license MIT or proprietary?

[s-light]

hello analogdevices team,

i just found this copyright notice in this file
https://github.com/analogdevicesinc/PyTrinamic/blob/master/pytrinamic/ic/TMC2300.py

################################################################################
# Copyright © 2019 TRINAMIC Motion Control GmbH & Co. KG
# (now owned by Analog Devices Inc.),
#
# Copyright © 2023 Analog Devices Inc. All Rights Reserved.
# This software is proprietary to Analog Devices, Inc. and its licensors.
################################################################################

but the repository itself claims to be MIT licensed.

maybe i just do not understand this license-things
i would expect a MIT license block in this file too....

why iam asking?
i thought about testing out the TMC2300 with a CircuitPython setup -
for this i would have to write a library in the end...
and of course it would make sense to not reinvent the wheel - for such things like registername to value mappings...
but without out a proper foss license applied to the single files it is useless for other foss based projects and spare-time projects.

(i know the main target audience for analgodevices is professionals..)