thunderbolt: Optimize Force Power logic

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Currently the "Force Power" logic uses 10 retries, each with a delay of
250 ms. Thunderbolt controllers in Ice Lake and Tiger Lake platforms are
found to complete this in the order of 3 ms or so. Since this delay
is in resume path, surplus delay is effectively affecting runtime PM
resume flows.

Decrease the granularity of the delay to 3 ms and increase the number of
retries so we wait maximum of ~1 s which is the recommended timeout.
This should make runtime resume a bit faster.

Reported-by: Dana Alkattan <dana.alkattan@intel.com>
Signed-off-by: Rajmohan Mani <rajmohan.mani@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>

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Rajmohan Mani 2020-08-17 08:55:20 -07:00 • committed by Mika Westerberg

parent fff15f23b8

commit dc4c4bf122

1 changed files with 2 additions and 2 deletions

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drivers/thunderbolt/nhi_ops.c

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