Subject: Re: [PATCH net] Revert "net/mlx5: Update cyclecounter shift value to improve ptp free running mode precision"

From: Saeed Mahameed <[email-masked]>
Date: Thu, 17 Aug 2023 09:37:18 -0700

On 16 Aug 19:38, Jakub Kicinski wrote:
>On Tue, 15 Aug 2023 08:15:07 -0700 Vadim Fedorenko wrote:
>> From: Vadim Fedorenko <[email-masked]>
>>
>> This reverts commit 6a40109275626267ebf413ceda81c64719b5c431.
>>
>> There was an assumption in the original commit that all the devices
>> supported by mlx5 advertise 1GHz as an internal timer frequency.
>> Apparently at least ConnectX-4 Lx (MCX4431N-GCAN) provides 156.250Mhz
>> as an internal frequency and the original commit breaks PTP
>> synchronization on these cards.
>
>Hi Saeed, any preference here? Given we're past -rc6 and the small
>size of the revert it seems like a tempting solution?

Rahul's solution is also very small and already passed review, we will be
conducting some tests, share the patch with Vadim for testing and I will be
submitting it early next week.