diff options
| author | Jacob Keller <jacob.e.keller@intel.com> | 2012-11-01 12:30:16 +0000 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2012-12-06 11:20:18 +0000 |
| commit | deb4856fc4353f1510dff0628d9c98f84709733d (patch) | |
| tree | 29bbf34dd378cc3c44f7a6298a2112e0c129aeee /include | |
| parent | 23da2a1f5e79c95dbae9c88848b57e39af80b326 (diff) | |
ptp: update adjfreq callback description
commit 87f4d7c1d36f44b0822053b7e5dedc31fdd0ab99 upstream.
This patch updates the adjfreq callback description to include a note that the
delta in ppb is always relative to the base frequency, and not to the current
frequency of the hardware clock.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
CC: Richard Cochran <richard.cochran@gmail.com>
CC: John Stultz <john.stultz@linaro.org>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/ptp_clock_kernel.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/ptp_clock_kernel.h b/include/linux/ptp_clock_kernel.h index dd2e44fba63e..9d709d18c3b1 100644 --- a/include/linux/ptp_clock_kernel.h +++ b/include/linux/ptp_clock_kernel.h @@ -50,7 +50,8 @@ struct ptp_clock_request { * clock operations * * @adjfreq: Adjusts the frequency of the hardware clock. - * parameter delta: Desired period change in parts per billion. + * parameter delta: Desired frequency offset from nominal frequency + * in parts per billion * * @adjtime: Shifts the time of the hardware clock. * parameter delta: Desired change in nanoseconds. |