> I would like to keep the default values. With default values, you can > get PTP working (accuracy is not great - but it is much better than > if set to zero). > > There is no risk of bootloaders to pre-load other values, as the kernel > will reset the PHY, and after reset we will be back to these numbers. O.K, that is what i wanted to know. It should be reasonable safe to assume these values, and userspace daemons can apply whatever correction they want, assuming this is what the hardware is doing. Andrew