diff --git a/arch/arm64/boot/dts/rockchip/px30-evb-ddr3-v10-avb.dts b/arch/arm64/boot/dts/rockchip/px30-evb-ddr3-v10-avb.dts
index 7b122c5461f8..fd9b6a2a5386 100644
--- a/arch/arm64/boot/dts/rockchip/px30-evb-ddr3-v10-avb.dts
+++ b/arch/arm64/boot/dts/rockchip/px30-evb-ddr3-v10-avb.dts
@@ -13,10 +13,6 @@
 	compatible = "rockchip,px30-evb-ddr3-v10-avb", "rockchip,px30";
 };
 
-&chosen {
-	bootargs_ext = "androidboot.boot_devices=ff390000.dwmmc,ff3b0000.nandc";
-};
-
 &dsi {
 	status = "okay";
 
diff --git a/arch/arm64/boot/dts/rockchip/rk3326-863-lp3-v10-rkisp1.dts b/arch/arm64/boot/dts/rockchip/rk3326-863-lp3-v10-rkisp1.dts
index d80dad694c1d..2d0fa8a8e6cc 100644
--- a/arch/arm64/boot/dts/rockchip/rk3326-863-lp3-v10-rkisp1.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3326-863-lp3-v10-rkisp1.dts
@@ -11,10 +11,6 @@
 	compatible = "rockchip,rk3326-863-lp3-v10-rkisp1", "rockchip,rk3326";
 };
 
-&chosen {
-	bootargs_ext = "androidboot.boot_devices=ff390000.dwmmc,ff3b0000.nandc";
-};
-
 &i2c2 {
 	status = "okay";