[PATCH] spi: prevent overriding established bus settings

[Marcin Wojtas]

niedz., 26 sty 2020 o 14:30 Jagan Teki <jagan at amarulasolutions.com> napisał(a):
>
> On Thu, Nov 21, 2019 at 10:09 AM Marcin Wojtas <mw at semihalf.com> wrote:
> >
> > The SPI stack relies on a proper bus speed/mode configuration
> > by calling dm_spi_claim_bus(). However the hitherto code
> > allowed to accidentally override those settings in
> > the spi_get_bus_and_cs() routine.
> >
> > The initially established speed could be discarded by using
> > the slave platdata, which turned out to be an issue on
> > the platforms whose slave maximum supported frequency
> > is not on par with the maximum frequency of the bus controller.
> >
> > This patch fixes above issue by configuring the bus from
> > spi_get_bus_and_cs() only in case it was not done before.
> >
> > Signed-off-by: Marcin Wojtas <mw at semihalf.com>
> > ---
>
> Applied to u-boot-spi/master

Great, thanks!
Marcin