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IMX6ULL GPIO device tree customization

Question asked by Vasudhevan G on Oct 14, 2019
Latest reply on Oct 14, 2019 by igorpadykov

I referred many community links not fully understood.

I checked with sd card detect pin it's working fine.

  1. It's compulsory uboot device tree also needs to modify ? 
  2. Both uboot and kernel device tree should be same ?
  3. Can i get example kernel device tree structure for gpio and input button customization ?
  4. How this customization imx gpio device driver knows and how its working ?