diff --git a/arch/arm/boot/dts/overlays/README b/arch/arm/boot/dts/overlays/README
index 6cf82c17975d5b..d24443c3952f7d 100644
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -2404,6 +2404,9 @@ Params: addr                    Set the address for the ADT7410, BH1750, BME280,
         si7020                  Select the Silicon Labs Si7013/20/21 humidity/
                                 temperature sensor
 
+        si7210                  Select the Silicon Labs Si7210 Hall effect
+                                sensor. Valid addresses 0x30-0x33, default 0x30
+
         sps30                   Select the Sensirion SPS30 particulate matter
                                 sensor. Fixed address 0x69.