- * So, if there is not a cached version of it (from a previous open),
- * we ask for device info at open time,
+ * NOTE: am7xxx_get_device_info() will fetch the actual device info
+ * from the device only the very first time it's called for a given
+ * device, otherwise, it'll return a cached version of the device info
+ * (from a previous call to am7xxx_open_device(), for instance).