linux-kernel - RE: [PATCH net-next 6/6 v2] net: dsa: microchip: Setup fiber ports for KSZ8463

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Message-ID:
 <DM3PR11MB8736EEBC7BC57DA69DA56218EC4EA@DM3PR11MB8736.namprd11.prod.outlook.com>
Date: Tue, 8 Jul 2025 19:41:45 +0000
From: <Tristram.Ha@...rochip.com>
To: <andrew@...n.ch>
CC: <Woojung.Huh@...rochip.com>, <olteanv@...il.com>, <robh@...nel.org>,
	<krzk+dt@...nel.org>, <conor+dt@...nel.org>, <davem@...emloft.net>,
	<edumazet@...gle.com>, <kuba@...nel.org>, <pabeni@...hat.com>,
	<marex@...x.de>, <UNGLinuxDriver@...rochip.com>,
	<devicetree@...r.kernel.org>, <netdev@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: RE: [PATCH net-next 6/6 v2] net: dsa: microchip: Setup fiber ports
 for KSZ8463

> > The fiber ports in KSZ8463 cannot be detected internally, so it requires
> > specifying that condition in the device tree.  Like the one used in
> > Micrel PHY the port link can only be read and there is no write to the
> > PHY.  The driver programs registers to operate fiber ports correctly.
> >
> > The PTP function of the switch is also turned off as it may interfere the
> > normal operation of the MAC.
> 
> Is this PTP problem anything to do with fibre?
> 
> It seems like this should be a patch of its own, unless it does have
> something to do with fibre.

This is kind of the initial setup operation for KSZ8463.  I can break it
up into 2 patches.