diff --git a/arch/arm/dts/rk3568-rock-3b-u-boot.dtsi b/arch/arm/dts/rk3568-rock-3b-u-boot.dtsi
new file mode 100644
index 0000000..b1f3242
--- /dev/null
+++ b/arch/arm/dts/rk3568-rock-3b-u-boot.dtsi
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+#include "rk356x-u-boot.dtsi"
+
+&sdhci {
+	mmc-hs400-1_8v;
+	mmc-hs400-enhanced-strobe;
+};
+
+&sfc {
+	flash@0 {
+		bootph-pre-ram;
+		bootph-some-ram;
+	};
+};