Re: [PATCH 04/11] ARM: OMAP2+: usb_host_fs: add custom reset for usb_host_fs (fsusb)

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On Thu, Jun 07, 2012 at 12:51:58AM -0700, Tony Lindgren wrote:
> * Paul Walmsley <paul@xxxxxxxxx> [120607 00:44]:
> > On Thu, 7 Jun 2012, Tony Lindgren wrote:
> > 
> > > Here too I think driver like features like this should live in the
> > > driver init for omap OHCI driver. In the likely case that FS OHCI is
> > > not in use on the board, the OHCI glue can just reset it.
> > 
> > What if the driver is not compiled into the kernel, but instead is built 
> > as a loadable module?
> You can still have a core piece of the driver that's always built in, such
> as omap-ohci-common. But it should live under drivers, not in the bus level
> code. Or you can insmod/rmmod it to reset things properly.

that's such a hack... both solutions are quite hacky. The only problem
here is because some bootloaders are leaving controller in an unknown
state and I guess to be completely safe, resets should be done before
any driver kicks in.

But, driver will probably reset again the IP block during probe...


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