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Diffstat (limited to 'target/linux/generic/patches-4.4/738-net-phy-at803x-only-the-AT8030-needs-a-hardware-rese.patch')
-rw-r--r--target/linux/generic/patches-4.4/738-net-phy-at803x-only-the-AT8030-needs-a-hardware-rese.patch77
1 files changed, 77 insertions, 0 deletions
diff --git a/target/linux/generic/patches-4.4/738-net-phy-at803x-only-the-AT8030-needs-a-hardware-rese.patch b/target/linux/generic/patches-4.4/738-net-phy-at803x-only-the-AT8030-needs-a-hardware-rese.patch
new file mode 100644
index 0000000000..c49d53ee1c
--- /dev/null
+++ b/target/linux/generic/patches-4.4/738-net-phy-at803x-only-the-AT8030-needs-a-hardware-rese.patch
@@ -0,0 +1,77 @@
+From: Timur Tabi <timur@codeaurora.org>
+Date: Tue, 26 Apr 2016 12:44:18 -0500
+Subject: [PATCH] net: phy: at803x: only the AT8030 needs a hardware reset on
+ link change
+
+Commit 13a56b44 ("at803x: Add support for hardware reset") added a
+work-around for a hardware bug on the AT8030. However, the work-around
+was being called for all 803x PHYs, even those that don't need it.
+Function at803x_link_change_notify() checks to make sure that it only
+resets the PHY on the 8030, but it makes more sense to not call that
+function at all if it isn't needed.
+
+Signed-off-by: Timur Tabi <timur@codeaurora.org>
+Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+
+--- a/drivers/net/phy/at803x.c
++++ b/drivers/net/phy/at803x.c
+@@ -374,27 +374,25 @@ static void at803x_link_change_notify(st
+ * in the FIFO. In such cases, the FIFO enters an error mode it
+ * cannot recover from by software.
+ */
+- if (phydev->drv->phy_id == ATH8030_PHY_ID) {
+- if (phydev->state == PHY_NOLINK) {
+- if (priv->gpiod_reset && !priv->phy_reset) {
+- struct at803x_context context;
++ if (phydev->state == PHY_NOLINK) {
++ if (priv->gpiod_reset && !priv->phy_reset) {
++ struct at803x_context context;
+
+- at803x_context_save(phydev, &context);
++ at803x_context_save(phydev, &context);
+
+- gpiod_set_value(priv->gpiod_reset, 1);
+- msleep(1);
+- gpiod_set_value(priv->gpiod_reset, 0);
+- msleep(1);
++ gpiod_set_value(priv->gpiod_reset, 1);
++ msleep(1);
++ gpiod_set_value(priv->gpiod_reset, 0);
++ msleep(1);
+
+- at803x_context_restore(phydev, &context);
++ at803x_context_restore(phydev, &context);
+
+- dev_dbg(&phydev->dev, "%s(): phy was reset\n",
+- __func__);
+- priv->phy_reset = true;
+- }
+- } else {
+- priv->phy_reset = false;
++ dev_dbg(&phydev->dev, "%s(): phy was reset\n",
++ __func__);
++ priv->phy_reset = true;
+ }
++ } else {
++ priv->phy_reset = false;
+ }
+ if (pdata && pdata->fixup_rgmii_tx_delay &&
+ phydev->speed != priv->prev_speed) {
+@@ -426,7 +424,6 @@ static struct phy_driver at803x_driver[]
+ .phy_id_mask = AT803X_PHY_ID_MASK,
+ .probe = at803x_probe,
+ .config_init = at803x_config_init,
+- .link_change_notify = at803x_link_change_notify,
+ .set_wol = at803x_set_wol,
+ .get_wol = at803x_get_wol,
+ .suspend = at803x_suspend,
+@@ -468,7 +465,6 @@ static struct phy_driver at803x_driver[]
+ .phy_id_mask = AT803X_PHY_ID_MASK,
+ .probe = at803x_probe,
+ .config_init = at803x_config_init,
+- .link_change_notify = at803x_link_change_notify,
+ .set_wol = at803x_set_wol,
+ .get_wol = at803x_get_wol,
+ .suspend = at803x_suspend,