[PATCH] at803x: fix reset handling
From: Sergei Shtylyov <hidden>
Date: 2016-03-22 21:44:44
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 <redacted>
---
The patch is against DaveM's 'net.git' repo.
drivers/net/phy/at803x.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
Index: net/drivers/net/phy/at803x.c
===================================================================--- net.orig/drivers/net/phy/at803x.c
+++ net/drivers/net/phy/at803x.c@@ -277,7 +277,7 @@ static int at803x_probe(struct phy_devic 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(st 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);