[Linux-stm32] [RFC net-next 6/8] net: phylink: Configure MAC/PCS when link is up without PHY

[Russell King - ARM Linux admin]

On Mon, Jan 27, 2020 at 11:38:05AM +0000, Jose Abreu wrote:
> From: Russell King - ARM Linux admin <linux at armlinux.org.uk>
> Date: Jan/27/2020, 11:21:02 (UTC+00:00)
> 
> > On Mon, Jan 27, 2020 at 12:09:11PM +0100, Jose Abreu wrote:
> > > When we don't have any real PHY driver connected and we get link up from
> > > PCS we shall configure MAC and PCS for the desired speed and also
> > > resolve the flow control settings from MAC side.
> > 
> > This is certainly the wrong place for it.  Please hold off on this patch
> > for the time being.  Thanks.
> 
> This is actually the change that makes everything work ...
> 
> I need to configure PCS before Aneg is complete and then I need to 
> configure MAC once Aneg is done and link is up with the outcome speed and 
> flow control.

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.

However, right now I'm in the middle of rebasing my git tree on
top of v5.5 and can't say much more until I've finished that.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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