On 6/9/23 15:43, Miquel Raynal wrote: > Describe this new part. I simply copy/pasted the entry for its cousins > with twice more/less storage capacity. The datasheet is public: All the cousins should be updated to use PARSE_SFDP instead. > https://ww1.microchip.com/downloads/aemDocuments/documents/MPD/ProductDocuments/DataSheets/SST26VF032B-SST26VF032BA-2.5V-3.0V-32-Mbit-Serial-Quad-IO-%28SQI%29-Flash-Memory-20005218K.pdf > Without the NO_SFDP_FLAGs only partial erasures happen so I believe the What do you mean by "partial erasures happen"? > 4K sector flag is needed. I cannot test dual/quad reads, so I kept these > to mimic the other entries, just in case. The flash seems to have the SFDP tables (you dumped them below), so I would expect the 4k erase size to be discovered at SFDP parsing time. > > Here are the sfdp tables plus base testing to show it works. > > $ cat /sys/bus/spi/devices/spi0.0/spi-nor/partname > sst26vf032b > $ cat /sys/bus/spi/devices/spi0.0/spi-nor/jedec_id > bf2642 > $ cat /sys/bus/spi/devices/spi0.0/spi-nor/manufacturer > sst > $ xxd -p /sys/bus/spi/devices/spi0.0/spi-nor/sfdp > 53464450060102ff00060110300000ff81000106000100ffbf0001180002 > 0001fffffffffffffffffffffffffffffffffd20f1ffffffff0144eb086b > 083b80bbfeffffffffff00ffffff440b0c200dd80fd810d820914824806f > 1d81ed0f773830b030b0f7ffffff29c25cfff030c080ffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffff0004fff37f0000f57f0000f9ff > 3d00f57f0000f37f0000ffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff > ffffbf2642ffb95ffdff30f260f332ff0a122346ff0f19320f1919ffffff > ffffffff00669938ff05013506040232b03072428de89888a585c09faf5a > ffff06ec060c0003080bffffffffff07ffff0202ff060300fdfd040600fc > 0300fefe0202070e > $ md5sum /sys/bus/spi/devices/spi0.0/spi-nor/sfdp > e7efddddb3d5ee89ca37bf6b6e789645 /sys/bus/spi/devices/spi0.0/spi-nor/sfdp > > $ dd if=/dev/urandom of=./qspi_test bs=1M count=1 > 1+0 records in > 1+0 records out > $ mtd_debug write /dev/mtd0 0 1048576 qspi_test > Copied 1048576 bytes from qspi_test to address 0x00000000 in flash > $ mtd_debug erase /dev/mtd0 0 1048576 > Erased 1048576 bytes from address 0x00000000 in flash > $ mtd_debug read /dev/mtd0 0 1048576 qspi_read > Copied 1048576 bytes from address 0x00000000 in flash to qspi_read > $ hexdump qspi_read > 0000000 ffff ffff ffff ffff ffff ffff ffff ffff > * > 0100000 > $ mtd_debug write /dev/mtd0 0 1048576 qspi_test > Copied 1048576 bytes from qspi_test to address 0x00000000 in flash > $ mtd_debug read /dev/mtd0 0 1048576 qspi_read > Copied 1048576 bytes from address 0x00000000 in flash to qspi_read > $ sha1sum qspi_test qspi_read > 2f2f191c7a937eca5db21a1c39e79e7327587cc1 qspi_test > 2f2f191c7a937eca5db21a1c39e79e7327587cc1 qspi_read > > Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx> > --- > drivers/mtd/spi-nor/sst.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/mtd/spi-nor/sst.c b/drivers/mtd/spi-nor/sst.c > index 99c8a19493f5..43f37d66f73a 100644 > --- a/drivers/mtd/spi-nor/sst.c > +++ b/drivers/mtd/spi-nor/sst.c > @@ -113,6 +113,10 @@ static const struct flash_info sst_nor_parts[] = { > FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_SWP_IS_VOLATILE) > NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ) > .fixups = &sst26vf_nor_fixups }, > + { "sst26vf032b", INFO(0xbf2642, 0, 64 * 1024, 64) > + FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_SWP_IS_VOLATILE) > + NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) If you replace the NO_SFDP_FLAGS line with PARSE_SFDP, is the flash working correctly? > + .fixups = &sst26vf_nor_fixups }, > { "sst26vf064b", INFO(0xbf2643, 0, 64 * 1024, 128) > FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_SWP_IS_VOLATILE) > NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
