imx: Add get_tbclk() function for imx25

Need this function for autoboot keyd

Signed-off-by: Matthias Weisser <weisserm@arcor.de>

diff --git a/arch/arm/cpu/arm926ejs/mx25/timer.c b/arch/arm/cpu/arm926ejs/mx25/timer.c
index 14f0c2dc73b923f28480abeccdba42a3675f2c12..7c8a71b9d3aece9f48ad341c90ef032b4c360875 100644 (file)
--- a/arch/arm/cpu/arm926ejs/mx25/timer.c
+++ b/arch/arm/cpu/arm926ejs/mx25/timer.c
@@ -187,3 +187,15 @@ void __udelay (unsigned long usec)
        while (get_ticks() < tmp)       /* loop till event */
                 /*NOP*/;
 }
+
+/*
+ * This function is derived from PowerPC code (timebase clock frequency).
+ * On ARM it returns the number of timer ticks per second.
+ */
+ulong get_tbclk(void)
+{
+       ulong tbclk;
+
+       tbclk = CONFIG_MX25_CLK32;
+       return tbclk;
+}