Workaround for errata 4290: The decrementer ticks at half the expected rate
so load it with half the value it would otherwise be loaded with.
Index: 2.6.21/include/asm-powerpc/time.h
===================================================================
--- 2.6.21.orig/include/asm-powerpc/time.h
+++ 2.6.21/include/asm-powerpc/time.h
@@ -173,6 +173,13 @@ static inline unsigned int get_dec(void)
static inline void set_dec(int val)
{
+#ifdef CONFIG_PPC_PASEMI
+ /* PA6T rev Ax have decrementer ticking at 1/2 tb rate */
+ val >>= 2;
+ if (!val)
+ val = 1;
+#endif
+
#if defined(CONFIG_40x)
return; /* Have to let it auto-reload */
#elif defined(CONFIG_8xx_CPU6)
--
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