diff --git a/target/linux/rockchip/image/legacy/rk3568.bootscript b/target/linux/rockchip/image/legacy/rk3568.bootscript
index d54b841868..761a1699ee 100644
--- a/target/linux/rockchip/image/legacy/rk3568.bootscript
+++ b/target/linux/rockchip/image/legacy/rk3568.bootscript
@@ -1,9 +1,12 @@
+if test -z "${devtype}"; then
+	setenv devtype mmc
+fi
 
-part uuid mmc ${devnum}:2 uuid
+part uuid ${devtype} ${devnum}:2 uuid
 
 setenv bootargs "console=ttyS2,1500000 earlycon=uart8250,mmio32,0xfe660000 root=PARTUUID=${uuid} rw rootwait"
 
-load mmc ${devnum}:1 ${fdt_addr_r} rockchip.dtb
-load mmc ${devnum}:1 ${kernel_addr_r} kernel.img
+load ${devtype} ${devnum}:1 ${fdt_addr_r} rockchip.dtb
+load ${devtype} ${devnum}:1 ${kernel_addr_r} kernel.img
 
 booti ${kernel_addr_r} - ${fdt_addr_r}
diff --git a/target/linux/rockchip/image/legacy/rk3588.bootscript b/target/linux/rockchip/image/legacy/rk3588.bootscript
index d876356d09..750418d87f 100644
--- a/target/linux/rockchip/image/legacy/rk3588.bootscript
+++ b/target/linux/rockchip/image/legacy/rk3588.bootscript
@@ -1,9 +1,12 @@
+if test -z "${devtype}"; then
+	setenv devtype mmc
+fi
 
-part uuid mmc ${devnum}:2 uuid
+part uuid ${devtype} ${devnum}:2 uuid
 
 setenv bootargs "console=ttyS2,1500000 earlycon=uart8250,mmio32,0xfeb50000 root=PARTUUID=${uuid} rw rootwait"
 
-load mmc ${devnum}:1 ${fdt_addr_r} rockchip.dtb
-load mmc ${devnum}:1 ${kernel_addr_r} kernel.img
+load ${devtype} ${devnum}:1 ${fdt_addr_r} rockchip.dtb
+load ${devtype} ${devnum}:1 ${kernel_addr_r} kernel.img
 
 booti ${kernel_addr_r} - ${fdt_addr_r}