Hi, Felipe Balbi <balbi@xxxxxx> writes: > Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> writes: >> Hello, >> >> This is a resurrection of the patches initially submitted by Ruslan >> Bilovol in the following thread: https://lkml.org/lkml/2015/6/22/554 >> >> The changes since the original submission (v5) includes rebase onto >> latest linux-next branch, simplification of the code requested by Alan >> Stern and Felipe Balbi, removal of a patch, which deleted __init/__exit >> attributes (this change has been already merged) and fixes of the >> checkpatch issues. >> >> This feature is urgently needed, because it is not longer possible to >> use workaround to avoid deferred probe in UDC drivers due to >> not-yet-probed i2c regulator drivers (for more information see >> https://lkml.org/lkml/2015/10/30/374 ). >> >> This patchset has been successfully tested on Odroid XU3 boards with >> DWC3 UDC driver being deferred by missing regulator drivers. > > there is one problem with this patchset. If I try to statically link > gadget drivers, only one can be chosen, even though I can enable both > dwc3 and dummy_hcd just fine. And, actually, this brings another > problem. How do we handle systems which have 2 USB peripheral > controllers (say, 2 instances of dwc3) and choose which gadget driver > will bind to which controller ? We also seem to have issues with Kconfig. If I try to make gadget driver built-in, when compiling I'll get asked again if I want gadget drivers built-in. Another one: I just tried dummy_hcd built-in, g_zero built-in, dwc3 as a module. I can never load anything to dwc3 ;-) -- balbi
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