commit d581878264fc9c5900c19d1a8b3b1851d1b695db
author Subrata Banik <subratabanik@google.com> Thu Oct 26 19:55:56 2023 +0530
committer Subrata Banik <subratabanik@google.com> Tue Oct 31 05:22:06 2023 +0000
tree 01045dc6af8a491c23d2886e52d03f9f1faf13e8
parent e4ac7b16efcdadadae80b4e6feb4f37601dec5ed

mb/google/rex/var/screebo: Disable FVM

This patch disables FVM for IA and SA VRs as per the OEM requirement.

BUG=b:307237761
TEST=Able to build and boot google/screebo.

Change-Id: Icb0611331ac7090d11d646a5ad5201593a90aacb
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78662
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <ericllai@google.com>

src/mainboard/google/rex/variants/screebo/overridetree.cb

diff --git a/src/mainboard/google/rex/variants/screebo/overridetree.cb b/src/mainboard/google/rex/variants/screebo/overridetree.cb
index 0d69aca..b7ea555 100644
--- a/src/mainboard/google/rex/variants/screebo/overridetree.cb
+++ b/src/mainboard/google/rex/variants/screebo/overridetree.cb
@@ -40,6 +40,14 @@
 		.tdp_pl4 = 84,
 	}"
 
+	# Override FVM and VR (IA and SA) configuration: Disable
+	register "enable_fast_vmode[VR_DOMAIN_IA]" = "0"
+	register "cep_enable[VR_DOMAIN_IA]" = "0"
+	register "fast_vmode_i_trip[VR_DOMAIN_IA]" = "0"
+	register "enable_fast_vmode[VR_DOMAIN_SA]" = "0"
+	register "cep_enable[VR_DOMAIN_SA]" = "0"
+	register "fast_vmode_i_trip[VR_DOMAIN_SA]" = "0"
+
 	register "usb2_ports[0]" = "USB2_PORT_TYPE_C(OC1)"	# USB2_C1
 	register "usb2_ports[1]" = "USB2_PORT_TYPE_C(OC0)"	# USB2_C0
 	register "usb2_ports[2]" = "USB2_PORT_MID(OC2)"	# Type-A Port A1