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/* * 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 <asm/clk.h> #define BASE_BAUD (arc_get_core_freq() / 16) /* * This is definitely going to break early 8250 consoles on multi-platform * images but hey, it won't add any code complexity for a debug feature of * one broken driver. */ #ifdef CONFIG_ARC_PLAT_TB10X #undef BASE_BAUD #define BASE_BAUD (arc_get_core_freq() / 16 / 3) #endif #endif /* _ASM_ARC_SERIAL_H */