3 files changed, 25 insertions, 0 deletions
diff --git a/src/mainboard/google/brya/variants/kuldax/gpio.c b/src/mainboard/google/brya/variants/kuldax/gpio.c
index 5282298f95..556e8b694c 100644
--- a/src/mainboard/google/brya/variants/kuldax/gpio.c
+++ b/src/mainboard/google/brya/variants/kuldax/gpio.c
@@ -25,6 +25,11 @@ static const struct pad_config override_gpio_table[] = {
 	/* B8  : ISH_I2C1_SCL ==> PCH_I2C_MISCB_SCL */
 	PAD_CFG_NF_LOCK(GPP_B8, NONE, NF2, LOCK_CONFIG),
 
+	/* C3 : SML0CLK ==> USB_C0_AUX_DC_P */
+	PAD_CFG_NF(GPP_C3, NONE, DEEP, NF6),
+	/* C4 : SML0DATA ==> USB_C0_AUX_DC_N */
+	PAD_CFG_NF(GPP_C4, NONE, DEEP, NF6),
+
 	/* D0  : ISH_GP0 ==> NC */
 	PAD_NC_LOCK(GPP_D0, NONE, LOCK_CONFIG),
 	/* D1  : ISH_GP1 ==> NC */
diff --git a/src/mainboard/google/brya/variants/kuldax/overridetree.cb b/src/mainboard/google/brya/variants/kuldax/overridetree.cb
index 35af1cf50c..6168b2fd22 100644
--- a/src/mainboard/google/brya/variants/kuldax/overridetree.cb
+++ b/src/mainboard/google/brya/variants/kuldax/overridetree.cb
@@ -9,6 +9,10 @@ fw_config
 		option BJ_POWER_65W	2
 		option BJ_POWER_135W	3
 	end
+	field MB_USBC 6 7
+		option TC_USB4	0
+		option TC_USB3	1
+	end
 end
 
 chip soc/intel/alderlake
@@ -135,7 +139,17 @@ chip soc/intel/alderlake
 				.flags = PCIE_RP_LTR | PCIE_RP_AER,
 			}"
 		end
+		device ref tbt_pcie_rp0 on
+			probe MB_USBC TC_USB4
+		end
+		device ref tbt_pcie_rp1 on
+			probe MB_USBC TC_USB4
+		end
+		device ref tbt_pcie_rp2 on
+			probe MB_USBC TC_USB4
+		end
 		device ref tcss_dma0 on
+			probe MB_USBC TC_USB4
 			chip drivers/intel/usb4/retimer
 				register "dfp[0].power_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_E4)"
 				use tcss_usb3_port1 as dfp[0].typec_port
diff --git a/src/mainboard/google/brya/variants/kuldax/variant.c b/src/mainboard/google/brya/variants/kuldax/variant.c
index e9b11a639b..b7cba968a5 100644
--- a/src/mainboard/google/brya/variants/kuldax/variant.c
+++ b/src/mainboard/google/brya/variants/kuldax/variant.c
@@ -14,4 +14,10 @@ void variant_update_soc_chip_config(struct soc_intel_alderlake_config *config)
 {
 	config->cnvi_bt_audio_offload = fw_config_probe(FW_CONFIG(AUDIO,
 							NAU88L25B_I2S));
+
+	if (fw_config_probe(FW_CONFIG(MB_USBC, TC_USB3))) {
+		config->tcss_aux_ori = 1;
+		config->typec_aux_bias_pads[0].pad_auxp_dc = GPP_C3;
+		config->typec_aux_bias_pads[0].pad_auxn_dc = GPP_C4;
+	}
 }