patch-2.4.22 linux-2.4.22/include/asm-arm/arch-omaha/timex.h

• Lines: 38
• Date: 2003-08-25 04:44:43.000000000 -0700
• Orig file: linux-2.4.21/include/asm-arm/arch-omaha/timex.h
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.21/include/asm-arm/arch-omaha/timex.h linux-2.4.22/include/asm-arm/arch-omaha/timex.h
@@ -0,0 +1,37 @@
+/*
+ *  linux/include/asm-arm/arch-omaha/timex.h
+ *
+ *  Omaha architecture timex specifications
+ *
+ *  Copyright (C) 1999-2002 ARM Limited
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/*
+ * Always runs at (almost) 1Mhz.
+ *
+ * Time is derived as follows
+ *
+ * CLOCK_TICK_RATE = ((FCLK / 4) / (Prescaler + 1)) / 2
+ *
+ * Where FCLK = CPU Clock Rate = 133 MHz
+ * Prescaler = 16
+ *
+ * Therefore:
+ * CLOCK_TICK_RATE = (33.25 MHz / 17) / 2
+ *                 = 977941 Hz
+ */
+#define CLOCK_TICK_RATE		(977941)