[U-Boot] [PATCH 2/2] at91sam9263ek: active watchdog support via at91sam9263ek_wdt_config

[Giulio Benetti]

Jean-Christophe PLAGNIOL-VILLARD wrote:

> On 12:52 Sat 13 Jun     , Giulio Benetti wrote:
>> In this way the linux driver won't work(the one by Renaud CERRATO).
>> Because it expects MR register not to be set, or to be set enabled.
> it's work we have test it
> you need to enable it in the at91bootstrap or in your lowlevel board
> config
>> 
>> After I don't agree refreshing watchdog inside atmel_usart.c
> you MUST do it otherwise you board will be not usable at all
> simple exammple
> you stop the boot and get a prompt if you do not type any command you
> reboot it's not what we expect
>> If u-boot hangs there instead of execute bootcmd, then the machine lies
>> there forever.
>> In my opinion we should put WATCHDOG_RESET() inside main_loop and nand
>> write and read.
>> What do you think?
> NACK for the main_loop
> 
> nand read write ok
> 
> but if we excecute the bootcmd we have finished and jump to the os
> so it's over for u-boot
> 
> the OS will have to care about the watchdog
> 
> Best Regards,
> J.

Agree with you.
But you have to delete hw_watchdog_init().
If you set there MR then linux won't be able to do it.
The patch needs only the WATCHDOG_RESET() and nothing more.

-- 
Giulio Benetti
R&D
Micronova srl