From: Sergei Shtylyov <sergei.shtylyov@gmail.com>
To: Alexandru Tachici <alexandru.tachici@analog.com>,
linux-kernel@vger.kernel.org
Cc: andrew@lunn.ch, linux@armlinux.org.uk, davem@davemloft.net,
edumazet@google.com, kuba@kernel.org, pabeni@redhat.com,
netdev@vger.kernel.org, steve.glendinning@shawell.net,
UNGLinuxDriver@microchip.com, andre.edich@microchip.com,
linux-usb@vger.kernel.org
Subject: Re: [net] net: usb: smsc95xx: fix external PHY reset
Date: Mon, 14 Nov 2022 14:43:22 +0300 [thread overview]
Message-ID: <adb2dc3c-fd1e-53ea-ca64-5c1600058890@gmail.com> (raw)
In-Reply-To: <20221114131643.19450-1-alexandru.tachici@analog.com>
Hello!
On 11/14/22 4:16 PM, Alexandru Tachici wrote:
> An external PHY needs settling time after power up or reser.
Reset? :-)
> In the bind() function an mdio bus is registered. If at this point
> the external PHY is still initialising, no valid PHY ID will be
> read and on phy_find_first() the bind() function will fail.
>
> If an external PHY is present, wait the maximum time specified
> in 802.3 45.2.7.1.1.
>
> Fixes: 05b35e7eb9a1 ("smsc95xx: add phylib support")
> Signed-off-by: Alexandru Tachici <alexandru.tachici@analog.com>
[...]
MBR, Sergey
prev parent reply other threads:[~2022-11-14 11:43 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-14 13:16 Alexandru Tachici
2022-11-14 11:31 ` Russell King (Oracle)
2022-11-14 11:43 ` Sergei Shtylyov [this message]
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