I see in code examples that the device tree overlay settings are shown as:
# Uncomment one of these lines to enable an audio interface
#dtoverlay=hifiberry-dac
#dtoverlay=hifiberry-dacplus
#dtoverlay=hifiberry-digi
#dtoverlay=hifiberry-amp
#dtoverlay=iqaudio-dac
#dtoverlay=iqaudio-dacplus
dtparam=audio=on
When I look at my config.txt I see
# Uncomment one of these lines to enable an audio interface
#device_tree_overlay=hifiberry-dac
#device_tree_overlay=hifiberry-dacplus
#device_tree_overlay=hifiberry-digi
#device_tree_overlay=hifiberry-amp
#device_tree_overlay=iqaudio-dac
device_tree_overlay=iqaudio-dacplus
It's the same for dtparam, where I have device_tree_param
Is this just a shortened syntax versus full syntax?
Just curious!