24 Jan
2012
24 Jan
'12
9:40 a.m.
On 14/01/2012 13:25, Matthias Fuchs 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.fuchs@esd.eu
Applied to u-boot-imx, thanks.
Best regards, Stefano Babic
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