usb: phy: phy-generic: Fix reset behaviour on legacy boot

commit 762982db33b23029e98c844611e2e8beeb75bc0d upstream.

The gpio-desc migration done in v4.0 caused a regression
with legacy boots due to reversed reset logic.
e.g. omap3-beagle USB host breaks on legacy boot.

Request the reset GPIO with GPIOF_ACTIVE_LOW flag so that
it matches the driver logic and pin behaviour.

Fixes: e9f2cefb0cdc ("usb: phy: generic: migrate to gpio_desc")
Tested-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/phy/phy-generic.c b/drivers/usb/phy/phy-generic.c
index deee68eafb72a70c8c504d659e8fc573cc270d09..0cd85f2ccddd3d31608820517dfcb849031f65d3 100644 (file)
--- a/drivers/usb/phy/phy-generic.c
+++ b/drivers/usb/phy/phy-generic.c
@@ -230,7 +230,8 @@ int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_generic *nop,
                clk_rate = pdata->clk_rate;
                needs_vcc = pdata->needs_vcc;
                if (gpio_is_valid(pdata->gpio_reset)) {
-                       err = devm_gpio_request_one(dev, pdata->gpio_reset, 0,
+                       err = devm_gpio_request_one(dev, pdata->gpio_reset,
+                                                   GPIOF_ACTIVE_LOW,
                                                    dev_name(dev));
                        if (!err)
                                nop->gpiod_reset =