Multiport Serial Device Support - Exar XR17L154

From: Chris Grzegorczyk
Date: Fri Mar 12 2004 - 03:16:28 EST

I have failed to find reference to this particular
device anywhere beside Exar:

[1] Exar XR17L154
Note: The page indicates that "A Linux driver is also
available.", but I can't seem to get my hands on it.

[2] System:
PC104 / Intel PIIX Compatible
16MB CompactFlash
Celeron 1.2Ghz @ 800Mhz
2.4.25 / 2.6.3

I have noted support for the Exar ST16C555/XR16... in
char/serial.c, however, the XR17L154 differs in that
it has a 32 bit interface ( linear addressing ) with
all 4 UARTs on the same IRQ. My attempts to have the
kernel recognize the device have failed.

Is there a chance of having this device work under the
stock kernel ( 2.4.25 )?

If not, can someone suggest an existing multiport
driver which could serve as a reasonable starting
point for development by a kernel newbie?

TAI, greatly appreciated.


p.s. Please CC in replies as I am not subscribed.

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