IO READ protocols transfers both address and data on multiple data bits. 1-2-2(DUAL IO), 1-4-4(QUAD IO) transfer address on 2 data bits or 4 bits per rising edge of SCK respectively.
This patch update spi_nor_flash_parameter->spi_nor_read_command array based on DUAL or QUAD IO flag enabled in flash_info for a flash.
Signed-off-by: Prabhakar Kushwaha prabhakar.kushwaha@nxp.com --- Changes for v2: none
drivers/mtd/spi/spi_flash.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c index 51e28bf..4ff8d8b 100644 --- a/drivers/mtd/spi/spi_flash.c +++ b/drivers/mtd/spi/spi_flash.c @@ -1071,8 +1071,12 @@ int spi_flash_scan(struct spi_flash *flash) flash->read_cmd = CMD_READ_ARRAY_FAST; if (spi->mode & SPI_RX_SLOW) flash->read_cmd = CMD_READ_ARRAY_SLOW; + else if (spi->mode & SPI_RX_QUAD && info->flags & RD_QUADIO) + flash->read_cmd = CMD_READ_QUAD_IO_FAST; else if (spi->mode & SPI_RX_QUAD && info->flags & RD_QUAD) flash->read_cmd = CMD_READ_QUAD_OUTPUT_FAST; + else if (spi->mode & SPI_RX_DUAL && info->flags & RD_DUALIO) + flash->read_cmd = CMD_READ_DUAL_IO_FAST; else if (spi->mode & SPI_RX_DUAL && info->flags & RD_DUAL) flash->read_cmd = CMD_READ_DUAL_OUTPUT_FAST;