Change in coreboot[master]: mb/google/brya/var/kano: Configure Acoustic noise mitigation

[David Wu (Code Review)]

David Wu has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/63610 )

Change subject: mb/google/brya/var/kano: Configure Acoustic noise mitigation
......................................................................

mb/google/brya/var/kano: Configure Acoustic noise mitigation

Enable Acoustic noise mitigation for kano and set slew rate to 1/8

BUG=b:229046516
TEST=build and verified by power team

Signed-off-by: David Wu 
Change-Id: Ifb5700391e33818878994f205acae7ee3b1b96d9
---
M src/mainboard/google/brya/variants/kano/overridetree.cb
1 file changed, 7 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/10/63610/1

diff --git a/src/mainboard/google/brya/variants/kano/overridetree.cb b/src/mainboard/google/brya/variants/kano/overridetree.cb
index 7b36d3b..5962fd1 100644
--- a/src/mainboard/google/brya/variants/kano/overridetree.cb
+++ b/src/mainboard/google/brya/variants/kano/overridetree.cb
@@ -22,6 +22,13 @@
    # GPE configuration
    register "pmc_gpe0_dw1" = "GPP_D"

+	# 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"
+
    register "usb2_ports[1]" = "USB2_PORT_EMPTY"		# Disable USB2_C1
    register "usb2_ports[3]" = "USB2_PORT_EMPTY"		# Disable M.2 WWAN