Re: [PATCH v2 0/3] Meson: R/W support for pages used by boot ROM

Hi, sorry, pls ping  😄

Thanks

On 08.07.2024 10:13, Arseniy Krasnov wrote:
> Patchset is based on patchset for Linux (today merged to nand-next):
> https://lore.kernel.org/linux-mtd/[email protected]/
> 
> 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.
> 
> Changelog:
>  v1 -> v2:
>  * Pls see per-patch changelog.
> 
> 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       |  5 ++
>  3 files changed, 65 insertions(+), 27 deletions(-)
>