example how to develop device trees

diff --git a/README.md b/README.md
index dc2adcc..fff2147 100644 (file)
--- a/README.md
+++ b/README.md
@@ -16,4 +16,13 @@ https://elinux.org/images/d/dc/Elce_2017_dt_bof.pdf
 
 device-tree/ directory contains examples
 
+to use device trees, do something like:
+
+       vi device-tree/gpio-leds.dts
+       armbian-add-overlay device-tree/gpio-led.dts
+       dmesg -w &
+       ./overlay-load.sh /boot/overlay-user/gpio-led.dtbo
+
+
+
 i2c-usersapce/ contains random i2c userspace device drivers