IMX8MM : Replace PCIE1_CLKREQ_B by a gpio

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IMX8MM : Replace PCIE1_CLKREQ_B by a gpio

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guerinyoann
Contributor I

Hi,

We develop a board based on IMX8MM.

Your card IMX8MM EVK use PCIE1_CLKREQ_B.

But, we can not use this signal (pinmux limitation).

Is is possible to use a gpio?

Yoann

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igorpadykov
NXP Employee
NXP Employee

Hi Yoann

seems not as this signal is controlled by PCIe module according to

description on https://pcisig.com/making-most-pcie%C2%AE-low-power-features 

Best regards
igor
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