diff --git a/tools/perf/util/arm-spe-decoder/Build b/tools/perf/util/arm-spe-decoder/Build
index ab500e0efe24..97a298d1e279 100644
--- a/tools/perf/util/arm-spe-decoder/Build
+++ b/tools/perf/util/arm-spe-decoder/Build
@@ -1 +1,3 @@
 perf-util-y += arm-spe-pkt-decoder.o arm-spe-decoder.o
+
+CFLAGS_arm-spe-pkt-decoder.o += -I$(srctree)/tools/arch/arm64/include/ -I$(OUTPUT)arch/arm64/include/generated/
diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c b/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c
index 67ca356100e5..b74f887a48f2 100644
--- a/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c
+++ b/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c
@@ -15,6 +15,8 @@
 
 #include "arm-spe-pkt-decoder.h"
 
+#include "../../arm64/include/asm/cputype.h"
+
 static const char * const arm_spe_packet_name[] = {
 	[ARM_SPE_PAD]		= "PAD",
 	[ARM_SPE_END]		= "END",
@@ -308,6 +310,11 @@ static const struct ev_string common_ev_strings[] = {
 	{ .event = 0, .desc = NULL },
 };
 
+static const struct ev_string n1_event_strings[] = {
+	{ .event = 12, .desc = "LATE-PREFETCH" },
+	{ .event = 0, .desc = NULL },
+};
+
 static u64 print_event_list(int *err, char **buf, size_t *buf_len,
 			    const struct ev_string *ev_strings, u64 payload)
 {
@@ -319,6 +326,26 @@ static u64 print_event_list(int *err, char **buf, size_t *buf_len,
 	return payload;
 }
 
+struct event_print_handle {
+	const struct midr_range *midr_ranges;
+	const struct ev_string *ev_strings;
+};
+
+#define EV_PRINT(range, strings)			\
+	{					\
+		.midr_ranges = range,		\
+		.ev_strings = strings,	\
+	}
+
+static const struct midr_range n1_event_encoding_cpus[] = {
+	MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N1),
+	{},
+};
+
+static const struct event_print_handle event_print_handles[] = {
+	EV_PRINT(n1_event_encoding_cpus, n1_event_strings),
+};
+
 static int arm_spe_pkt_desc_event(const struct arm_spe_pkt *packet,
 				  char *buf, size_t buf_len)
 {
@@ -326,7 +353,17 @@ static int arm_spe_pkt_desc_event(const struct arm_spe_pkt *packet,
 	int err = 0;
 
 	arm_spe_pkt_out_string(&err, &buf, &buf_len, "EV");
-	print_event_list(&err, &buf, &buf_len, common_ev_strings, payload);
+	payload = print_event_list(&err, &buf, &buf_len, common_ev_strings,
+				   payload);
+
+	/* Try to decode IMPDEF bits for known CPUs */
+	for (unsigned int i = 0; i < ARRAY_SIZE(event_print_handles); i++) {
+		if (is_midr_in_range_list(packet->midr,
+					  event_print_handles[i].midr_ranges))
+			payload = print_event_list(&err, &buf, &buf_len,
+						   event_print_handles[i].ev_strings,
+						   payload);
+	}
 
 	return err;
 }
diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h b/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h
index a457821f3bcc..a3300bec4990 100644
--- a/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h
+++ b/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h
@@ -11,7 +11,7 @@
 #include <stddef.h>
 #include <stdint.h>
 
-#define ARM_SPE_PKT_DESC_MAX		256
+#define ARM_SPE_PKT_DESC_MAX		512
 
 #define ARM_SPE_NEED_MORE_BYTES		-1
 #define ARM_SPE_BAD_PACKET		-2