[U-Boot] [PATCH 1/2] efikamx: Configure the pins as GPIOs prior to using gpio_get_value.
Mike Frysinger
vapier at gentoo.org
Wed Nov 23 20:44:31 CET 2011
On Wednesday 23 November 2011 03:19:48 Stefano Babic wrote:
> On 22/11/2011 22:07, Mike Frysinger wrote:
> > if it's different physical pins, then perhaps it should be
> > different GPIO numbers ?
>
> No, they are not. Depending on the "daisy chain" functionality and
> based on different alternate function, a single GPIO can be routed to
> different physical pins.
the GPIO # can represent the AF as well as the GPIO itself. this is what bit
shifts and masks are good at.
there's no requirement that the GPIO #'s be contiguous, or have a specific
range.
-mike
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