On Thu, Oct 29, 2020 at 1:40 PM Mark A. Yoder <[email protected]> wrote: > > I've just recently discovered I have access to lots of 16x2 LCD displays. > > I see there are many examples of interfacing it to a Linux machine, but most > are via user space. I'm looking for kernel space examples. modinfo hd44780 > shows a driver is there, but how do I use it. > > Is there a device tree for the hd44780 for a parallel interface?
There is a relatively new driver for this, i just don't know of anyone who's worked out a device tree for it.. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/auxdisplay/hd44780.c Here is one example i found, just need to list the gpio's.. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm/boot/dts/armada-370-netgear-rn104.dts?h=v5.10-rc1#n146 Regards, -- Robert Nelson https://rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CAOCHtYjQ07y1WZjVd4HEZHm3XJKATv6MyeCTG%2BxNAf_gUC-VbA%40mail.gmail.com.
