[U-Boot-Users] [RFC/PATCH] SPI API improvements

Mike Frysinger vapier at gentoo.org
Sun May 11 23:57:10 CEST 2008


On Sunday 11 May 2008, HŒaavard Skinnemoen wrote:
> Mike Frysinger wrote:
> > On Friday 09 May 2008, Haavard Skinnemoen wrote:
> >> This patch hasn't been tested on all the boards involved, so there are
> >> probably a few issues. For now, I'd like some comments on the new
> >> interface -- if it looks good, we should spend some additional effort
> >> to validate that it doesn't introduce any breakage. I could use some
> >> help with this.
> >
> > just a quick glance, but do we care about U-Boot being a SPI slave ?  i
> > only noticed this as i was working on the Blackfin I2C driver recently
> > and realized that the I2C framework has defines for U-Boot to act as a
> > slave. not that the Blackfin driver even has any of the slave stuff
> > implemented, i just noticed it ;).
>
> I can't see much reason to add support for U-Boot acting as a SPI slave,
> and these patches certainly doesn't attempt to make that happen. If
> you're thinking of the new "struct spi_slave", that's a reference to the
> SPI slave we're talking to, i.e. whatever sits at the other end of the
> SPI bus.
>
> If someone else wants support for slave-mode SPI, maybe we should add
> it, but that should be an entirely separate set of patches.

sure sure ... i agree with you completely.  just floating the idea in case 
anyone else actually cared about it.  i certainly dont :).
-mike
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