target/linux/layerscape/patches-5.4/701-net-0294-staging-fsl_ppfe-eth-Disable-autonegotiation-for-2.5.patch

   1 From caae8a691922c3702fcb813f5d794f311c0609c6 Mon Sep 17 00:00:00 2001
   2 From: Bhaskar Upadhaya <Bhaskar.Upadhaya@nxp.com>
   3 Date: Wed, 29 Nov 2017 12:21:43 +0530
   4 Subject: [PATCH] staging: fsl_ppfe/eth: Disable autonegotiation for 2.5G SGMII
   5
   6 PCS initialization sequence for 2.5G SGMII interface governs
   7 auto negotiation to be in disabled mode
   8
   9 Signed-off-by: Bhaskar Upadhaya <Bhaskar.Upadhaya@nxp.com>
  10 ---
  11  drivers/staging/fsl_ppfe/pfe_eth.c | 7 +++++--
  12  1 file changed, 5 insertions(+), 2 deletions(-)
  13
  14 --- a/drivers/staging/fsl_ppfe/pfe_eth.c
  15 +++ b/drivers/staging/fsl_ppfe/pfe_eth.c
  16 @@ -1174,6 +1174,7 @@ static void ls1012a_configure_serdes(str
  17         struct pfe_eth_priv_s *priv = pfe->eth.eth_priv[0];
  18         int sgmii_2500 = 0;
  19         struct mii_bus *bus = priv->mii_bus;
  20 +       u16 value = 0;
  21
  22         if (priv->einfo->mii_config == PHY_INTERFACE_MODE_2500SGMII)
  23                 sgmii_2500 = 1;
  24 @@ -1191,14 +1192,16 @@ static void ls1012a_configure_serdes(str
  25                 pfe_eth_mdio_write(bus, 0, 0x4, 0x4001);
  26                 pfe_eth_mdio_write(bus, 0, 0x12, 0xa120);
  27                 pfe_eth_mdio_write(bus, 0, 0x13, 0x7);
  28 +               /* Autonegotiation need to be disabled for 2.5G SGMII mode*/
  29 +               value = 0x0140;
  30 +               pfe_eth_mdio_write(bus, 0, 0x0, value);
  31         } else {
  32                 pfe_eth_mdio_write(bus, 0, 0x14, 0xb);
  33                 pfe_eth_mdio_write(bus, 0, 0x4, 0x1a1);
  34                 pfe_eth_mdio_write(bus, 0, 0x12, 0x400);
  35                 pfe_eth_mdio_write(bus, 0, 0x13, 0x0);
  36 +               pfe_eth_mdio_write(bus, 0, 0x0, 0x1140);
  37         }
  38 -
  39 -       pfe_eth_mdio_write(bus, 0, 0x0, 0x1140);
  40  }
  41
  42  /*