[spi-devel-general] [PATCH] SST25L (non JEDEC) SPI Flash driver
Ryan Mallon
ryan at bluewatersys.com
Mon Jun 22 00:25:36 EDT 2009
Baruch Siach wrote:
> Hi Ryan,
>
> On Mon, Jun 22, 2009 at 03:58:51PM +1200, Ryan Mallon wrote:
>> +static int sst25l_erase_block(struct sst25l_flash *flash, u32 offset)
>> +{
>> + u8 command[4];
>> + int err;
>> +
>> + err = sst25l_write_enable(flash, 1);
>
> Is this enable/disable strictly required for each write/erase? Can't we just
> enable write once?
The datasheet says that prior to any write/erase instruction the write
enable instruction must be sent.
~Ryan
--
Bluewater Systems Ltd - ARM Technology Solution Centre
Ryan Mallon Unit 5, Amuri Park
Phone: +64 3 3779127 404 Barbadoes St
Fax: +64 3 3779135 PO Box 13 889
Email: ryan at bluewatersys.com Christchurch, 8013
Web: http://www.bluewatersys.com New Zealand
Freecall Australia 1800 148 751 USA 1800 261 2934
More information about the linux-mtd
mailing list