From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Subject: [PATCH] phy: add support for a reset-gpio specification Date: Thu, 12 May 2016 12:00:33 +0200 Message-ID: <1463047233-18091-1-git-send-email-u.kleine-koenig@pengutronix.de> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Florian Fainelli Cc: kernel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org, "Andrew F . Davis" , Nishanth Menon List-Id: devicetree@vger.kernel.org The framework only asserts (for now) that the reset gpio is not active. Signed-off-by: Uwe Kleine-K=C3=B6nig --- Documentation/devicetree/bindings/net/phy.txt | 3 +++ drivers/net/phy/phy_device.c | 8 ++++++++ 2 files changed, 11 insertions(+) diff --git a/Documentation/devicetree/bindings/net/phy.txt b/Documentat= ion/devicetree/bindings/net/phy.txt index bc1c3c8bf8fa..c00a9a894547 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 correc= tly release the turn around line low at the end of a MDIO transaction. =20 +- reset-gpios: Reference to a GPIO used to reset the phy. + Example: =20 ethernet-phy@0 { @@ -42,4 +44,5 @@ ethernet-phy@0 { interrupt-parent =3D <40000>; interrupts =3D <35 1>; reg =3D <0>; + reset-gpios =3D <&gpio1 17 GPIO_ACTIVE_LOW>; }; diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.= c index e551f3a89cfd..7d666ab47271 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -34,6 +34,7 @@ #include #include #include +#include =20 #include =20 @@ -1569,9 +1570,16 @@ static int phy_probe(struct device *dev) struct device_driver *drv =3D phydev->mdio.dev.driver; struct phy_driver *phydrv =3D to_phy_driver(drv); int err =3D 0; + struct gpio_descs *reset_gpios; =20 phydev->drv =3D phydrv; =20 + /* take phy out of reset */ + reset_gpios =3D 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 */ --=20 2.8.0.rc3 -- To unsubscribe from this list: send the line "unsubscribe devicetree" i= n the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html