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Re: [XenPPC] [PATCH] Disable DPM until code is audited

from [Segher Boessenkool]

[Permanent Link][Original]

To:	Amos Waterland <apw@xxxxxxxxxx>
Subject:	Re: [XenPPC] [PATCH] Disable DPM until code is audited
From:	Segher Boessenkool <segher@xxxxxxxxxxxxxxxxxxx>
Date:	Mon, 4 Dec 2006 17:56:54 +0100
Cc:	Jimi Xenidis <jimix@xxxxxxxxxxxxxx>, xen-ppc-devel <xen-ppc-devel@xxxxxxxxxxxxxxxxxxx>
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- /* FIXME Do not set the NAP and DPM bits in HID0 until wehave had a

-     * chance to audit the safe halt and idle loop code. */

+ /* FIXME Do not set the NAP bit in HID0 until we have had achance

+     * to audit the safe halt and idle loop code. */
     hid0.bits.nap = 0;      /* NAP */
-    hid0.bits.dpm = 0;      /* Dynamic Power Management */
+    hid0.bits.dpm = 1;      /* Dynamic Power Management */
     hid0.bits.nhr = 1;      /* Not Hard Reset */
     hid0.bits.hdice_en = 1; /* enable HDEC */


This works on the JS20 in TRL.


Great to hear DPM is just fine.  NAP is expected to have
problems on CPUs before 970MP, it needs special setup.


Segher


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