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-rw-r--r--target/linux/ar71xx/patches-4.4/902-at803x-add-reset-gpio-pdata.patch68
1 files changed, 68 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-4.4/902-at803x-add-reset-gpio-pdata.patch b/target/linux/ar71xx/patches-4.4/902-at803x-add-reset-gpio-pdata.patch
new file mode 100644
index 0000000000..2244f882e7
--- /dev/null
+++ b/target/linux/ar71xx/patches-4.4/902-at803x-add-reset-gpio-pdata.patch
@@ -0,0 +1,68 @@
+Add support for configuring AT803x GPIO reset via platform data.
+This is necessary, because ath79 is not converted to device tree yet.
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+
+--- a/include/linux/platform_data/phy-at803x.h
++++ b/include/linux/platform_data/phy-at803x.h
+@@ -6,6 +6,8 @@ struct at803x_platform_data {
+ int enable_rgmii_tx_delay:1;
+ int enable_rgmii_rx_delay:1;
+ int fixup_rgmii_tx_delay:1;
++ int has_reset_gpio:1;
++ int reset_gpio;
+ };
+
+ #endif /* _PHY_AT803X_PDATA_H */
+--- a/drivers/net/phy/at803x.c
++++ b/drivers/net/phy/at803x.c
+@@ -243,6 +243,7 @@ static int at803x_resume(struct phy_devi
+
+ static int at803x_probe(struct phy_device *phydev)
+ {
++ struct at803x_platform_data *pdata;
+ struct device *dev = &phydev->dev;
+ struct at803x_priv *priv;
+ struct gpio_desc *gpiod_reset;
+@@ -255,6 +256,12 @@ static int at803x_probe(struct phy_devic
+ phydev->drv->phy_id != ATH8032_PHY_ID)
+ goto does_not_require_reset_workaround;
+
++ pdata = dev_get_platdata(&phydev->dev);
++ if (pdata && pdata->has_reset_gpio) {
++ devm_gpio_request(dev, pdata->reset_gpio, "reset");
++ gpio_direction_output(pdata->reset_gpio, 1);
++ }
++
+ gpiod_reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(gpiod_reset))
+ return PTR_ERR(gpiod_reset);
+@@ -377,15 +384,23 @@ static void at803x_link_change_notify(st
+ * cannot recover from by software.
+ */
+ if (phydev->state == PHY_NOLINK) {
+- if (priv->gpiod_reset && !priv->phy_reset) {
++ if ((priv->gpiod_reset || pdata->has_reset_gpio) &&
++ !priv->phy_reset) {
+ struct at803x_context context;
+
+ at803x_context_save(phydev, &context);
+
+- gpiod_set_value(priv->gpiod_reset, 1);
+- msleep(1);
+- gpiod_set_value(priv->gpiod_reset, 0);
+- msleep(1);
++ if (pdata->has_reset_gpio) {
++ gpio_set_value_cansleep(pdata->reset_gpio, 0);
++ msleep(1);
++ gpio_set_value_cansleep(pdata->reset_gpio, 1);
++ msleep(1);
++ } else {
++ gpiod_set_value(priv->gpiod_reset, 1);
++ msleep(1);
++ gpiod_set_value(priv->gpiod_reset, 0);
++ msleep(1);
++ }
+
+ at803x_context_restore(phydev, &context);
+