Commits
Geert Uytterhoeven committed b458a3490e4
spi: rspi: Do not set SPCR_SPE in qspi_set_config_register()
The R-Car Gen2 Hardware User Manual Rev. 2.00 states:
If the master/slave mode select bit (MSTR) is modified while the SPI
function enable bit (SPE) is set to 1 (that is, this module is
enabled), the subsequent operation cannot be guaranteed.
Hence do not set SPCR_SPE when setting SPCR_MSTR, just like the
.set_config_register() implementations for other RSPI variants do.
Note that when booted from QSPI, the boot loader will have set SPCR_MSTR
already, hence usually the bit is never modified by the Linux driver.
Reported-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mark Brown <broonie@kernel.org>