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-rw-r--r--arch/arm/mach-pxa/include/mach/hardware.h2
-rw-r--r--arch/arm/mach-pxa/include/mach/timex.h8
2 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/include/mach/hardware.h b/arch/arm/mach-pxa/include/mach/hardware.h
index e2d6784aa7e..c666796911c 100644
--- a/arch/arm/mach-pxa/include/mach/hardware.h
+++ b/arch/arm/mach-pxa/include/mach/hardware.h
@@ -291,6 +291,8 @@
*/
extern unsigned int get_memclk_frequency_10khz(void);
+/* return the clock tick rate of the OS timer */
+extern unsigned long get_clock_tick_rate(void);
#endif
#if defined(CONFIG_MACH_ARMCORE) && defined(CONFIG_PCI)
diff --git a/arch/arm/mach-pxa/include/mach/timex.h b/arch/arm/mach-pxa/include/mach/timex.h
index b05fc6683c4..af6760a50e1 100644
--- a/arch/arm/mach-pxa/include/mach/timex.h
+++ b/arch/arm/mach-pxa/include/mach/timex.h
@@ -10,6 +10,14 @@
* published by the Free Software Foundation.
*/
+/* Various drivers are still using the constant of CLOCK_TICK_RATE, for
+ * those drivers to at least work, the definition is provided here.
+ *
+ * NOTE: this is no longer accurate when multiple processors and boards
+ * are selected, newer drivers should not depend on this any more. Use
+ * either the clocksource/clockevent or get this at run-time by calling
+ * get_clock_tick_rate() (as defined in generic.c).
+ */
#if defined(CONFIG_PXA25x)
/* PXA250/210 timer base */