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Diffstat (limited to 'arch/arm/mach-ep93xx/include/mach/hardware.h')
-rw-r--r--arch/arm/mach-ep93xx/include/mach/hardware.h17
1 files changed, 14 insertions, 3 deletions
diff --git a/arch/arm/mach-ep93xx/include/mach/hardware.h b/arch/arm/mach-ep93xx/include/mach/hardware.h
index 2866297..349fa7c 100644
--- a/arch/arm/mach-ep93xx/include/mach/hardware.h
+++ b/arch/arm/mach-ep93xx/include/mach/hardware.h
@@ -4,12 +4,23 @@
#ifndef __ASM_ARCH_HARDWARE_H
#define __ASM_ARCH_HARDWARE_H
-#include "ep93xx-regs.h"
+#include <mach/ep93xx-regs.h>
+#include <mach/platform.h>
#define pcibios_assign_all_busses() 0
-#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
-#include "ts72xx.h"
+#define EP93XX_KEYTCHCLK_DIV4 (EP93XX_EXT_CLK_RATE / 4)
+#define EP93XX_KEYTCHCLK_DIV16 (EP93XX_EXT_CLK_RATE / 16)
#endif
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