ACK w/cmt: [PATCH 0/2][SRU][HIRSUTE][RISCV] Revert SiFive Unleashed CPUFreq (LP: #1917433

Tim Gardner tim.gardner at canonical.com
Tue Mar 2 12:56:32 UTC 2021



On 3/2/21 4:22 AM, Colin King wrote:
> From: Colin Ian King <colin.king at canonical.com>
> 
> == SRU Justifcation 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.
> 
> 
> *** BLURB HERE ***
> 
> 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-21.04/config/annotations         |  3 +-
>   debian.riscv/config/annotations               |  3 +-
>   6 files changed, 4 insertions(+), 54 deletions(-)
> 
Perhaps apply in reverse order.

Patch 2/2 has a spelling error, "diabling".

Acked-by: Tim Gardner <tim.gardner at canonical.com>
-----------
Tim Gardner
Canonical, Inc



More information about the kernel-team mailing list