1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/arm/sp810.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: ARM Versatile Express SP810 System Controller
8
9 maintainers:
10 - Andre Przywara <andre.przywara@arm.com>
11
12 description:
13 The Arm SP810 system controller provides clocks, timers and a watchdog.
14
15 # We need a select here so we don't match all nodes with 'arm,primecell'
16 select:
17 properties:
18 compatible:
19 contains:
20 const: arm,sp810
21 required:
22 - compatible
23
24 properties:
25 compatible:
26 items:
27 - const: arm,sp810
28 - const: arm,primecell
29
30 reg:
31 maxItems: 1
32
33 clock-names:
34 items:
35 - const: refclk
36 - const: timclk
37 - const: apb_pclk
38
39 clocks:
40 items:
41 - description: reference clock
42 - description: timer clock
43 - description: APB register access clock
44
45 "#clock-cells":
46 const: 1
47
48 clock-output-names:
49 maxItems: 4
50
51 assigned-clocks:
52 maxItems: 4
53
54 assigned-clock-parents:
55 maxItems: 4
56
57 additionalProperties: false
58
59 required:
60 - compatible
61 - reg
62 - clocks
63 - clock-names
64 - "#clock-cells"
65
66 examples:
67 - |
68 sysctl@20000 {
69 compatible = "arm,sp810", "arm,primecell";
70 reg = <0x020000 0x1000>;
71 clocks = <&v2m_refclk32khz>, <&v2m_refclk1mhz>, <&smbclk>;
72 clock-names = "refclk", "timclk", "apb_pclk";
73 #clock-cells = <1>;
74 clock-output-names = "timerclken0", "timerclken1",
75 "timerclken2", "timerclken3";
76 assigned-clocks = <&v2m_sysctl 0>, <&v2m_sysctl 1>,
77 <&v2m_sysctl 3>, <&v2m_sysctl 3>;
78 assigned-clock-parents = <&v2m_refclk1mhz>, <&v2m_refclk1mhz>,
79 <&v2m_refclk1mhz>, <&v2m_refclk1mhz>;
80 };
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