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