dynamic Range Controller) allows to dynamically adjust |
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pixel brightness/contrast based on histogram measurements for LCD |
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content adaptive backlight control. |
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properties: |
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compatible: |
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enum: |
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- allwinner,sun6i-a31-drc |
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- allwinner,sun6i-a31s-drc |
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- allwinner,sun8i-a23-drc |
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- allwinner,sun8i-a33-drc |
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- allwinner,sun9i-a80-drc |
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reg: |
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maxItems: 1 |
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interrupts: |
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maxItems: 1 |
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clocks: |
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items: |
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- description: The DRC interface clock |
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- description: The DRC module clock |
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- description: The DRC DRAM clock |
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clock-names: |
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items: |
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- const: ahb |
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- const: mod |
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- const: ram |
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resets: |
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maxItems: 1 |
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ports: |
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$ref: /schemas/graph.yaml#/properties/ports |
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properties: |
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port@0: |
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$ref: /schemas/graph.yaml#/properties/port |
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description: | |
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Input endpoints of the controller. |
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port@1: |
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$ref: /schemas/graph.yaml#/properties/port |
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description: | |
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Output endpoints of the controller. |
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required: |
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- port@0 |
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- port@1 |
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required: |
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- compatible |
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- reg |
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- interrupts |
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- clocks |
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- clock-names |
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- resets |
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- ports |
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additionalProperties: false |
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examples: |
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- | |
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#include <dt-bindings/interrupt-controller/arm-gic.h> |
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#include <dt-bindings/clock/sun6i-a31-ccu.h> |
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#include <dt-bindings/reset/sun6i-a31-ccu.h> |
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drc0: drc@1e70000 { |
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compatible = "allwinner,sun6i-a31-drc"; |
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reg = <0x01e70000 0x10000>; |
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interrupts = <GIC_SPI 91 IRQ_TYPE_LEVEL_HIGH>; |
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clocks = <&ccu CLK_AHB1_DRC0>, <&ccu CLK_IEP_DRC0>, |
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<&ccu CLK_DRAM_DRC0>; |
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clock-names = "ahb", "mod", |
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"ram"; |
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resets = <&ccu RST_AHB1_DRC0>; |
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ports { |
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#address-cells = <1>; |
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#size-cells = <0>; |
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drc0_in: port@0 { |
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reg = <0>; |
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drc0_in_be0: endpoint { |
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remote-endpoint = <&be0_out_drc0>; |
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}; |
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}; |
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drc0_out: port@1 { |
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#address-cells = <1>; |
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#size-cells = <0>; |
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reg = <1>; |
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drc0_out_tcon0: endpoint@0 { |
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reg = <0>; |
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remote-endpoint = <&tcon0_in_drc0>; |
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}; |
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drc0_out_tcon1: endpoint@1 { |
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reg = <1>; |
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remote-endpoint = <&tcon1_in_drc0>; |
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}; |
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}; |
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}; |
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}; |
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...
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