diff --git a/arch/arm/dts/rk3588s-rock-5a-u-boot.dtsi b/arch/arm/dts/rk3588s-rock-5a-u-boot.dtsi
new file mode 100644
index 0000000..9bb0e4f
--- /dev/null
+++ b/arch/arm/dts/rk3588s-rock-5a-u-boot.dtsi
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2023 Collabora Ltd.
+ */
+
+#include "rk3588s-u-boot.dtsi"
+#include <dt-bindings/pinctrl/rockchip.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/usb/pd.h>
+
+/ {
+	aliases {
+		mmc1 = &sdmmc;
+	};
+
+	chosen {
+		u-boot,spl-boot-order = "same-as-spl", &sdmmc, &sdhci;
+	};
+};
+
+&sdmmc {
+	bus-width = <4>;
+	status = "okay";
+};
+
+&sdhci {
+	cap-mmc-highspeed;
+	mmc-ddr-1_8v;
+	mmc-hs200-1_8v;
+	pinctrl-names = "default";
+	pinctrl-0 = <&emmc_bus8 &emmc_clk &emmc_cmd &emmc_data_strobe &emmc_rstnout>;
+};
+