--- zzzz-none-000/linux-4.9.279/drivers/usb/host/xhci-hub.c	2021-08-08 06:38:54.000000000 +0000
+++ puma7-atom-6591-750/linux-4.9.279/drivers/usb/host/xhci-hub.c	2023-02-08 11:43:42.000000000 +0000
@@ -27,6 +27,11 @@
 #include "xhci.h"
 #include "xhci-trace.h"
 
+#if defined (CONFIG_AVM_KERNEL)
+/* 20160219 AVM/VGJ USB3 ports switchable */
+extern int usb3port_config;
+#endif
+
 #define	PORT_WAKE_BITS	(PORT_WKOC_E | PORT_WKDISC_E | PORT_WKCONN_E)
 #define	PORT_RWC_BITS	(PORT_CSC | PORT_PEC | PORT_WRC | PORT_OCC | \
 			 PORT_RC | PORT_PLC | PORT_PE)
@@ -1123,7 +1128,22 @@
 			 * However, hub_wq will ignore the roothub events until
 			 * the roothub is registered.
 			 */
+#if defined (CONFIG_AVM_KERNEL)
+			{
+				/* 20170911 AVM/VGJ USB3 ports switchable - only ports 2 and 3 are relevant */
+				const int port_bit = (wIndex < 3) ? wIndex : 0;
+				temp |= PORT_POWER;
+				/* 20180719 AVM/VGJ make sure selected USB3 ports are enabled */
+				if ((hcd->speed == HCD_USB3) && (usb3port_config & port_bit)) {
+					xhci_warn(xhci, "AVM: enable USB3 bus#%d port#%d config=%x temp=%x\n", hcd->self.busnum, wIndex, usb3port_config, temp);
+					xhci_set_link_state(xhci, port_array, wIndex, USB_SS_PORT_LS_RX_DETECT);
+				}
+
+				writel(temp, port_array[wIndex]);
+			}
+#else
 			writel(temp | PORT_POWER, port_array[wIndex]);
+#endif
 
 			temp = readl(port_array[wIndex]);
 			xhci_dbg(xhci, "set port power, actual port %d status  = 0x%x\n", wIndex, temp);