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USB downstream of USB hub did not work when test with i.MX6DQ port test control.

Question asked by Satoshi Shimoda on Dec 3, 2014
Latest reply on Mar 19, 2015 by Satoshi Shimoda

Hi community,

 

Our partner have a question about i.MX6DQ USB compliance test.

They executed the test with USBC_n_PORTSC1 register setting, but the downstream of USB hub did not work well with the following connection even though it worked well without USB hub.

i.MX6Q -> USB Hub -> USB device

 

[Question]

Would you let me know why the downstream of USB hub did not work?

 

 

Best Regards,

Satoshi Shimoda

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