Hi Pratyush, On 12/1/20 3:57 PM, Pratyush Yadav wrote: > Some flashes like the Cypress S28 family use ECC. Under this ECC scheme, > multi-pass writes to an ECC block is not allowed. In other words, once > data is programmed to an ECC block, it can't be programmed again without > erasing it first. > > Upper layers like file systems need to be given this information so they > do not cause error conditions on the flash by attempting multi-pass > programming. This can be done by setting 'writesize' in 'struct > mtd_info'. > > Set the default to 1 but allow flashes to modify it in fixup hooks. If > more flashes show up with this constraint in the future it might be > worth it to add it to 'struct flash_info', but for now increasing its > size is not worth it. > > Signed-off-by: Pratyush Yadav <p.ya...@ti.com> > Reviewed-by: Tudor Ambarus <tudor.amba...@microchip.com> > --- >
Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git spi-nor/next, thanks! [2/3] mtd: spi-nor: core: Allow flashes to specify MTD writesize https://git.kernel.org/mtd/c/afd473e858 Regards Vignesh
