Hi Marek,
Hi,
sorry for the really late reply.
Does it also work if you 'setenv usb_pgood_delay 2000' ?
No, the USB stick is still not initialized.
Can you include the 5ms patch ?
I've attached the patch which makes it work. Of course, I'm not sure if this is
the correct way to fix the problem. You can apply the patch on the master branch.
Does this delay have to be added to every control message (unlikely) or to some specific control message (likely) ?
The delay is necessary, at least for the requests of type: - USB_REQ_GET_STATUS (for the communication with the root) - USB_REQ_GET_DESCRIPTOR (for the communication with the device)
I added the delay one by one to each message type and without the delay for these two, it fails as I described. I created the patch which adds delay for all the messages since its simpler and it doesn’t seem to affect the performance.
Could you try and use the debug() statement in xhci_submit_control_msg() , as well as move the mdelay(5) there , to find out which exact control message requires this extra delay ? I also suspect this may not really be related to a specific control message, but instead some early part of initialization .