1# Copyright 2017, 2024 NXP
2# SPDX-License-Identifier: Apache-2.0
3
4description: NXP FlexTimer Module (FTM) PWM controller
5
6compatible: "nxp,ftm-pwm"
7
8include: [pwm-controller.yaml, "nxp,ftm.yaml", "pinctrl-device.yaml"]
9
10properties:
11  "#pwm-cells":
12    const: 3
13
14  pinctrl-0:
15    required: true
16
17  clock-source:
18    type: string
19    required: true
20    enum:
21      - "system"
22      - "fixed"
23      - "external"
24    description: |
25      Select one of three possible clock sources for the FTM counter:
26        * system: it's the bus interface clock driving the FTM module. Usually
27          provides higher timer resolution than the other two clock sources.
28        * fixed: it's a fixed clock defined by chip integration.
29        * external: it's a clock that can be accessed externally to the chip and
30          passes through a sychronizer clocked by the FTM bus interface clock.
31
32      This clock source selection is independent of the bus interface clock
33      driving the FTM module. Refer to the chip specific documentation for
34      further information.
35
36pwm-cells:
37  - channel
38  # period in terms of nanoseconds
39  - period
40  - flags
41