linux-kernel - Re: [RFC PATCH 00/10] net: dsa: b53: fix BCM5325 support

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Message-ID: <CAOiHx==xHwHtCKb+s-RChoJ5HxXvqTOOLm8ib0oq0bVKr4qwnA@mail.gmail.com>
Date: Mon, 2 Jun 2025 22:14:12 +0200
From: Jonas Gorski <jonas.gorski@...il.com>
To: Álvaro Fernández Rojas <noltari@...il.com>
Cc: florian.fainelli@...adcom.com, andrew@...n.ch, olteanv@...il.com, 
	davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com, 
	vivien.didelot@...il.com, netdev@...r.kernel.org, 
	linux-kernel@...r.kernel.org, dgcbueu@...il.com
Subject: Re: [RFC PATCH 00/10] net: dsa: b53: fix BCM5325 support

On Sat, May 31, 2025 at 12:13 PM Álvaro Fernández Rojas
<noltari@...il.com> wrote:
>
> These patches get the BCM5325 switch working with b53.
>
> There are still some sporadic errors related to FDB, but at least the
> switch is working now:
> bcm53xx fffe4800.ethernet-mii:1e: port 0 failed to add d6:67:0c:XX:XX:XX vid 1 to fdb: -28
> bcm53xx fffe4800.ethernet-mii:1e: port 0 failed to add 5c:4c:a9:XX:XX:XX vid 0 to fdb: -28
> bcm53xx fffe4800.ethernet-mii:1e: port 0 failed to add 5c:4c:a9:XX:XX:XX vid 1 to fdb: -28
> bcm53xx fffe4800.ethernet-mii:1e: port 0 failed to delete d6:67:0c:XX:XX:XX vid 1 from fdb: -2
>
> I'm not really sure that everything here is correct since I don't work for
> Broadcom and all this is based on the public datasheet available for the
> BCM5325 and my own experiments with a Huawei HG556a (BCM6358).

The number of buckets is wrong for 5325, and it actually has only half
of that: "The address table is organized into 512 buckets with two
entries in each bucket."

Might be related, might be not.

Regards,
Jonas