From c3963a5563d3baa8e46f6af7926893358a7319e6 Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Mon, 1 Feb 2021 15:03:00 +0300 Subject: [PATCH] thunderbolt: Add clarifying comments about USB4 terms router and adapter USB4 spec talks about routers and adapters whereas Thunderbolt 1-3 talked about CIO (Converged I/O) switches and ports. These are the same thing but might cause confusion so add clarifying comments to struct tb_switch and struct tb_port about the USB4 terms. Signed-off-by: Mika Westerberg --- drivers/thunderbolt/tb.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index 31468de658e4..37679b54808d 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -138,6 +138,8 @@ struct tb_switch_tmu { * * When the switch is being added or removed to the domain (other * switches) you need to have domain lock held. + * + * In USB4 terminology this structure represents a router. */ struct tb_switch { struct device dev; @@ -196,6 +198,9 @@ struct tb_switch { * @in_hopids: Currently allocated input HopIDs * @out_hopids: Currently allocated output HopIDs * @list: Used to link ports to DP resources list + * + * In USB4 terminology this structure represents an adapter (protocol or + * lane adapter). */ struct tb_port { struct tb_regs_port_header config; -- 2.25.1