On Tue, 2005-04-26 at 15:58 -0400, Clem Taylor wrote: > It seems that the kernel (2.6.10) isn't properly initializing the > Au1550 serial ports. All three of the serial ports work, just not at > the same time. Linux seems to need yamon to configure the serial port > first. Out of the box yamon uses UART0 & UART3 and ttyS0 & ttyS2 > (UART3, the 1550 doesn't have a UART2) work in linux, but ttyS1 > doesn't. If I switch yamon to use UART1 & UART3, then ttyS0 doesn't > seem to work in linux. The serial port that isn't configured by yamon > will hang in an ioctl() on calling tcsetattr(). > > Before I just cheat and add a third serial port to yamon, should the > kernel be initializing the UARTs or does it really expect the yamon to > initialize them first? Is anyone using all 3 serial ports on an > Au1550? Yes, it should. And we should really rewrite the serial driver from scratch. Pete
