On 1/14/12, Matthias Fuchs <matthias.fu...@esd.eu> wrote: > The generic spi flash driver (drivers/mtd/spi/spi_flash.c) uses the > spi low level driver's spi_xfer() function with len=0 to deassert the > SPI flash' chip select. But the i.MX28 spi driver rejects this call > due to len=0. > > This patch implements an exception for len=0 with the SPI_XFER_END > flag set. This results in an extra read with the chip select being > deasserted afterwards. There seems to be no way to deassert the signal > by hand. > > Signed-off-by: Matthias Fuchs <matthias.fu...@esd.eu>
Tested-by: Fabio Estevam <fabio.este...@freescale.com> Soldered a SST25VF016B on a mx28evk (and also the SPI pullups) and verified that the flash can be erased succesfully now. I suggest that this patch gets applied as it fixes a real issue. Thanks, Fabio Estevam _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
