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samus: Enable vr_slow_ramp 

Enable slow ramp rate to reduce idle noise / crackle.

BUG=None
TEST=Performance/noise/power tested by others.
BRANCH=Samus

Change-Id: I3b0083bdb19f96fc018356bd744fdff3baaf8962
Signed-off-by: Stefan Reinauer <reinauer@chromium.org>
Original-Commit-Id: 041fca21b863d3fd94dd5bebf89fe48f5ac74285
Original-Change-Id: Id7e55f3710304369a79150129db18300ae38f93a
Original-Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/248791
Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/9506
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
This commit is contained in:
Shawn Nematbakhsh 2015-02-11 14:33:51 -08:00 committed by Stefan Reinauer
parent 5f31f497ec
commit 1c4743f86b
1 changed files with 3 additions and 0 deletions
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3
src/mainboard/google/samus/devicetree.cb
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@ -59,6 +59,9 @@ chip soc/intel/broadwell
# Disable S0ix for now
register "s0ix_enable" = "0"
register "vr_slow_ramp_rate_set" = "3"
register "vr_slow_ramp_rate_enable" = "1"
device cpu_cluster 0 on
device lapic 0 on end
end