[PATCH 6/8] ARM: imx8m: Fix reset in SPL on NXP iMX8MP EVK

[Fabio Estevam]

Hi,

On Wed, Apr 29, 2020 at 10:05 AM Harald Seiler <hws at denx.de> wrote:
>
> From: Marek Vasut <marex at denx.de>
>
> Board files should not re-implement do_reset() to work around this
> function not being defined in for specific configurations. Rather,
> the fix is to compile in drivers which implement this properly.
> This patch enables sysreset and watchdog drivers in SPL and ties
> them together to implement the same as the do_reset() hack in the
> board file, except correctly in the DM/DT framework.
>
> Signed-off-by: Marek Vasut <marex at denx.de>
> Cc: Fabio Estevam <festevam at gmail.com>
> Cc: Flavio Suligoi <f.suligoi at asem.it>
> Cc: Harald Seiler <hws at denx.de>
> Cc: Igor Opaniuk <igor.opaniuk at toradex.com>
> Cc: Marcel Ziswiler <marcel.ziswiler at toradex.com>
> Cc: Oleksandr Suvorov <oleksandr.suvorov at toradex.com>
> Cc: Peng Fan <peng.fan at nxp.com>
> Cc: Stefano Babic <sbabic at denx.de>

I noticed that this patch breaks the boot on i.MX8MP EVK. Only the
following line is printed on boot:

U-Boot SPL 2020.07-rc1-00014-g8142a97d54 (May 04 2020 - 11:15:50 -0300)

If I revert this patch I can boot it again:

U-Boot SPL 2020.07-rc1-00015-g02cd8db94f (May 04 2020 - 11:17:25 -0300)
Normal Boot
Failed to find clock node. Check device tree
WDT:   Not found!
Trying to boot from BOOTROM
image offset 0x8000, pagesize 0x200, ivt offset 0x0


U-Boot 2020.07-rc1-00015-g02cd8db94f (May 04 2020 - 11:17:25 -0300)

CPU:   Freescale i.MX8MP rev1.0 at 1000 MHz
Reset cause: POR
Model: NXP i.MX8MPlus EVK board
DRAM:  6 GiB
MMC:   FSL_SDHC: 1, FSL_SDHC: 2
Loading Environment from MMC... OK
In:    serial
Out:   serial
Err:   serial
Net:   No ethernet found.
Hit any key to stop autoboot:  0
u-boot=>

The "Failed to find clock node. Check device tree" looks suspicious.

Any ideas?