hardware.h 750 B

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  1. /* SPDX-License-Identifier: GPL-2.0 */
  2. /*
  3. * arch/arm/mach-ep93xx/include/mach/hardware.h
  4. */
  5. #ifndef __ASM_ARCH_HARDWARE_H
  6. #define __ASM_ARCH_HARDWARE_H
  7. #include "platform.h"
  8. /*
  9. * The EP93xx has two external crystal oscillators. To generate the
  10. * required high-frequency clocks, the processor uses two phase-locked-
  11. * loops (PLLs) to multiply the incoming external clock signal to much
  12. * higher frequencies that are then divided down by programmable dividers
  13. * to produce the needed clocks. The PLLs operate independently of one
  14. * another.
  15. */
  16. #define EP93XX_EXT_CLK_RATE 14745600
  17. #define EP93XX_EXT_RTC_RATE 32768
  18. #define EP93XX_KEYTCHCLK_DIV4 (EP93XX_EXT_CLK_RATE / 4)
  19. #define EP93XX_KEYTCHCLK_DIV16 (EP93XX_EXT_CLK_RATE / 16)
  20. #endif