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i.MX7D USB HSIC port init

Question asked by Thomas Schäfer on Jun 6, 2017
Latest reply on Jun 30, 2017 by gusarambula
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Hi all,

 

I want to initialize USB HSIC port on our i.MX7D custom board. I managed to enable the LDO_1P2 power by setting bit 0 of the Anadig 1.2V HSIC Regulator Control Register.

 

However, I cannot find a way to enable the SW_HSIC_1P0 power switch for the USB HSOC 1.0V power supply as stated in 5.1.4.5.4 of the reference manual.

 

Which registers will I have to control to enable that power switch?

 

Trying to set the PP bit in the Port Status and Control register to enable port power causes u-boot to hang.

 

Best regards,

Thomas

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