serial.h 752 B

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  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. #ifndef _ASM_ARC_SERIAL_H
  9. #define _ASM_ARC_SERIAL_H
  10. /*
  11. * early-8250 requires BASE_BAUD to be defined and includes this header.
  12. * We put in a typical value:
  13. * (core clk / 16) - i.e. UART samples 16 times per sec.
  14. * Athough in multi-platform-image this might not work, specially if the
  15. * clk driving the UART is different.
  16. * We can't use DeviceTree as this is typically for early serial.
  17. */
  18. #include <asm/clk.h>
  19. #define BASE_BAUD (arc_get_core_freq() / 16)
  20. #endif /* _ASM_ARC_SERIAL_H */