By comparing the gpio.c generated by autoport on a t430s that have a TB and the gpio.c in coreboot's tree, I fount that gpio27 is set as GPIO-INPUT on devices that have a TB, while it is set as GPIO-OUTPUT-HIGH on the gpio.c in coreboot's tree (it might reflex the config of devices that do not have a TB).

Is gpio27 the detection gpio for TB we are looking for? And if it is, what should be done to the code in the next step?

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