diff --git a/arch/arm/src/nrf52/nrf52_ppi.c b/arch/arm/src/nrf52/nrf52_ppi.c
index dcc6d41687e..1a8f412dcdc 100644
--- a/arch/arm/src/nrf52/nrf52_ppi.c
+++ b/arch/arm/src/nrf52/nrf52_ppi.c
@@ -79,33 +79,33 @@ void nrf52_ppi_channel_enable(uint8_t ch, bool enable)
  * Name: nrf52_ppi_set_event_ep
  ****************************************************************************/
 
-void nrf52_ppi_set_event_ep(uint8_t ch, volatile uint32_t *event_reg)
+void nrf52_ppi_set_event_ep(uint8_t ch, uint32_t event_reg)
 {
   DEBUGASSERT(ch < NRF52_PPI_NUM_CONFIGURABLE_CHANNELS);
 
-  putreg32((uint32_t)event_reg, NRF52_PPI_CHEEP(ch));
+  putreg32(event_reg, NRF52_PPI_CHEEP(ch));
 }
 
 /****************************************************************************
  * Name: nrf52_ppi_set_task_ep
  ****************************************************************************/
 
-void nrf52_ppi_set_task_ep(uint8_t ch, volatile uint32_t *task_reg)
+void nrf52_ppi_set_task_ep(uint8_t ch, uint32_t task_reg)
 {
   DEBUGASSERT(ch < NRF52_PPI_NUM_CONFIGURABLE_CHANNELS);
 
-  putreg32((uint32_t)task_reg, NRF52_PPI_CHTEP(ch));
+  putreg32(task_reg, NRF52_PPI_CHTEP(ch));
 }
 
 /****************************************************************************
  * Name: nrf52_ppi_set_task2_ep
  ****************************************************************************/
 
-void nrf52_ppi_set_task2_ep(uint8_t ch, volatile uint32_t *task_reg)
+void nrf52_ppi_set_task2_ep(uint8_t ch, uint32_t task_reg)
 {
   DEBUGASSERT(ch < NRF52_PPI_NUM_CHANNELS);
 
-  putreg32((uint32_t)task_reg, NRF52_PPI_FORKTEP(ch));
+  putreg32(task_reg, NRF52_PPI_FORKTEP(ch));
 }
 
 /****************************************************************************
diff --git a/arch/arm/src/nrf52/nrf52_ppi.h b/arch/arm/src/nrf52/nrf52_ppi.h
index 299eda8ac55..81c1ed46930 100644
--- a/arch/arm/src/nrf52/nrf52_ppi.h
+++ b/arch/arm/src/nrf52/nrf52_ppi.h
@@ -86,7 +86,7 @@ void nrf52_ppi_channel_enable(uint8_t ch, bool enable);
  *
  ****************************************************************************/
 
-void nrf52_ppi_set_event_ep(uint8_t ch, volatile uint32_t *event_reg);
+void nrf52_ppi_set_event_ep(uint8_t ch, uint32_t event_reg);
 
 /****************************************************************************
  * Name: nrf52_ppi_set_task_ep
@@ -100,7 +100,7 @@ void nrf52_ppi_set_event_ep(uint8_t ch, volatile uint32_t *event_reg);
  *
  ****************************************************************************/
 
-void nrf52_ppi_set_task_ep(uint8_t ch, volatile uint32_t *task_reg);
+void nrf52_ppi_set_task_ep(uint8_t ch, uint32_t task_reg);
 
 /****************************************************************************
  * Name: nrf52_ppi_set_task2_ep
@@ -114,7 +114,7 @@ void nrf52_ppi_set_task_ep(uint8_t ch, volatile uint32_t *task_reg);
  *
  ****************************************************************************/
 
-void nrf52_ppi_set_task2_ep(uint8_t ch, volatile uint32_t *task_reg);
+void nrf52_ppi_set_task2_ep(uint8_t ch, uint32_t task_reg);
 
 /****************************************************************************
  * Name: nrf52_ppi_grp_channel_enable