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Based on kernel version 3.15.4. Page generated on 2014-07-07 08:59 EST.

1	What:		/sys/class/pwm/
2	Date:		May 2013
3	KernelVersion:	3.11
4	Contact:	H Hartley Sweeten <hsweeten@visionengravers.com>
5	Description:
6			The pwm/ class sub-directory belongs to the Generic PWM
7			Framework and provides a sysfs interface for using PWM
8			channels.
9	
10	What:		/sys/class/pwm/pwmchipN/
11	Date:		May 2013
12	KernelVersion:	3.11
13	Contact:	H Hartley Sweeten <hsweeten@visionengravers.com>
14	Description:
15			A /sys/class/pwm/pwmchipN directory is created for each
16			probed PWM controller/chip where N is the base of the
17			PWM chip.
18	
19	What:		/sys/class/pwm/pwmchipN/npwm
20	Date:		May 2013
21	KernelVersion:	3.11
22	Contact:	H Hartley Sweeten <hsweeten@visionengravers.com>
23	Description:
24			The number of PWM channels supported by the PWM chip.
25	
26	What:		/sys/class/pwm/pwmchipN/export
27	Date:		May 2013
28	KernelVersion:	3.11
29	Contact:	H Hartley Sweeten <hsweeten@visionengravers.com>
30	Description:
31			Exports a PWM channel from the PWM chip for sysfs control.
32			Value is between 0 and /sys/class/pwm/pwmchipN/npwm - 1.
33	
34	What:		/sys/class/pwm/pwmchipN/unexport
35	Date:		May 2013
36	KernelVersion:	3.11
37	Contact:	H Hartley Sweeten <hsweeten@visionengravers.com>
38	Description:
39			Unexports a PWM channel.
40	
41	What:		/sys/class/pwm/pwmchipN/pwmX
42	Date:		May 2013
43	KernelVersion:	3.11
44	Contact:	H Hartley Sweeten <hsweeten@visionengravers.com>
45	Description:
46			A /sys/class/pwm/pwmchipN/pwmX directory is created for
47			each exported PWM channel where X is the exported PWM
48			channel number.
49	
50	What:		/sys/class/pwm/pwmchipN/pwmX/period
51	Date:		May 2013
52	KernelVersion:	3.11
53	Contact:	H Hartley Sweeten <hsweeten@visionengravers.com>
54	Description:
55			Sets the PWM signal period in nanoseconds.
56	
57	What:		/sys/class/pwm/pwmchipN/pwmX/duty_cycle
58	Date:		May 2013
59	KernelVersion:	3.11
60	Contact:	H Hartley Sweeten <hsweeten@visionengravers.com>
61	Description:
62			Sets the PWM signal duty cycle in nanoseconds.
63	
64	What:		/sys/class/pwm/pwmchipN/pwmX/polarity
65	Date:		May 2013
66	KernelVersion:	3.11
67	Contact:	H Hartley Sweeten <hsweeten@visionengravers.com>
68	Description:
69			Sets the output polarity of the PWM signal to "normal" or
70			"inversed".
71	
72	What:		/sys/class/pwm/pwmchipN/pwmX/enable
73	Date:		May 2013
74	KernelVersion:	3.11
75	Contact:	H Hartley Sweeten <hsweeten@visionengravers.com>
76	Description:
77			Enable/disable the PWM signal.
78			0 is disabled
79			1 is enabled
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