[PATCH] mvebu: 5.10: fix DVFS caused random boot crashes

Hauke Mehrtens hauke at hauke-m.de
Tue May 18 11:36:40 PDT 2021

On 5/18/21 7:03 PM, Robert Marko wrote:
> 5.10.37 introduced a lot of DVFS changes for Armada 37xx from 5.13 kernel.
> Unfortunately commit:
> https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/drivers/cpufreq/armada-37xx-cpufreq.c?h=v5.10.37&id=a13b110e7c9e0dc2edcc7a19d4255fc88abd83cc
> This patch actually corrects the things so that 1 or 1.2GHz models would actually get scaled to their native frequency.
> However, due to a AVS setting voltages too low this will cause random crashes on 1.2GHz models.
> So, until a new safe for everybody voltage is agreed on
> lets revert the patch.
> Fixes: d337731 ("kernel: bump 5.10 to 5.10.37")
> Signed-off-by: Robert Marko <robert.marko at sartura.hr>

This commit was also backported to v5.4.119 and is now in OpenWrt 21.02 
branch, we should probably also revbert it there.

@Robert Are you working with upstream Linux to fix this problem upstream 
too? For now this revert should be fine.

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