Re: serial: 8250 fails to detect Exar XR16L2551 correctly

[David Vrabel <dvrabel@arcom.com>]

Alex Williamson wrote:
> 
> David, would you mind
> trying this on the XR16L255x part? (ie. don't use console=ttyS, use
> console=uart,...)  Thanks,

I wasn't even aware you could do this...

These are the serial ports I have:

ttyS0 at MMIO 0xc8000000 (irq = 15) is a XScale   IXP425 internal
ttyS1 at MMIO 0xc8001000 (irq = 13) is a XScale     "       "
ttyS2 at MMIO 0x53000000 (irq = 21) is a XR16550  XR16L2551
ttyS3 at MMIO 0x53000008 (irq = 21) is a XR16550      "

I tried console=uart,mmio,0x53000000,115200 and my board didn't print
anything to the console and the boot failed somewhere before starting
network (I don't know exactly where or why since I couldn't see any
messages).  Using console=ttyS2,115200 works fine.

What's 8250_early.c for anyway?  console=ttyS... has always worked fine
for me.

David Vrabel
-- 
David Vrabel, Design Engineer

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