We customized the carry board of Jetson nano and found an issue with USB 3.0 hub, VDD_USB_VBUSTYPEA
is not on through U21 load switch, since the EN of load switch is controlled from RTS5411 root hub (DSP1_PWR
I’m wondering what could be the possible reason that makes that the DSP1_PWR not on when the system is powered on.
As I know that by default RTS5411 is active low, in Jetson Nano’s case, it seems it’s configured as active_high, but the SPI port is not connected, is it configured through I2C?
Could it be some issue with the I2C route design that makes the configuration failed?
Thanks a head.