On 5.11.2021 19.32, Walt Jr. Brake wrote:
On 6/11/2021 00:09, Mathias Nyman wrote:
quoted
On 5.11.2021 18.00, Mathias Nyman wrote:
quoted
Some USB 3.1 enumeration issues were reported after the hub driver removed
the minimum 100ms limit for the power-on-good delay.
Since commit 90d28fb53d4a ("usb: core: reduce power-on-good delay time of
root hub") the hub driver sets the power-on-delay based on the
bPwrOn2PwrGood value in the hub descriptor.
xhci driver has a 20ms bPwrOn2PwrGood value for both roothubs based
on xhci spec section 5.4.8, but it's clearly not enough for the
USB 3.1 devices, causing enumeration issues.
Tests indicate full 100ms delay is needed.
Reported-by: Walt Jr. Brake <redacted>
Signed-off-by: Mathias Nyman <redacted>
Walt Jr Brake, just to be sure could you test this one as well?
As Alan suggested this sets 100ms for the USB 3 roothub but
keeps the 20ms for the USB 2 roothub.
Thanks
-Mathias
Yes I tested, it works too.
Thank you
-Mathias