Bug#1050587: linux: cpufreq-dt requires manually loading cpufreq-dt-platdev (6.5 regression)

From	Aurelien Jarno <aurel32@debian.org>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1050587: linux: cpufreq-dt requires manually loading cpufreq-dt-platdev (6.5 regression)
Date	2023-08-26 19:30 +0200
Message-ID	<H75gK-4zxY-5@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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Source: linux
Version: 6.5~rc7-1~exp1
Severity: normal
Tags: upstream

Starting with kernel 6.5, the cpufreq-dt-platdev driver can be built as
module [1]. This is done through the CPUFREQ_DT_PLATDEV config, which is
selected by CPUFREQ_DT. However the cpufreq-dt-platdev is not
autoloaded.

On the configs enabling the CPUFREQ_DT module, that is armel/rpi, armhf
and arm64, this means that CPUFREQ_DT_PLATDEV is changed from built-in
in 6.4 to module in 6.5. In turns this means that cpufreq is not
supported anymore unless the cpufreq-dt-platdev is manually loaded.
Tested on a RK3568 based ODROID-M1 board.

We should probably force CPUFREQ_DT_PLATDEV=y on the configs where
CPUFREQ_DT=m.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v6.5-rc7&id=3b062a086984d35a3c6d3a1c7841d0aa73aa76af

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Bug#1050587: linux: cpufreq-dt requires manually loading cpufreq-dt-platdev (6.5 regression) Aurelien Jarno <aurel32@debian.org> - 2023-08-26 19:30 +0200
  Bug#1050587: linux: cpufreq-dt requires manually loading cpufreq-dt-platdev (6.5 regression) "Lukas F. Hartmann" <lukas@mntre.com> - 2023-08-30 16:10 +0200
  Bug#1050587: marked as done (linux: cpufreq-dt requires manually  loading cpufreq-dt-platdev (6.5 regression)) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2023-09-03 13:50 +0200

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