1 /* 2 * arch/arm/mach-ep93xx/include/mach/hardware.h 3 */ 4 5 #ifndef __ASM_ARCH_HARDWARE_H 6 #define __ASM_ARCH_HARDWARE_H 7 8 #include <mach/ep93xx-regs.h> 9 #include <mach/platform.h> 10 11 #define pcibios_assign_all_busses() 0 12 13 /* 14 * The EP93xx has two external crystal oscillators. To generate the 15 * required high-frequency clocks, the processor uses two phase-locked- 16 * loops (PLLs) to multiply the incoming external clock signal to much 17 * higher frequencies that are then divided down by programmable dividers 18 * to produce the needed clocks. The PLLs operate independently of one 19 * another. 20 */ 21 #define EP93XX_EXT_CLK_RATE 14745600 22 #define EP93XX_EXT_RTC_RATE 32768 23 24 #define EP93XX_KEYTCHCLK_DIV4 (EP93XX_EXT_CLK_RATE / 4) 25 #define EP93XX_KEYTCHCLK_DIV16 (EP93XX_EXT_CLK_RATE / 16) 26 27 #endif 28