Messages in this thread | | | From | Marek Vasut <> | Subject | Re: [PATCH 3/3] MTD: spi-nor: add flag to not use sector erase. | Date | Fri, 1 May 2015 01:13:50 +0200 |
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On Thursday, April 30, 2015 at 11:13:12 PM, Michal Suchanek wrote: > The sector size of the flash memory is unclear from datasheet or may > possibly vary between chips so add a flag to always use 4k blocks. > > Currently 4k blocks are always used when possible but in the future > somebody might want to do some optimizations with sector erase. > > Signed-off-by: Michal Suchanek <hramrach@gmail.com>
I _think_ you might be able to determine the size, no ?
One way is to ask the vendor, but you can also try something like: 1) erase the whole SPI NOR 2) overwrite it with zeroes (or ones ? I think it should be all ones after erasing). 3) Erase sector 0 4) Read some 128 KiB back 5) Observe what is the difference.
Best regards, Marek Vasut
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