[PATCH 5/5] ARM: i.MX: add MNT Reform board support

[Antony Pavlov]

On Sun, 27 Dec 2020 22:50:42 +0100
Lucas Stach <dev at lynxeye.de> wrote:

Hi!

I'm very glad to see that barebox runs on MNT Reform!

Are you planning to add MIPI DSI display output?

> The MNT Reform is a DIY Laptop, built around a Boundarydevices i.MX8MQ SoM.
> This adds a pretty minimal support, as there is no upstream DT yet. It also
> does not properly abstract the SoM (power supply init in MNT Reform lowlevel
> code and only single DRAM configuration supported), as there are a lot of
> variants of the SoM and I'm only able to test the single one that will be
> shipped with the Reform.
> 
> What has been tested to work:
> - SD card
> - eMMC
> - Gigabit network
> - NVMe storage
> 
> There is a quirk in the board support: the Nitrogen SoM only allows to
> configure one of the BOOT_MODE straps, which means the choices for the boot
> selection are only "boot from fuses", which means eMMC boot and
> "serial boot". As serial boot isn't really useful on the device (requires
> USB A<->A cable with VBUS protection), we rely on the BootROM fallback to
> boot from SD card in this mode. The board support code thus treats the
> bootsource "serial" as SD card boot.
> 
> Signed-off-by: Lucas Stach <dev at lynxeye.de>
> ---
>  arch/arm/boards/Makefile                      |    1 +
>  arch/arm/boards/mnt-reform/Makefile           |    2 +
>  arch/arm/boards/mnt-reform/board.c            |   40 +
>  .../mnt-reform/flash-header-mnt-reform.imxcfg |    6 +
>  arch/arm/boards/mnt-reform/lowlevel.c         |  187 +++
>  arch/arm/boards/mnt-reform/lpddr4-timing.c    | 1012 +++++++++++++++++
>  arch/arm/dts/Makefile                         |    1 +
>  arch/arm/dts/imx8mq-mnt-reform2.dts           |  223 ++++
>  arch/arm/mach-imx/Kconfig                     |    9 +
>  images/Makefile.imx                           |    6 +
>  10 files changed, 1487 insertions(+)
>  create mode 100644 arch/arm/boards/mnt-reform/Makefile
>  create mode 100644 arch/arm/boards/mnt-reform/board.c
>  create mode 100644 arch/arm/boards/mnt-reform/flash-header-mnt-reform.imxcfg
>  create mode 100644 arch/arm/boards/mnt-reform/lowlevel.c
>  create mode 100644 arch/arm/boards/mnt-reform/lpddr4-timing.c
>  create mode 100644 arch/arm/dts/imx8mq-mnt-reform2.dts
> 
...
> 
> 
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-- 
Best regards,
  Antony Pavlov