On Apr 26, 2005, at 3:58 PM, Clem Taylor wrote:
It seems that the kernel (2.6.10) isn't properly initializing the Au1550 serial ports.
What do you mean by "initializing"?
.... Linux seems to need yamon to configure ....
Linux assumes yamon for the Db1xxx and Pb1xxx boards will configure nearly all of the IO pins properly. This is quite the opposite of most embedded systems that assume nothing and rely on the Linux board startup functions to do this.
It is just historical, and could be changed. First, we need to add sufficient configuration information so we know what IO is used (serial ports in this case). Second we need the functions to do the proper set up based upon the selected configuration.
Then, the discussions (arguments) start about what should be further assumed about initialization :-) My preference is that if we should do all of the initialization and assume nothing, because we could probably eliminate lots of board specific set up files and use more common software.
Thanks.
-- Dan
