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,ovl.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Mediatek display overlay
8
9 maintainers:
10 - Chun-Kuang Hu <chunkuang.hu@kernel.org>
11 - Philipp Zabel <p.zabel@pengutronix.de>
12
13 description: |
14 Mediatek display overlay, namely OVL, can do alpha blending from
15 the memory.
16 OVL 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
21 properties:
22 compatible:
23 oneOf:
24 - enum:
25 - mediatek,mt2701-disp-ovl
26 - mediatek,mt8173-disp-ovl
27 - mediatek,mt8183-disp-ovl
28 - mediatek,mt8192-disp-ovl
29 - mediatek,mt8195-mdp3-ovl
30 - items:
31 - enum:
32 - mediatek,mt7623-disp-ovl
33 - mediatek,mt2712-disp-ovl
34 - const: mediatek,mt2701-disp-ovl
35 - items:
36 - enum:
37 - mediatek,mt6795-disp-ovl
38 - const: mediatek,mt8173-disp-ovl
39 - items:
40 - enum:
41 - mediatek,mt8188-disp-ovl
42 - mediatek,mt8195-disp-ovl
43 - const: mediatek,mt8183-disp-ovl
44 - items:
45 - enum:
46 - mediatek,mt8186-disp-ovl
47 - mediatek,mt8365-disp-ovl
48 - const: mediatek,mt8192-disp-ovl
49
50 reg:
51 maxItems: 1
52
53 interrupts:
54 maxItems: 1
55
56 power-domains:
57 description: A phandle and PM domain specifier as defined by bindings of
58 the power controller specified by phandle. See
59 Documentation/devicetree/bindings/power/power-domain.yaml for details.
60
61 clocks:
62 items:
63 - description: OVL Clock
64
65 iommus:
66 description:
67 This property should point to the respective IOMMU block with master port as argument,
68 see Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml for details.
69
70 mediatek,gce-client-reg:
71 description: The register of client driver can be configured by gce with
72 4 arguments defined in this property, such as phandle of gce, subsys id,
73 register offset and size. Each GCE subsys id is mapping to a client
74 defined in the header include/dt-bindings/gce/<chip>-gce.h.
75 $ref: /schemas/types.yaml#/definitions/phandle-array
76 maxItems: 1
77
78 required:
79 - compatible
80 - reg
81 - interrupts
82 - power-domains
83 - clocks
84 - iommus
85
86 additionalProperties: false
87
88 examples:
89 - |
90 #include <dt-bindings/interrupt-controller/arm-gic.h>
91 #include <dt-bindings/clock/mt8173-clk.h>
92 #include <dt-bindings/power/mt8173-power.h>
93 #include <dt-bindings/gce/mt8173-gce.h>
94 #include <dt-bindings/memory/mt8173-larb-port.h>
95
96 soc {
97 #address-cells = <2>;
98 #size-cells = <2>;
99
100 ovl0: ovl@1400c000 {
101 compatible = "mediatek,mt8173-disp-ovl";
102 reg = <0 0x1400c000 0 0x1000>;
103 interrupts = <GIC_SPI 180 IRQ_TYPE_LEVEL_LOW>;
104 power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>;
105 clocks = <&mmsys CLK_MM_DISP_OVL0>;
106 iommus = <&iommu M4U_PORT_DISP_OVL0>;
107 mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0xc000 0x1000>;
108 };
109 };
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.