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

[Neil Armstrong]

On 23/08/2024 10:29, Arseniy Krasnov wrote:
> 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

Sure I can pick them if reviewed!

Neil

>>
>> 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(-)
>>>>>>
>>>>>
>>>>
>>
>>
>>