From 0208c96a9df98999dd150430b37983e9a003ea0a Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Wed, 23 Jan 2013 17:24:17 +0530 Subject: ARC: Provide a default serial.h for uart drivers needing BASE_BAUD Signed-off-by: Vineet Gupta --- arch/arc/include/asm/serial.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 arch/arc/include/asm/serial.h (limited to 'arch/arc/include/asm/serial.h') diff --git a/arch/arc/include/asm/serial.h b/arch/arc/include/asm/serial.h new file mode 100644 index 000000000000..4dff5a1e4128 --- /dev/null +++ b/arch/arc/include/asm/serial.h @@ -0,0 +1,25 @@ +/* + * Copyright (C) 2012 Synopsys, Inc. (www.synopsys.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef _ASM_ARC_SERIAL_H +#define _ASM_ARC_SERIAL_H + +/* + * early-8250 requires BASE_BAUD to be defined and includes this header. + * We put in a typical value: + * (core clk / 16) - i.e. UART samples 16 times per sec. + * Athough in multi-platform-image this might not work, specially if the + * clk driving the UART is different. + * We can't use DeviceTree as this is typically for early serial. + */ + +#include + +#define BASE_BAUD (arc_get_core_freq() / 16) + +#endif /* _ASM_ARC_SERIAL_H */ -- cgit v1.2.3-59-g8ed1b