Based on kernel version 6.12.4. Page generated on 2024-12-12 21:01 EST.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 | What: /sys/class/pwm/ Date: May 2013 KernelVersion: 3.11 Contact: H Hartley Sweeten <hsweeten@visionengravers.com> Description: The pwm/ class sub-directory belongs to the Generic PWM Framework and provides a sysfs interface for using PWM channels. What: /sys/class/pwm/pwmchip<N>/ Date: May 2013 KernelVersion: 3.11 Contact: H Hartley Sweeten <hsweeten@visionengravers.com> Description: A /sys/class/pwm/pwmchipN directory is created for each probed PWM controller/chip where N is the base of the PWM chip. What: /sys/class/pwm/pwmchip<N>/npwm Date: May 2013 KernelVersion: 3.11 Contact: H Hartley Sweeten <hsweeten@visionengravers.com> Description: The number of PWM channels supported by the PWM chip. What: /sys/class/pwm/pwmchip<N>/export Date: May 2013 KernelVersion: 3.11 Contact: H Hartley Sweeten <hsweeten@visionengravers.com> Description: Exports a PWM channel from the PWM chip for sysfs control. Value is between 0 and /sys/class/pwm/pwmchipN/npwm - 1. What: /sys/class/pwm/pwmchip<N>/unexport Date: May 2013 KernelVersion: 3.11 Contact: H Hartley Sweeten <hsweeten@visionengravers.com> Description: Unexports a PWM channel. What: /sys/class/pwm/pwmchip<N>/pwmX Date: May 2013 KernelVersion: 3.11 Contact: H Hartley Sweeten <hsweeten@visionengravers.com> Description: A /sys/class/pwm/pwmchipN/pwmX directory is created for each exported PWM channel where X is the exported PWM channel number. What: /sys/class/pwm/pwmchip<N>/pwmX/period Date: May 2013 KernelVersion: 3.11 Contact: H Hartley Sweeten <hsweeten@visionengravers.com> Description: Sets the PWM signal period in nanoseconds. What: /sys/class/pwm/pwmchip<N>/pwmX/duty_cycle Date: May 2013 KernelVersion: 3.11 Contact: H Hartley Sweeten <hsweeten@visionengravers.com> Description: Sets the PWM signal duty cycle in nanoseconds. What: /sys/class/pwm/pwmchip<N>/pwmX/polarity Date: May 2013 KernelVersion: 3.11 Contact: H Hartley Sweeten <hsweeten@visionengravers.com> Description: Sets the output polarity of the PWM signal to "normal" or "inversed". What: /sys/class/pwm/pwmchip<N>/pwmX/enable Date: May 2013 KernelVersion: 3.11 Contact: H Hartley Sweeten <hsweeten@visionengravers.com> Description: Enable/disable the PWM signal. 0 is disabled 1 is enabled What: /sys/class/pwm/pwmchip<N>/pwmX/capture Date: June 2016 KernelVersion: 4.8 Contact: Lee Jones <lee@kernel.org> Description: Capture information about a PWM signal. The output format is a pair unsigned integers (period and duty cycle), separated by a single space. |