On Thu, Jul 24, 2025 at 02:56:56PM +0300, David Arinzon wrote:

The first objective focuses on the use case where the PHC device
is fully managed. The ENA driver, for example, exposes a PHC
device, whose synchronization status and quality is maintained
without any user-space application. This new ioctl reports on the
clock accuracy and status of the PHC device to user-space
applications, where ptp4l and similar are not available.

This seems pretty rare.  I can't think of any other hardware that
makes claims about synchronization quality.

So this ioctl would be just for one device.

Thanks,
Richard