diff --git a/src/mainboard/google/brya/variants/gimble/overridetree.cb b/src/mainboard/google/brya/variants/gimble/overridetree.cb
index c015009c00..842dd00c06 100644
--- a/src/mainboard/google/brya/variants/gimble/overridetree.cb
+++ b/src/mainboard/google/brya/variants/gimble/overridetree.cb
@@ -34,6 +34,7 @@ chip soc/intel/alderlake
 	register "SaGv" = "SaGv_Enabled"
 	register "TcssAuxOri" = "1"
 	register "typec_aux_bias_pads[0]" = "{.pad_auxp_dc = GPP_E22, .pad_auxn_dc = GPP_E23}"
+	register "usb2_ports[1]" = "USB2_PORT_MAX(OC1)" # set MAX to USB2_C1 for eye diagram
 	register "usb2_ports[2]" = "USB2_PORT_EMPTY" # Disable USB2_C2
 	register "usb2_ports[3]" = "USB2_PORT_EMPTY" # M.2 WWAN
 	register "usb2_ports[7]" = "USB2_PORT_MID(OC_SKIP)" # Type-A MLB Port