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[ARM] 4357/1: AT91: Support slower serial baud-rates

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Allow slower serial baud-rates by switching the UART clock from MCK to
MCK/8.

Based on patches by Mike Wolfram and Russell King.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Andrew Victor
2007-05-03 12:26:24 +01:00
committed by Russell King
parent 7c73628f24
commit 03abeac0a2
2 changed files with 10 additions and 2 deletions
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drivers/serial/atmel_serial.h
+3
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@@ -46,6 +46,9 @@
#define ATMEL_US_USMODE_ISO7816_T1 6
#define ATMEL_US_USMODE_IRDA 8
#define ATMEL_US_USCLKS (3 << 4) /* Clock Selection */
#define ATMEL_US_USCLKS_MCK (0 << 4)
#define ATMEL_US_USCLKS_MCK_DIV8 (1 << 4)
#define ATMEL_US_USCLKS_SCK (3 << 4)
#define ATMEL_US_CHRL (3 << 6) /* Character Length */
#define ATMEL_US_CHRL_5 (0 << 6)
#define ATMEL_US_CHRL_6 (1 << 6)