[U-Boot] [Drivers PATCH 06/19] usbh/ehci: Increase timeout for enumeration

[Vipin Kumar]

Few pen drives take longer than usual for enumeration. The u-boot unlike linux
does not depend on interrupts and works in polling and timeout mode.

This patch increases this timeout to increase the set of usb sticks that can be
enumerated by u-boot

Signed-off-by: Vipin Kumar <vipin.kumar at st.com>
---
 common/usb_hub.c | 27 ++++++++++++++++++++++-----
 1 file changed, 22 insertions(+), 5 deletions(-)

diff --git a/common/usb_hub.c b/common/usb_hub.c
index e4a1201..24de9b7 100644
--- a/common/usb_hub.c
+++ b/common/usb_hub.c
@@ -393,17 +393,34 @@ static int usb_hub_configure(struct usb_device *dev)
 		"" : "no ");
 	usb_hub_power_on(hub);
 
+	mdelay(1500);
+
 	for (i = 0; i < dev->maxchild; i++) {
 		ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1);
 		unsigned short portstatus, portchange;
+		int ret;
+		ulong start = get_timer(0);
+
+		do {
+			ret = usb_get_port_status(dev, i + 1, portsts);
+			if (ret < 0) {
+				USB_HUB_PRINTF("get_port_status failed\n");
+				break;
+			}
+
+			portstatus = le16_to_cpu(portsts->wPortStatus);
+			portchange = le16_to_cpu(portsts->wPortChange);
+
+			if ((portchange & USB_PORT_STAT_C_CONNECTION) &&
+				(portstatus & USB_PORT_STAT_CONNECTION))
+				break;
 
-		if (usb_get_port_status(dev, i + 1, portsts) < 0) {
-			USB_HUB_PRINTF("get_port_status failed\n");
+			mdelay(100);
+		} while (get_timer(start) < CONFIG_SYS_HZ * 10);
+
+		if (ret < 0)
 			continue;
-		}
 
-		portstatus = le16_to_cpu(portsts->wPortStatus);
-		portchange = le16_to_cpu(portsts->wPortChange);
 		USB_HUB_PRINTF("Port %d Status %X Change %X\n",
 				i + 1, portstatus, portchange);
 
-- 
1.7.11.4