usb: misc: usb3503: make sure reset is low for at least 100us

[linux] / drivers / usb / misc / usb3503.c

diff --git a/drivers/usb/misc/usb3503.c b/drivers/usb/misc/usb3503.c
index 465dbf6..f723f7b 100644 (file)
--- a/drivers/usb/misc/usb3503.c
+++ b/drivers/usb/misc/usb3503.c
@@ -279,6 +279,8 @@ static int usb3503_probe(struct usb3503 *hub)
        if (gpio_is_valid(hub->gpio_reset)) {
                err = devm_gpio_request_one(dev, hub->gpio_reset,
                                GPIOF_OUT_INIT_LOW, "usb3503 reset");
+               /* Datasheet defines a hardware reset to be at least 100us */
+               usleep_range(100, 10000);
                if (err) {
                        dev_err(dev,
                                "unable to request GPIO %d as reset pin (%d)\n",