Hi Anand,

On Fri, Aug 30, 2019 at 11:34 AM Anand Moon [off-list ref] wrote:
[...]

quoted

SCPI works fine on all tested devices, except Odroid-C2, because Hardkernel left
the > 1.5GHz freq in the initial SCPI tables loaded by the BL2, i.e. packed with U-Boot.
Nowadays they have removed the bad frequencies, but still some devices uses the old
bootloader.

But in the SCPI case we trust the table returned by the firmware and use it as-in,
and there is no (simple ?) way to override the table and set a max frequency.

This is why we disabled SCPI.

See https://patchwork.kernel.org/patch/9500175/

I have quickly enable this on my board and here the cpufreq info

[...]

Almost all the test case pass with this one as off now.

I suggest to send an RFC patch to (re-)enable DVFS on Odroid-C2
I find it easy to miss a DVFS discussion inside a "missing regulator" series

with a separate patch you can also get feedback from other Odroid-C2
owners who can help testing
coincidence or not: on Friday someone asked in the #linux-amlogic IRC
channel why Odroid-C2 didn't have DVFS enabled and what to do about it


Martin

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