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Date: Wed, 17 Feb 2021 15:07:18 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: Arnd Bergmann <arnd@...nel.org>
Cc: Min Li <min.li.xe@...esas.com>,
Derek Kiernan <derek.kiernan@...inx.com>,
Dragan Cvetic <dragan.cvetic@...inx.com>,
Arnd Bergmann <arnd@...db.de>,
gregkh <gregkh@...uxfoundation.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
Networking <netdev@...r.kernel.org>,
Richard Cochran <richardcochran@...il.com>
Subject: Re: [PATCH net-next] misc: Add Renesas Synchronization Management
Unit (SMU) support
On Wed, 17 Feb 2021 22:30:14 +0100 Arnd Bergmann wrote:
> On Wed, Feb 17, 2021 at 9:20 PM Min Li <min.li.xe@...esas.com> wrote:
> > I attached the G.8273.2 document, where chapter 6 is about supporting physical layer
> > frequency. And combo mode is Renesas way to support this requirement. Other companies
> > may come up with different ways to support it.
> >
> > When EEC quality is below certain level, we would wanna turn off combo mode.
>
> Maybe this is something that could be handled inside of the device driver then?
>
> If the driver can use the same algorithm that is in your user space software
> today, that would seem to be a nicer way to handle it than requiring a separate
> application.
Other points sound more time than networking, so no suggestions
from me, but on using PHC for L1 freq - that seems like a good
fit for ethtool?
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