diff options
| author | Yi Guo <yig@marvell.com> | 2021-09-28 17:01:01 +0530 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-09-28 13:50:37 +0100 |
| commit | 99bbc4ae69b9798b8cd6cbf3ec62a60a17044b1f (patch) | |
| tree | 3ec121303c6910023346d9110e3a4a657477c376 /drivers/net/ethernet/marvell/octeontx2/af/rvu.c | |
| parent | e266f66393963964c867aabee67820222109771c (diff) | |
octeontx2-af: Add external ptp input clock
PTP hardware block can be configured to utilize
the external clock. Also the current ptp timestamp
can be captured when external trigger is applied on
a gpio pin. These features are required in scenarios
like connecting a external timing device to the chip
for time synchronization. The timing device provides
the clock and trigger(PPS signal) to the PTP block.
This patch does the following:
1. configures PTP block to use external clock
frequency and timestamp capture on external event.
2. sends PTP_REQ_EXTTS events to kernel ptp phc susbsytem
with captured timestamps
3. aligns PPS edge to adjusted ptp clock in the ptp device
by setting the PPS_THRESH to the reminder of the last
timestamp value captured by external PPS
Signed-off-by: Yi Guo <yig@marvell.com>
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/marvell/octeontx2/af/rvu.c')
| -rw-r--r-- | drivers/net/ethernet/marvell/octeontx2/af/rvu.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c index 87a32a17d49e..4cb24e91e648 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c @@ -3241,7 +3241,8 @@ static int rvu_probe(struct pci_dev *pdev, const struct pci_device_id *id) mutex_init(&rvu->rswitch.switch_lock); if (rvu->fwdata) - ptp_start(rvu->ptp, rvu->fwdata->sclk); + ptp_start(rvu->ptp, rvu->fwdata->sclk, rvu->fwdata->ptp_ext_clk_rate, + rvu->fwdata->ptp_ext_tstamp); return 0; err_dl: |