diff options
Diffstat (limited to 'target/linux/ath79/patches-4.14/902-at803x-add-reset-gpio-pdata.patch')
| -rw-r--r-- | target/linux/ath79/patches-4.14/902-at803x-add-reset-gpio-pdata.patch | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/target/linux/ath79/patches-4.14/902-at803x-add-reset-gpio-pdata.patch b/target/linux/ath79/patches-4.14/902-at803x-add-reset-gpio-pdata.patch new file mode 100644 index 0000000..cb3ed89 --- /dev/null +++ b/target/linux/ath79/patches-4.14/902-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 +@@ -264,6 +264,7 @@ static int at803x_resume(struct phy_devi + + static int at803x_probe(struct phy_device *phydev) + { ++ struct at803x_platform_data *pdata; + struct device *dev = &phydev->mdio.dev; + struct at803x_priv *priv; + struct gpio_desc *gpiod_reset; +@@ -276,6 +277,12 @@ static int at803x_probe(struct phy_devic + phydev->drv->phy_id != ATH8032_PHY_ID) + goto does_not_require_reset_workaround; + ++ pdata = dev_get_platdata(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); +@@ -407,15 +414,23 @@ 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 && 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 && 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); + |