[coreboot-gerrit] [XS] Change in coreboot[main]: mb/google/rex/var/screebo: Disable FVM

[Subrata Banik (Code Review)]

Subrata Banik has submitted this change. ( https://review.coreboot.org/c/coreboot/+/78662?usp=email )

(

2 is the latest approved patch-set.
No files were changed between the latest approved patch-set and the submitted one.
 )Change subject: mb/google/rex/var/screebo: Disable FVM
......................................................................

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 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78662
Tested-by: build bot (Jenkins) 
Reviewed-by: Eric Lai 
---
M src/mainboard/google/rex/variants/screebo/overridetree.cb
1 file changed, 8 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Eric Lai: Looks good to me, approved

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