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

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Date:	Sun, 03 May 2015 12:58:53 +0200
From:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
To:	Andrew <andrew@...mnt.org>,
	Gregory CLEMENT <gregory.clement@...e-electrons.com>
CC:	Andrew Lunn <andrew@...n.ch>, 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

On 03.05.2015 12:18, Andrew wrote:
[...]
> 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
>
> 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

Andrew,

did you realize that you request a non-standard UART baudrate in your
python code above:

port = serial.Serial("/dev/ttyS1", 115600, 8, "N", 1, 0.1)

s/115600/115200/

Does that fix your communication issues?

Sebastian
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