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