diff --git a/src/mainboard/google/zork/variants/dirinboz/overridetree.cb b/src/mainboard/google/zork/variants/dirinboz/overridetree.cb
index 6416a5c807..554cdeac94 100644
--- a/src/mainboard/google/zork/variants/dirinboz/overridetree.cb
+++ b/src/mainboard/google/zork/variants/dirinboz/overridetree.cb
@@ -21,7 +21,7 @@ chip soc/amd/picasso
 	register "telemetry_vddcr_soc_offset" = "167"
 	# End : OPN Performance Configuration
 
-	# USB 2.0 strength
+	# USB 2.0 strength - MB type-C C0
 	register "usb_2_port_tune_params[0]" = "{
 		.com_pds_tune = 0x07,
 		.sq_rx_tune = 0x3,
@@ -34,27 +34,27 @@ chip soc/amd/picasso
 		.tx_res_tune = 0x01,
 	}"
 
-	# USB 2.0 strength
+	# USB 2.0 strength - DB type-A
 	register "usb_2_port_tune_params[2]" = "{
 		.com_pds_tune = 0x07,
 		.sq_rx_tune = 0x3,
 		.tx_fsls_tune = 0x3,
 		.tx_pre_emp_amp_tune = 0x03,
 		.tx_pre_emp_pulse_tune = 0x0,
-		.tx_rise_tune = 0x1,
+		.tx_rise_tune = 0x0,
 		.tx_vref_tune = 0xe,
 		.tx_hsxv_tune = 0x3,
 		.tx_res_tune = 0x01,
 	}"
 
-	# USB 2.0 strength
+	# USB 2.0 strength - DB type-C C1
 	register "usb_2_port_tune_params[3]" = "{
 		.com_pds_tune = 0x07,
 		.sq_rx_tune = 0x3,
 		.tx_fsls_tune = 0x3,
 		.tx_pre_emp_amp_tune = 0x03,
 		.tx_pre_emp_pulse_tune = 0x0,
-		.tx_rise_tune = 0x1,
+		.tx_rise_tune = 0x0,
 		.tx_vref_tune = 0xe,
 		.tx_hsxv_tune = 0x3,
 		.tx_res_tune = 0x01,