ntp: Enable the kernel PPS driver and use it on the ODU

recipes-bsp/ntp/files/sysmocom-odu/ntp.conf

@@ -2,18 +2,29 @@
 # The driftfile must remain in a place specific to this
 # machine - it records the machine specific clock error
 driftfile /etc/ntp.drift
+
 # This obtains a random server which will be close
 # (in IP terms) to the machine.  Add other servers
 # as required, or change this.
 server pool.ntp.org
+
 # Using local hardware clock as fallback
 # Disable this when using ntpd -q -g -x as ntpdate or it will sync to itself
 server 127.127.1.0
 fudge 127.127.1.0 stratum 14
 
+# GPSD interface for NMEA based time
 server 127.127.28.0
 fudge 127.127.28.0 refid GPS
 
+# PPS interface to kernel
+server 127.127.22.0
+fudge 127.127.22.0 refid PPS
+
 # Defining a default security setting, allowing queries but declining
 # pretty much everything else
 restrict default limited kod nomodify notrap nopeer
+
+# Be more permissive with localhost
+restrict 127.0.0.1
+restrict ::1

recipes-bsp/ntp/ntp_4.2.8.bb

@@ -36,6 +36,7 @@ EXTRA_OECONF += "--with-net-snmp-config=no \
                  ac_cv_header_readline_history_h=no \
                  --with-yielding_select=yes \
                  --with-locfile=redhat \
+		 --enable-ATOM \
                  "
 CFLAGS_append = " -DPTYS_ARE_GETPT -DPTYS_ARE_SEARCHED"