On Wed, Aug 1, 2012 at 5:22 PM, Johannes Stezenbach <j...@sig21.net> wrote:
> I'm currently learning how Linux devicetree support works, > here is one question I couldn't find an answer for. > > I understand that within the devicetree GPIOs are referenced by phandle, > thus the numbers are irrelevant. However, in sysfs the number is > what is used to access the GPIO, e.g. for debugging or > blinkenlight apps. How does this fit together? I think it simply does not fit together. Grant & me has been claiming the GPIO sysfs interface is a bit crazy from time to time. My long-term plan would be to replace it with /dev/gpio/gpioN device nodes per-gpiochip and use ioctl etc to control these beasts instead. However one does not do that overnight, and my life is too busy, and other refactorings also need to happen :-/ Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
