serial.h 928 B

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  1. /* SPDX-License-Identifier: GPL-2.0-or-later */
  2. /*
  3. * OpenRISC Linux
  4. *
  5. * Linux architectural port borrowing liberally from similar works of
  6. * others. All original copyrights apply as per the original source
  7. * declaration.
  8. *
  9. * OpenRISC implementation:
  10. * Copyright (C) 2003 Matjaz Breskvar <[email protected]>
  11. * Copyright (C) 2010-2011 Jonas Bonn <[email protected]>
  12. * et al.
  13. */
  14. #ifndef __ASM_OPENRISC_SERIAL_H
  15. #define __ASM_OPENRISC_SERIAL_H
  16. #ifdef __KERNEL__
  17. #include <asm/cpuinfo.h>
  18. /* There's a generic version of this file, but it assumes a 1.8MHz UART clk...
  19. * this, on the other hand, assumes the UART clock is tied to the system
  20. * clock... 8250_early.c (early 8250 serial console) actually uses this, so
  21. * it needs to be correct to get the early console working.
  22. */
  23. #define BASE_BAUD (cpuinfo_or1k[smp_processor_id()].clock_frequency/16)
  24. #endif /* __KERNEL__ */
  25. #endif /* __ASM_OPENRISC_SERIAL_H */