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From: Thierry Reding <thierry.reding-RM9K5IK7kjKj5M59NBduVrNAH6kLmebB@public.gmane.org>
Subject: Re: [PATCH v5 09/16] pwm: tegra: Add device tree support
Date: Mon, 2 Apr 2012 10:37:49 +0200
Message-ID: <20120402083749.GA6576@avionic-0098.adnet.avionic-design.de>
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To: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
Cc: devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Sascha Hauer <s.hauer-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>, Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>, Matthias Kaehlcke <matthias-RprLehDfhQ3k1uMJSBkQmQ@public.gmane.org>, Kurt Van Dijck <kurt.van.dijck-/BeEPy95v10@public.gmane.org>, Rob Herring <rob.herring-bsGFqQB8/DxBDgjK7y7TUQ@public.gmane.org>, Grant Likely <grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>, Colin Cross <ccross-z5hGa2qSFaRBDgjK7y7TUQ@public.gmane.org>, Olof Johansson <olof-nZhT3qVonbNeoWH0uzbU5w@public.gmane.org>, Richard Purdie <rpurdie-Fm38FmjxZ/leoWH0uzbU5w@public.gmane.org>, Mark Brown <broonie-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>, Mitch Bradley <wmb-D5eQfiDGL7eakBO8gow8eQ@public.gmane.org>, Mike Frysinger <vapier-aBrp7R+bbdUdnm+yROfE0A@public.gmane.org>, Eric Miao <eric.y.miao-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Lars-Peter Clausen <lars-Qo5EllUWu/uELgA04lAiVw@public.gmane.org>, Ryan Mallon <rmallon-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Shawn Guo <shawn.guo-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>, Bernhard Walle <walle-pDveNdigDaDu9UdzE1sIFA@public.gmane.org>
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* Stephen Warren wrote:
> On 03/28/2012 08:33 AM, Thierry Reding wrote:
> > Add auxdata to instantiate the PWFM controller from a device tree,
> > include the corresponding nodes in the dtsi files for Tegra 20 and
> > Tegra 30 and add binding documentation.
> >=20
> > Signed-off-by: Thierry Reding <thierry.reding-RM9K5IK7kjKj5M59NBduVrNAH6kLmebB@public.gmane.org>
> > Acked-by: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
>=20
> > diff --git a/drivers/pwm/pwm-tegra.c b/drivers/pwm/pwm-tegra.c
> ...
> > +#ifdef CONFIG_OF
> > +static struct of_device_id tegra_pwm_of_match[] =3D {
> > +	{ .compatible =3D "nvidia,tegra20-pwm" },
> > +	{ .compatible =3D "nvidia,tegra30-pwm" },
>=20
> Could you swap those two lines, so that tegra30-pwm matches first. It
> makes no difference at present, but might in the future if the driver
> actually has to differentiate the two SoCs.

I thought the matching order was determined by the compatible property in t=
he
device tree, not the OF match table of the driver.

Thierry

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