diff --git a/target/linux/realtek/patches-6.6/720-add-rtl-phy.patch b/target/linux/realtek/patches-6.6/720-add-rtl-phy.patch
new file mode 100644
index 00000000000..c6f8e6508b4
--- /dev/null
+++ b/target/linux/realtek/patches-6.6/720-add-rtl-phy.patch
@@ -0,0 +1,39 @@
+From 89f71ebb355c624320c2b0ace8ae9488ff53cbeb Mon Sep 17 00:00:00 2001
+From: Birger Koblitz <mail@birger-koblitz.de>
+Date: Tue, 5 Jan 2021 20:40:52 +0100
+Subject: PHY: Add realtek PHY
+
+This fixes the build problems for the REALTEK target by adding a proper
+configuration option for the phy module.
+
+Submitted-by: Birger Koblitz <mail@birger-koblitz.de>
+---
+ drivers/net/phy/Kconfig                       | 6 ++++++
+ drivers/net/phy/Makefile                      | 1 +
+ 2 files changed, 7 insertions(+)
+
+--- a/drivers/net/phy/Kconfig
++++ b/drivers/net/phy/Kconfig
+@@ -354,6 +354,12 @@ config REALTEK_PHY
+ 	help
+ 	  Supports the Realtek 821x PHY.
+ 
++config REALTEK_SOC_PHY
++	tristate "Realtek SoC PHYs"
++	depends on RTL83XX
++	help
++	  Supports the PHYs found in combination with Realtek Switch SoCs
++
+ config RENESAS_PHY
+ 	tristate "Renesas PHYs"
+ 	help
+--- a/drivers/net/phy/Makefile
++++ b/drivers/net/phy/Makefile
+@@ -89,6 +89,7 @@ obj-$(CONFIG_NXP_C45_TJA11XX_PHY)	+= nxp
+ obj-$(CONFIG_NXP_TJA11XX_PHY)	+= nxp-tja11xx.o
+ obj-$(CONFIG_QSEMI_PHY)		+= qsemi.o
+ obj-$(CONFIG_REALTEK_PHY)	+= realtek.o
++obj-$(CONFIG_REALTEK_SOC_PHY)   += rtl83xx-phy.o
+ obj-$(CONFIG_RENESAS_PHY)	+= uPD60620.o
+ obj-$(CONFIG_ROCKCHIP_PHY)	+= rockchip.o
+ obj-$(CONFIG_SMSC_PHY)		+= smsc.o