Boards that support secure GPIO for OP-TEE

Products Support
#1

Hi all,
I’m working on some projects which need configuring the GPIO into the secure world (OP-TEE). That means some GPIO pins can only be accessed from the secure world but the others can be used in the normal world as usual. Then the trusted apps (TAs) in OP-TEE can access those secure GPIO pins.
I’m not familiar with the hardware topics so need some help. My questions are:

  1. Is there a recommended board for me to purchase?
  2. Is there some tutorials or guidance for configuring the secure GPIO on OP-TEE of that recommended board?

Thanks so much!