target/linux/ath79/patches-5.10/425-at803x-allow-sgmii-aneg-override.patch

   1 From: David Bauer <mail@david-bauer.net>
   2 Subject: [PATCH] ath79: allow to override AR8033 SGMII aneg status
   3
   4 In order to make the QCA955x SGMII workaround work, the unsuccessful
   5 SGMII autonegotiation on the AR8033 should not block the PHY
   6 state-machine.
   7
   8 Otherwise, the ag71xx driver never becomes aware of the copper-side
   9 link-establishment and the workaround is never executed.
  10
  11 Submitted-by: David Bauer <mail@david-bauer.net>
  12 Submitted-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
  13 ---
  14  drivers/net/phy/at803x.c-override.patch          | 7 +++++++
  15  1 files changed, 7 insertions(+)
  16
  17 --- a/drivers/net/phy/at803x.c
  18 +++ b/drivers/net/phy/at803x.c
  19 @@ -959,6 +959,13 @@ static int at803x_aneg_done(struct phy_d
  20         if (!(phy_read(phydev, AT803X_PSSR) & AT803X_PSSR_MR_AN_COMPLETE)) {
  21                 phydev_warn(phydev, "803x_aneg_done: SGMII link is not ok\n");
  22                 aneg_done = 0;
  23 +#ifdef CONFIG_OF_MDIO
  24 +               if (phydev->mdio.dev.of_node &&
  25 +                               of_property_read_bool(phydev->mdio.dev.of_node,
  26 +                               "at803x-override-sgmii-link-check")) {
  27 +                       aneg_done = 1;
  28 +               }
  29 +#endif
  30         }
  31         /* switch back to copper page */
  32         phy_write(phydev, AT803X_REG_CHIP_CONFIG, ccr | AT803X_BT_BX_REG_SEL);