diff --git a/src/target/adiv5.c b/src/target/adiv5.c
index f535c25..f8e6b58 100644
--- a/src/target/adiv5.c
+++ b/src/target/adiv5.c
@@ -470,8 +470,19 @@ static void adiv5_component_probe(ADIv5_AP_t *ap, uint32_t addr, int recursion,
 		if (recursion == 0) {
 			ap->ap_designer = designer;
 			ap->ap_partno   = partno;
-			if ((ap->ap_designer == AP_DESIGNER_ATMEL) && (ap->ap_partno == 0xcd0))
-				cortexm_probe(ap);
+			if ((ap->ap_designer == AP_DESIGNER_ATMEL) && (ap->ap_partno == 0xcd0)) {
+#define SAMX5X_DSU_CTRLSTAT			0x41002100
+#define SAMX5X_STATUSB_PROT			(1 << 16)
+				uint32_t ctrlstat = adiv5_mem_read32(ap, SAMX5X_DSU_CTRLSTAT);
+				if (ctrlstat & SAMX5X_STATUSB_PROT) {
+					/* A protected SAMx5x device is found.
+					 * Handle it here, as access only to limited memory region
+					 * is allowed
+					 */
+					cortexm_probe(ap);
+					return;
+				}
+			}
 		}
 		for (int i = 0; i < 960; i++) {
 			adiv5_dp_error(ap->dp);
diff --git a/src/target/cortexm.c b/src/target/cortexm.c
index 1fec2a0..32c262d 100644
--- a/src/target/cortexm.c
+++ b/src/target/cortexm.c
@@ -327,8 +327,9 @@ bool cortexm_probe(ADIv5_AP_t *ap)
 		t->core = "M0";
 		break;
 	default:
-		DEBUG_WARN("Unexpected CortexM CPUID partno %04" PRIx32 "\n",
-				   cpuid_partno);
+		if (ap->ap_designer != AP_DESIGNER_ATMEL) /* Protected Atmel device?*/{
+			DEBUG_WARN("Unexpected CortexM CPUID partno %04x\n", cpuid_partno);
+		}
 	}
 	DEBUG_INFO("CPUID 0x%08" PRIx32 " (%s var %" PRIx32 " rev %" PRIx32 ")\n",
 			   t->cpuid,