diff --git a/tool/dump-i2c.sh b/tool/dump-i2c.sh
new file mode 100755
index 0000000..41052f2
--- /dev/null
+++ b/tool/dump-i2c.sh
@@ -0,0 +1,36 @@
+#!/bin/sh -eu
+
+if ! lsmod | grep i2c_dev &>/dev/null; then
+	echo "kernel module i2c-dev must be loaded"
+	exit
+fi
+
+if ! command -v i2cdump &>/dev/null; then
+	echo "i2cdump from i2c-tools must be installed"
+	exit
+fi
+
+
+for connector in $(find /sys/class/drm/ -maxdepth 1 -name 'card[0-9]-*'); do
+	bus=$(find "$connector/" -maxdepth 1 -mindepth 1 -type d -name 'i2c-*' -print -quit | sed -n 's/.*\/i2c\-\(.*\)/\1/p')
+	if [ "$bus" = "" ]; then
+		bus=$(find "$connector/ddc/i2c-dev/" -maxdepth 1 -mindepth 1 -type d -name 'i2c-*' -print -quit | sed -n 's/.*\/i2c\-\(.*\)/\1/p')
+	fi
+	if [ "$bus" = "" ]; then
+		echo "Connector $(basename $connector) does not have an i2c bus. Skipping."
+		continue
+	fi
+
+	echo "Dumping connector $(basename $connector) i2c bus address 0x50"
+	i2cdump -y $bus 0x50 b
+
+	echo "Dumping connector $(basename $connector) i2c bus address 0x51"
+	i2cdump -y $bus 0x51 b
+
+	echo "Dumping connector $(basename $connector) i2c bus address 0x54"
+	i2cdump -y $bus 0x54 b
+
+	echo "Dumping connector $(basename $connector) i2c bus address 0x55"
+	i2cdump -y $bus 0x55 b
+done
+