Hi there,
To be able to support 921600 bits/sec on the serial port I am trying to
use an external clock in serial/driver/mcf.c.
The external clock is connected to PAR_TIMER_TIN0.
I would have assumed that I only need to adjust mcf_set_termios to
configure PAR_TIMER_TIN0 as clock input and tell the UART to use the
external clock with
writeb(MCFUART_UCSR_RXCLKEXT16 |
MCFUART_UCSR_TXCLKEXT16,
port->membase + MCFUART_UCSR);
instead of the built-in one with
writeb(MCFUART_UCSR_RXCLKTIMER |
MCFUART_UCSR_TXCLKTIMER,
port->membase + MCFUART_UCSR);
But when I set CONFIG_SERIAL_MCF_BAUDRATE to 921600, the kernel gets
stuck somewhere (hard to tell where without output ;-) )until the
watchdog kicks in.
Do I have to change anything else?
Any hint would be very appriciated.
Thanks,
Lars
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