We areusing the TUSB8041 as a hub device.
I'm able to see the hub device from the upstream CPU, but none of the downstream devices are up. The port power control is happening independently of the TUSB8041, and the ports have power.
Here is the relevant schematic section (the _NP suffix implies that the part is not populated):
To give a bit more information, we are initializing the device via the SMbus interface. Here are the register writes we are performing to initialize the device:
0x00 => 0x06 (disable battery charging support)
0x8f => 0x07 (all devices removable)
0x0f => 0x08 (all ports enabled)
0x01 => 0xf8 (enable)
The SMbus transactions are executed successfully (ACKs where appropriate, and the device becomes visible on the upstream bus after the last command).
Please let me know how you suggest we move forward on this. Thank you.
