From: Arnd Bergmann <arnd@arndb.de>
To: Stephen Warren <swarren@nvidia.com>
Cc: Linus Walleij <linus.walleij@linaro.org>,
Grant Likely <grant.likely@secretlab.ca>,
Colin Cross <ccross@android.com>,
Erik Gilling <konkers@android.com>,
Olof Johansson <olof@lixom.net>,
Russell King <linux@arm.linux.org.uk>,
"devicetree-discuss@lists.ozlabs.org"
<devicetree-discuss@lists.ozlabs.org>,
"linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Belisko Marek <marek.belisko@gmail.com>,
Jamie Iles <jamie@jamieiles.com>,
Shawn Guo <shawn.guo@freescale.com>,
Sergei Shtylyov <sshtylyov@mvista.com>
Subject: Re: [RFC PATCH v2 00/13] arm/tegra: Initialize GPIO & pinmux from DT
Date: Thu, 18 Aug 2011 11:15:52 +0200 [thread overview]
Message-ID: <201108181115.53101.arnd@arndb.de> (raw)
In-Reply-To: <74CDBE0F657A3D45AFBB94109FB122FF04AF6F3062@HQMAIL01.nvidia.com>
On Thursday 18 August 2011, Stephen Warren wrote:
> It looks like DT already supports the generic case for GPIO; each GPIO
> reference is of the form:
>
> <&gpio 69 0>
>
> and so each GPIO has a "parent" specified, and hence can come from a
> different controller.
>
> For drivers, this is all completely hidden by of_get_gpio().
>
> I imagine we'd just use the same pattern for pinmux. This would both
> support the general case, and end up being consistent with how GPIOs
> already work, so this seems like a win both ways.
>
Ah right. I had not seen the gpio binding yet, so that definitely works.
Arnd
next prev parent reply other threads:[~2011-08-18 9:16 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-15 20:28 [RFC PATCH v2 00/13] arm/tegra: Initialize GPIO & pinmux from DT Stephen Warren
2011-08-15 20:28 ` [RFC PATCH v2 01/13] arm/tegra: Prep boards for gpio/pinmux conversion to pdevs Stephen Warren
2011-08-15 20:28 ` [RFC PATCH v2 02/13] arm/tegra: Avoid duplicate gpio/pinmux devices with dt Stephen Warren
2011-08-16 20:46 ` Stephen Warren
2011-08-15 20:28 ` [RFC PATCH v2 03/13] arm/tegra: board-dt: Add AUXDATA for tegra-gpio and tegra-pinmux Stephen Warren
2011-08-16 3:30 ` Shawn Guo
2011-08-16 20:24 ` Stephen Warren
2011-08-15 20:28 ` [RFC PATCH v2 04/13] docs/dt: Document nvidia,tegra20-gpio's nvidia,enabled-gpios property Stephen Warren
2011-08-15 20:28 ` [RFC PATCH v2 05/13] arm/dt: Tegra: Add nvidia,gpios property to GPIO controller Stephen Warren
2011-08-15 20:28 ` [RFC PATCH v2 06/13] docs/dt: Document nvidia,tegra20-pinmux binding Stephen Warren
2011-08-16 3:48 ` Shawn Guo
2011-08-16 13:51 ` Arnd Bergmann
2011-08-16 17:32 ` Stephen Warren
2011-08-17 6:02 ` Shawn Guo
2011-08-17 6:17 ` Shawn Guo
2011-08-17 11:37 ` Arnd Bergmann
2011-08-17 11:43 ` Jamie Iles
2011-08-18 6:36 ` Stephen Warren
2011-08-15 20:28 ` [RFC PATCH v2 07/13] arm/dt: Tegra: Add pinmux node Stephen Warren
2011-08-15 20:28 ` [RFC PATCH v2 08/13] gpio/tegra: Convert to a platform device Stephen Warren
2011-08-15 20:28 ` [RFC PATCH v2 09/13] gpio/tegra: Add device tree support Stephen Warren
2011-08-16 3:39 ` Shawn Guo
2011-08-15 20:28 ` [RFC PATCH v2 10/13] arm/tegra: Convert pinmux driver to a platform device Stephen Warren
2011-08-15 20:28 ` [RFC PATCH v2 11/13] arm/tegra: Add device tree support to pinmux driver Stephen Warren
2011-08-16 3:45 ` Shawn Guo
2011-08-23 23:35 ` Stephen Warren
2011-08-15 20:28 ` [RFC PATCH v2 12/13] arm/tegra: board-dt: Remove dependency on non-dt pinmux functions Stephen Warren
2011-08-15 20:28 ` [RFC PATCH v2 13/13] arm/tegra: Remove temporary gpio/pinmux registration workaround Stephen Warren
2011-08-16 13:09 ` [RFC PATCH v2 00/13] arm/tegra: Initialize GPIO & pinmux from DT Arnd Bergmann
2011-08-16 14:01 ` Linus Walleij
2011-08-16 14:37 ` Arnd Bergmann
2011-08-16 14:45 ` Linus Walleij
2011-08-16 17:12 ` Stephen Warren
2011-08-17 11:23 ` Arnd Bergmann
2011-08-18 6:22 ` Stephen Warren
2011-08-18 9:15 ` Arnd Bergmann [this message]
2011-08-23 12:51 ` Linus Walleij
2011-08-23 18:49 ` Stephen Warren
2011-08-23 20:00 ` Linus Walleij
2011-08-22 19:56 ` Stephen Warren
2011-08-22 22:56 ` Olof Johansson
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