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