diff --git a/src/mainboard/google/mancomb/Kconfig b/src/mainboard/google/mancomb/Kconfig
index 3d798efe4c..de17454ee9 100644
--- a/src/mainboard/google/mancomb/Kconfig
+++ b/src/mainboard/google/mancomb/Kconfig
@@ -28,6 +28,9 @@ config BOARD_SPECIFIC_OPTIONS
 	select MAINBOARD_HAS_CHROMEOS
 	select MAINBOARD_HAS_I2C_TPM_CR50
 	select MAINBOARD_HAS_TPM2
+	select PCIEXP_ASPM
+	select PCIEXP_CLK_PM
+	select PCIEXP_COMMON_CLOCK
 	select PSP_DISABLE_POSTCODES
 	select SOC_AMD_CEZANNE
 	select SOC_AMD_COMMON_BLOCK_USE_ESPI
diff --git a/src/mainboard/google/mancomb/port_descriptors.c b/src/mainboard/google/mancomb/port_descriptors.c
index b992906c9b..30996e951e 100644
--- a/src/mainboard/google/mancomb/port_descriptors.c
+++ b/src/mainboard/google/mancomb/port_descriptors.c
@@ -12,6 +12,7 @@ static const fsp_dxio_descriptor mancomb_czn_dxio_descriptors[] = {
 		.end_logical_lane = 0,
 		.device_number = 2,
 		.function_number = 1,
+		.link_aspm = ASPM_L1,
 		.turn_off_unused_lanes = true,
 		.clk_req = CLK_REQ0,
 		.gpio_group_id = GPIO_29,
@@ -24,6 +25,7 @@ static const fsp_dxio_descriptor mancomb_czn_dxio_descriptors[] = {
 		.end_logical_lane = 1,
 		.device_number = 2,
 		.function_number = 2,
+		.link_aspm = ASPM_L1,
 		.turn_off_unused_lanes = true,
 		.clk_req = CLK_REQ1,
 		.gpio_group_id = GPIO_70,
@@ -36,6 +38,7 @@ static const fsp_dxio_descriptor mancomb_czn_dxio_descriptors[] = {
 		.end_logical_lane = 2,
 		.device_number = 2,
 		.function_number = 3,
+		.link_aspm = ASPM_L1,
 		.turn_off_unused_lanes = true,
 		.clk_req = CLK_REQ2,
 		.gpio_group_id = GPIO_18,
@@ -48,6 +51,7 @@ static const fsp_dxio_descriptor mancomb_czn_dxio_descriptors[] = {
 		.end_logical_lane = 7,
 		.device_number = 2,
 		.function_number = 4,
+		.link_aspm = ASPM_L1,
 		.turn_off_unused_lanes = true,
 		.clk_req = CLK_REQ3,
 		.gpio_group_id = GPIO_40,