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If 'oob_required' is not set by the caller (for example 'oobbuf' is NULL),
then driver doesn't copy OOB data from 'oob_poi' to special controller
structures, so zeroes will be written as OOB. But, generic raw NAND logic
in 'nand_base.c' already handles case when OOB is not required to write by
filling 'oob_poi' with 0xFF's. So let's remove 'oob_required' check to
always read 'oob_poi' data for OOB.
Kernel driver (drivers/mtd/nand/raw/meson_nand.c) works in the same way,
so need to keep same behaviour here.
Fixes: c2e8c4d09a7a ("mtd: rawnand: Meson NAND controller support")
Signed-off-by: Arseniy Krasnov <avkrasnov@salutedevices.com>
Reviewed-by: Michael Trimarchi <michael@amarulasolutions.com>
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Boot ROM on Meson needs some pages to be read/written in a special mode:
384 byte ECC mode (so called "short" by Amlogic) and with scrambling
enabled. Such pages are located on the chip in the following way (for
example):
[ p0 ][ p1 ][ p2 ][ p3 ][ p4 ][ p5 ][ p6 ][ p7 ] ... [ pN ]
^ ^ ^ ^
pX is page number "X". "^" means "special" page used by boot ROM - e.g.
every 2nd page in the range of [0, 7]. Step (2 here) and last page in
range is read from the device tree.
Signed-off-by: Arseniy Krasnov <avkrasnov@salutedevices.com>
Reviewed-by: Michael Trimarchi <michael@amarulasolutions.com>
Link: https://lore.kernel.org/r/20240826131710.29746-4-avkrasnov@salutedevices.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
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Move call 'meson_nfc_cmd_seed()' and check for 'NAND_NEED_SCRAMBLING'
to 'meson_nfc_cmd_access()', thus removing code duplication.
Signed-off-by: Arseniy Krasnov <avkrasnov@salutedevices.com>
Reviewed-by: Michael Trimarchi <michael@amarulasolutions.com>
Link: https://lore.kernel.org/r/20240826131710.29746-3-avkrasnov@salutedevices.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
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https://source.denx.de/u-boot/custodians/u-boot-nand-flash
The first patch is by Weizhao Ouyang and avoids sf probe crashes.
The second patch is by Arseniy Krasnov and adds basic support for Amlogic
Meson NAND controller on AXG.
The following four patches are by Alexander Dahl and apply some fixes to
drivers/mtd/nand/raw/ and port some changes applied in Linux.
The following patch is by Bruce Suen and adds support for XTX SPINAND.
Finally, the last patch is again by Arseniy Krasnov and adds access to
OTP region, supporting info, dump, write and lock operations.
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Basic support for Amlogic Meson NAND controller on AXG. This version
works at only first EDO mode.
Based on Linux version 6.7.0-rc4.
Link: https://lore.kernel.org/all/20240210223927.570043-1-avkrasnov@salutedevices.com
Signed-off-by: Arseniy Krasnov <avkrasnov@salutedevices.com>
Reviewed-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
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