ath79: allow to override AR8033 SGMII aneg status

In order to make the QCA955x SGMII workaround work, the unsuccessful
SGMII autonegotiation on the AR8033 should not block the PHY
state-machine.

Otherwise, the ag71xx driver never becomes aware of the copper-side
link-establishment and the workaround is never executed.

Signed-off-by: David Bauer <mail@david-bauer.net>
[remove one trailing whitespace per file]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

diff --git a/target/linux/ath79/patches-4.14/425-at803x-allow-sgmii-aneg-override.patch b/target/linux/ath79/patches-4.14/425-at803x-allow-sgmii-aneg-override.patch
new file mode 100644 (file)
index 0000000..b0a1942
--- /dev/null
+++ b/target/linux/ath79/patches-4.14/425-at803x-allow-sgmii-aneg-override.patch
@@ -0,0 +1,16 @@
+--- a/drivers/net/phy/at803x.c
++++ b/drivers/net/phy/at803x.c
+@@ -484,6 +484,13 @@ static int at803x_aneg_done(struct phy_d
+       if (!(phy_read(phydev, AT803X_PSSR) & AT803X_PSSR_MR_AN_COMPLETE)) {
+               pr_warn("803x_aneg_done: SGMII link is not ok\n");
+               aneg_done = 0;
++#ifdef CONFIG_OF_MDIO
++              if (phydev->mdio.dev.of_node &&
++                              of_property_read_bool(phydev->mdio.dev.of_node,
++                              "at803x-override-sgmii-link-check")) {
++                      aneg_done = 1;
++              }
++#endif
+       }
+       /* switch back to copper page */
+       phy_write(phydev, AT803X_REG_CHIP_CONFIG, ccr | AT803X_BT_BX_REG_SEL);

diff --git a/target/linux/ath79/patches-4.19/425-at803x-allow-sgmii-aneg-override.patch b/target/linux/ath79/patches-4.19/425-at803x-allow-sgmii-aneg-override.patch
new file mode 100644 (file)
index 0000000..b0a1942
--- /dev/null
+++ b/target/linux/ath79/patches-4.19/425-at803x-allow-sgmii-aneg-override.patch
@@ -0,0 +1,16 @@
+--- a/drivers/net/phy/at803x.c
++++ b/drivers/net/phy/at803x.c
+@@ -484,6 +484,13 @@ static int at803x_aneg_done(struct phy_d
+       if (!(phy_read(phydev, AT803X_PSSR) & AT803X_PSSR_MR_AN_COMPLETE)) {
+               pr_warn("803x_aneg_done: SGMII link is not ok\n");
+               aneg_done = 0;
++#ifdef CONFIG_OF_MDIO
++              if (phydev->mdio.dev.of_node &&
++                              of_property_read_bool(phydev->mdio.dev.of_node,
++                              "at803x-override-sgmii-link-check")) {
++                      aneg_done = 1;
++              }
++#endif
+       }
+       /* switch back to copper page */
+       phy_write(phydev, AT803X_REG_CHIP_CONFIG, ccr | AT803X_BT_BX_REG_SEL);