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| author | Tan Tee Min <tee.min.tan@intel.com> | 2021-03-23 19:07:34 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-03-24 15:12:36 -0700 |
| commit | 341f67e424e572bfc034daa534c6fa667533e6a4 (patch) | |
| tree | 9eb068488d74e90163afebaad00ff84946dbfd18 /drivers/accessibility | |
| parent | bef32aa8e412b2495503134a3c02139151b3ebfc (diff) | |
| download | linux-stable-341f67e424e572bfc034daa534c6fa667533e6a4.tar.gz linux-stable-341f67e424e572bfc034daa534c6fa667533e6a4.tar.bz2 linux-stable-341f67e424e572bfc034daa534c6fa667533e6a4.zip | |
net: stmmac: Add hardware supported cross-timestamp
Cross timestamping is supported on Integrated Ethernet Controller in
Intel SoC such as EHL and TGL with Always Running Timer.
The hardware cross-timestamp result is made available to
applications through the PTP_SYS_OFFSET_PRECISE ioctl which calls
stmmac_getcrosststamp().
Device time is stored in the MAC Auxiliary register. The 64-bit System
time (ART timestamp) is stored in registers that are only addressable
by using MDIO space.
Signed-off-by: Tan Tee Min <tee.min.tan@intel.com>
Co-developed-by: Wong Vee Khee <vee.khee.wong@linux.intel.com>
Signed-off-by: Wong Vee Khee <vee.khee.wong@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/accessibility')
0 files changed, 0 insertions, 0 deletions