From: Vladimir Oltean <olteanv@gmail.com>
To: Linus Walleij <linusw@kernel.org>
Cc: Andrew Lunn <andrew@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Woojung Huh <woojung.huh@microchip.com>,
UNGLinuxDriver@microchip.com, netdev@vger.kernel.org
Subject: Re: [PATCH net v4 3/4] net: dsa: ks8955: Delete KSZ8864 and KSZ8795 support
Date: Thu, 26 Mar 2026 12:21:43 +0200 [thread overview]
Message-ID: <20260326102143.hh3g6oo2jp22i6ps@skbuf> (raw)
In-Reply-To: <20260326-ks8995-fixups-v4-3-989abba8f077@kernel.org> <20260326-ks8995-fixups-v4-3-989abba8f077@kernel.org>
On Thu, Mar 26, 2026 at 10:57:34AM +0100, Linus Walleij wrote:
> After studying the datasheets for a bit, I can conclude that
> the register maps for the two KSZ variants explicitly said to
> be supported by this driver are fully supported by the newer
> Micrel KSZ driver, including full VLAN support and a different
> custom tag than what the KS8995 is using.
And more importantly: support for the internal PHYs? Tristram pointed
out here that this is is missing
https://lore.kernel.org/netdev/DM3PR11MB87361761E911D6EAA0311DF2EC44A@DM3PR11MB8736.namprd11.prod.outlook.com/
I was curious how you are avoiding that issue?
>
> Delete this support, users should be using the KSZ driver
> CONFIG_NET_DSA_MICROCHIP_KSZ_SPI and any new device trees should
> use:
> micrel,ksz8864 -> microchip,ksz8864
> micrel,ksz8795 -> microchip,ksz8795
>
> Apparently Microchip acquired Micrel at some point and this
> created the confusion.
>
> Fixes: a7fe8b266f65 ("net: dsa: ks8995: Add basic switch set-up")
> Reported-by: Vladimir Oltean <olteanv@gmail.com>
> Signed-off-by: Linus Walleij <linusw@kernel.org>
> ---
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
next prev parent reply other threads:[~2026-03-26 10:21 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-26 9:57 [PATCH net v4 0/4] net: dsa: ks8995: Post-move fixes Linus Walleij
2026-03-26 9:57 ` [PATCH net v4 1/4] net: dsa: ks8995: Add shutdown callback Linus Walleij
2026-03-26 10:03 ` Vladimir Oltean
2026-03-26 9:57 ` [PATCH net v4 2/4] net: dsa: microchip: Add fallback Micrel compatibles Linus Walleij
2026-03-26 10:11 ` Vladimir Oltean
2026-03-26 9:57 ` [PATCH net v4 3/4] net: dsa: ks8955: Delete KSZ8864 and KSZ8795 support Linus Walleij
2026-03-26 10:21 ` Vladimir Oltean [this message]
2026-03-26 9:57 ` [PATCH net v4 4/4] net: dsa: ks8995: Add stub bridge join/leave Linus Walleij
2026-03-26 10:26 ` Vladimir Oltean
2026-03-26 10:02 ` [PATCH net v4 0/4] net: dsa: ks8995: Post-move fixes Vladimir Oltean
2026-03-26 10:06 ` Vladimir Oltean
2026-03-26 10:33 ` Vladimir Oltean
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