diff --git a/sys/conf/files.arm64 b/sys/conf/files.arm64
--- a/sys/conf/files.arm64
+++ b/sys/conf/files.arm64
@@ -669,6 +669,7 @@
 arm64/rockchip/rk_pinctrl.c			optional fdt rk_pinctrl soc_rockchip_rk3328 | fdt rk_pinctrl soc_rockchip_rk3399 | fdt soc_rockchip_rk3568
 arm64/rockchip/rk_gpio.c			optional fdt rk_gpio soc_rockchip_rk3328 | fdt rk_gpio soc_rockchip_rk3399 | fdt soc_rockchip_rk3568
 arm64/rockchip/rk_iodomain.c			optional fdt rk_iodomain
+arm64/rockchip/rk_rng.c				optional fdt rk_rng
 arm64/rockchip/rk_spi.c				optional fdt rk_spi
 arm64/rockchip/rk_usb2phy.c			optional fdt rk_usb2phy soc_rockchip_rk3328 | fdt rk_usb2phy soc_rockchip_rk3399 | fdt rk_usb2phy soc_rockchip_rk3568
 arm64/rockchip/rk_typec_phy.c			optional fdt rk_typec_phy soc_rockchip_rk3399