On Thursday 17 May 2007 03:45:36 am Maciej W. Rozycki wrote:
> On Wed, 16 May 2007, Bjorn Helgaas wrote:
> > > Given the generic name of "uart" I am assuming this will work with any
> > > UART driver making use of the serial_core.c core -- am I correct?
> >
> > I knew somebody would ask that eventually :-)
> >
> > Unfortunately, the answer is "no." "console=uart" only works with
> > 8250-compatible devices.
>
> But is it a design limitation or is it just that other UART drivers have
> to be modified to work with this option? My point is if the former, then
> the option should be something like "console=8250" (the right-hand side
> being the name of the driver involved; others may want to add support for
> other drivers). If the latter, then it's fine as is as other UART drivers
> may be wired to this code as a need arises.
"console=8250" probably would have been a better choice. I think
this could be changed without too much hassle.
It might be possible to extend "console=uart" so one could do
"console=uart,io,0x3f8,9600n8,21285" (where "21285" is a non-8250
UART type). But that seems ugly to me. I'd rather have
"console=21285", "console=68328", etc.
I just want the "console=<tag>" to explicitly identify the UART
type so we don't have to poke at the thing and guess what it is.
Bjorn
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