Re: [PATCH net-next 2/4] dpll: zl3073x: add PTP clock support
From: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Date: 2026-07-10 13:08:39
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On 08/07/2026 18:05, Ivan Vecera wrote:
Add PTP clock support for the ZL3073x DPLL driver. A PTP clock device is registered for each DPLL channel that is in NCO mode, providing gettimex64, settime64, adjtime, adjfine and perout callbacks.
Here we come back to the discussion of NCO mode. Is DPLL channel actually a pin (virtual or physical)? If it's not, then it means that channel is exposed as independent DPLL device, that shouldn't affect other devices, but AFAIU, it can in the current implementation. If it is a pin, why do you check device's mode rather then pins? And another question - what happens when channel changes its mode to non-NCO? Do we have ptp device disappearing from the system?