target/linux/layerscape/patches-5.4/701-net-0332-drivers-net-phy-aquantia-fix-system-side-protocol-mi.patch

   1 From 5f008cb22f60da4e10375f22266c1a4e20b1252e Mon Sep 17 00:00:00 2001
   2 From: Alex Marginean <alexandru.marginean@nxp.com>
   3 Date: Fri, 20 Sep 2019 18:22:52 +0300
   4 Subject: [PATCH] drivers: net: phy: aquantia: fix system side protocol
   5  misconfiguration
   6
   7 Do not set up protocols for speeds that are not supported by FW.  Enabling
   8 these protocols leads to link issues on system side.
   9
  10 Signed-off-by: Alex Marginean <alexandru.marginean@nxp.com>
  11 ---
  12  drivers/net/phy/aquantia_main.c | 8 +++++++-
  13  1 file changed, 7 insertions(+), 1 deletion(-)
  14
  15 --- a/drivers/net/phy/aquantia_main.c
  16 +++ b/drivers/net/phy/aquantia_main.c
  17 @@ -299,10 +299,16 @@ static int aqr_config_aneg_set_prot(stru
  18         phy_write_mmd(phydev, MDIO_MMD_VEND1, AQUANTIA_VND1_GSTART_RATE,
  19                       aquantia_syscfg[if_type].start_rate);
  20
  21 -       for (i = 0; i <= aquantia_syscfg[if_type].cnt; i++)
  22 +       for (i = 0; i <= aquantia_syscfg[if_type].cnt; i++) {
  23 +               u16 reg = phy_read_mmd(phydev, MDIO_MMD_VEND1,
  24 +                                      AQUANTIA_VND1_GSYSCFG_BASE + i);
  25 +               if (!reg)
  26 +                       continue;
  27 +
  28                 phy_write_mmd(phydev, MDIO_MMD_VEND1,
  29                               AQUANTIA_VND1_GSYSCFG_BASE + i,
  30                               aquantia_syscfg[if_type].syscfg);
  31 +       }
  32
  33         /* wake PHY back up */
  34         phy_write_mmd(phydev, MDIO_MMD_VEND1, AQUANTIA_VND1_GLOBAL_SC, 0);