Am Dienstag, den 13.03.2018, 19:22 +0200 schrieb Mathias Nyman: > My understanding is that Gen XxY notion is only used for symmetric devices > where tx lanes = rx lanes. Only SSIC devices can be asymmetric. > > USB 3.2 spec mentions the (Gen 1x1, 1x2, 2x1 and 2x2) alternatives, nothing more. > Nothing about different lane counts on rx and tx related to Gen XxY. Hi, normally I would say that we should worry about this only when we need to, but an API in sysfs is an exception to that rule. We can avoid pain later if we export lane counts for both directions now in all cases. We should also export all raw data we have. User space can be trusted to get a multiplication right and it is not the kernels job to interpret such data. Regards Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html