> Hi Kishon, > > I've been debugging why some devices do not work with the musb otg > controller found on Allwinner SoC-s, and the conclusion is not good, the > Android kernel does a poke to the phy before releasing the usb reset. > > Now you did not want me to introduce any sunxi specific / private phy > functions in my initial patch-series for adding sunxi support, but in this > case I do > not really see an alternative, as this is a very platform specific hack to > work > around an issue with the phy-s squelch detection which causes it to see a > squelch when reset is released switching it to high speed mode when a lo > speed device is connected, after which things fall apart. >
The nofity_connect API at struct usb_phy may satisfy your requirement, it will be called after bus rest has finished. Peter
