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[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>
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@ -610,6 +610,17 @@ void __init generic_calibrate_decr(void)
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ppc_proc_freq = *fp;
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}
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}
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#ifdef CONFIG_BOOKE
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/* Set the time base to zero */
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mtspr(SPRN_TBWL, 0);
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mtspr(SPRN_TBWU, 0);
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/* Clear any pending timer interrupts */
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mtspr(SPRN_TSR, TSR_ENW | TSR_WIS | TSR_DIS | TSR_FIS);
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/* Enable decrementer interrupt */
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mtspr(SPRN_TCR, TCR_DIE);
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#endif
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if (!node_found)
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printk(KERN_ERR "WARNING: Estimating processor frequency "
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"(not found)\n");
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