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GPIO on LS1021a-TWR

Question asked by Alex Bikhdriker on Aug 12, 2015
Latest reply on Sep 24, 2015 by ufedor

We would like to use GPIO of LS1021a. We have Freescale board LS1021a-TWR.

We tried to operate few pins of GPIO3 port by modification of RCW in u-boot. In spite modification external signals are not affected by PDAT register value and not all the bits of PDAT can be set high.

 

Then, this is the question: What GPIOs we can use without affecting basic LS1021a-TWR functionality like Linux shell over UART, networking and PCIe.

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