diff --git a/sys/riscv/allwinner/files.allwinner b/sys/riscv/allwinner/files.allwinner
--- a/sys/riscv/allwinner/files.allwinner
+++ b/sys/riscv/allwinner/files.allwinner
@@ -1,5 +1,6 @@
 
 arm/allwinner/aw_gpio.c			optional gpio aw_gpio fdt
+arm/allwinner/aw_mmc.c			optional mmc aw_mmc fdt | mmccam aw_mmc fdt
 arm/allwinner/aw_rtc.c			optional aw_rtc fdt
 arm/allwinner/aw_syscon.c		optional syscon
 arm/allwinner/aw_sid.c			optional aw_sid nvmem
diff --git a/sys/riscv/conf/std.allwinner b/sys/riscv/conf/std.allwinner
--- a/sys/riscv/conf/std.allwinner
+++ b/sys/riscv/conf/std.allwinner
@@ -7,6 +7,7 @@
 
 device		aw_ccu		# Allwinner clock controller
 device		aw_gpio		# Allwinner GPIO controller
+device		aw_mmc		# Allwinner SD/MMC controller
 device		aw_rtc		# Allwinner Real-time Clock
 device		aw_sid		# Allwinner Secure ID EFUSE
 device		aw_timer	# Allwinner Timer