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How to turn on device by gpio in kernel space?

Question asked by Thinh Nguyen on Feb 21, 2018
Latest reply on Feb 23, 2018 by Jas Math

I connected a GPS module to i.MX6 as the picture below. The power of gps module is controlled by a gpio of i.MX6. My question is "How to power on gps module in kernel space by pulling down i.MX6 gpio?" Which driver should i used? Please advise!