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 enum:
20 - enum: !! 20 - mediatek,mt6779-gce
21 - mediatek,mt6779-gce !! 21 - mediatek,mt8173-gce
22 - mediatek,mt8173-gce !! 22 - mediatek,mt8183-gce
23 - mediatek,mt8183-gce !! 23 - mediatek,mt8186-gce
24 - mediatek,mt8186-gce !! 24 - mediatek,mt8192-gce
25 - mediatek,mt8188-gce !! 25 - mediatek,mt8195-gce
26 - mediatek,mt8192-gce <<
27 - mediatek,mt8195-gce <<
28 - items: <<
29 - const: mediatek,mt6795-gce <<
30 - const: mediatek,mt8173-gce <<
31 26
32 "#mbox-cells": 27 "#mbox-cells":
33 const: 2 28 const: 2
34 description: 29 description:
35 The first cell describes the Thread ID o 30 The first cell describes the Thread ID of the GCE,
36 the second cell describes the priority o 31 the second cell describes the priority of the GCE thread
37 32
38 reg: 33 reg:
39 maxItems: 1 34 maxItems: 1
40 35
41 interrupts: 36 interrupts:
42 maxItems: 1 37 maxItems: 1
43 38
44 clocks: 39 clocks:
45 items: 40 items:
46 - description: Global Command Engine clo 41 - description: Global Command Engine clock
47 42
48 clock-names: 43 clock-names:
49 items: 44 items:
50 - const: gce 45 - const: gce
51 46
52 required: 47 required:
53 - compatible 48 - compatible
54 - "#mbox-cells" 49 - "#mbox-cells"
55 - reg 50 - reg
56 - interrupts 51 - interrupts
57 - clocks 52 - clocks
58 53
59 allOf: 54 allOf:
60 - if: 55 - if:
61 not: 56 not:
62 properties: 57 properties:
63 compatible: 58 compatible:
64 contains: 59 contains:
65 const: mediatek,mt8195-gce 60 const: mediatek,mt8195-gce
66 then: 61 then:
67 required: 62 required:
68 - clock-names 63 - clock-names
69 64
70 additionalProperties: false 65 additionalProperties: false
71 66
72 examples: 67 examples:
73 - | 68 - |
74 #include <dt-bindings/clock/mt8173-clk.h> 69 #include <dt-bindings/clock/mt8173-clk.h>
75 #include <dt-bindings/interrupt-controller 70 #include <dt-bindings/interrupt-controller/arm-gic.h>
76 #include <dt-bindings/interrupt-controller 71 #include <dt-bindings/interrupt-controller/irq.h>
77 72
78 soc { 73 soc {
79 #address-cells = <2>; 74 #address-cells = <2>;
80 #size-cells = <2>; 75 #size-cells = <2>;
81 76
82 gce: mailbox@10212000 { 77 gce: mailbox@10212000 {
83 compatible = "mediatek,mt8173-gce" 78 compatible = "mediatek,mt8173-gce";
84 reg = <0 0x10212000 0 0x1000>; 79 reg = <0 0x10212000 0 0x1000>;
85 interrupts = <GIC_SPI 135 IRQ_TYPE 80 interrupts = <GIC_SPI 135 IRQ_TYPE_LEVEL_LOW>;
86 #mbox-cells = <2>; 81 #mbox-cells = <2>;
87 clocks = <&infracfg CLK_INFRA_GCE> 82 clocks = <&infracfg CLK_INFRA_GCE>;
88 clock-names = "gce"; 83 clock-names = "gce";
89 }; 84 };
90 }; 85 };
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