[coreboot-gerrit] New patch to review for coreboot: c149092 samus: Enable vr_slow_ramp

[Stefan Reinauer (stefan.reinauer@coreboot.org)]

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