tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
7title: Mediatek display gamma correction
8
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 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
21properties:
22 compatible:
23 oneOf:
24 - items:
25 - const: mediatek,mt8173-disp-gamma
26 - items:
27 - const: mediatek,mt8183-disp-gamma
28 - items:
29 - enum:
30 - mediatek,mt8186-disp-gamma
31 - mediatek,mt8188-disp-gamma
32 - mediatek,mt8192-disp-gamma
33 - mediatek,mt8195-disp-gamma
34 - const: mediatek,mt8183-disp-gamma
35
36 reg:
37 maxItems: 1
38
39 interrupts:
40 maxItems: 1
41
42 power-domains:
43 description: A phandle and PM domain specifier as defined by bindings of
44 the power controller specified by phandle. See
45 Documentation/devicetree/bindings/power/power-domain.yaml for details.
46
47 clocks:
48 items:
49 - description: GAMMA Clock
50
51 mediatek,gce-client-reg:
52 description: The register of client driver can be configured by gce with
53 4 arguments defined in this property, such as phandle of gce, subsys id,
54 register offset and size. Each GCE subsys id is mapping to a client
55 defined in the header include/dt-bindings/gce/<chip>-gce.h.
56 $ref: /schemas/types.yaml#/definitions/phandle-array
57 maxItems: 1
58
59required:
60 - compatible
61 - reg
62 - interrupts
63 - power-domains
64 - clocks
65
66additionalProperties: false
67
68examples:
69 - |
70 #include <dt-bindings/interrupt-controller/arm-gic.h>
71 #include <dt-bindings/clock/mt8173-clk.h>
72 #include <dt-bindings/power/mt8173-power.h>
73 #include <dt-bindings/gce/mt8173-gce.h>
74
75 soc {
76 #address-cells = <2>;
77 #size-cells = <2>;
78
79 gamma@14016000 {
80 compatible = "mediatek,mt8173-disp-gamma";
81 reg = <0 0x14016000 0 0x1000>;
82 interrupts = <GIC_SPI 190 IRQ_TYPE_LEVEL_LOW>;
83 power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>;
84 clocks = <&mmsys CLK_MM_DISP_GAMMA>;
85 mediatek,gce-client-reg = <&gce SUBSYS_1401XXXX 0x6000 0x1000>;
86 };
87 };