From d57019d1858a6f9b3ca05d76d793466ae428cfa3 Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Wed, 23 Mar 2016 00:44:40 +0300 Subject: [PATCH] at803x: fix reset handling MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The driver of course "knows" that the chip's reset signal is active low, so it drives the GPIO to 0 to reset the PHY and to 1 otherwise; however all this will only work iff the GPIO is specified as active-high in the device tree! I think both the driver and the device trees (if there are any -- I was unable to find them) need to be fixed in this case... Fixes: 13a56b449325 ("net: phy: at803x: Add support for hardware reset") Signed-off-by: Sergei Shtylyov Acked-by: Uwe Kleine-König Signed-off-by: David S. Miller --- drivers/net/phy/at803x.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c index 1e901c7cfaac..d7f03fa4ba8f 100644 --- a/drivers/net/phy/at803x.c +++ b/drivers/net/phy/at803x.c @@ -277,7 +277,7 @@ static int at803x_probe(struct phy_device *phydev) if (!priv) return -ENOMEM; - gpiod_reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH); + gpiod_reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(gpiod_reset)) return PTR_ERR(gpiod_reset); @@ -362,10 +362,10 @@ static void at803x_link_change_notify(struct phy_device *phydev) at803x_context_save(phydev, &context); - 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); -- 2.20.1