diff options
| author | Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com> | 2014-12-12 19:36:14 +0530 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2014-12-13 15:08:04 -0700 |
| commit | 54ba653ab63b31c8f5405fb0ee9dfba05cbb1521 (patch) | |
| tree | f25ee08062a2b629296e8bb19ae0461dc7493c76 /drivers/mtd/spi/sf_probe.c | |
| parent | 74c2cee4e82bb71953267e87900e279ab5aa1dc3 (diff) | |
sf: Enable byte program support
Enabled byte program support for sst flashes in sf.
Few controllers will only support BP, so this patch gives
a tx transfer flag to set the BP so-that sf will operate
on byte program transfer.
A new TX operation mode SPI_OPM_TX_BP is introduced for such SPI
controller to use byte program op for SST flash.
Signed-off-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'drivers/mtd/spi/sf_probe.c')
| -rw-r--r-- | drivers/mtd/spi/sf_probe.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/mtd/spi/sf_probe.c b/drivers/mtd/spi/sf_probe.c index 7cde4c052ab..ce9987fd1a8 100644 --- a/drivers/mtd/spi/sf_probe.c +++ b/drivers/mtd/spi/sf_probe.c @@ -136,8 +136,12 @@ static int spi_flash_validate_params(struct spi_slave *spi, u8 *idcode, #ifndef CONFIG_DM_SPI_FLASH flash->write = spi_flash_cmd_write_ops; #if defined(CONFIG_SPI_FLASH_SST) - if (params->flags & SST_WP) - flash->write = sst_write_wp; + if (params->flags & SST_WR) { + if (flash->spi->op_mode_tx & SPI_OPM_TX_BP) + flash->write = sst_write_bp; + else + flash->write = sst_write_wp; + } #endif flash->erase = spi_flash_cmd_erase_ops; flash->read = spi_flash_cmd_read_ops; |