linux-kernel - Re: [PATCH v7 0/3] dsa: marvell: Add support for mv88e6071 and 6020 switches

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Date:   Mon, 29 May 2023 13:03:14 +0200
From:   Lukasz Majewski <lukma@...x.de>
To:     Vladimir Oltean <olteanv@...il.com>
Cc:     Andrew Lunn <andrew@...n.ch>, Russell King <linux@...linux.org.uk>,
        Eric Dumazet <edumazet@...gle.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Alexander Duyck <alexander.duyck@...il.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7 0/3] dsa: marvell: Add support for mv88e6071 and 6020
 switches

Hi Vladimir,

> Hello Lukasz,
> 
> On Mon, May 29, 2023 at 11:02:22AM +0200, Lukasz Majewski wrote:
> > Dear All,
> >   
> > > After the commit (SHA1: 7e9517375a14f44ee830ca1c3278076dd65fcc8f);
> > > "net: dsa: mv88e6xxx: fix max_mtu of 1492 on 6165, 6191, 6220,
> > > 6250, 6290" the error when mv88e6020 or mv88e6071 is used is not
> > > present anymore.
> > >   
> > 
> > Are there any more comments for this patch set?  
> 
> Has your email client eaten these comments too?
> 
> https://lore.kernel.org/netdev/c39f4127-e1fe-4d38-83eb-f372ca2ebcd3@lunn.ch/
> | On Wed, May 24, 2023 at 03:48:02PM +0200, Andrew Lunn wrote:
> | > > > Vladimir indicates here that it is not known how to change
> the max MTU | > > > for the MV88E6250. Where did you get the
> information from to implement | > > > it?
> | > > 
> | > > Please refer to [1].
> | > > 
> | > > The mv88e6185_g1_set_max_frame_size() function can be reused (as
> | > > registers' offsets and bits are the same for mv88e60{71|20}).
> | > 
> | > So you have the datasheet? You get the information to implement
> this | > from the data sheet?
> | > 

This I've replied to Andrew in a private mail.

> | >      Andrew
> 
> https://lore.kernel.org/netdev/ZG4E+wd03cKipsib@shell.armlinux.org.uk/
> | On Wed, May 24, 2023 at 01:37:15PM +0100, Russell King (Oracle)
> wrote: | > On Wed, May 24, 2023 at 02:17:43PM +0200, Lukasz Majewski
> wrote: | > > Please refer to [1].
> | > > 
> | > > The mv88e6185_g1_set_max_frame_size() function can be reused (as
> | > > registers' offsets and bits are the same for mv88e60{71|20}).
> | > > 
> | > > After using Vladimir's patch there is no need to add max_frame
> size | > > field and related patches from v6 can be dropped.
> | > 
> | > However, you haven't responded to:
> | > 
> | >
> https://lore.kernel.org/all/ZGzP0qEjQkCFnXnr@shell.armlinux.org.uk/ |
> > | > to explain why what you're doing (adding this function) is safe.
> | > 
> | > Thanks.
> | > 

The above question has been replied:
https://lore.kernel.org/all/20230524145357.3928f261@wsk/

> | > -- 
> | > RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
> | > FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!

Do you have any more comments?


Best regards,

Lukasz Majewski

--

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