On Sat, Aug 29, 2015 at 5:09 AM, Alexandre Courbot <gnurou@xxxxxxxxx> wrote: > If I properly understood what Chris wants, he may want to have a look > at the following works: > > - GPIO hogging mechanism to configure a GPIO using the device tree - > not sure if you can also export at that time? > - Markus' ongoing work on GPIO naming: > http://www.spinics.net/lists/linux-gpio/msg07844.html > - Device tree overlays, to separate the configuration of GPIOs for > user-space use (which is arguably specific to one's use case) from the > rest of the board's definition > > With these 3 works I think Chris' needs would be fulfilled, at least > as far as GPIOs are concerned. Thanks for the pointers, Alexandre. I think that these are right down the line of what I think is required. Much of the work seems already done. As you mention, though, exporting doesn't seem to be supported yet. I would like to see the addition of exporting to the GPIO hogging mechanism: 1. A boolean to indicate the exporting the GPIO 2. A boolean to indicate whether the GPIO can be reconfigured (i.e. direction-may-change) For the regulator case, it looks like a hogging mechanism might be appropriate. -- 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
