linux-kernel - Re: [PATCH] arm: clk: Add ETH switch clock description for vf610 SoC

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Message-ID: <20250220170511.719a1cac@wsk>
Date: Thu, 20 Feb 2025 17:05:11 +0100
From: Lukasz Majewski <lukma@...x.de>
To: Andrew Lunn <andrew@...n.ch>
Cc: Abel Vesa <abelvesa@...nel.org>, Peng Fan <peng.fan@....com>, Michael
 Turquette <mturquette@...libre.com>, Stephen Boyd <sboyd@...nel.org>, Shawn
 Guo <shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>,
 Pengutronix Kernel Team <kernel@...gutronix.de>, Fabio Estevam
 <festevam@...il.com>, Rob Herring <robh@...nel.org>, Krzysztof Kozlowski
 <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>,
 linux-clk@...r.kernel.org, imx@...ts.linux.dev,
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
 devicetree@...r.kernel.org
Subject: Re: [PATCH] arm: clk: Add ETH switch clock description for vf610
 SoC

Hi Andrew,

> > > Seems like a reasonable compromise. You would only load this
> > > driver if you intend to make use of the switch...  
> > 
> > Yes, the main use case would be the switch (after bridge ... command
> > called).
> > 
> > However, until then we shall? have port separation.  
> 
> Yes. The model Linux uses is that the ports are individual interfaces
> to start with. We should keep to that model.

+1

> 
> > > MoreThanIP is now part of Synopsys. I wounder if this IP now
> > > exists in other SoCs? The press release however suggests Synopsys
> > > was interesting in the high speed interfaces, not a two ports Fast
> > > Ethernet switch.  
> > 
> > I would need some detailed documentation....  
> 
> Which is probably not available. You might be able to get some clues
> from the Freescale datasheets, if they have kept the address spaces
> separated. I don't see it as a strong requirement, given how old this
> IP is, and the limited interest in supporting it over the years, My
> guess is, nobody else uses it.

:-)

> 
> 	Andrew




Best regards,

Lukasz Majewski

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