linux-kernel - Re: [PATCH v2 0/4] ARM/arm64: exynos: Fix missing missing reg warning for syscon restart nodes

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Date:   Fri, 09 Feb 2018 12:17:49 +0100
From:   Marek Szyprowski <m.szyprowski@...sung.com>
To:     Adam Borowski <kilobyte@...band.pl>
Cc:     Krzysztof Kozlowski <krzk@...nel.org>,
        Kukjin Kim <kgene@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Russell King <linux@...linux.org.uk>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Pankaj Dubey <pankaj.dubey@...sung.com>,
        Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>
Subject: Re: [PATCH v2 0/4] ARM/arm64: exynos: Fix missing missing reg
 warning for syscon restart nodes

Hi Adam,

On 2018-02-09 11:48, Adam Borowski wrote:
> On Thu, Feb 08, 2018 at 02:46:32PM +0100, Marek Szyprowski wrote:
>> On 2018-01-30 22:18, Krzysztof Kozlowski wrote:
>>> Changes since v1:
>>> 1. New patch (1/4) calling devm_of_platform_populate() in PMU driver,
>>>      following Rob's advice.
>>> 2. The DTS patches moving reboot/poweroff nodes (3/4 and 4/4) now depend
>>>      on this.
>> Tested-by: Marek Szyprowski <m.szyprowski@...sung.com>
>>
>> Tested following boards and reboot works fine:
>> Exynos3250 (artik5-eval)
>> Exynos4412 (trats2)
>> Exynos5410 (odroid xu)
>> Exynos5422 (odroid xu3/xu4)
>> Exynos5433 (tm2)
> Doesn't seem to work on mine:
> Exynos4412 (odroid u2)
>
> Rebooting worked correctly with 3.8 + gazillion non-mainlined patches (as
> shipped with providen images), never did with mainline.
>
> Tested on current mid-of-the-merge-window, plus these four patches.
>
>
> It's possible that I'm doing something wrong; might need an updated u-boot,
> etc.  Log of a boot-till-reboot+hang session attached.

Reboot on Odroid X2/U2/U3 doesn't work now. It is broken by devfreq since
a few kernel releases. Please disable devfreq in your .config and reboot
should also work. That's why I didn't put Odroid U3 on the above list.

Best regards
-- 
Marek Szyprowski, PhD
Samsung R&D Institute Poland