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

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Message-ID: <20150503095917.GQ22845@sirena.org.uk>
Date:	Sun, 3 May 2015 10:59:17 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Martin Sperl <kernel@...tin.sperl.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 Sun, May 03, 2015 at 11:01:05AM +0200, Martin Sperl wrote:

> 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.

Hrm, yes - that should work.  I'd ask Greg, that's not something the bus
implements.

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