usb: dwc3: core: Allow phy suspend during init for role_switch_reset_quirk

Disabling phy suspend during init breaks USB3 on Apple silicon systems.
The pipehandler lock in atc-phy will not be acked breaking USB3 but not
always USB2 and produces following log message
| phy-apple-atc b03000000.phy: pipehandler lock not acked, this type-c port is probably dead until the next reboot.

Fixes: 6d73572 ("usb: dwc3: core: Prevent phy suspend during init")
Signed-off-by: Janne Grunau <j@jannau.net>

Author: jannau

drivers/usb/dwc3/core.c

@@ -1392,6 +1392,9 @@ static int dwc3_core_init(struct dwc3 *dwc)
 	if (ret)
 		goto err_exit_phy;
 
+	if (dwc->role_switch_reset_quirk)
+		dwc3_enable_susphy(dwc, true);
+
 	dwc3_core_setup_global_control(dwc);
 	dwc3_core_num_eps(dwc);
 

drivers/usb/dwc3/host.c

@@ -223,7 +223,8 @@ void dwc3_host_exit(struct dwc3 *dwc)
 	if (dwc->sys_wakeup)
 		device_init_wakeup(&dwc->xhci->dev, false);
 
-	dwc3_enable_susphy(dwc, false);
+	if (!dwc->role_switch_reset_quirk)
+		dwc3_enable_susphy(dwc, false);
 	platform_device_unregister(dwc->xhci);
 	dwc->xhci = NULL;
 }