Dear Andreas Bießmann,
Yes it is really. The call on this place is historic and caused no errors therefore I left it there. But it should be removed.
The same issue is in other AT91 boards as well.
@@ -113,10 +112,6 @@ #define CONFIG_DBGU #undef CONFIG_USART0 #undef CONFIG_USART1
Don't #undef what has never been defined.
You know this is historic. This are the three possible interfaces for USART on this board. At least at91rm9200 known about DBGU ;) This will be addressed when merging at91rm9200/at91 and maybe avr32 usart implementation.
I know, its like that in almost all Atmel based boards. Even worse is the AT91 method, since some AT91 can have 6 UARTs. However unlikely that they are going to be used as console, this is awfully bad = <at91sam9260_ek.h>:
#define CONFIG_ATMEL_USART 1 #undef CONFIG_USART0 #undef CONFIG_USART1 #undef CONFIG_USART2 #define CONFIG_USART3 1 /* USART 3 is DBGU */ Notice the last define !!!
I once tried to cleanup that a bit, but it really would affect files all across AT91.
Best Regards, Reinhard