platform/chrome: cros_typec_switch: Check for retimer flag

Not all ports have retimers. Only register a retimer switch if the
"retimer-switch" property is present for that port's mux
device.
Signed-off-by: Prashant Malani <pmalani@chromium.org>
Reviewed-by: Benson Leung <bleung@chromium.org>
Link: https://lore.kernel.org/r/20230104060846.112216-2-pmalani@chromium.org

drivers/platform/chrome/cros_typec_switch.c

@@ -246,14 +246,16 @@ static int cros_typec_register_switches(struct cros_typec_switch_data *sdata)
 		port->port_num = index;
 		sdata->ports[index] = port;
 
-		ret = cros_typec_register_retimer(port, fwnode);
-		if (ret) {
-			dev_err(dev, "Retimer switch register failed\n");
-			goto err_switch;
+		if (fwnode_property_present(fwnode, "retimer-switch")) {
+			ret = cros_typec_register_retimer(port, fwnode);
+			if (ret) {
+				dev_err(dev, "Retimer switch register failed\n");
+				goto err_switch;
+			}
+
+			dev_dbg(dev, "Retimer switch registered for index %llu\n", index);
 		}
 
-		dev_dbg(dev, "Retimer switch registered for index %llu\n", index);
-
 		if (!fwnode_property_present(fwnode, "mode-switch"))
 			continue;