[U-Boot] [PATCH v3 1/7] mx23: Fix pad voltage selection bit

Marek Vasut marex at denx.de
Fri May 3 04:34:11 CEST 2013


Dear Otavio Salvador,

> On Thu, May 2, 2013 at 11:24 PM, Marek Vasut <marex at denx.de> wrote:
> > Dear Fabio Estevam,
> > 
> >> From: Fabio Estevam <fabio.estevam at freescale.com>
> >> 
> >> On mx23 the pad voltage selection bit needs to be always '0', since '1'
> >> is a reserved value.
> >> 
> >> For example:
> >> 
> >> Pin 108, EMI_A06 pin voltage selection:
> >> 0= 1.8V (mDDR) or 2.5V (DDR1);
> >> 1= reserved.
> >> 
> >> Fix the pad voltage definitions for the mx23 case.
> >> 
> >> Signed-off-by: Fabio Estevam <fabio.estevam at freescale.com>
> > 
> > Acked-by: Marek Vasut <marex at denx.de>
> > 
> > but then, should we not just undefine this PAD_3V3 for MX23 altogether so
> > noone is tempted to use it?
> 
> I think for code readability it'd be good to have it in place. It
> makes it more obvious for people looking at code.

I can already see the people wondering why that piece has no effect ...

Best regards,
Marek Vasut


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