diff options
| author | Jagannadha Sutradharudu Teki <jaganna@xilinx.com> | 2013-09-26 13:16:45 +0530 |
|---|---|---|
| committer | Jagannadha Sutradharudu Teki <jaganna@xilinx.com> | 2013-10-07 17:55:44 +0530 |
| commit | 54024c15668ec5e8c261536e9bbc9d22dd01f3e6 (patch) | |
| tree | 7a1724f79b20b1487c3c74b14d8655be77ce6084 /drivers | |
| parent | 10ca45d005a96e810b5a225b08135fc24da62ee9 (diff) | |
sf: probe: Add support to clear flash BP# bits
Few of the flashes(Atmel, Macronix and SST) require to
clear BP# bits in flash power ups.
So clear these BP# bits at probe time, so-that the flash
is ready for user operations.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/spi/spi_flash_probe.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/mtd/spi/spi_flash_probe.c b/drivers/mtd/spi/spi_flash_probe.c index 199eab89b0..46591343d2 100644 --- a/drivers/mtd/spi/spi_flash_probe.c +++ b/drivers/mtd/spi/spi_flash_probe.c @@ -203,6 +203,13 @@ struct spi_flash *spi_flash_validate_ids(struct spi_slave *spi, u8 *idcode) flash->sector_size = params->sector_size; flash->size = flash->sector_size * params->nr_sectors; + /* Flash powers up read-only, so clear BP# bits */ +#if defined(CONFIG_SPI_FLASH_ATMEL) || \ + defined(CONFIG_SPI_FLASH_MACRONIX) || \ + defined(CONFIG_SPI_FLASH_SST) + spi_flash_cmd_write_status(flash, 0); +#endif + return flash; } |