Re: [PATCH v3 2/5] phy: core: Define TBT phy_mode

From: Manivannan Sadhasivam

Date: Fri Aug 07 2026 - 08:18:45 EST


On Thu, Jul 30, 2026 at 04:19:14PM +0200, Konrad Dybcio wrote:
> From: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
>
> There exist OS-accessible USB4 and Thunderbolt PHYs that need specific
> configuration. Define a new phy_mode for them.
>
> Currently, USB4 and TBT3 are defined as submodes, because they're quite
> distinct, most visibly in the electrical/analog aspects (slightly
> different frequencies, timings, etc.). This results in a need to make
> the PHY aware of the actual mode needed (at least in the Qualcomm
> implementation, but I believe that'll be a general need).
>
> Newer versions of TBT are basically supersets of USB4 with higher
> host-side requirements, so these are not defined. This can always be
> changed as necessary.
>
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxxxxxxxx>
> Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxxxxxxxx>

- Mani

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