diff options
| -rw-r--r-- | Documentation/devicetree/bindings/net/phy.txt | 3 | ||||
| -rw-r--r-- | drivers/net/phy/phy_device.c | 8 |
2 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/phy.txt b/Documentation/devicetree/bindings/net/phy.txt index bc1c3c8..c00a9a8 100644 --- a/Documentation/devicetree/bindings/net/phy.txt +++ b/Documentation/devicetree/bindings/net/phy.txt @@ -35,6 +35,8 @@ Optional Properties: - broken-turn-around: If set, indicates the PHY device does not correctly release the turn around line low at the end of a MDIO transaction. +- reset-gpios: Reference to a GPIO used to reset the phy. + Example: ethernet-phy@0 { @@ -42,4 +44,5 @@ ethernet-phy@0 { interrupt-parent = <40000>; interrupts = <35 1>; reg = <0>; + reset-gpios = <&gpio1 17 GPIO_ACTIVE_LOW>; }; diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index e977ba9..307f72a 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -34,6 +34,7 @@ #include <linux/io.h> #include <linux/uaccess.h> #include <linux/of.h> +#include <linux/gpio/consumer.h> #include <asm/irq.h> @@ -1570,9 +1571,16 @@ static int phy_probe(struct device *dev) struct device_driver *drv = phydev->mdio.dev.driver; struct phy_driver *phydrv = to_phy_driver(drv); int err = 0; + struct gpio_descs *reset_gpios; phydev->drv = phydrv; + /* take phy out of reset */ + reset_gpios = devm_gpiod_get_array_optional(dev, "reset", + GPIOD_OUT_LOW); + if (IS_ERR(reset_gpios)) + return PTR_ERR(reset_gpios); + /* Disable the interrupt if the PHY doesn't support it * but the interrupt is still a valid one */ |