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Message-ID: <20110401165328.20091msct39m3en4@webmail.df.eu>
Date: Fri, 01 Apr 2011 16:53:28 +0200
From: Michael Riesch <michael@...sch.at>
To: netdev@...r.kernel.org
Cc: David Miller <davem@...emloft.net>
Subject: Driver for Asix AX88172A only?
Habidere,
I'm currently working on a driver for the Asix AX88172A
USB-to-Ethernet chip[1]. It has an Ethernet PHY on-chip, but can work
with an external PHY as well. Also, the chip provides various
interfaces (SPI or I2C/UART) and GPIOs.
I have already tried out the asix.c mainline driver, which works with
the evaluation board. As soon as you add the device-IDs, the driver
works with the AX88172A's internal PHY. Because I would like to get it
run with an external PHY (and use the SPI feature), I have also tried
out the Asix vendor driver. It didn't like my 2.6.38-rc7+ kernel
(2.6.35 worked), it does not have any "external PHY mode" and it
supports SPI, I2C.. via ioctls.
Long story short, I want a nice mainline driver. I have heard there is
some thinking about feeding the vendor code into the kernel[2], I
would like to support that.
My TODO includes:
* support of an external PHY connected via MII
* support of the SPI interface via the SPI subsystem
* GPIO control via sysfs (is that a nice way?!)
* use of phylib
What do you think: should the mainline driver be adapted to support
the AX88172A (with all his features) or a new driver for the AX88172A
only should be created (probably based on the existing mainline driver).
Looking forward to your comments,
Michael
[1] http://www.asix.com.tw/products.php?op=pItemdetail&PItemID=97;71;101
[2] http://marc.info/?t=130013910200004&r=1&w=2
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