+From 036c72ed4475afb757af568d40db0973a5dafcc8 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Tue, 27 Nov 2018 16:55:14 +0000
+Subject: [PATCH] ARM: dts: bcm283x: Set downshift-after for Pi 3B+
+
+Enable the auto-downshift feature on Raspberry Pi 3B+ so that a link
+can eventually be established using a cable with pairs C and/or D
+missing or broken in a 1000Mbps-capable port.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi
++++ b/arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi
+@@ -31,6 +31,7 @@
+ reg = <1>;
+ microchip,eee-enabled;
+ microchip,tx-lpi-timer = <600>; /* non-aggressive*/
++ microchip,downshift-after = <2>;
+ microchip,led-modes = <
+ LAN78XX_LINK_1000_ACTIVITY
+ LAN78XX_LINK_10_100_ACTIVITY