MPC83xx console : no output after handover

Scott Wood scottwood at
Wed Apr 1 08:48:51 EST 2009

On Tue, Mar 31, 2009 at 04:30:26PM -0400, Matthew L. Creech wrote:
> (Sorry if this is a dupe, but I think my first attempt was filtered out)

No, it's a dupe. :-)

> I'm trying to get Linux booting on a custom board based on the MPC8313
> ERDB, but there's no output after the console is transferred.  I get
> the following:
> Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
> serial8250.0: ttyS0 at MMIO 0xe0004500 (irq = 16) is a 16550A
> console handover: boot [udbg0] -> real [ttyS0]
> serial8250.0: ttyS1 at MMIO 0xe0004600 (irq = 17) is a 16550A

Make sure that u-boot for your board (or whatever you're using) is
properly filling in the clock-frequency property of the serial port


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