[RESEND][PATCH v2 4/4] soc: samsung: exynos-asv: Update Energy Model after adjusting voltage
Lukasz Luba
lukasz.luba at arm.com
Tue Mar 26 01:28:31 PDT 2024
On 3/25/24 19:17, Krzysztof Kozlowski wrote:
> On 22/03/2024 12:08, Lukasz Luba wrote:
>> When the voltage for OPPs is adjusted there is a need to also update
>> Energy Model framework. The EM data contains power values which depend
>> on voltage values. The EM structure is used for thermal (IPA governor)
>> and in scheduler task placement (EAS) so it should reflect the real HW
>> model as best as possible to operate properly.
>>
>> Based on data on Exynos5422 ASV tables the maximum power difference might
>> be ~29%. An Odroid-XU4 (with a random sample SoC in this chip lottery)
>> showed power difference for some OPPs ~20%. Therefore, it's worth to
>> update the EM.
>>
>> Signed-off-by: Lukasz Luba <lukasz.luba at arm.com>
>> ---
>> drivers/soc/samsung/exynos-asv.c | 11 ++++++++++-
>> 1 file changed, 10 insertions(+), 1 deletion(-)
>
> I assume there is dependency, even though cover letter did not mention
> it, so:
>
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski at linaro.org>
Thanks Krzysztof for the review. Yes, it touches driver in your tree
indeed. Hopefully it can goes smoothly via Rafael's tree with your
tag.
Regards,
Lukasz
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