1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/mfd/canaan,k210-sysctl.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Canaan Kendryte K210 System Controller Device Tree Bindings
maintainers:
- Damien Le Moal <damien.lemoal@wdc.com>
description:
Canaan Inc. Kendryte K210 SoC system controller which provides a
register map for controlling the clocks, reset signals and pin power
domains of the SoC.
properties:
compatible:
items:
- const: canaan,k210-sysctl
- const: syscon
- const: simple-mfd
clocks:
maxItems: 1
description:
System controller Advanced Power Bus (APB) interface clock source.
clock-names:
items:
- const: pclk
reg:
maxItems: 1
clock-controller:
# Child node
type: object
$ref: "../clock/canaan,k210-clk.yaml"
description:
Clock controller for the SoC clocks. This child node definition
should follow the bindings specified in
Documentation/devicetree/bindings/clock/canaan,k210-clk.yaml.
reset-controller:
# Child node
type: object
$ref: "../reset/canaan,k210-rst.yaml"
description:
Reset controller for the SoC. This child node definition
should follow the bindings specified in
Documentation/devicetree/bindings/reset/canaan,k210-rst.yaml.
syscon-reboot:
# Child node
type: object
$ref: "../power/reset/syscon-reboot.yaml"
description:
Reboot method for the SoC. This child node definition
should follow the bindings specified in
Documentation/devicetree/bindings/power/reset/syscon-reboot.yaml.
required:
- compatible
- clocks
- reg
- clock-controller
additionalProperties: false
examples:
- |
#include <dt-bindings/clock/k210-clk.h>
#include <dt-bindings/reset/k210-rst.h>
clocks {
in0: oscllator {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <26000000>;
};
};
sysctl: syscon@50440000 {
compatible = "canaan,k210-sysctl",
"syscon", "simple-mfd";
reg = <0x50440000 0x100>;
clocks = <&sysclk K210_CLK_APB1>;
clock-names = "pclk";
sysclk: clock-controller {
#clock-cells = <1>;
compatible = "canaan,k210-clk";
clocks = <&in0>;
};
sysrst: reset-controller {
compatible = "canaan,k210-rst";
#reset-cells = <1>;
};
reboot: syscon-reboot {
compatible = "syscon-reboot";
regmap = <&sysctl>;
offset = <48>;
mask = <1>;
value = <1>;
};
};
|
