Re: [Patch net-next v7 04/13] net: dsa: microchip: ptp: manipulating absolute time using ptp hw clock

[Vladimir Oltean]

On Wed, Jan 04, 2023 at 02:13:07PM +0530, Arun Ramadoss wrote:
> From: Christian Eggers <ceggers@xxxxxxx>
> 
> This patch is used for reconstructing the absolute time from the 32bit
> hardware time stamping value. The do_aux ioctl is used for reading the
> ptp hardware clock and store it to global variable.
> The timestamped value in tail tag during rx and register during tx are
> 32 bit value (2 bit seconds and 30 bit nanoseconds). The time taken to
> read entire ptp clock will be time consuming. In order to speed up, the
> software clock is maintained. This clock time will be added to 32 bit
> timestamp to get the absolute time stamp.
> 
> Signed-off-by: Christian Eggers <ceggers@xxxxxxx>
> Co-developed-by: Arun Ramadoss <arun.ramadoss@xxxxxxxxxxxxx>
> Signed-off-by: Arun Ramadoss <arun.ramadoss@xxxxxxxxxxxxx>
> ---

Reviewed-by: Vladimir Oltean <olteanv@xxxxxxxxx>