diff --git a/arch/arm/src/cxd56xx/cxd56_udmac.c b/arch/arm/src/cxd56xx/cxd56_udmac.c
index b6f88e108b..fdcfe71d0d 100644
--- a/arch/arm/src/cxd56xx/cxd56_udmac.c
+++ b/arch/arm/src/cxd56xx/cxd56_udmac.c
@@ -442,8 +442,8 @@ void cxd56_rxudmasetup(DMA_HANDLE handle, uintptr_t paddr, uintptr_t maddr,
   /* Configure the primary channel descriptor */
 
   desc         = cxd56_get_descriptor(dmach, false);
-  desc->srcend = (uint32_t *)paddr;
-  desc->dstend = (uint32_t *)(maddr + nbytes - xfersize);
+  desc->srcend = paddr;
+  desc->dstend = (maddr + nbytes - xfersize);
 
   /* No source increment, destination increments according to transfer size.
    * No privileges.  Arbitrate after each transfer. Default priority.
@@ -539,8 +539,8 @@ void cxd56_txudmasetup(DMA_HANDLE handle, uintptr_t paddr, uintptr_t maddr,
   /* Configure the primary channel descriptor */
 
   desc         = cxd56_get_descriptor(dmach, false);
-  desc->srcend = (uint32_t *)(maddr + nbytes - xfersize);
-  desc->dstend = (uint32_t *)paddr;
+  desc->srcend = (maddr + nbytes - xfersize);
+  desc->dstend = paddr;
 
   /* No destination increment, source increments according to transfer size.
    * No privileges.  Arbitrate after each transfer. Default priority.
diff --git a/arch/arm/src/cxd56xx/hardware/cxd56_udmac.h b/arch/arm/src/cxd56xx/hardware/cxd56_udmac.h
index 297e366fd6..156542cc1c 100644
--- a/arch/arm/src/cxd56xx/hardware/cxd56_udmac.h
+++ b/arch/arm/src/cxd56xx/hardware/cxd56_udmac.h
@@ -135,10 +135,10 @@
 
 struct dma_descriptor_s
 {
-    volatile void * volatile srcend;
-    volatile void * volatile dstend;
-    volatile uint32_t        ctrl;
-    volatile uint32_t        user;
+    volatile uintptr_t srcend;
+    volatile uintptr_t dstend;
+    volatile uint32_t  ctrl;
+    volatile uint32_t  user;
 };
 
 /****************************************************************************