diff options
Diffstat (limited to 'drivers/thunderbolt/switch.c')
| -rw-r--r-- | drivers/thunderbolt/switch.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c index 7873b173a351..e5a622b9acc3 100644 --- a/drivers/thunderbolt/switch.c +++ b/drivers/thunderbolt/switch.c @@ -2773,6 +2773,19 @@ static void tb_switch_link_init(struct tb_switch *sw) if (down->dual_link_port) down->dual_link_port->bonded = bonded; tb_port_update_credits(down); + + if (tb_port_get_link_generation(up) < 4) + return; + + /* + * Set the Gen 4 preferred link width. This is what the router + * prefers when the link is brought up. If the router does not + * support asymmetric link configuration, this also will be set + * to TB_LINK_WIDTH_DUAL. + */ + sw->preferred_link_width = sw->link_width; + tb_sw_dbg(sw, "preferred link width %s\n", + tb_width_name(sw->preferred_link_width)); } /** |