From: Andrew Lunn <andrew@lunn.ch>
To: Corentin Labbe <clabbe.montjoie@gmail.com>
Cc: jacmet@sunsite.dk, davem@davemloft.net, netdev@vger.kernel.org,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [BUG] net: dm9600: false link status
Date: Mon, 1 Jul 2019 15:29:18 +0200 [thread overview]
Message-ID: <20190701132918.GA25795@lunn.ch> (raw)
In-Reply-To: <20190701122050.GA11021@Red>
> But thoses chips should have marking (according to some photos on
> the web), so I probably own a counterfeiting of a
> clone/counterfeiting.
> At least, now i know that have a chip not designed to work with an external PHY, so all EXTPHY registers could be ignored.
> My last ressort is to brute force all values until something happen.
Does the rest of this work? You can actually transmit/receive frames,
but it is a 10/Half? So the MAC is working, just the PHY is missing?
> My simple tries, write 0xsomeval everywhere, lead to something, phy/eeprom return now 0x000y.
> Probably, this chip doesnt have any PHY...
If you look at dm9601_mdio_write() and dm9601_mdio_read() it always
passes 1. 0 is used for the EEPROM, at least in a real device. so try
1-31 and see if you get anything interesting.
Andrew
prev parent reply other threads:[~2019-07-01 13:29 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-27 13:21 [BUG] net: dm9600: false link status Corentin Labbe
2019-06-27 14:43 ` Andrew Lunn
2019-07-01 12:20 ` Corentin Labbe
2019-07-01 13:29 ` Andrew Lunn [this message]
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