From: Hector Martin <marcan@marcan.st>
Date: Sun, 29 Oct 2023 07:09:09 +0000 (+0900)
Subject: usb: hub: Add missing reset recovery delay
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=b5999f8f6ca89223b70ec3038fcfe9dbb6c67475;p=u-boot.git

usb: hub: Add missing reset recovery delay

Some devices like YubiKeys need more time before SET_ADDRESS. The spec
says we need to wait 10ms.

Signed-off-by: Hector Martin <marcan@marcan.st>
Reviewed-by: Marek Vasut <marex@denx.de>
---

diff --git a/common/usb_hub.c b/common/usb_hub.c
index 85c0822d8b..70279f301d 100644
--- a/common/usb_hub.c
+++ b/common/usb_hub.c
@@ -395,6 +395,13 @@ int usb_hub_port_connect_change(struct usb_device *dev, int port)
 		break;
 	}
 
+	/*
+	 * USB 2.0 7.1.7.5: devices must be able to accept a SetAddress()
+	 * request (refer to Section 11.24.2 and Section 9.4 respectively)
+	 * after the reset recovery time 10 ms
+	 */
+	mdelay(10);
+
 #if CONFIG_IS_ENABLED(DM_USB)
 	struct udevice *child;