diff options
| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2023-09-11 17:44:54 +0200 |
|---|---|---|
| committer | Thierry Reding <thierry.reding@gmail.com> | 2023-10-13 10:07:18 +0200 |
| commit | 8151b37b418310c83f133a9ea8ec2a654fb30d20 (patch) | |
| tree | 12a6c28ffa05a666cf0bf23f92ff48d031e77c23 /Documentation | |
| parent | pwm: dwc: add PWM bit unset in get_state call (diff) | |
| download | linux-8151b37b418310c83f133a9ea8ec2a654fb30d20.tar.xz linux-8151b37b418310c83f133a9ea8ec2a654fb30d20.zip | |
pwm: Adapt sysfs API documentation to reality
Most low-level PWM drivers support duty_cycle == period, and so does the
sysfs API. Also polarity can be changed for enabled PWMs since commit
39100ceea79f ("pwm: Switch to the atomic API").
Reported-by: Jens Gehrlein <J.Gehrlein@eckelmann.de>
Link: https://lore.kernel.org/r/20230911154454.675057-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/driver-api/pwm.rst | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/driver-api/pwm.rst b/Documentation/driver-api/pwm.rst index 3fdc95f7a1d1..bb264490a87a 100644 --- a/Documentation/driver-api/pwm.rst +++ b/Documentation/driver-api/pwm.rst @@ -111,13 +111,13 @@ channel that was exported. The following properties will then be available: duty_cycle The active time of the PWM signal (read/write). - Value is in nanoseconds and must be less than the period. + Value is in nanoseconds and must be less than or equal to the period. polarity Changes the polarity of the PWM signal (read/write). Writes to this property only work if the PWM chip supports changing - the polarity. The polarity can only be changed if the PWM is not - enabled. Value is the string "normal" or "inversed". + the polarity. + Value is the string "normal" or "inversed". enable Enable/disable the PWM signal (read/write). |