atmel_serial: filter out FP during baud rate detection
I made a change to u-boot that used the FP (Fractional Part) field of BRGR to achieve more accurate baud rate generation. Unfortunately, the atmel_serial driver looks at the whole BRGR register when trying to detect the baud rate that the port is currently running at, so setting FP to a nonzero value breaks the baud rate detection. I'll sit on the u-boot patch for a while longer, but this is clearly a bug in the atmel_serial driver which should be fixed. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Acked-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
parent
81c6ce9bd3
commit
9c81c5c95c
|
@ -1318,7 +1318,7 @@ static void __init atmel_console_get_options(struct uart_port *port, int *baud,
|
|||
* If the baud rate generator isn't running, the port wasn't
|
||||
* initialized by the boot loader.
|
||||
*/
|
||||
quot = UART_GET_BRGR(port);
|
||||
quot = UART_GET_BRGR(port) & ATMEL_US_CD;
|
||||
if (!quot)
|
||||
return;
|
||||
|
||||
|
|
Loading…
Reference in a new issue