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

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Message-ID: <20150504101207.GR22845@sirena.org.uk>
Date:	Mon, 4 May 2015 11:12:07 +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 11:00:40PM +0200, Martin Sperl wrote:

> I will investigate the fine details, but I fear we may need some
> “compatibility” magic similar to “new_id” in USB to make it work,
> because it seems as if you can ONLY force a driver to bind if it
> _is_ compatible...

I'm confused.  What would the point of the functionality be if not to
override the existing data, otherwise we'd already have bound the
driver?

> But from what I can tell this functionality (mentioned in this article
> by Greg) has not been moved into driver-core and bus, so we would need
> to run our own version of it.

That seems like things are being done at the wrong level.

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