mb/google/nissa/var/joxer: Configure Acoustic noise mitigation
- Enable Acoustic noise mitigation
- Set slow slew rate VCCIA and VCCGT to SLEW_FAST_8
- Set FastPkgCRampDisable VCCIA and VCCGT to 1
BUG=b:303533832
TEST=USE="project_joxer emerge-nissa coreboot"
Signed-off-by: Mark Hsieh <mark_hsieh@wistron.corp-partner.google.com>
Change-Id: I575da55b96bf4deacec5c0992eae9930eb0745d6
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78256
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Derek Huang <derekhuang@google.com>
diff --git a/src/mainboard/google/brya/variants/joxer/overridetree.cb b/src/mainboard/google/brya/variants/joxer/overridetree.cb
index 12175c5..135041d 100644
--- a/src/mainboard/google/brya/variants/joxer/overridetree.cb
+++ b/src/mainboard/google/brya/variants/joxer/overridetree.cb
@@ -16,6 +16,13 @@
chip soc/intel/alderlake
register "sagv" = "SaGv_Enabled"
+ # Acoustic settings
+ register "acoustic_noise_mitigation" = "1"
+ register "slow_slew_rate[VR_DOMAIN_IA]" = "SLEW_FAST_8"
+ register "slow_slew_rate[VR_DOMAIN_GT]" = "SLEW_FAST_8"
+ register "fast_pkg_c_ramp_disable[VR_DOMAIN_IA]" = "1"
+ register "fast_pkg_c_ramp_disable[VR_DOMAIN_GT]" = "1"
+
# EMMC Tx CMD Delay
# Refer to EDS-Vol2-42.3.7.
# [14:8] steps of delay for DDR mode, each 125ps, range: 0 - 39.