From: Uwe Kleine-König Date: Mon, 11 Sep 2023 15:44:54 +0000 (+0200) Subject: pwm: Adapt sysfs API documentation to reality X-Git-Tag: v6.7-rc1~28^2~16 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=8151b37b418310c83f133a9ea8ec2a654fb30d20;p=thirdparty%2Flinux.git 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 Link: https://lore.kernel.org/r/20230911154454.675057-1-u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König Signed-off-by: Thierry Reding --- diff --git a/Documentation/driver-api/pwm.rst b/Documentation/driver-api/pwm.rst index 3fdc95f7a1d15..bb264490a87a1 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).