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DM6446 MUSB can not detect devices issue

Tomas zheng
Intellectual 270 points

Hi Experts,

I am using Dm6446 on mvl401( linux 2.6.10), when the image up, the MUSB Host can not detect any usb devcies.

I checked the debug message, just found that there even is no connection interrupt.

we add one workaround to force the host controller to route to ' A device' by set HOSTREQ bit in DEVCTL register in musb_start routine,

the connection interrupt coming, and can detect the plugged devcies. But the issue is when the usb device plugged out, host controller

can not detect the disconnection (_no_ disconnection interrupt), the controller gose to the suspend stage. I checked the vbus, the stage is ok too.

I search the community and the davinci maillist, no found such issue as mine.

I do not know it is my hardware issue or something else?

Any suggestions will be very appreciated!

Thanks very much and Merry Christmas,

Tomas