diff --git a/arch/arm/boot/dts/imx6sx.dtsi b/arch/arm/boot/dts/imx6sx.dtsi
index 64608e2299f1..a74ae8d60c60 100644
--- a/arch/arm/boot/dts/imx6sx.dtsi
+++ b/arch/arm/boot/dts/imx6sx.dtsi
@@ -1161,6 +1161,8 @@
 				interrupts = <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>;
 				clocks = <&clks IMX6SX_CLK_IPG>;
 				clock-names = "adc";
+				fsl,adck-max-frequency = <30000000>, <40000000>,
+							 <20000000>;
 				status = "disabled";
                         };
 
@@ -1170,6 +1172,8 @@
 				interrupts = <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>;
 				clocks = <&clks IMX6SX_CLK_IPG>;
 				clock-names = "adc";
+				fsl,adck-max-frequency = <30000000>, <40000000>,
+							 <20000000>;
 				status = "disabled";
                         };