tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2# Copyright (c) 2020 MediaTek Inc.
3%YAML 1.2
4---
5$id: http://devicetree.org/schemas/memory-controllers/mediatek,smi-larb.yaml#
6$schema: http://devicetree.org/meta-schemas/core.yaml#
7
8title: SMI (Smart Multimedia Interface) Local Arbiter
9
10maintainers:
11 - Yong Wu <yong.wu@mediatek.com>
12
13description: |
14 The hardware block diagram please check bindings/iommu/mediatek,iommu.yaml
15
16properties:
17 compatible:
18 oneOf:
19 - enum:
20 - mediatek,mt2701-smi-larb
21 - mediatek,mt2712-smi-larb
22 - mediatek,mt6779-smi-larb
23 - mediatek,mt8167-smi-larb
24 - mediatek,mt8173-smi-larb
25 - mediatek,mt8183-smi-larb
26 - mediatek,mt8192-smi-larb
27
28 - description: for mt7623
29 items:
30 - const: mediatek,mt7623-smi-larb
31 - const: mediatek,mt2701-smi-larb
32
33 reg:
34 maxItems: 1
35
36 clocks:
37 description: |
38 apb and smi are mandatory. gals(global async local sync) is optional.
39 minItems: 2
40 items:
41 - description: apb is Advanced Peripheral Bus clock, It's the clock for
42 setting the register.
43 - description: smi is the clock for transfer data and command.
44 - description: the clock for gals.
45
46 clock-names:
47 minItems: 2
48 maxItems: 3
49
50 power-domains:
51 maxItems: 1
52
53 mediatek,smi:
54 $ref: /schemas/types.yaml#/definitions/phandle-array
55 description: a phandle to the smi_common node.
56
57 mediatek,larb-id:
58 $ref: /schemas/types.yaml#/definitions/uint32
59 minimum: 0
60 maximum: 31
61 description: the hardware id of this larb. It's only required when this
62 hardward id is not consecutive from its M4U point of view.
63
64required:
65 - compatible
66 - reg
67 - clocks
68 - clock-names
69 - power-domains
70
71allOf:
72 - if: # HW has gals
73 properties:
74 compatible:
75 enum:
76 - mediatek,mt8183-smi-larb
77
78 then:
79 properties:
80 clock:
81 items:
82 minItems: 3
83 maxItems: 3
84 clock-names:
85 items:
86 - const: apb
87 - const: smi
88 - const: gals
89
90 else:
91 properties:
92 clock:
93 items:
94 minItems: 2
95 maxItems: 2
96 clock-names:
97 items:
98 - const: apb
99 - const: smi
100
101 - if:
102 properties:
103 compatible:
104 contains:
105 enum:
106 - mediatek,mt2701-smi-larb
107 - mediatek,mt2712-smi-larb
108 - mediatek,mt6779-smi-larb
109 - mediatek,mt8167-smi-larb
110 - mediatek,mt8192-smi-larb
111
112 then:
113 required:
114 - mediatek,larb-id
115
116additionalProperties: false
117
118examples:
119 - |+
120 #include <dt-bindings/clock/mt8173-clk.h>
121 #include <dt-bindings/power/mt8173-power.h>
122
123 larb1: larb@16010000 {
124 compatible = "mediatek,mt8173-smi-larb";
125 reg = <0x16010000 0x1000>;
126 mediatek,smi = <&smi_common>;
127 power-domains = <&scpsys MT8173_POWER_DOMAIN_VDEC>;
128 clocks = <&vdecsys CLK_VDEC_CKEN>,
129 <&vdecsys CLK_VDEC_LARB_CKEN>;
130 clock-names = "apb", "smi";
131 };