Add control for the PHC inside the ADIN1110/2111. Device contains a syntonized counter driven by a 120 MHz clock with 8 ns resolution. Time is stored in two registers: a 32bit seconds register and a 32bit nanoseconds register. For adjusting the clock timing, device uses an addend register. Can generate an output signal on the TS_TIMER pin. For reading the timestamp the current tiem is saved by setting the TS_CAPT pin via gpio in order to snapshot both seconds and nanoseconds in different registers that the live ones. Allow use of hardware RX/TX timestamping. RX frames are automatically timestamped by the device at hardware level when the feature is enabled. Time of day is the one used by the MAC device. When sending a TX frame to the MAC device, driver needs to send a custom header ahead of the ethernet one where it specifies where the MAC device should store the timestamp after the frame has successfully been sent on the MII line. It has 3 timestamp slots that can be read afterwards. Host will be notified by the TX_RDY IRQ. root@analog:~# ethtool -T eth1 Time stamping parameters for eth1: Capabilities: hardware-transmit software-transmit hardware-receive software-receive software-system-clock hardware-raw-clock PTP Hardware Clock: 0 Hardware Transmit Timestamp Modes: off on Hardware Receive Filter Modes: none all root@analog:~# sudo phc2sys -s eth1 -c CLOCK_REALTIME -O 0 -m phc2sys[140.318]: CLOCK_REALTIME phc offset 109350 s0 freq +0 delay 0 phc2sys[141.319]: CLOCK_REALTIME phc offset 124742 s1 freq +15385 delay 0 phc2sys[142.319]: CLOCK_REALTIME phc offset -159 s2 freq +15226 delay 0 phc2sys[143.319]: CLOCK_REALTIME phc offset 55 s2 freq +15392 delay 0 phc2sys[144.320]: CLOCK_REALTIME phc offset -101 s2 freq +15252 delay 0 phc2sys[145.320]: CLOCK_REALTIME phc offset -82 s2 freq +15241 delay 0 root@analog:~# ptp4l -m -f /etc/ptp_slave.conf ptp4l[1188.692]: port 1: new foreign master 00800f.fffe.950400-1 ptp4l[1192.329]: selected best master clock 00800f.fffe.950400 ptp4l[1192.329]: foreign master not using PTP timescale ptp4l[1192.329]: port 1: LISTENING to UNCALIBRATED on RS_SLAVE ptp4l[1194.129]: master offset 29379149 s0 freq -297035 path delay -810558 ptp4l[1195.929]: master offset 32040450 s1 freq +512000 path delay -810558 ptp4l[1198.058]: master offset 1608389 s2 freq +512000 path delay -810558 ptp4l[1198.058]: port 1: UNCALIBRATED to SLAVE on MASTER_CLOCK_SELECTED ptp4l[1199.529]: clockcheck: clock jumped forward or running faster than expected! ptp4l[1199.529]: master offset 2419241 s0 freq +512000 path delay -810558 ptp4l[1199.529]: port 1: SLAVE to UNCALIBRATED on SYNCHRONIZATION_FAULT ptp4l[1201.329]: master offset 2004645 s0 freq +512000 path delay -810558 ptp4l[1203.130]: master offset 1618970 s1 freq +319234 path delay -810558 ptp4l[1204.930]: master offset -1098742 s2 freq -230137 path delay -810558 ptp4l[1204.930]: port 1: UNCALIBRATED to SLAVE on MASTER_CLOCK_SELECTED ptp4l[1206.730]: master offset -1689657 s2 freq -512000 path delay -810558 ptp4l[1208.530]: master offset -1692389 s2 freq -512000 path delay -345770 ptp4l[1210.330]: master offset -404021 s2 freq -47588 path delay -166813 ptp4l[1212.130]: master offset 1098174 s2 freq +512000 path delay -104916 ptp4l[1214.061]: master offset 1579741 s2 freq +512000 path delay -60321 ptp4l[1215.730]: master offset 1180121 s2 freq +512000 path delay -60321 ptp4l[1217.531]: master offset -345392 s2 freq -78876 path delay -43020 Above ptp4l run was not the best as I do not have access (to my knowledge) to an accurate PTP grandmaster. Foreign master here is just my laptop (with only SW timestamping capabilities) with the ptp4l service runnning and NTP disabled. Alexandru Tachici (3): net: ethernet: adi: adin1110: add PTP clock support net: ethernet: adi: adin1110: add timestamping support dt-bindings: net: adin1110: Document ts-capt pin Changelog v1 -> v2: - added phylib locking when writing to the integrated PHY registers in adin2111_enable_ts_timer() and adin2111_enable_extts() - instead of ktime_get_fast_timestamps() used ktime_get_mono_fast_ns() and ktime_get_real_fast_ns() as I only need the real and mono part. The device part is added from the MAC-PHY. - in adjfine() use the new adjust_by_scaled_ppm() helper instead of writing the implementation Alexandru Tachici (3): net: ethernet: adi: adin1110: add PTP clock support net: ethernet: adi: adin1110: add timestamping support dt-bindings: net: adin1110: Document ts-capt pin .../devicetree/bindings/net/adi,adin1110.yaml | 7 + drivers/net/ethernet/adi/adin1110.c | 824 +++++++++++++++++- 2 files changed, 821 insertions(+), 10 deletions(-) -- 2.34.1
