[U-Boot] [PATCH] spi: omap3: fix claim/release bus within DM

[Jagan Teki]

On Tue, Jun 26, 2018 at 7:38 PM, Hannes Schmelzer <oe5hpm at oevsv.at> wrote:
> The claim/release bus function must not reset the whole SPI core because
> settings regarding wordlen, clock-frequency and so on made by
> set_wordlen, set_mode, set_speed get lost with this action. Resulting in
> a non-functional SPI.
>
> Without DM the failure didn't came up since after the spi_reset within
> claim bus all the setup (wordlen, mode, ...) was called, in DM they are
> called by the spi uclass.
>
> We change now the things as following for having a working SPI instance
> in DM:
>
> - move the spi_reset(...) to the probe call in DM for having a known
> hardware state after probe. Without DM we don't have a probe call, so we
> issue the reset as before during the claim_bus call.
>
> - in release bus we just reset the modulctrl to the reset-value (spi-
> slave)
>
> Signed-off-by: Hannes Schmelzer <oe5hpm at oevsv.at>
>
> ---

Applied to u-boot-spi/master