Set quad enable for upper flash incase of Dual stacked mode.
Signed-off-by: Siva Durga Prasad Paladugu sivadur@xilinx.com --- drivers/mtd/spi/spi_flash.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c index 293b47b..5a152db 100644 --- a/drivers/mtd/spi/spi_flash.c +++ b/drivers/mtd/spi/spi_flash.c @@ -1237,6 +1237,17 @@ int spi_flash_scan(struct spi_flash *flash) debug("SF: Fail to set QEB for %02x\n", idcode[0]); return -EINVAL; } +#ifdef CONFIG_SF_DUAL_FLASH + if (flash->dual_flash & SF_DUAL_STACKED_FLASH) { + flash->spi->flags |= SPI_XFER_U_PAGE; + if (set_quad_mode(flash, idcode[0])) { + debug("SF: Fail to set QEB Upper Flash %02x\n", + idcode[0]); + return 0; + } + flash->spi->flags &= ~SPI_XFER_U_PAGE; + } +#endif }
/* Read dummy_byte: dummy byte is determined based on the