[PATCH] Simple driver for Xilinx SPI controler.

[Grant Likely]

On 6/6/07, Stephen Neuendorffer <stephen.neuendorffer at xilinx.com> wrote:
>
> Yes, except that microblazes systems run in non-virtex FPGAs...
>
> It may be that XILINX_EDK is not the right thing either, but it
> seemed like the easiest way to have a superset of powerpc and microblaze
> systems
>
> What I'm trying to do is (in concert with Grant's recent configuration
> changes)
> having an easy way for a new board configuration to select the Kconfig
> options for
> all of the Xilinx drivers.  Namely:
>
> config XILINX_ML300
>         bool "Xilinx-ML300"
>         select XILINX_VIRTEX_II_PRO
>         select EMBEDDEDBOOT
>         help
>           This option enables support for the Xilinx ML300 evaluation
> board.
>
> config XILINX_VIRTEX_II_PRO
>         bool
>         select XILINX_VIRTEX
>
> config XILINX_EDK
>         bool
>         depends on XILINX_VIRTEX || XILINX_MICROBLAZE
>         default y

I don't have any problem with adding XILINX_EDK (or whatever), but
think particular layout is back-assward.  Rather than XILINX_EDK
depending on XILINX_VIRTEX/MICROBLAZE, XILINX_VIRTEX/MICROBLAZE should
'select' XILINX_EDK and you need to drop the 'default y' line.
Otherwise the XILINX_EDK option shows up in non-edk config files.

>
> config XILINX_GPIO
>         tristate "Xilinx OPB GPIO Support"
>         depends on XILINX_EDK
>         help
>         This option enables support for Xilinx GPIO.
>
>
> It seems like I'm using XILINX_EDK to mean something different than you
> are.
> Perhaps it sould be instead:
>
> config XILINX_DRIVERS
>         bool
>         depends on XILINX_VIRTEX || XILINX_MICROBLAZE
>         default y

Hmmm, yes.  XILINX_DRIVERS is probably better.

>
> config XILINX_GPIO_EDK
>         tristate "Xilinx EDK-based OPB GPIO Support"
>         depends on XILINX_DRIVERS
>         select XILINX_EDK
>         help
>         This option enables support for Xilinx GPIO using EDK OS
> independent driver.

Why still have XILINX_EDK?  I thought you meant replace XILINX_EDK
with XILINX_DRIVERS.

Cheers,
g.

-- 
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
grant.likely at secretlab.ca
(403) 399-0195