[coreboot-gerrit] New patch to review for coreboot: c149092 samus: Enable vr_slow_ramp
Stefan Reinauer (stefan.reinauer@coreboot.org)
gerrit at coreboot.org
Fri Apr 10 01:03:22 CEST 2015
Stefan Reinauer (stefan.reinauer at coreboot.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/9506
-gerrit
commit c1490921012f96e1a225911d4b71da15ec08438d
Author: Shawn Nematbakhsh <shawnn at chromium.org>
Date: Wed Feb 11 14:33:51 2015 -0800
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 at chromium.org>
Original-Commit-Id: 041fca21b863d3fd94dd5bebf89fe48f5ac74285
Original-Change-Id: Id7e55f3710304369a79150129db18300ae38f93a
Original-Signed-off-by: Shawn Nematbakhsh <shawnn at chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/248791
Original-Reviewed-by: Duncan Laurie <dlaurie at chromium.org>
---
src/mainboard/google/samus/devicetree.cb | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/mainboard/google/samus/devicetree.cb b/src/mainboard/google/samus/devicetree.cb
index 3eaea40..d12762d 100644
--- a/src/mainboard/google/samus/devicetree.cb
+++ b/src/mainboard/google/samus/devicetree.cb
@@ -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
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