SH Kim has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/81103?usp=email )
Change subject: mb/google/brya/var/xol: Configure Acoustic noise mitigation ......................................................................
mb/google/brya/var/xol: Configure Acoustic noise mitigation
Enable Acoustic noise mitigation for xol. The setting values are from internal power team.
- Enable Acoustic noise mitigation - Set slow slew rate VCCIA and VCCGT to SLEW_FAST_4 - Set FastPkgCRampDisable VCCIA and VCCGT to 1
BUG=None TEST=FW_NAME=xol emerge-brya coreboot chromeos-bootimage
Change-Id: I6165ae6ca73d1467a1d2cc7bd545298bd4c2f54f Signed-off-by: Seunghwan Kim sh_.kim@samsung.corp-partner.google.com --- M src/mainboard/google/brya/variants/xol/overridetree.cb 1 file changed, 7 insertions(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/03/81103/1
diff --git a/src/mainboard/google/brya/variants/xol/overridetree.cb b/src/mainboard/google/brya/variants/xol/overridetree.cb index 0547dca..18e8ace 100644 --- a/src/mainboard/google/brya/variants/xol/overridetree.cb +++ b/src/mainboard/google/brya/variants/xol/overridetree.cb @@ -10,6 +10,13 @@ .enable_fast_vmode = 1, }"
+ # Acoustic settings + register "acoustic_noise_mitigation" = "1" + register "slow_slew_rate[VR_DOMAIN_IA]" = "SLEW_FAST_4" + register "slow_slew_rate[VR_DOMAIN_GT]" = "SLEW_FAST_4" + register "fast_pkg_c_ramp_disable[VR_DOMAIN_IA]" = "1" + register "fast_pkg_c_ramp_disable[VR_DOMAIN_GT]" = "1" + register "sagv" = "SaGv_Enabled"
register "pch_slp_a_min_assertion_width" = "SLP_A_ASSERTION_DEFAULT"