Re: [PATCH 3/5] ARM: davinci: da8xx: add cfgchip2 to resources

[Sergei Shtylyov]

On 03/16/2016 09:22 PM, Sergei Shtylyov wrote:

> > > > Also, I am not finding any existing data structure to pass the musb
> > > > set_mode
> > > > function to the phy in either usb_phy or usb_otg. Setting the mode
> > > > (host/peripheral/otg) is done in the same PHY register, so it seems
> > > > like it
> > > > should be implemented in the new phy driver as well.
> > >
> > >     Perhaps we'd have to sacrifice that functionality...
> >
> > The device I am working on (LEGO MINDSTORMS EV3) has the port wired as
> > peripheral only, so I don't think leaving this out is an option. Leaving it in
> > OTG mode doesn't work because the required electrical connections are just not
> > there.
>
>     The set_mode() method doesn't have anything to do with the predefined
> roles. What CFGCHIP2 setting do is to override the ID input (and also the VBUS
> level comparator). This is not required for the normal functioning of either
> host or peripheral AFAIR.

  Or at least it wasn't when I last looked. Now it does... :-/

> [...]

MBR, Sergei