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

[Michael Nazzareno Trimarchi]

Hi Aresenly

On Fri, Aug 23, 2024 at 10:53 AM Neil Armstrong
<neil.armstrong at linaro.org> wrote:
>
> 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!
>

Can you please resend the series? I don't find in my mailbox (strange)

Michael

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


-- 
Michael Nazzareno Trimarchi
Co-Founder & Chief Executive Officer
M. +39 347 913 2170
michael at amarulasolutions.com
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