Re: serial: 8250 fails to detect Exar XR16L2551 correctly

From: Russell King
Date: Mon Jul 11 2005 - 14:59:21 EST


On Mon, Jul 11, 2005 at 01:00:08PM -0600, Alex Williamson wrote:
> On Thu, 2005-07-07 at 14:20 +0100, David Vrabel wrote:
>
> > I've redid the patch and added a check for this. Alex, could you test
> > this version, please.
>
> This detects the A2 ST16C255x as an XR16550, so apparently the sleep
> check doesn't work. I contacted Exar about these two seemingly
> identical UARTs, and they say that the A2 ST16C255x should be compatible
> with the XR16550 so perhaps we don't need to special case the A2 UART at
> all. Unfortunately, when I use the UART for a console, I get garbled
> output from the time the UART is detected until we hit userspace.

There was a bug in this area - does it happen with latest and greatest
kernels?

--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of: 2.6 Serial core
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