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authorMika Westerberg <mika.westerberg@linux.intel.com>2021-02-01 15:03:00 +0300
committerMika Westerberg <mika.westerberg@linux.intel.com>2021-02-04 10:38:38 +0300
commitc3963a5563d3baa8e46f6af7926893358a7319e6 (patch)
tree7fc01546b53e5c03c74d99d3dc1135f807c7fb4e /drivers/thunderbolt
parent5c6b471b6ca26c8c67385e1a90e635b4205738a9 (diff)
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 <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt')
-rw-r--r--drivers/thunderbolt/tb.h5
1 files changed, 5 insertions, 0 deletions
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;