diff --git a/target/linux/mvebu/patches-4.14/423-ARM-dts-armada-385-linksys-Disable-internal-RTC.patch b/target/linux/mvebu/patches-4.14/423-ARM-dts-armada-385-linksys-Disable-internal-RTC.patch
new file mode 100644
index 0000000000..ea5ad5acad
--- /dev/null
+++ b/target/linux/mvebu/patches-4.14/423-ARM-dts-armada-385-linksys-Disable-internal-RTC.patch
@@ -0,0 +1,28 @@
+From e1cac198fea08c31ec204bed84c279ab05d20389 Mon Sep 17 00:00:00 2001
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Date: Sat, 17 Mar 2018 15:22:25 +0100
+Subject: ARM: dts: armada-385-linksys: Disable internal RTC
+
+The internal RTC does not work correctly on these Linksys boards based
+on Marvell SoCs. For me it only shows Wed Dec 31 23:59:59 1969 and for
+others it is off by 3 minutes in 10 minutes running, this was reported
+by multiple users. On the Linksys Mamba device the device tree comment
+says that no crystal is connected to the internal RTC, this is probably
+also true for the other devices.
+
+Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+---
+ arch/arm/boot/dts/armada-385-linksys.dtsi | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+--- a/arch/arm/boot/dts/armada-385-linksys.dtsi
++++ b/arch/arm/boot/dts/armada-385-linksys.dtsi
+@@ -302,3 +302,8 @@
+ 	status = "okay";
+ 	usb-phy = <&usb3_1_phy>;
+ };
++
++&rtc {
++	/* No crystal connected to the internal RTC */
++	status = "disabled";
++};