1 What: /sys/class/pwm/
2 Date: May 2013
3 KernelVersion: 3.11
4 Contact: H Hartley Sweeten <hsweeten@vis
5 Description:
6 The pwm/ class sub-directory b
7 Framework and provides a sysfs
8 channels.
9
10 What: /sys/class/pwm/pwmchip<N>/
11 Date: May 2013
12 KernelVersion: 3.11
13 Contact: H Hartley Sweeten <hsweeten@vis
14 Description:
15 A /sys/class/pwm/pwmchipN dire
16 probed PWM controller/chip whe
17 PWM chip.
18
19 What: /sys/class/pwm/pwmchip<N>/npwm
20 Date: May 2013
21 KernelVersion: 3.11
22 Contact: H Hartley Sweeten <hsweeten@vis
23 Description:
24 The number of PWM channels sup
25
26 What: /sys/class/pwm/pwmchip<N>/expo
27 Date: May 2013
28 KernelVersion: 3.11
29 Contact: H Hartley Sweeten <hsweeten@vis
30 Description:
31 Exports a PWM channel from the
32 Value is between 0 and /sys/cl
33
34 What: /sys/class/pwm/pwmchip<N>/unex
35 Date: May 2013
36 KernelVersion: 3.11
37 Contact: H Hartley Sweeten <hsweeten@vis
38 Description:
39 Unexports a PWM channel.
40
41 What: /sys/class/pwm/pwmchip<N>/pwmX
42 Date: May 2013
43 KernelVersion: 3.11
44 Contact: H Hartley Sweeten <hsweeten@vis
45 Description:
46 A /sys/class/pwm/pwmchipN/pwmX
47 each exported PWM channel wher
48 channel number.
49
50 What: /sys/class/pwm/pwmchip<N>/pwmX
51 Date: May 2013
52 KernelVersion: 3.11
53 Contact: H Hartley Sweeten <hsweeten@vis
54 Description:
55 Sets the PWM signal period in
56
57 What: /sys/class/pwm/pwmchip<N>/pwmX
58 Date: May 2013
59 KernelVersion: 3.11
60 Contact: H Hartley Sweeten <hsweeten@vis
61 Description:
62 Sets the PWM signal duty cycle
63
64 What: /sys/class/pwm/pwmchip<N>/pwmX
65 Date: May 2013
66 KernelVersion: 3.11
67 Contact: H Hartley Sweeten <hsweeten@vis
68 Description:
69 Sets the output polarity of th
70 "inversed".
71
72 What: /sys/class/pwm/pwmchip<N>/pwmX
73 Date: May 2013
74 KernelVersion: 3.11
75 Contact: H Hartley Sweeten <hsweeten@vis
76 Description:
77 Enable/disable the PWM signal.
78 0 is disabled
79 1 is enabled
80
81 What: /sys/class/pwm/pwmchip<N>/pwmX
82 Date: June 2016
83 KernelVersion: 4.8
84 Contact: Lee Jones <lee@kernel.org>
85 Description:
86 Capture information about a PW
87 pair unsigned integers (period
88 single space.
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