linux-kernel - Re: [PATCH v2 3/8] ARM: dts: exynos: Fix watchdog reset on Exynos4412

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Message-ID: <CAJKOXPf7MDtg1KbtdBcvo78BihKPA3M6OhuEfMAfrhYGzrOZAA@mail.gmail.com>
Date:   Mon, 13 Mar 2017 08:41:08 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Guenter Roeck <linux@...ck-us.net>
Cc:     Wim Van Sebroeck <wim@...ana.be>, Rob Herring <robh+dt@...nel.org>,
        Kukjin Kim <kgene@...nel.org>,
        Javier Martinez Canillas <javier@....samsung.com>,
        linux-watchdog@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org
Subject: Re: [PATCH v2 3/8] ARM: dts: exynos: Fix watchdog reset on Exynos4412

On Sun, Mar 12, 2017 at 10:48 PM, Guenter Roeck <linux@...ck-us.net> wrote:
> On 03/11/2017 09:25 AM, Krzysztof Kozlowski wrote:
>>
>> The Exynos4412 has the same watchdog as newer SoCs (e.g. Exynos5250).
>> Just like the others, for working it requires additional steps in Power
>> Management Unit: unmasking the reset request and enabling the system
>> reset.  Without these additional steps in PMU, the watchdog will not be
>> able to reset the system on expiration event.
>>
>> Change the compatible of Exynos4412 watchdog device node to
>> samsung,exynos5250-wdt which includes the additional PMU steps.
>>
>> This will also fix infinite watchdog interrupt in soft mode (lack of
>> interrupt clear) because it is also included in samsung,exynos5250-wdt.
>>
>> Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
>
>
> Acked-by: Guenter Roeck <linux@...ck-us.net>
>
> I assume this patch will be pushed through some arm tree.

Yes, I will take it through samsung-soc.

Best regards,
Krzysztof