lkml.org 
[lkml]   [2020]   [Jan]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC net-next 6/8] net: phylink: Configure MAC/PCS when link is up without PHY
On Mon, Jan 27, 2020 at 03:00:38PM +0100, Andrew Lunn wrote:
> > Yes, I realise that, but it comes with the expense of potentially
> > breaking mvneta and mvpp2, where the settings are automatically
> > passed between the PCS and MAC in hardware. I also believe DSA
> > works around this, and I need to look at that.
>
> Hi Russell
>
> The mv88e6xxx driver has code for when SGMII is used. It transfers the
> negotiated speed from the PCS to the MAC.
>
> But it recently turned out something like this is also needed for
> other link modes involving the SERDES. It used to work, i think
> because Phylink would initially configure the MAC approximately right,
> or the mv88e6xxx driver was looking at phylink state it should not.
> But it no longer works.

Can you give a hint which platform this is and how to reproduce it
please?

--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up
According to speedtest.net: 11.9Mbps down 500kbps up

\
 
 \ /
  Last update: 2020-01-27 15:09    [W:1.289 / U:0.008 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site