diff --git a/arch/arm/boot/dts/r8a7790.dtsi b/arch/arm/boot/dts/r8a7790.dtsi
index 62a9086b133d5b91dce726bcb0a47ac028baaaeb..70248df023424b6d5b4088b4b6bdbc1407d110c1 100644
--- a/arch/arm/boot/dts/r8a7790.dtsi
+++ b/arch/arm/boot/dts/r8a7790.dtsi
@@ -490,6 +490,7 @@
 		dma-names = "tx", "rx";
 		reg-io-width = <4>;
 		status = "disabled";
+		max-frequency = <97500000>;
 	};
 
 	mmcif1: mmc@ee220000 {
@@ -501,6 +502,7 @@
 		dma-names = "tx", "rx";
 		reg-io-width = <4>;
 		status = "disabled";
+		max-frequency = <97500000>;
 	};
 
 	pfc: pfc@e6060000 {