On 06/08/2015 05:11 AM, Enrico Weigelt, metux IT consult wrote:
Am 08.06.2015 um 08:01 schrieb Chris Packham: Hi folks, > Sounds like my best bet is to mark the nodes as disabled in the > dts and have my bootloader update them on the way through. In case your bootloader can take that decision (eg. if the device is present at boot time, and the bootloader has the proper probing logic or simply knows the device has to be there), that would be an pretty easy way. But let me add another usecase, which might be a bit more tricky: Let's assume we can plug in some more complex device, which consists of several (pretty standard) subdevices, behind certain bus'es (maybe it's attached via USB, and somewhere behind are some I2C bus'es with regulators, pwm-generators, etc). Let's further assume, we already got some DTS or some piece of memory with an DTB subtree for that device (eg. some simple bulk endpoint that just gives back a bunch of bytes with the DTB). Now, when the device is plugged in, I'd like to get that piece of DTB loaded and the corresponding drivers initialized. And, of course, when it's plugged-out, everything should be shut down cleanly. How could we achieve that ?
Use devicetree overlays. Guenter -- 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
