diff --git a/drivers/misc/optee.c b/drivers/misc/optee.c
index f3e52310bd7..665bc282091 100644
--- a/drivers/misc/optee.c
+++ b/drivers/misc/optee.c
@@ -27,6 +27,7 @@
 #include <fcntl.h>
 #include <nuttx/tee.h>
 #include <nuttx/nuttx.h>
+#include <nuttx/cache.h>
 #include <nuttx/drivers/optee.h>
 #include <nuttx/fs/fs.h>
 #include <nuttx/kmalloc.h>
@@ -345,6 +346,10 @@ optee_shm_to_page_list(FAR struct optee_shm *shm, FAR uintptr_t *list_pa)
       *list_pa = optee_va_to_pa(list) | pgoff;
     }
 
+#ifndef CONFIG_ARCH_USE_MMU
+  up_clean_dcache((uintptr_t)list, (uintptr_t)list + list_size);
+#endif
+
   return list;
 }
 
@@ -609,6 +614,10 @@ static int optee_memref_to_msg_param(FAR struct optee_priv_data *priv,
       mp->u.tmem.size = shm->length;
     }
 
+#ifndef CONFIG_ARCH_USE_MMU
+  up_clean_dcache(shm->addr, shm->addr + shm->length);
+#endif
+
   return 0;
 }
 
@@ -671,7 +680,7 @@ static int optee_from_msg_param(FAR struct tee_ioctl_param *params,
     {
       FAR const struct optee_msg_param *mp = mparams + n;
       FAR struct tee_ioctl_param *p = params + n;
-      FAR struct optee_shm *shm;
+      FAR struct optee_shm *shm = NULL;
 
       switch (mp->attr & OPTEE_MSG_ATTR_TYPE_MASK)
         {
@@ -710,10 +719,18 @@ static int optee_from_msg_param(FAR struct tee_ioctl_param *params,
             p->attr = TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_INPUT +
                       mp->attr - OPTEE_MSG_ATTR_TYPE_RMEM_INPUT;
             p->b = mp->u.rmem.size;
+            shm = (FAR struct optee_shm *)(uintptr_t)mp->u.tmem.shm_ref;
             break;
           default:
             return -EINVAL;
         }
+
+#ifndef CONFIG_ARCH_USE_MMU
+      if (shm)
+        {
+          up_invalidate_dcache(shm->addr, shm->addr + shm->length);
+        }
+#endif
     }
 
   return 0;
diff --git a/drivers/misc/optee_smc.c b/drivers/misc/optee_smc.c
index 7be22dee5bc..9672f269ac6 100644
--- a/drivers/misc/optee_smc.c
+++ b/drivers/misc/optee_smc.c
@@ -24,6 +24,7 @@
  * Included Files
  ****************************************************************************/
 
+#include <nuttx/cache.h>
 #include <nuttx/kmalloc.h>
 #include <errno.h>
 #include <syslog.h>
@@ -314,11 +315,17 @@ int optee_transport_call(FAR struct optee_priv_data *priv_,
   smccc_res_t res;
   smccc_res_t par;
   uintptr_t arg_pa;
+#ifndef CONFIG_ARCH_USE_MMU
+  size_t arg_size = OPTEE_MSG_GET_ARG_SIZE(arg->num_params);
+
+  up_clean_dcache((uintptr_t)arg, (uintptr_t)arg + arg_size);
+#endif
 
   memset(&par, 0, sizeof(smccc_res_t));
 
   par.a0 = OPTEE_SMC_CALL_WITH_ARG;
   arg_pa = optee_va_to_pa(arg);
+
   reg_pair_from_64(arg_pa, &par.a1, &par.a2);
 
   for (; ; )
@@ -335,6 +342,9 @@ int optee_transport_call(FAR struct optee_priv_data *priv_,
         }
       else
         {
+#ifndef CONFIG_ARCH_USE_MMU
+          up_invalidate_dcache((uintptr_t)arg, (uintptr_t)arg + arg_size);
+#endif
           return (int)res.a0;
         }
     }