[PATCH] mx6cuboxi: Convert to watchdog driver model

[Christian Gmeiner]

On 2024-03-27 14:18, Fabio Estevam wrote:
> Commit 68dcbdd594d4 ("ARM: imx: Add weak default reset_cpu()") caused
> the 'reset' command in U-Boot to not cause a board reset.
> 
> Fix it by switching to the watchdog driver model via sysreset, which
> is the preferred method for implementing the watchdog reset.
> 
> Signed-off-by: Fabio Estevam <festevam at gmail.com>
> ---
> Christian,
> 
> Can you test this, please?
> 

Sure.

Before the patch:

U-Boot 2024.04-rc5-00003-g774ec4fda8 (Mar 27 2024 - 16:48:35 +0100)

CPU:   Freescale i.MX6Q rev1.3 996 MHz (running at 792 MHz)
CPU:   Extended Commercial temperature grade (-20C to 105C) at 36C
Reset cause: POR
Model: SolidRun HummingBoard2 Dual/Quad (1.5som+emmc)
Board: MX6 Cubox-i
DRAM:  2 GiB
Core:  82 devices, 17 uclasses, devicetree: fit
MMC:   FSL_SDHC: 1, FSL_SDHC: 2
Loading Environment from MMC... *** Warning - bad CRC, using default
environment

In:    serial
Out:   serial
Err:   serial
Net:   eth0: ethernet at 2188000
Hit any key to stop autoboot:  0 
=> 
=> reset
resetting ...
=> 
=> 
=> reset
resetting ...
=> 
=> 


After the patch:


U-Boot 2024.04-rc5-00003-g3988fdb94c (Mar 27 2024 - 17:00:03 +0100)

CPU:   Freescale i.MX6Q rev1.3 996 MHz (running at 792 MHz)
CPU:   Extended Commercial temperature grade (-20C to 105C) at 36C
Reset cause: POR
Model: SolidRun HummingBoard2 Dual/Quad (1.5som+emmc)
Board: MX6 Cubox-i
DRAM:  2 GiB
Core:  84 devices, 19 uclasses, devicetree: fit
WDT:   Started watchdog at 20bc000 with servicing every 1000ms (128s
timeout)
MMC:   FSL_SDHC: 1, FSL_SDHC: 2
Loading Environment from MMC... *** Warning - bad CRC, using default
environment

In:    serial
Out:   serial
Err:   serial
Net:   eth0: ethernet at 2188000
Hit any key to stop autoboot:  0 
=> 
=> 
=> reset
resetting ...

U-Boot SPL 2024.04-rc5-00003-g3988fdb94c (Mar 27 2024 - 17:00:03 +0100)
WDT:   Started watchdog at 20bc000 with servicing every 1000ms (128s
timeout)
...



Tested-by: Christian Gmeiner <cgmeiner at igalia.com>

Thanks & Regards,
Christian