Hi,

Matthias Kaehlcke [off-list ref] writes:

quoted

quoted

@@ -127,6 +142,50 @@ int dwc3_host_init(struct dwc3 *dwc)
 	return ret;
 }
 
+static void dwc3_set_phy_mode(struct usb_hcd *hcd)
+{
+
+	int i, num_ports;
+	u32 reg;
+	unsigned int ss_phy_mode = 0;
+	struct dwc3 *dwc = dev_get_drvdata(hcd->self.controller->parent);
+	struct xhci_hcd	*xhci_hcd = hcd_to_xhci(hcd);
+
+	dwc->hs_phy_mode = 0;
+
+	reg = readl(&xhci_hcd->cap_regs->hcs_params1);
+	num_ports = HCS_MAX_PORTS(reg);

there's a big assumption here that xhci is still alive. Why isn't this
quirk implemented in xhci-plat itself?

That should work for determining which types of devices are connected to
the PHYs, however IIUC the xhci-plat doesn't know about the PHY topology.
Are you suggesting to move that info into the xhci-plat driver so that it
can set the corresponding PHY modes?

Yes, if xHCI needs to know about PHYs in order to properly configure the
PHYs, so be it :-)

-- 
balbi