[PATCH] ARM: iomux-mx51: Always define PU E for pins used as GPIO

[Lothar Waßmann]

Hi,

Alexander Shiyan writes:
> > On Tue, May 21, 2013 at 12:27:25PM +0400, Alexander Shiyan wrote:
> > > This patch adds a PUE bit for pins which used as GPIO. This allow
> > > to use the GPIOs correctly as inputs when source is open-drain with
> > > external pullup resistor (IRQ open-drain outputs for example).
> > 
> > I don't understand. If there's an external pullup why do you want to
> > turn on the internal one?
> 
> It is just switch off keeper circuit.
> 
If you want to switch the keeper circuit off why don't you do that by
removing PAD_CTL_PKE rather than adding PAD_CTL_PUE?


Lothar Waßmann
-- 
___________________________________________________________

Ka-Ro electronics GmbH | Pascalstraße 22 | D - 52076 Aachen
Phone: +49 2408 1402-0 | Fax: +49 2408 1402-10
Geschäftsführer: Matthias Kaussen
Handelsregistereintrag: Amtsgericht Aachen, HRB 4996

www.karo-electronics.de | info at karo-electronics.de
___________________________________________________________