diff --git a/src/board/system76/serw13/board.mk b/src/board/system76/serw13/board.mk
index 4deaafe..8d990ef 100644
--- a/src/board/system76/serw13/board.mk
+++ b/src/board/system76/serw13/board.mk
@@ -27,6 +27,9 @@ CFLAGS+=-DI2C_SMBUS=I2C_4
 # Set touchpad PS2 bus
 CFLAGS+=-DPS2_TOUCHPAD=PS2_3
 
+# Set USB-PD I2C bus
+CFLAGS+=-DI2C_USBPD=I2C_1
+
 # Set smart charger parameters
 # TODO: actually bq24800
 # XXX: What is PRS3?
@@ -37,6 +40,9 @@ CFLAGS+=\
 	-DCHARGER_CHARGE_VOLTAGE=13050 \
 	-DCHARGER_INPUT_CURRENT=14000
 
+# Set USB-PD parameters
+USBPD=tps65987
+
 # Set CPU power limits in watts
 CFLAGS+=\
 	-DPOWER_LIMIT_AC=280 \
diff --git a/src/board/system76/serw13/gpio.c b/src/board/system76/serw13/gpio.c
index eb6b3e2..cde29e4 100644
--- a/src/board/system76/serw13/gpio.c
+++ b/src/board/system76/serw13/gpio.c
@@ -15,6 +15,7 @@ struct Gpio __code DGPU_PWR_EN =    GPIO(H, 4);
 struct Gpio __code EC_EN =          GPIO(B, 6); // renamed to SUSBC_EC#
 struct Gpio __code EC_RSMRST_N =    GPIO(E, 5);
 struct Gpio __code GC6_FB_EN =      GPIO(D, 3);
+struct Gpio __code JACK_IN_N =      GPIO(E, 6);
 struct Gpio __code LAN_WAKEUP_N =   GPIO(B, 2);
 struct Gpio __code LED_ACIN =       GPIO(H, 2);
 struct Gpio __code LED_BAT_CHG =    GPIO(H, 5);
@@ -26,6 +27,7 @@ struct Gpio __code PCH_DPWROK_EC =  GPIO(F, 3);
 struct Gpio __code PCH_PWROK_EC =   GPIO(C, 6);
 struct Gpio __code PWR_BTN_N =      GPIO(D, 5);
 struct Gpio __code PWR_SW_N =       GPIO(B, 3);
+struct Gpio __code SINK_CTRL =      GPIO(F, 7);
 struct Gpio __code SLP_SUS_N =      GPIO(H, 7);
 struct Gpio __code SWI_N =          GPIO(B, 5);
 struct Gpio __code USB_PWR_EN_N =   GPIO(E, 3);
diff --git a/src/board/system76/serw13/include/board/gpio.h b/src/board/system76/serw13/include/board/gpio.h
index 7e35062..a667f01 100644
--- a/src/board/system76/serw13/include/board/gpio.h
+++ b/src/board/system76/serw13/include/board/gpio.h
@@ -20,6 +20,7 @@ extern struct Gpio __code DGPU_PWR_EN;
 extern struct Gpio __code EC_EN;
 extern struct Gpio __code EC_RSMRST_N;
 extern struct Gpio __code GC6_FB_EN;
+extern struct Gpio __code JACK_IN_N;
 extern struct Gpio __code LAN_WAKEUP_N;
 extern struct Gpio __code LED_ACIN;
 #define HAVE_LED_AIRPLANE_N 0
@@ -33,6 +34,7 @@ extern struct Gpio __code PCH_PWROK_EC;
 #define HAVE_PM_PWROK 0
 extern struct Gpio __code PWR_BTN_N;
 extern struct Gpio __code PWR_SW_N;
+extern struct Gpio __code SINK_CTRL;
 extern struct Gpio __code SLP_SUS_N;
 #define HAVE_SUSWARN_N 0
 #define HAVE_SUS_PWR_ACK 0