On Sat, Mar 26, 2005 at 03:10:05PM +0000, Russell King wrote: > Doesn't matter. The problem is that dwmw2's NS16550A patch (from ages > ago) changes the prescaler setting for this device so we can use the > higher speed baud rates. This means any programmed divisor (programmed > at early serial console initialisation time) suddenly becomes wrong as > soon as we fiddle with the prescaler during normal UART initialisation > time.
Seems like you are correct, given the below patch fixes the garbage output for me. Phil
--- linux-standard/drivers/serial/8250.c 2005-03-02 02:37:47.000000000 -0500 +++ linux-dellfw/drivers/serial/8250.c 2005-03-28 12:28:34.560032856 -0500 @@ -698,7 +698,7 @@ serial_outp(up, UART_MCR, status1); if ((status2 ^ status1) & UART_MCR_LOOP) { -#ifndef CONFIG_PPC +#if 0 serial_outp(up, UART_LCR, 0xE0); status1 = serial_in(up, 0x04); /* EXCR1 */ status1 &= ~0xB0; /* Disable LOCK, mask out PRESL[01] */