diff options
| author | Kumar Gala <galak@freescale.com> | 2005-10-25 23:02:59 -0500 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2005-10-26 15:55:46 +1000 |
| commit | 0fd6f717948083d480f38e97f62cc116faf0e534 (patch) | |
| tree | f8747c6d7536e5bb883ef80d92d12d00556e22f3 /arch/powerpc | |
| parent | ab590ccb428f874bb8f9cec1265cc1f9cb38b601 (diff) | |
[PATCH] powerpc: Add support for Book-E timer config to generic_calibrate_decr
We need to initialize some control SPRS for timers on Book-E before
we start taking decrementer interrupts.
Signed-off-by: Kumar K. Gala <kumar.gala@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/kernel/time.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 82f2cabb4f4..9f264c2f02c 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -610,6 +610,17 @@ void __init generic_calibrate_decr(void) ppc_proc_freq = *fp; } } +#ifdef CONFIG_BOOKE + /* Set the time base to zero */ + mtspr(SPRN_TBWL, 0); + mtspr(SPRN_TBWU, 0); + + /* Clear any pending timer interrupts */ + mtspr(SPRN_TSR, TSR_ENW | TSR_WIS | TSR_DIS | TSR_FIS); + + /* Enable decrementer interrupt */ + mtspr(SPRN_TCR, TCR_DIE); +#endif if (!node_found) printk(KERN_ERR "WARNING: Estimating processor frequency " "(not found)\n"); |