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Message-ID: <20230816193822.1a0c2b0c@kernel.org> Date: Wed, 16 Aug 2023 19:38:22 -0700 From: Jakub Kicinski <kuba@...nel.org> To: Saeed Mahameed <saeedm@...dia.com> Cc: Vadim Fedorenko <vadfed@...a.com>, Rahul Rameshbabu <rrameshbabu@...dia.com>, Gal Pressman <gal@...dia.com>, Bar Shapira <bshapira@...dia.com>, Vadim Fedorenko <vadim.fedorenko@...ux.dev>, Richard Cochran <richardcochran@...il.com>, <netdev@...r.kernel.org> Subject: Re: [PATCH net] Revert "net/mlx5: Update cyclecounter shift value to improve ptp free running mode precision" On Tue, 15 Aug 2023 08:15:07 -0700 Vadim Fedorenko wrote: > From: Vadim Fedorenko <vadim.fedorenko@...ux.dev> > > 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?
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