host-dma: only do DMA L1 exit at post copy #3135
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keyonjie
requested review from
dbaluta,
jajanusz,
lbetlej,
lgirdwood,
mmaka1,
plbossart and
tlauda
as code owners
Only set DMA L1 Exit at post copy to reduce the power consumption, this will benefit the KWD scenario as doing the HDA host DMA L1 Exit even no real data is being copied will stop the system to enter s0ix low power stage. Signed-off-by: Keyon Jie <yang.jie@linux.intel.com>
jajanusz
approved these changes
Jul 7, 2020
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Only set DMA L1 Exit at post copy to reduce the power consumption, this
will benefit the KWD scenario as doing the HDA host DMA L1 Exit even
no real data is being copied will stop the system to enter s0ix low
power stage.
Signed-off-by: Keyon Jie yang.jie@linux.intel.com