linux-kernel - Re: Fwd: Re: [PATCH 2/2] ARM: mvebu: dts: Add dts file for DLink DNS-327L

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Message-ID: <4b2d8ac976bad0cd6b8ea5fa5fa2cd16@mail.ncrmnt.org>
Date:	Wed, 06 May 2015 16:39:59 +0300
From:	Andrew <andrew@...mnt.org>
To:	Gregory CLEMENT <gregory.clement@...e-electrons.com>
Cc:	Andrew Lunn <andrew@...n.ch>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	Linus Walleij <linus.walleij@...aro.org>,
	Wolfram Sang <wsa@...-dreams.de>, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-gpio@...r.kernel.org, Jason Cooper <jason@...edaemon.net>
Subject: Re: Fwd: Re: [PATCH 2/2] ARM: mvebu: dts: Add dts file for DLink  DNS-327L

Gregory CLEMENT писал 06.05.2015 15:13:
> Hi Andrew,
> 
> 
>> 
>> Sorry for the long delay with testing, but here come the results.
>> I've rebased everything to 4.1-rc1
>> 
>> 1. WFI + DeepIdle => freeze after approx:
>>    * 1 hours and 30 minutes, first test
>>    * 3 hours and 40 minutes, second test
>> 2. WFI only (DeepIdle disabled via sysfs) => Still alive after 13 
>> hours
>> and counting
> 
> Thanks for testing it. So, to sum-up, WFI+DeepIdle makes the board 
> freeze
> after a few hours in 4.1-rc1 and 4.0 for sure. Are you aware of any 
> version
> that did not freeze? It would help to know if it was a regression or 
> not.

I've been observing it since 3.16 or so, when I first got mainline 
running on
the box. So my guess would be that it is NOT a regression.

> Andrew Lunn did not report any issue on his 370RD however I will test
> it also on an other Armada 370 base board (a Mirabox) using the .config
> you already sent.
> 
> But what I expect is either a hardware issue, or a hardware 
> configuration
> issue in U-Boot. We still rely a lot on the bootloader and I fear that
> we have some implicit assumptions.
> 
> By the way do you have access on the bootloader sources or at least 
> could
> you give us the U-boot version used?

AFAIK there's no GPL source drop for DNS-327L just yet. I'm using stock 
uboot:

U-Boot 2009.08-00043-gcfe3b76-dirty (Dec 03 2012 - 15:27:58)
Marvell version: 1.1.2 NQ.DNS-327.01

Didn't risk to burn upstream u-boot, just in case the hardware required 
any
special hacks to work.

> Thanks,
> 
> Gregory
> 
> 
> 
>> 
>> The proper patchset will follow as soon as I figure out what change
>> broke
>> dns320l-daemon (The utility that speaks to weltrend mcu on ttyS1)
>> It was working on 3.18.6, on 3.19 and up - it writes data to the port
>> (and mcu acks it),
>> but can't read any responses.
>> 
>> Same thing happens to the python (pyserial inside) implementation of 
>> the
>> fan-daemon:
>> https://github.com/martignlo/DNS-320L
>> 

-- 
Regards,
Andrew
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