linux-kernel - Re: [linux-sunxi] [PATCH 2/3] spidev: Add DT binding example.

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Message-Id: <A92B1688-9A12-4462-BA02-AEEE197C0FF4@martin.sperl.org>
Date:	Sun, 3 May 2015 11:01:05 +0200
From:	Martin Sperl <kernel@...tin.sperl.org>
To:	Mark Brown <broonie@...nel.org>
Cc:	Michal Suchanek <hramrach@...il.com>,
	"Eric D." <eric.dillmann@...il.com>,
	linux-sunxi <linux-sunxi@...glegroups.com>,
	Jonathan Corbet <corbet@....net>,
	Hans de Goede <hdegoede@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	linux-spi <linux-spi@...r.kernel.org>
Subject: Re: [linux-sunxi] [PATCH 2/3] spidev: Add DT binding example.


> On 30.04.2015, at 21:58, Mark Brown <broonie@...nel.org> wrote:
> 
> A big reason for that is that it's not in my inbox for me to review,
> these messages I flagged as unhelpful aren't going to help with that if
> only because I don't want to create the impression that such behaviour
> achieves results.
> 

What about implementing it like this:
echo -n “spi32761.4” > /sys/bus/spi/drivers/spidev/bind

Would this be an acceptable solution?

This is actually mentioned in Documentation/spi/spidev as a
possible option for the future - quote:

> (Sysfs also supports userspace driven binding/unbinding of drivers to
> devices.  That mechanism might be supported here in the future.)

Not sure why it does not work right now (but it works for “real”
device-drivers), but I guess it has to do with compatibility checks.

Martin


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