diff --git a/src/main/scala/devices/spi/SPIPeriphery.scala b/src/main/scala/devices/spi/SPIPeriphery.scala
index e5cdd4e..bd77259 100644
--- a/src/main/scala/devices/spi/SPIPeriphery.scala
+++ b/src/main/scala/devices/spi/SPIPeriphery.scala
@@ -23,8 +23,8 @@ trait HasPeripherySPI extends HasSystemNetworks {
 trait HasPeripherySPIBundle {
   val spis: HeterogeneousBag[SPIPortIO]
 
-  def SPItoGPIOPins(dummy: Int = 1): Seq[SPIGPIOPort] = spis.map { s =>
-    val pin = Module(new SPIGPIOPort(s.c))
+  def SPItoGPIOPins(sync_stages: Int = 0): Seq[SPIGPIOPort] = spis.map { s =>
+    val pin = Module(new SPIGPIOPort(s.c, sync_stages))
     pin.io.spi <> s
     pin
   }
diff --git a/src/main/scala/devices/uart/UARTPeriphery.scala b/src/main/scala/devices/uart/UARTPeriphery.scala
index a0e83ff..05c4a33 100644
--- a/src/main/scala/devices/uart/UARTPeriphery.scala
+++ b/src/main/scala/devices/uart/UARTPeriphery.scala
@@ -29,8 +29,8 @@ trait HasPeripheryUARTBundle {
     uarts.foreach { _.rxd := UInt(1) }
   }
 
-  def UARTtoGPIOPins(dummy: Int = 1): Seq[UARTGPIOPort] = uarts.map { u =>
-    val pin = Module(new UARTGPIOPort)
+  def UARTtoGPIOPins(sync_stages: Int = 0): Seq[UARTGPIOPort] = uarts.map { u =>
+    val pin = Module(new UARTGPIOPort(sync_stages))
     pin.io.uart <> u
     pin
   }