diff options
| author | Jose Abreu <Jose.Abreu@synopsys.com> | 2018-05-31 20:01:27 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-06-04 17:13:16 +0300 |
| commit | 9a8a02c9d46dcd4c663dac39e6518b6bb7ac1631 (patch) | |
| tree | 924a4f7b5eb4eea0a21154e301d85488f8cdf8e0 /drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c | |
| parent | 9db9268fe4b35eb7ed95a03d2c2f4e1a12ca3b9a (diff) | |
| download | linux-9a8a02c9d46dcd4c663dac39e6518b6bb7ac1631.tar.xz | |
net: stmmac: Add Flexible PPS support
This adds support for Flexible PPS output (which is equivalent
to per_out output of PTP subsystem).
Tested using an oscilloscope and the following commands:
1) Start PTP4L:
# ptp4l -A -4 -H -m -i eth0 &
2) Set Flexible PPS frequency:
# echo <idx> <ts> <tns> <ps> <pns> > /sys/class/ptp/ptpX/period
Where, ts/tns is start time and ps/pns is period time, and ptpX is ptp
of eth0.
Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: Vitor Soares <soares@synopsys.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c index bf8e5a16f11c..d37f17ca62fe 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c @@ -373,6 +373,8 @@ static void dwmac4_get_hw_feature(void __iomem *ioaddr, ((hw_cap & GMAC_HW_FEAT_RXQCNT) >> 0) + 1; dma_cap->number_tx_queues = ((hw_cap & GMAC_HW_FEAT_TXQCNT) >> 6) + 1; + /* PPS output */ + dma_cap->pps_out_num = (hw_cap & GMAC_HW_FEAT_PPSOUTNUM) >> 24; /* IEEE 1588-2002 */ dma_cap->time_stamp = 0; |