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 - enum:
25 - mediatek,mt8173-disp-gamma
26 - mediatek,mt8183-disp-gamma
27 - mediatek,mt8195-disp-gamma
28 - items:
29 - enum:
30 - mediatek,mt6795-disp-gamma
31 - mediatek,mt8167-disp-gamma
32 - const: mediatek,mt8173-disp-gamma
33 - items:
34 - enum:
35 - mediatek,mt8186-disp-gamma
36 - mediatek,mt8188-disp-gamma
37 - mediatek,mt8192-disp-gamma
38 - mediatek,mt8195-disp-gamma
39 - mediatek,mt8365-disp-gamma
40 - const: mediatek,mt8183-disp-gamma
41 - items:
42 - enum:
43 - mediatek,mt8188-disp-gamma
44 - const: mediatek,mt8195-disp-gamma
45
46 reg:
47 maxItems: 1
48
49 interrupts:
50 maxItems: 1
51
52 power-domains:
53 description: A phandle and PM domain specifier as defined by bindings of
54 the power controller specified by phandle. See
55 Documentation/devicetree/bindings/power/power-domain.yaml for details.
56
57 clocks:
58 items:
59 - description: GAMMA Clock
60
61 mediatek,gce-client-reg:
62 description: The register of client driver can be configured by gce with
63 4 arguments defined in this property, such as phandle of gce, subsys id,
64 register offset and size. Each GCE subsys id is mapping to a client
65 defined in the header include/dt-bindings/gce/<chip>-gce.h.
66 $ref: /schemas/types.yaml#/definitions/phandle-array
67 maxItems: 1
68
69 ports:
70 $ref: /schemas/graph.yaml#/properties/ports
71
72 properties:
73 port@0:
74 $ref: /schemas/graph.yaml#/properties/port
75 description: GAMMA input, usually from one of the AAL blocks.
76
77 port@1:
78 $ref: /schemas/graph.yaml#/properties/port
79 description:
80 GAMMA output to the input of the next desired component in the
81 display pipeline, for example one of the available DITHER or
82 POSTMASK blocks.
83
84 required:
85 - port@0
86 - port@1
87
88required:
89 - compatible
90 - reg
91 - interrupts
92 - power-domains
93 - clocks
94
95additionalProperties: false
96
97examples:
98 - |
99 #include <dt-bindings/interrupt-controller/arm-gic.h>
100 #include <dt-bindings/clock/mt8173-clk.h>
101 #include <dt-bindings/power/mt8173-power.h>
102 #include <dt-bindings/gce/mt8173-gce.h>
103
104 soc {
105 #address-cells = <2>;
106 #size-cells = <2>;
107
108 gamma@14016000 {
109 compatible = "mediatek,mt8173-disp-gamma";
110 reg = <0 0x14016000 0 0x1000>;
111 interrupts = <GIC_SPI 190 IRQ_TYPE_LEVEL_LOW>;
112 power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>;
113 clocks = <&mmsys CLK_MM_DISP_GAMMA>;
114 mediatek,gce-client-reg = <&gce SUBSYS_1401XXXX 0x6000 0x1000>;
115 };
116 };