target/linux/layerscape/patches-5.4/701-net-0103-sdk_dpaa-fix-hardware-timestamp-value.patch

   1 From c96c65930fb5a348d96b88f4edeea1ddf8229c28 Mon Sep 17 00:00:00 2001
   2 From: Yangbo Lu <yangbo.lu@nxp.com>
   3 Date: Thu, 1 Nov 2018 15:34:17 +0800
   4 Subject: [PATCH] sdk_dpaa: fix hardware timestamp value
   5
   6 The hardware timestamp value got didn't need to be multiplied
   7 by nominal frequency since ptp_qoriq driver initialized the
   8 counter to add clock period, not the clock tick.
   9
  10 Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
  11 ---
  12  drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_common.c | 7 ++-----
  13  1 file changed, 2 insertions(+), 5 deletions(-)
  14
  15 --- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_common.c
  16 +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_common.c
  17 @@ -306,7 +306,7 @@ EXPORT_SYMBOL(dpa_fix_features);
  18  u64 dpa_get_timestamp_ns(const struct dpa_priv_s *priv, enum port_type rx_tx,
  19                         const void *data)
  20  {
  21 -       u64 *ts, ns;
  22 +       u64 *ts;
  23
  24         ts = fm_port_get_buffer_time_stamp(priv->mac_dev->port_dev[rx_tx],
  25                                            data);
  26 @@ -316,10 +316,7 @@ u64 dpa_get_timestamp_ns(const struct dp
  27
  28         be64_to_cpus(ts);
  29
  30 -       /* multiple DPA_PTP_NOMINAL_FREQ_PERIOD_NS for case of non power of 2 */
  31 -       ns = *ts << DPA_PTP_NOMINAL_FREQ_PERIOD_SHIFT;
  32 -
  33 -       return ns;
  34 +       return *ts;
  35  }
  36
  37  int dpa_get_ts(const struct dpa_priv_s *priv, enum port_type rx_tx,