On Thursday 24 July 2014 10:12 AM, Linus Walleij wrote: > On Wed, Jul 23, 2014 at 5:25 PM, Santosh Shilimkar > <santosh.shilimkar@xxxxxx> wrote: > >> I will try to answer this. This IP is indeed a GPIO block >> but the IO's are used just OUTPUT lines from Linux >> HOST perspective. These IOs are connected to the DSPs >> as input/IRQ lines. > > So the DSP is another discrete IC, and could be something > different, so this is board-level information? > > I'm really worrying whether this is general purpose or not :-/ > Am not sure I follow you. This IP is completely controlled by Linux OS to generate output signals. How does it matter whether its connected to a peripheral or a discrete IC. For example instead of DSP if I connected these lines to an external PMIC, which considers these as input lines to perform some actions. Isn't that GPIO usecase as per you ? Given that this IP only output functionality is used but that shouldn't matter. We have seen SOCs where GPIOs are just used as input to form a Matrix Keyboard. May be I am missing your point. Regards, Santosh -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
