>On Thu, Feb 26, 2015 at 08:46:56PM +0530, deepak.s at >linux.intel.com<http://lists.freedesktop.org/mailman/listinfo/intel-gfx> wrote:
>> From: Deepak S <deepak.s at >> linux.intel.com<http://lists.freedesktop.org/mailman/listinfo/intel-gfx>> >> >> After feedback from the hardware team, now we set the GPU min freq to RPe. >> If we drop the freq to RPn, we found that the punit was not setting the >> voltage to Vnn, So recommendation is to set min freq to RPe. >And does it change the voltage at all? Is there really any advantage to >the extra code on idle? Does efficient_freq really consume less power >than min_freq when active (assuming a min_freq/efficient_freq busy >workload i.e. does a workload that would be 100% busy at min_freq >consume less power when run at efficient_freq)? >-Chris Power team is reporting ~140mW delta at idle using efficient freq - definitely significant. - Gavin
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