diff --git a/arch/arm/boot/dts/sun8i-h2-plus-bananapi-m2-zero.dts b/arch/arm/boot/dts/sun8i-h2-plus-bananapi-m2-zero.dts
index f8a7b1371e97..f3f7a2c912ab 100644
--- a/arch/arm/boot/dts/sun8i-h2-plus-bananapi-m2-zero.dts
+++ b/arch/arm/boot/dts/sun8i-h2-plus-bananapi-m2-zero.dts
@@ -154,6 +154,7 @@ &uart1 {
 
 	bluetooth {
 		compatible = "brcm,bcm43438-bt";
+		max-speed = <1500000>;
 		clocks = <&rtc 1>;
 		clock-names = "lpo";
 		vbat-supply = <&reg_vcc3v3>;