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Date: Thu, 26 Jun 2014 12:06:15 -0300
From: Guido =?iso-8859-1?Q?Mart=EDnez?= <guido@vanguardiasur.com.ar>
To: Tony Lindgren <tony@atomide.com>, Pekon Gupta <pekon@ti.com>
Subject: Re: [PATCH v1 1/3] ARM: dts: am335x-bone: add support for beaglebone
 NAND cape
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Hi Tony, Pekon

On Thu, Jun 26, 2014 at 03:40:44AM -0700, Tony Lindgren wrote:
> * Pekon Gupta <pekon@ti.com> [140624 05:26]:
> > +
> > +&gpmc {
> > +	ranges = <0 0 0 0x01000000>;	/* address range = 16MB (minimum GPMC partition) */
> > +	nand@0,0 {
> > +		status = "disabled";
> > +		reg = <0 0 4>;		/* device IO registers */
> 
> Hmm so what about other capes potentially also using GPMC CS0?
> 
> Can you please do a check with two .dtsi files trying to use
> GPMC CS0 and see what the produced .dtb file looks like after
> decompiling it with dtc?
> 
> I'd assume the 16MB GPMC partition will be just fine for many
> devices and can be also be larger if NOR needs it so maybe it
> can be handled for almost all the cases.
> 
> The names for devices must be unique though to avoid them
> getting merged. And I don't know if gpmc.c skips disabled devices
> properly.
It doesn't. I've just sent a patch for it.

http://lists.infradead.org/pipermail/linux-arm-kernel/2014-June/266966.html

Regards,
Guido

> 
> Regards,
> 
> Tony
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-- 
Guido Martínez, VanguardiaSur
www.vanguardiasur.com.ar