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-rw-r--r--arch/arm/mach-pxa/clocksource.c45
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/clocksource.c b/arch/arm/mach-pxa/clocksource.c
new file mode 100644
index 0000000000..04d090a748
--- /dev/null
+++ b/arch/arm/mach-pxa/clocksource.c
@@ -0,0 +1,45 @@
+/*
+ * (C) Copyright 2009 Sascha Hauer <s.hauer@pengutronix.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ */
+
+#include <common.h>
+#include <init.h>
+#include <clock.h>
+#include <asm/io.h>
+
+#define OSCR 0x40A00010
+
+uint64_t pxa_clocksource_read(void)
+{
+ return readl(OSCR);
+}
+
+static struct clocksource cs = {
+ .read = pxa_clocksource_read,
+ .mask = 0xffffffff,
+ .shift = 20,
+};
+
+static int clocksource_init(void)
+{
+ cs.mult = clocksource_hz2mult(3250000, cs.shift);
+
+ init_clock(&cs);
+
+ return 0;
+}
+
+core_initcall(clocksource_init);