Achim Gratz via devel writes:
> That image is officially available now.  It will be some time before
> I'll get around to test it most likely, though.

I've just set up a second TinkerBoard using this image.  Works well
including the gpio-pps overlay, which has to be added to
/boot/hw_intf.conf to get activated.

The full installation sequence (minus my own mistakes along the way):

--8<---------------cut here---------------start------------->8---
*** Linaro 2.0.4
**** Prepare SD card
     - cd /mnt/root # root partion
       + vi etc/shadow   # change password hash (copy from other machine or use 
passwd -R /mnt/root pi)
       + vi etc/hostname # change hostname
       + vi etc/hosts    # change hostname
     - cd /mnt/boot
       + nothing to do yet apparently
**** Further Steps
     - uname -a # Linux tinkerboard2 4.4.71+ #1 SMP Wed Nov 15 14:31:48 CST 
2017 armv7l GNU/Linux
     - sudo apt-get update && sudo apt-get -us dist-upgrade && sudo apt-get -u 
dist-upgrade && sudo apt-get --purge autoremove
     - sudo dpkg-reconfigure tzdata locales # set up TZ and locale information, 
ensure availability of at least one UTF-8 locale
     - echo LC_MESSAGES=POSIX | sudo tee -a /etc/default/locale
     - sudo apt-get install ntp emacs cpufrequtils pps-tools setserial minicom 
picocom python-serial rsync git ethtool
     - sudo systemctl stop systemd-timesyncd && sudo systemctl disable 
systemd-timesyncd # stop and disable timesyncd (SNTP client)
     - sudo apt-mark hold ntp # install ntpsec over existing scaffolding
     - sudo systemctl set-default multi-user.target
     - sudo apt-get purge anacron
     - sudo vi /etc/default/cpufrequtils # set governor userspace @ fixed 
frequency 1.2GHz
     - sudo reboot
**** NTPsec development
     - git clone https://gitlab.com/NTPsec/ntpsec.git
     - cd ntpsec && sudo ./buildprep --doc --ntpviz # this is bullshit…
     - ./waf configure --refclock=nmea,pps,local,generic,shm --prefix=/usr 
--enable-early-droproot
     - sudo vi 
/etc/udev/rules.d/{77-dcf77,66-ublox6,88-ublox8,99-navspark}.rules
     - echo intf:dtoverlay=pps-gpio | sudo tee -a /boot/hw_intf.conf
     - sudo vi /etc/cron.daily/ntp # increase retention period
     - sudo vi /etc/ntp.conf
     - echo "1 SHA1" $(base64 /dev/urandom | tr -d '+/=' | head -c 20) | sudo 
tee /etc/ntp.keys && sudo chmod 600 /etc/ntp.keys
     - sudo reboot
     - sudo ethtool -C eth0 rx-usecs 69
     - sudo rm /run/ntp.conf.dhcp /etc/dhcp/dhclient-exit-hooks.d/ntp
     - sudo mkdir -p /var/log/ntpstat && sudo chown ntp.ntp /var/log/ntpstat
     - rm wafhelpers/.autorevision-cache ; ./waf build && sudo ./waf install && 
sudo systemctl restart ntp && watch -n 5 'ntpq -W92 -c rv -c peers -c "cv &1"'
--8<---------------cut here---------------end--------------->8---


Regards,
Achim.
-- 
+<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+

SD adaptation for Waldorf microQ V2.22R2:
http://Synth.Stromeko.net/Downloads.html#WaldorfSDada

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