[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>
This commit is contained in:
parent
ab590ccb42
commit
0fd6f71794
1 changed files with 11 additions and 0 deletions
|
@ -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");
|
||||
|
|
Loading…
Reference in a new issue