Patchset is based on patchset for Linux (today merged to nand-next):
https://lore.kernel.org/linux-mtd/20240507230903.3399594-1-avkras...@salutedevices.com/
Here is description from it:
> Amlogic's boot ROM code needs that some pages on NAND must be written
> in special "short" ECC mode with scrambling enabled. Such pages:
> 1) Contain some metadata about hardware.
> 2) Located with some interval starting from 0 offset, until some
> specified offset. Interval and second offset are set in the
> device tree.
>
> This patchset adds R/W support for such pages. To enable it we can setup
> it in dts:
>
> nand-is-boot-medium;
> amlogic,boot-pages = <1024>;
> amlogic,boot-page-step = <128>;
>
> It means that each 128th page in range 0 to 1024 pages will be accessed
> in special mode ("short" ECC + scrambling). In practice this feature is
> needed when we want to update first block of NAND - driver will enable
> required mode by itself using value from device tree.
The only difference is that patchset for Linux updates DT bindings, while
this adds NAND_IS_BOOT_MEDIUM flag support.
Arseniy Krasnov (3):
mtd: rawnand: nand_base: support for 'NAND_IS_BOOT_MEDIUM' flag
mtd: rawnand: meson: refactor use of 'meson_nfc_cmd_access()'
mtd: rawnand: meson: read/write access for boot ROM pages
drivers/mtd/nand/raw/meson_nand.c | 84 +++++++++++++++++++++----------
drivers/mtd/nand/raw/nand_base.c | 3 ++
include/linux/mtd/rawnand.h | 6 +++
3 files changed, 66 insertions(+), 27 deletions(-)
--
2.35.0
