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From: "Markus Stockhausen" <markus.stockhausen@gmx.de>
To: "'Jonas Jelonek'" <jonas@jonasjelonek.de>,
	"'Andrew Lunn'" <andrew@lunn.ch>,
	"'Heiner Kallweit'" <hkallweit1@gmail.com>,
	"'Russell King'" <linux@armlinux.org.uk>,
	"'David S . Miller'" <davem@davemloft.net>,
	"'Eric Dumazet'" <edumazet@google.com>,
	"'Jakub Kicinski'" <kuba@kernel.org>,
	"'Paolo Abeni'" <pabeni@redhat.com>, <netdev@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>
Subject: AW: [PATCH net] net: mdio: realtek-rtl9300: fix RTL931x C22 extended page selection
Date: Sat, 19 Sep 2026 09:08:19 +0200	[thread overview]
Message-ID: <004e01dd4805$a804b4e0$f80e1ea0$@gmx.de> (raw)
In-Reply-To: <20260918211955.3955777-1-jonas@jonasjelonek.de>

> Von: Jonas Jelonek <jonas@jonasjelonek.de> 
> Gesendet: Freitag, 18. September 2026 23:20
> Betreff: [PATCH net] net: mdio: realtek-rtl9300: fix RTL931x C22 extended
page selection
>
> The RTL931x indirect access engine has a separate nine-bit extended page
> field. The driver leaves it at zero, and otto_emdio_run_cmd() therefore
> programs extended page zero for every Clause 22 transaction. This
> overrides page selection made through PHY register 30, causing accesses
> to private PHY pages to hit extended page zero instead.
>
> Set the field to its 0x1ff "do not change" value for RTL931x Clause 22
> reads and writes. This preserves extended page selection made through
> PHY register 30 and restores access to its private register pages.
>
> Fixes: 5ebdcac59aff ("net: mdio: realtek-rtl9300: Add support for
RTL931x")
> Signed-off-by: Jonas Jelonek <jonas@jonasjelonek.de>

Acked-by: Markus Stockhausen <markus.stockhausen@gmx.de>



  reply	other threads:[~2026-09-19  7:08 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-18 21:19 [PATCH net] net: mdio: realtek-rtl9300: fix RTL931x C22 extended page selection Jonas Jelonek
2026-09-19  7:08 ` Markus Stockhausen [this message]
2026-09-24  2:10 ` patchwork-bot+netdevbpf

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