Chen Wisley has uploaded this change for review.

View Change

mb/google/hatch: Set SA slow slew rate to 1/2 for jinlon/dratini

Applied CL (cb:38212) to reduce acoustic noise, and
observed that screen flicked on vt2 on some devices after idle a perior of time.
Remove SSR (1/8) setting for SA to default SSR 1/2, issue disappeared, and
didn't affect noise much.

BUG=none
TEST=build dratini, observe that screen flick issue disapppered

Change-Id: I9e81c2f15dd6babfa360eee213fc4ab6310c7455
---
M src/mainboard/google/hatch/variants/dratini/overridetree.cb
M src/mainboard/google/hatch/variants/jinlon/overridetree.cb
2 files changed, 0 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/84/43284/1

diff --git a/src/mainboard/google/hatch/variants/dratini/overridetree.cb b/src/mainboard/google/hatch/variants/dratini/overridetree.cb
index 0bada7d..2bfcc26 100644
--- a/src/mainboard/google/hatch/variants/dratini/overridetree.cb
+++ b/src/mainboard/google/hatch/variants/dratini/overridetree.cb
@@ -23,7 +23,6 @@
 	register "AcousticNoiseMitigation" = "1"
 	register "SlowSlewRateForIa" = "2"
 	register "SlowSlewRateForGt" = "2"
-	register "SlowSlewRateForSa" = "2"
 	register "FastPkgCRampDisableIa" = "1"
 	register "FastPkgCRampDisableGt" = "1"
 	register "FastPkgCRampDisableSa" = "1"
diff --git a/src/mainboard/google/hatch/variants/jinlon/overridetree.cb b/src/mainboard/google/hatch/variants/jinlon/overridetree.cb
index a3bb782..fc3bb85 100644
--- a/src/mainboard/google/hatch/variants/jinlon/overridetree.cb
+++ b/src/mainboard/google/hatch/variants/jinlon/overridetree.cb
@@ -23,7 +23,6 @@
 	register "AcousticNoiseMitigation" = "1"
 	register "SlowSlewRateForIa" = "2"
 	register "SlowSlewRateForGt" = "2"
-	register "SlowSlewRateForSa" = "2"
 	register "FastPkgCRampDisableIa" = "1"
 	register "FastPkgCRampDisableGt" = "1"
 	register "FastPkgCRampDisableSa" = "1"

To view, visit change 43284. To unsubscribe, or for help writing mail filters, visit settings.