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

[Arseniy Krasnov]

Hi! Got it, thanks!

On 23.08.2024 11:10, Michael Nazzareno Trimarchi wrote:
> Hi Arseniy
> 
> On Thu, Aug 22, 2024 at 9:04 AM Arseniy Krasnov
> <avkrasnov at salutedevices.com> wrote:
>>
>> Hi, thanks!
>>
>> Thanks, Arseniy
>>
>> On 22.08.2024 00:17, Michael Nazzareno Trimarchi wrote:
>>> Hi
>>>
>>> I will read them tomorrow ;)
>>>
>>> Thank you for understanding
>>>
> 
> All the series are delegated to Neil. I will review anyway but I think
> that will then pick from him
> 
> Michael
> 
>>> Michael
>>>
>>> Il mer 21 ago 2024, 22:25 Arseniy Krasnov <avkrasnov at salutedevices.com> ha
>>> scritto:
>>>
>>>> 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/20240507230903.3399594-1-avkrasnov@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.
>>>>>
>>>>> 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(-)
>>>>>
>>>>
>>>
> 
> 
>