SPL SPI boot problem after commit "spi: Update speed/mode on change"

[Marek Vasut]

On 8/22/21 9:41 AM, Oskari Lemmelä wrote:
> Hi Marek,
> 
> I was bisecting SPI flash boot problem in rockpro64 board and commit 
> e2e95e5e25421fb seems to broke it.
> 
> It seems that after speed and mode change SPL is unable to load BL31 
> anymore from SPI flash device.
> There is no errors it just hangs forever.
> 
> If I change default mode to 0 (CONFIG_SF_DEFAULT_MODE=0), loading BL31 
> seems to work. In that case spi_set_speed_mode is also called but only 
> speed is changed from 1Mhz to 10Mhz.
> 
> So changing mode from 0 to 3 in SPL stage seems to be the problem.
> 
> Any idea what could be the problem?

See 8c6d8c3219 ("configs: libretech: set SPI mode to 0")