Thanks Jonathan for your mail! 2016-04-10 22:46 GMT+08:00 Jonathan Cameron <jic23@xxxxxxxxxx>: > On 07/04/16 04:51, Yong Li wrote: >> am testing an IIO gyro sensor using kernel 4.4, currently I can use >> the sysfs trigger as a trigger, I can read the data from >> /dev/iio:deviceX after "echo 1 > trigger_now". >> >> >> I want to use a gpio pin for the data trigger. For example, when the >> GPIO pin 62 is low, the data will be ready. >> >> >> How to connect/setup the gpio with the IIO triggers, how can I use the >> iio_trig_interrupt.ko? I found there is new triggers in the >> /sys/bus/iio/devices after I loaded the iio_trig_interrupt.ko. > Hi Yong, > > Unfortunately a means of identifying that a given IRQ (GPIO or otherwise) > is to be used as an iio_trigger is needed. At the moment, that driver > only supports getting this from an IORESOURCE_IRQ in a board file. > > There was a recent thread on device tree bindings for these; > http://marc.info/?l=linux-iio&m=145621588017248&w=2 > > It got a little non obvious from the point of view of what the bindings > should look like and buried under other work. > > Still the patches there will probably get you going. > > Jonathan > >> >> Thanks, >> Yong >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-iio" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> > -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
