On Thu, 2015-02-19 at 19:12 +0100, Sylvain Rochet wrote: > Or use a 1-wire or I2C EEPROM to store your board information. no, you don't reduce the human error probability. eeprom needs to be preprogrammed, factory will at some point have a lot of eeprom with different version, and will potentially equip the wrong one. much more error prone than them putting the resistor at the wrong place. > Or, even better, if you have an I2C device, just chose a different > address on each board for this device and then probe I2C devices in your > boot loader until you found one you are looking for, this way, you don't > need spare GPIO at all. You don't even need to populate the same I2C > device on all boards, you can actually probe anything. I'm not a fan of schemes where not probing something is not a definitive sign of hardware failure. -- Maxime -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
