Re: [PATCH v2 3/5] usb: musb: Add support of CPPI 4.1 DMA controller to DA8xx

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* Alexandre Bailon <abailon@xxxxxxxxxxxx> [170117 09:07]:
> On 01/17/2017 05:40 PM, Tony Lindgren wrote:
> > * Alexandre Bailon <abailon@xxxxxxxxxxxx> [170117 08:31]:
> >> On 01/17/2017 05:26 PM, Tony Lindgren wrote:
> >>> * Alexandre Bailon <abailon@xxxxxxxxxxxx> [170117 06:36]:
> >>>> Currently, only the PIO mode is supported.
> >>>> This add support of CPPI 4.1 to DA8xx.
> >>>> As the In DA8xx the CPPI 4.1 DMA is a part of the USB.
> >>>> Create the CPPI 4.1 device as a child of USB.
> >>>
> >>> Are you sure there's always just one musb instance on these SoCs?
> >> To be honest, I only haven't check for all the SoCs.
> >>>
> >>> If you have more than one musb instance, chances are you have an
> >>> additional shared wrapper IP around them just like am335x/dm814x/dm816x
> >>> have.
> >> Ok. I will check for the SoCs to see if that is required.
> > 
> > OK that might avoid big headaches later on if more musb instances
> > are found on some variants.
> I have checked for the AM1705, AM1707, AM1802, AM1806, AM1808, AM1810,
> OMAPL132, OMAPL137 and OMAPL138. They don't have more than one
> USB OTG instance.
> Anyway, if you prefer that I do the shared wrapper IP, I may do it.

Thanks for checking. If you only have one instance, the current solution
seems OK to me. You already have a wrapper driver there :)

Tony

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