[U-Boot] [PATCH v2] ppc4xx: Add CATCenter Io 405EP board support
Stefan Roese
sr at denx.de
Wed Oct 13 14:32:48 CEST 2010
Hi Dirk,
On Wednesday 13 October 2010 14:19:19 Eibach, Dirk wrote:
> > Why not use the already available GPIO functions instead
> > (gpio_write_bit() etc)? This will make it easier to move this
> > to the common (Linux) GPIO API at some time later.
>
> Hmm, nice, didn't notice those yet.
> But somehow functionality is missing for toggling between output and
> tristate mode without changing output value.
> In linux we have gpio_direction_input() and gpio_direction_output() for
> this purpose.
>
> Should I add something like this to ppc4xx-gpio.h?
Best would be to move to the Linux GPIO API for PPC4xx in U-Boot now then.
This has been discussed before on the list. And is on my list of open tasks.
But it will have to wait a few more weeks I'm afraid. Perhaps you have some
spare cycles left to migrate the current GPIO API to the Linux one? See
Blackfin arch as an example.
Cheers,
Stefan
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: office at denx.de
More information about the U-Boot
mailing list