netdev - Re: [PATCH net-next v3 3/3] net: stmmac: Add PCI driver support for BCM8958x

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Message-ID: <5ff4a297-bafd-4b33-aae1-5a983f49119a@lunn.ch>
Date: Fri, 9 Aug 2024 22:12:10 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Jitendra Vegiraju <jitendra.vegiraju@...adcom.com>
Cc: netdev@...r.kernel.org, alexandre.torgue@...s.st.com,
	joabreu@...opsys.com, davem@...emloft.net, edumazet@...gle.com,
	kuba@...nel.org, pabeni@...hat.com, mcoquelin.stm32@...il.com,
	bcm-kernel-feedback-list@...adcom.com, richardcochran@...il.com,
	ast@...nel.org, daniel@...earbox.net, hawk@...nel.org,
	john.fastabend@...il.com, linux-kernel@...r.kernel.org,
	linux-stm32@...md-mailman.stormreply.com,
	linux-arm-kernel@...ts.infradead.org, bpf@...r.kernel.org,
	linux@...linux.org.uk, horms@...nel.org,
	florian.fainelli@...adcom.com
Subject: Re: [PATCH net-next v3 3/3] net: stmmac: Add PCI driver support for
 BCM8958x

On Thu, Aug 08, 2024 at 06:54:51PM -0700, Jitendra Vegiraju wrote:
> On Tue, Aug 6, 2024 at 4:15 PM Andrew Lunn <andrew@...n.ch> wrote:
> >
> > On Mon, Aug 05, 2024 at 05:56:43PM -0700, Jitendra Vegiraju wrote:
> > > On Fri, Aug 2, 2024 at 4:08 PM Andrew Lunn <andrew@...n.ch> wrote:
> > > >
> > > > > Management of integrated ethernet switch on this SoC is not handled by
> > > > > the PCIe interface.
> > > >
> > > > MDIO? SPI? I2C?
> > > >
> > > The device uses SPI interface. The switch has internal ARM M7 for
> > > controller firmware.
> >
> > Will there be a DSA driver sometime soon talking over SPI to the
> > firmware?
> >
> Hi Andrew,

So the switch will be left in dumb switch everything to every port
mode? Or it will be totally autonomous using the in build firmware?

What you cannot expect is we allow you to manage the switch from Linux
using something other than an in kernel driver, probably DSA or pure
switchdev.

	Andrew