Re: brocken devfreq simple_ondemand for Odroid XU3/4?

From: Lukasz Luba
Date: Mon Jun 29 2020 - 14:40:06 EST




On 6/26/20 12:22 PM, Bartlomiej Zolnierkiewicz wrote:

On 6/25/20 2:12 PM, Kamil Konieczny wrote:
On 25.06.2020 14:02, Lukasz Luba wrote:


On 6/25/20 12:30 PM, Kamil Konieczny wrote:

[snip]


Kamil do you have plans to refresh and push your next version of the
workqueue solution?

I do not, as Bartek takes over my work,
+CC Bartek

Hi Lukasz,

Hi Bartek,


As you remember in January Chanwoo has proposed another idea (to allow
selecting workqueue type by devfreq device driver):

"I'm developing the RFC patch and then I'll send it as soon as possible."
(https://lore.kernel.org/linux-pm/6107fa2b-81ad-060d-89a2-d8941ac4d17e@xxxxxxxxxxx/)

"After posting my suggestion, we can discuss it"
(https://lore.kernel.org/linux-pm/f5c5cd64-b72c-2802-f6ea-ab3d28483260@xxxxxxxxxxx/)

so we have been waiting on the patch to be posted..

Similarly we have been waiting on (any) feedback for exynos-bus/nocp
fixes for Exynos5422 support (which have been posted by Kamil also in
January):

https://lore.kernel.org/linux-pm/8f82d8d5-927b-afb4-272f-45c16b5a23b9@xxxxxxxxxxx/

Considering the above and how hard it has been to push the changes
through review/merge process last year we are near giving up when it
comes to upstream devfreq contributions. Sylwester is still working on
exynos-bus & interconnect integration (continuation of Artur Swigon's
work from last year) & related issues (IRQ support for PPMU) but
I'm seriously considering putting it all on-hold..

Thank you for detailed explanation and update. I see. Anyway, if you or
Sylwester need some help with this devfreq workqueue, I offer my time
as a reviewer&tester.

The more generic solution you propose, the better for all platforms.

Regards,
Lukasz


Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics