--- /dev/null
+From 1338e5cc4b23a2215a881eccca6ca9009b29efdf Mon Sep 17 00:00:00 2001
+From: James Hughes <JamesH65@users.noreply.github.com>
+Date: Tue, 13 Nov 2018 16:51:21 +0000
+Subject: [PATCH 440/454] Update README (#2750)
+
+Small update to the DT blob docs to include the axiperf option.
+
+Signed-off-by: James Hughes <james.hughes@raspberrypi.org>
+---
+ arch/arm/boot/dts/overlays/README | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -89,6 +89,11 @@ Params:
+ audio Set to "on" to enable the onboard ALSA audio
+ interface (default "off")
+
++ axiperf Set to "on" to enable the AXI bus performance
++ monitors.
++ See /sys/kernel/debug/raspberrypi_axi_monitor
++ for the results.
++
+ eee Enable Energy Efficient Ethernet support for
+ compatible devices (default "on"). See also
+ "tx_lpi_timer".