xref: /linux/Documentation/devicetree/bindings/clock/sifive/fu540-prci.yaml (revision 3bfd5f422f07a10f485c3f046431783c7c4004f2) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2# Copyright (C) 2020 SiFive, Inc.
3%YAML 1.2
4---
5$id: http://devicetree.org/schemas/clock/sifive/fu540-prci.yaml#
6$schema: http://devicetree.org/meta-schemas/core.yaml#
7
8title: SiFive FU540 Power Reset Clock Interrupt Controller (PRCI)
9
10maintainers:
11  - Sagar Kadam <sagar.kadam@sifive.com>
12  - Paul Walmsley  <paul.walmsley@sifive.com>
13
14description:
15  On the FU540 family of SoCs, most system-wide clock and reset integration
16  is via the PRCI IP block.
17  The clock consumer should specify the desired clock via the clock ID
18  macros defined in include/dt-bindings/clock/sifive-fu540-prci.h.
19  These macros begin with PRCI_CLK_.
20
21  The hfclk and rtcclk nodes are required, and represent physical
22  crystals or resonators located on the PCB.  These nodes should be present
23  underneath /, rather than /soc.
24
25properties:
26  compatible:
27    const: sifive,fu540-c000-prci
28
29  reg:
30    maxItems: 1
31
32  clocks:
33    items:
34      - description: high frequency clock.
35      - description: RTL clock.
36
37  clock-names:
38    items:
39      - const: hfclk
40      - const: rtcclk
41
42  "#clock-cells":
43    const: 1
44
45required:
46  - compatible
47  - reg
48  - clocks
49  - "#clock-cells"
50
51additionalProperties: false
52
53examples:
54  - |
55    prci: clock-controller@10000000 {
56      compatible = "sifive,fu540-c000-prci";
57      reg = <0x10000000 0x1000>;
58      clocks = <&hfclk>, <&rtcclk>;
59      #clock-cells = <1>;
60    };
61