RE: [PATCH 2/4] USB OTG: Add driver for NXP's ISP1504 transceiver

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



> On Fri, Aug 14, 2009 at 07:58:23AM +0200, ext Daniel Mack wrote:
> > This adds a minimal driver for NXP's ISP1504 transceivers, using the OTG
> > framework functions recently introduced.
> 
> I don't really like this one that much since those registers of yours
> are defined in the ulpi-spec, right ? So this is basic the role the
> nop-xceiv was designed for.
> 
> Those ulpi-only transceivers work mostly autonomously, the main reason
> you'd need to talk to them would be for manual usb charger detection and
> stuff that are out of the ulpi spec.
> 

There would be reasons you would want to talk to them. Charger detection
is not the only reason.

> If we take this forward, so far, I see we're gonna a bunch of 
> look-alike drivers.

Different link controllers have different methods for accessing the
transceiver's registers. This series is only adding function pointers
that can be populated later depending on the controller used. I think 
it is useful to have.

- Anand--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux Media]     [Linux Input]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Old Linux USB Devel Archive]

  Powered by Linux