Re: [PATCH] thunderbolt: Remove the TBT3 Not Supported bit
From: Mika Westerberg
Date: Mon Feb 03 2025 - 03:47:06 EST
Hi,
On Mon, Feb 03, 2025 at 01:17:47AM +0000, Mohammad Rahimi wrote:
> Since USB4 v2 specification has removed the mandatory requirement to
> support TBT3 on a USB4 Dock UFP, the TBT3 Not Supported bit is not
> usable, as when it needs to be read there is no USB4 Link.
>
> This change was introduced in a "USB4 2.0 ENGINEERING CHANGE NOTICE
> FORM" published in September 2024, titled "TBT3 Support on USB4 Dock
> UFP".
I think the USB4 v1 hardware still has this bit and since it is just
debugging there is no harm keeping it around.