1 # SPDX-License-Identifier: (GPL-2.0-only OR BS
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/mailbox/med
5 $schema: http://devicetree.org/meta-schemas/co
6
7 title: Mediatek Global Command Engine Mailbox
8
9 maintainers:
10 - Houlong Wei <houlong.wei@mediatek.com>
11
12 description:
13 The Global Command Engine (GCE) is used to h
14 critical time limitation, such as updating d
15 vblank. The GCE can be used to implement the
16
17 properties:
18 compatible:
19 oneOf:
20 - enum:
21 - mediatek,mt6779-gce
22 - mediatek,mt8173-gce
23 - mediatek,mt8183-gce
24 - mediatek,mt8186-gce
25 - mediatek,mt8188-gce
26 - mediatek,mt8192-gce
27 - mediatek,mt8195-gce
28 - items:
29 - const: mediatek,mt6795-gce
30 - const: mediatek,mt8173-gce
31
32 "#mbox-cells":
33 const: 2
34 description:
35 The first cell describes the Thread ID o
36 the second cell describes the priority o
37
38 reg:
39 maxItems: 1
40
41 interrupts:
42 maxItems: 1
43
44 clocks:
45 items:
46 - description: Global Command Engine clo
47
48 clock-names:
49 items:
50 - const: gce
51
52 required:
53 - compatible
54 - "#mbox-cells"
55 - reg
56 - interrupts
57 - clocks
58
59 allOf:
60 - if:
61 not:
62 properties:
63 compatible:
64 contains:
65 const: mediatek,mt8195-gce
66 then:
67 required:
68 - clock-names
69
70 additionalProperties: false
71
72 examples:
73 - |
74 #include <dt-bindings/clock/mt8173-clk.h>
75 #include <dt-bindings/interrupt-controller
76 #include <dt-bindings/interrupt-controller
77
78 soc {
79 #address-cells = <2>;
80 #size-cells = <2>;
81
82 gce: mailbox@10212000 {
83 compatible = "mediatek,mt8173-gce"
84 reg = <0 0x10212000 0 0x1000>;
85 interrupts = <GIC_SPI 135 IRQ_TYPE
86 #mbox-cells = <2>;
87 clocks = <&infracfg CLK_INFRA_GCE>
88 clock-names = "gce";
89 };
90 };
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