Marek Vasut [mailto:marex@denx.de]
Sent: Tuesday, June 02, 2020 7:59 PM
[...]
Can you be more specific about the problem you are fixing here ? What is the problem ?
There is low probability that the device may be lost when rebooting. Should I submit v2 to reword the commit message?
Lost how ?
USB enumeration may fail. The device would be at wrong state. I don't know detail about the hardware behavior.
Is there any chance you can ask someone ? It would be real helpful to know the details of the problem, in case someone runs into it, they would know what is going on.
I get the following information.
1. Our device has auto-installed driver feature - via switch CD-ROM/NIC mode. But in some corner cases, it would switch to CD-ROM unexpected. This issue results in Lan Function Disabled.
2. While USB PHY transits to P3 from P0 due to the absent of transmitter control, it would issues undefined signal to its’ link partner. Some Down Stream Port misidentify the undefined signal as wakeup signal. So the link state will not keep in suspend even the system is idle.
Best Regards, Hayes