Comment 1 by Nikolaus Schaller, Apr 10, 2020
We have submitted code upstream that switches to OPPv2 format which allows to make the 1GHz OPP depend on the speed binned bit. This works well. Unfortunately the dm3730 (GTA04A5) is a little unreliable at 1GHz. It can be demonstrated by running kmscube on Bullseye without SGX and switching cpufreq-set -f between 800M and 1G. At 1G there are drawing artefacts. The process may also break with SIGBUS or SIGILL. This indicates that the DM3730 isn't running at the correct OPP voltage. Maybe, 1GHz also needs Smart Reflex in operation while the standard ti-cpufreq code just switches voltages to predefined values.
Comment 2 by Nikolaus Schaller, Apr 10, 2020
Summary: DB3730CBP100 problems with turbo-mode
Comment 3 by Nikolaus Schaller, Apr 10, 2020
Summary: DB3730CBP100 problems with turbo-mode (1GHz enabled)
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Reported by Nikolaus Schaller, May 24, 2014