xref: /linux/arch/arc/include/asm/serial.h (revision e23b62256a361611cbd45cd1456638f1a5106b5c)
1 /*
2  * Copyright (C) 2012 Synopsys, Inc. (www.synopsys.com)
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License version 2 as
6  * published by the Free Software Foundation.
7  */
8 
9 #ifndef _ASM_ARC_SERIAL_H
10 #define _ASM_ARC_SERIAL_H
11 
12 /*
13  * early-8250 requires BASE_BAUD to be defined and includes this header.
14  * We put in a typical value:
15  * 	(core clk / 16) - i.e. UART samples 16 times per sec.
16  * Athough in multi-platform-image this might not work, specially if the
17  * clk driving the UART is different.
18  * We can't use DeviceTree as this is typically for early serial.
19  */
20 
21 #include <asm/clk.h>
22 
23 #define BASE_BAUD	(arc_get_core_freq() / 16)
24 
25 #endif /* _ASM_ARC_SERIAL_H */
26