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authorLen Brown <len.brown@intel.com>2015-03-24 23:23:20 -0400
committerLen Brown <len.brown@intel.com>2015-03-31 21:57:15 -0400
commitd7ef76717322c8e2df7d4360b33faa9466cb1a0d (patch)
treee6341557089bb266f4844ba9f74ea8d61f9787d1 /sound/pcmcia
parent6c310bc1acdd02110182a2ec6efa3e7571a3b80c (diff)
intel_idle: Update support for Silvermont Core in Baytrail SOC
On some Silvermont-Core/Baytrail-SOC systems, C1E latency is higher than original specifications. Although C1E is still enumerated in CPUID.MWAIT.EDX, we delete the state from intel_idle to avoid latency impact. Under some conditions, the latency of the C6N-BYT and C6S-BYT states may exceed the specified values of 40 and 140 usec, respectively. Increase those values to 300 and 500 usec; to assure that the hardware does not violate constraints that may be set by the Linux PM_QOS sub-system. Also increase the C7-BYT target residency to 4.0 ms from 1.5 ms. Signed-off-by: Len Brown <len.brown@intel.com> Cc: Kumar P Mahesh <mahesh.kumar.p@intel.com> Cc: Alan Cox <alan@linux.intel.com> Cc: Mika Westerberg <mika.westerberg@linux.intel.com> Cc: <stable@vger.kernel.org>
Diffstat (limited to 'sound/pcmcia')
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