diff --git a/root/target/linux/bcm27xx/patches-5.4/950-0785-fixcm4soundboss2.patch.patch b/root/target/linux/bcm27xx/patches-5.4/950-0785-fixcm4soundboss2.patch.patch
new file mode 100644
index 00000000..1a28c4c7
--- /dev/null
+++ b/root/target/linux/bcm27xx/patches-5.4/950-0785-fixcm4soundboss2.patch.patch
@@ -0,0 +1,32 @@
+--- sound.mk	2022-01-04 05:31:50.781429226 +0800
++++ sound1.mk	2022-01-04 05:22:47.665926000 +0800
+@@ -130,6 +130,29 @@
+ 
+ $(eval $(call KernelPackage,sound-soc-allo-boss-dac))
+ 
++
++define KernelPackage/sound-soc-allo-boss2-dac
++  TITLE:=Support for Allo Boss2 DAC
++  KCONFIG:= \
++    CONFIG_SND_AUDIO_GRAPH_CARD \
++    CONFIG_SND_BCM2708_SOC_ALLO_BOSS2_DAC
++  FILES:= \
++    $(LINUX_DIR)/sound/soc/bcm/snd-soc-allo-boss2-dac.ko
++  AUTOLOAD:=$(call AutoLoad,68,snd-soc-allo-boss2-dac)
++  DEPENDS:= \
++    kmod-sound-soc-bcm2835-i2s \
++    +kmod-i2c-bcm2835 \
++    +kmod-regmap-i2c
++  $(call AddDepends/sound)
++endef
++
++define KernelPackage/sound-soc-allo-boss2-dac/description
++  This package contains support for Allo Boss2 DAC
++endef
++
++$(eval $(call KernelPackage,sound-soc-allo-boss2-dac))
++
++
+ define KernelPackage/sound-soc-allo-digione
+   TITLE:=Support for Allo Piano DigiOne
+   KCONFIG:= \