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FROMLIST: mtd: spi-nor: add support to SST sst26* QSPI memories
This patch adds support to the SST sst26* QSPI memories. It also adds a new SST_BLOCK_PROTECT flag so spi_nor_scan() sends a SST Global Block Protection Unlock (98h) command once for all otherwise later Sector Erase and Page Program commands would fail. It was tested with sst26vf016b, sst26vf032b, sst26vf032ba and sst26vf064b on a sama5d2 xplained board at 55.3MHz and 3.3V. sst26wf040b and sst26wf080b were not tested since they are 1.8V memories hence don't fit the sama5d2 xplained board requirements. Signed-off-by:Cyrille Pitchen <cyrille.pitchen@atmel.com> Signed-off-by:
Enric Balletbo i Serra <enric.balletbo@collabora.com> (pwclient git-am 9392589)
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