linux-kernel - Re: getting allwinner SoC support upstream (was Re: Uploading linux (3.9.4-1))

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Date:	Thu, 6 Jun 2013 11:29:48 +0200
From:	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
To:	"jonsmirl@...il.com" <jonsmirl@...il.com>
Cc:	Luke Kenneth Casson Leighton <lkcl@...l.net>,
	devicetree-discuss <devicetree-discuss@...abs.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	debian-arm@...ts.debian.org,
	ARM Linux Mailing List <linux-arm-kernel@...ts.infradead.org>,
	Linux on small ARM machines 
	<arm-netbook@...ts.phcomp.co.uk>, debian-release@...ts.debian.org,
	debian-kernel@...ts.debian.org,
	Maxime Ripard <maxime.ripard@...e-electrons.com>
Subject: Re: getting allwinner SoC support upstream (was Re: Uploading linux
 (3.9.4-1))

Hello,

On Wed, 5 Jun 2013 16:48:27 -0400, jonsmirl@...il.com wrote:

> >  fex covers *eeeeeevvveeerryyyythiiiing* - right from flipping the
> > multiplexing for all 3 SD/MMC cards so that you can pretend that SD0
> > is SD2 and you can specify *different* GPIOs for each to say which
> > is
> 
> You can do all of this in device tree too. If the exact syntax doesn't
> exist you can use 'allwinner,' prefixes on the node names.
> Also check out pinctrl so that it doesn't get reinvented.

Are people looking at the mainline source code?

There is already a pinctrl driver for sunxi platforms (i.e Allwinner
SoCs), it's at drivers/pinctrl/pinctrl-sunxi.c, and it's DT-based and
allows to describe the pin muxing in the Device Tree.

Cc'ing Maxime Ripard, who is the mach-sunxi maintainer in the mainline
kernel.

Best regards,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
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