This lets udelay() work properly on platforms which use dt_fixup_cpu_clocks.
Signed-off-by: Scott Wood <[EMAIL PROTECTED]>
---
arch/powerpc/boot/devtree.c | 2 ++
arch/powerpc/boot/ops.h | 2 ++
2 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/boot/devtree.c b/arch/powerpc/boot/devtree.c
index c995155..ae8b886 100644
--- a/arch/powerpc/boot/devtree.c
+++ b/arch/powerpc/boot/devtree.c
@@ -74,6 +74,8 @@ void dt_fixup_cpu_clocks(u32 cpu, u32 tb, u32 bus)
if (bus > 0)
setprop_val(devp, "bus-frequency", bus);
}
+
+ timebase_period_ns = 1000000000 / tb;
}
void dt_fixup_clock(const char *path, u32 freq)
diff --git a/arch/powerpc/boot/ops.h b/arch/powerpc/boot/ops.h
index 8607706..aebd6ed 100644
--- a/arch/powerpc/boot/ops.h
+++ b/arch/powerpc/boot/ops.h
@@ -191,4 +191,6 @@ static inline void exit(void)
static char _bss_stack[size]; \
void *_platform_stack_top = _bss_stack + sizeof(_bss_stack);
+extern unsigned long timebase_period_ns;
+
#endif /* _PPC_BOOT_OPS_H_ */
--
1.5.0.3
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