On Tue, Oct 11, 2016 at 2:57 AM, George McCollister george.mccollister@gmail.com wrote:
Many SPI NOR flash devices support status register protection through one or two status register protection bits. Status register protection enables protection of block protect and other bits from manipulation.
So far, four different status register protection methods have been observed:
Software - Writes to the status register are blocked until a write enable bit is set by software. Hardware - Writes to the status register are blocked while a pin is in a certain state. Power - Writes to the status register are blocked until the next power-down. One Time Program - Writes to the status register are permanently blocked.
Signed-off-by: George McCollister george.mccollister@gmail.com
include/spi_flash.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)
Reviewed-by: Bin Meng bmeng.cn@gmail.com