[PATCH 0/2][SRU][GROOVY][RISCV] Revert SiFive Unleashed CPUFreq (LP: #1917433

[Colin King]

From: Colin Ian King <colin.king at canonical.com>

== SRU Justifcation Groovy/Hirsute RISCV ==

The SiFive Unleashed board with the current Ubuntu cpufreq default
config can hang on boot with CPU freq enabled with the latest device
tree settings.  It is known that the cpufreq can be problematic so
the recommended way forward is to currently revert the cpufreq
enablement commit.

commit 3949df6ecdca04339bc8a3925c2ba7f881cf82b1
Author: David Abdurachmanov <david.abdurachmanov at sifive.com>
Date:   Tue Jan 28 02:55:56 2020 -0800

    SiFive Unleashed CPUFreq

== The fix(es) ==

Revert commit "SiFive Unleashed CPUFreq"

== Test Case ==

Boot with the latest DT. It should now boot. Boot without the latest DT, it should also boot.

== Where problems could occur ==

Users expecting CPU freq scaling now don't have this working option.
This is deemed to be acceptable as without the fix their systems are
likely to be unbootable with the updated DT.

Colin Ian King (2):
  Revert "SiFive Unleashed CPUFreq"
  UBUNTU: [Config] Update annotations for CPUFreq revert

 arch/riscv/Kconfig                            |  8 -----
 arch/riscv/boot/dts/sifive/fu540-c000.dtsi    |  5 ---
 .../boot/dts/sifive/hifive-unleashed-a00.dts  | 34 -------------------
 arch/riscv/configs/defconfig                  |  5 ---
 debian.riscv/config/annotations               |  3 +-
 5 files changed, 2 insertions(+), 53 deletions(-)

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2.29.2