nxp,ptp-netc.yaml

 1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
 2%YAML 1.2
 3---
 4$id: http://devicetree.org/schemas/ptp/nxp,ptp-netc.yaml#
 5$schema: http://devicetree.org/meta-schemas/core.yaml#
 6
 7title: NXP NETC V4 Timer PTP clock
 8
 9description:
10  NETC V4 Timer provides current time with nanosecond resolution, precise
11  periodic pulse, pulse on timeout (alarm), and time capture on external
12  pulse support. And it supports time synchronization as required for
13  IEEE 1588 and IEEE 802.1AS-2020.
14
15maintainers:
16  - Wei Fang <wei.fang@nxp.com>
17  - Clark Wang <xiaoning.wang@nxp.com>
18
19properties:
20  compatible:
21    enum:
22      - pci1131,ee02
23
24  reg:
25    maxItems: 1
26
27  clocks:
28    maxItems: 1
29    description:
30      The reference clock of NETC Timer, can be selected between 3 different
31      clock sources using an integrated hardware mux TMR_CTRL[CK_SEL].
32      The "ccm" means the reference clock comes from CCM of SoC.
33      The "ext" means the reference clock comes from external IO pins.
34      If not present, indicates that the system clock of NETC IP is selected
35      as the reference clock.
36
37  clock-names:
38    enum:
39      - ccm
40      - ext
41
42required:
43  - compatible
44  - reg
45
46allOf:
47  - $ref: /schemas/pci/pci-device.yaml
48
49unevaluatedProperties: false
50
51examples:
52  - |
53    pcie {
54        #address-cells = <3>;
55        #size-cells = <2>;
56
57        ptp-timer@18,0 {
58            compatible = "pci1131,ee02";
59            reg = <0x00c000 0 0 0 0>;
60            clocks = <&scmi_clk 18>;
61            clock-names = "ccm";
62        };
63    };