Hi Darius ! I can confirm that your driver works on my i.MX21 device with two pca9535 chips. However, I had to add a patch to make it usable, which I'll send in a minute. Greetings, Holger -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html