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[i.mx8mm] How can I allocate REF_CLK_32K to GPIO1_IO00?

Question asked by JaeHo PARK on Jun 11, 2020
Latest reply on Jun 17, 2020 by JaeHo PARK

Dear

 

I am trying to enable the 32KHz i.MX8MM 32KHz clock at GPIO1_IO00 (ALT5 : CCM_REF_CLK_32K) for a custom board. 

 

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But, I could not see any clock in this pin on Oscilloscope.

 

[Q]

- How can I allocate REF_CLK_32K to GPIO1_IO00?

- Is any additional setting needed to output 32KHz from REF_CLK_32K?

 

Thanks.

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