[PATCH v1 1/3] ARM: dts: am335x-bone: add support for beaglebone NAND cape

Guido Martínez guido at vanguardiasur.com.ar
Thu Jun 26 08:06:15 PDT 2014


Hi Tony, Pekon

On Thu, Jun 26, 2014 at 03:40:44AM -0700, Tony Lindgren wrote:
> * Pekon Gupta <pekon at ti.com> [140624 05:26]:
> > +
> > +&gpmc {
> > +	ranges = <0 0 0 0x01000000>;	/* address range = 16MB (minimum GPMC partition) */
> > +	nand at 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



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