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Message-ID: <trinity-c8924d31-5582-4174-b017-553e64864079-1686678740313@3c-app-gmx-bap45>
Date: Tue, 13 Jun 2023 19:52:20 +0200
From: Frank Wunderlich <frank-w@...lic-files.de>
To: Vladimir Oltean <olteanv@...il.com>
Cc: Arınç ÜNAL <arinc.unal@...nc9.com>, Daniel
 Golle <daniel@...rotopia.org>, Landen Chao <Landen.Chao@...iatek.com>, DENG
 Qingfang <dqfext@...il.com>, Sean Wang <sean.wang@...iatek.com>, Andrew
 Lunn <andrew@...n.ch>, Florian Fainelli <f.fainelli@...il.com>, "David S.
 Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub
 Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Matthias
 Brugger <matthias.bgg@...il.com>, AngeloGioacchino Del Regno
 <angelogioacchino.delregno@...labora.com>, Russell King
 <linux@...linux.org.uk>, Bartel Eerdekens <bartel.eerdekens@...stell8.be>,
 mithat.guner@...ont.com, erkin.bozoglu@...ont.com,
 linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org
Subject: Aw: Re: [PATCH net v2 2/7] net: dsa: mt7530: fix trapping frames
 with multiple CPU ports on MT7530

Hi

> Gesendet: Dienstag, 13. Juni 2023 um 19:18 Uhr
> Von: "Vladimir Oltean" <olteanv@...il.com>

> On Tue, Jun 13, 2023 at 08:14:35PM +0300, Arınç ÜNAL wrote:
> > Actually, having only "net: dsa: introduce preferred_default_local_cpu_port
> > and use on MT7530" backported is an enough solution for the current stable
> > kernels.
> > 
> > When multiple CPU ports are defined on the devicetree, the CPU_PORT bits
> > will be set to port 6. The active CPU port will also be port 6.
> > 
> > This would only become an issue with the changing the DSA conduit support.
> > But that's never going to happen as this patch will always be on the kernels
> > that support changing the DSA conduit.
> 
> Aha, ok. I thought that device trees with CPU port 5 exclusively defined
> also exist in the wild. If not, and this patch fixes a theoretical only
> issue, then it is net-next material.

BananaPi R2Pro (Rockchip rk3568 arm64) has currently port5 only. And there only port5
is connected to the SoC (so port6 is not added there).

Most boards using port6 at the moment.

regards Frank

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