diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 81ae9f1..48bc121 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -948,7 +948,8 @@
 		usb_set_port_feature(dev, i + 1, USB_PORT_FEAT_POWER);
 		USB_HUB_PRINTF("port %d returns %lX\n", i + 1, dev->status);
 	}
-	mdelay(20);
+	/* power on is encoded in 2ms increments -> times 2 for the actual delay */
+	mdelay(hub->desc.bPwrOn2PwrGood*2);
 }
 
 #define MAX_TRIES 5