Dave,
There are other peripherals such as EMAC (on other platforms not in the
community tree) that use this version of CPPI. I am not aware whether TI would
want to support those platforms through a community tree.
In the context of OMAP-L137/DA830 type of devices USB is the only
peripheral that would use this version of the controller.
Regards
swami
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf
> Of David Brownell
> Sent: Friday, March 20, 2009 2:25 PM
> To: [email protected]
> Cc: [email protected]
> Subject: Re: [PATCH] DaVinci: add support for CPPI 4.1
>
> On Wednesday 18 March 2009, Sergei Shtylyov wrote:
> > Add support for Texas Instuments Communication Port Programming
> Interface 4.1
> > (CPPI 4.1) used on OMAP-L137/DA830.
> >
> > At this moment, only the DMA controller and queue manager are supported.
> > Support for the buffer manager is lacking but this chip doesn't have it
> anyway.
>
> Is this usable for anything other than the musb_hdrc driver?
>
> ISTR the Ethernet controller uses some flavor of CPPI too.
> But CPPI wasn't "broken by design" in that context, like it
> was for USB RX, so they may not have changed it there.
>
> If this is only for the MUSB driver, it might be better to
> stash this code in driver/usb/musb and generalize the
> current CPPI glue there.
>
>
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