linux-kernel - Re: [PATCH RESEND] ARM: ep93xx: Disable TS-72xx watchdog before uncompressing

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Message-ID: <20170208122354.GA5912@afzalpc>
Date:   Wed, 8 Feb 2017 17:53:54 +0530
From:   Afzal Mohammed <afzal.mohd.ma@...il.com>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     arm@...nel.org, arnd@...db.de, olof@...om.net, khilman@...nel.org,
        Hartley Sweeten <hsweeten@...ionengravers.com>,
        Ryan Mallon <rmallon@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "moderated list:ARM/CIRRUS LOGIC EP93XX ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        open list <linux-kernel@...r.kernel.org>,
        Lokesh Vutla <lokeshvutla@...com>
Subject: Re: [PATCH RESEND] ARM: ep93xx: Disable TS-72xx watchdog before
 uncompressing

Hi,

On Thu, Feb 02, 2017 at 12:12:26PM -0800, Florian Fainelli wrote:
> The TS-72xx/73xx boards have a CPLD watchdog which is configured to
> reset the board after 8 seconds, if the kernel is large enough that this
> takes about this time to decompress the kernel, we will encounter a
> spurious reboot.

so once it reaches Kernel proper, that dog is being killed, right ?

iirc, TI AM335x's & AM43x's ROM code too leaves the on-chip watchdog
enabled & the bootloader disables it (else once it boots to prompt, it
reboots always unless watchdog driver [if present] takes care of it),
Lokesh, right ?

But yes, that brings a bootloader dependency.

Regards
afzal