diff --git a/arch/arm64/boot/dts/rockchip/rk3399-sapphire.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-sapphire.dtsi
index be92a580732b..6c30bb02210d 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-sapphire.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-sapphire.dtsi
@@ -530,7 +530,6 @@
 	max-frequency = <50000000>;
 	mmc-pwrseq = <&sdio_pwrseq>;
 	non-removable;
-	num-slots = <1>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&sdio0_bus4 &sdio0_cmd &sdio0_clk>;
 	sd-uhs-sdr104;
@@ -544,7 +543,6 @@
 	clock-frequency = <150000000>;
 	disable-wp;
 	max-frequency = <150000000>;
-	num-slots = <1>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&sdmmc_clk &sdmmc_cmd &sdmmc_cd &sdmmc_bus4>;
 	vqmmc-supply = <&vcc_sdio>;