Subrata Banik has submitted this change. ( https://review.coreboot.org/c/coreboot/+/85555?usp=email )
Change subject: mb/google/brox/var/jubilant: Disable Tccold Handshake ......................................................................
mb/google/brox/var/jubilant: Disable Tccold Handshake
The patch disables Tccold Handshake to prevent possible display flicker issue for jubilant board. Please refer to Intel doc#723158 for more information.
BUG=b:383433239 BRANCH=firmware-brox-16080.B TEST=Boot to OS on jubilant, verify the display is without flicker.
Change-Id: I4f22067b81fa1b1b9addd7d1f49de59136d221c0 Signed-off-by: Ren Kuo ren.kuo@quanta.corp-partner.google.com Reviewed-on: https://review.coreboot.org/c/coreboot/+/85555 Reviewed-by: Subrata Banik subratabanik@google.com Tested-by: build bot (Jenkins) no-reply@coreboot.org Reviewed-by: Karthik Ramasubramanian kramasub@google.com --- M src/mainboard/google/brox/variants/jubilant/overridetree.cb 1 file changed, 4 insertions(+), 0 deletions(-)
Approvals: Subrata Banik: Looks good to me, approved build bot (Jenkins): Verified Karthik Ramasubramanian: Looks good to me, approved
diff --git a/src/mainboard/google/brox/variants/jubilant/overridetree.cb b/src/mainboard/google/brox/variants/jubilant/overridetree.cb index 4e554ab..afcfc7a 100644 --- a/src/mainboard/google/brox/variants/jubilant/overridetree.cb +++ b/src/mainboard/google/brox/variants/jubilant/overridetree.cb @@ -21,6 +21,10 @@ chip soc/intel/alderlake register "platform_pmax" = "208"
+ # As per Intel Advisory doc#723158, the change is required to prevent possible + # display flickering issue. + register "disable_dynamic_tccold_handshake" = "true" + register "usb2_ports[0]" = "USB2_PORT_TYPE_C(OC_SKIP)" # USB2_C0 register "usb2_ports[1]" = "USB2_PORT_EMPTY" # Disable USB2 Port register "usb2_ports[2]" = "USB2_PORT_TYPE_C(OC_SKIP)" # USB2_C2