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| author | Wisley Chen <wisley.chen@quantatw.com> | 2020-07-08 16:18:46 +0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2020-07-14 16:08:06 +0000 |
| commit | 51c6d4429c65e01ac936de078482c4bab1a7a078 (patch) | |
| tree | bdbce60403d3c50b2f6976b1c94c9d9ba1828bae /src/mainboard/google/hatch | |
| parent | 370868766b90ce4bfa0342b6266a232b5326df50 (diff) | |
| download | coreboot-51c6d4429c65e01ac936de078482c4bab1a7a078.tar.xz | |
mb/google/hatch: Set SA slow slew rate to 1/2 for jinlon/dratini
Screen flickered on VT2 on some devices after idle a period of time.
Remove SSR (1/8) setting for SA to default SSR (1/2), screen flicking
issue disappeared, and didn't affect acoustic noise much.
Because CB:38212 (commit eae254e) caused this issue.
BUG=b:160754994
TEST=build dratini, observe that screen flick issue disapppered
Change-Id: I9e81c2f15dd6babfa360eee213fc4ab6310c7455
Signed-off-by: Wisley Chen <wisley.chen@quantatw.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43284
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard/google/hatch')
| -rw-r--r-- | src/mainboard/google/hatch/variants/dratini/overridetree.cb | 1 | ||||
| -rw-r--r-- | src/mainboard/google/hatch/variants/jinlon/overridetree.cb | 1 |
2 files changed, 0 insertions, 2 deletions
diff --git a/src/mainboard/google/hatch/variants/dratini/overridetree.cb b/src/mainboard/google/hatch/variants/dratini/overridetree.cb index 0bada7d916..2bfcc26c89 100644 --- a/src/mainboard/google/hatch/variants/dratini/overridetree.cb +++ b/src/mainboard/google/hatch/variants/dratini/overridetree.cb @@ -23,7 +23,6 @@ chip soc/intel/cannonlake 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 a3bb782a36..fc3bb854b0 100644 --- a/src/mainboard/google/hatch/variants/jinlon/overridetree.cb +++ b/src/mainboard/google/hatch/variants/jinlon/overridetree.cb @@ -23,7 +23,6 @@ chip soc/intel/cannonlake register "AcousticNoiseMitigation" = "1" register "SlowSlewRateForIa" = "2" register "SlowSlewRateForGt" = "2" - register "SlowSlewRateForSa" = "2" register "FastPkgCRampDisableIa" = "1" register "FastPkgCRampDisableGt" = "1" register "FastPkgCRampDisableSa" = "1" |