Hi Ulf,
On Wed, 9 Jul 2025 at 13:31, Ulf Hansson <ulf.hansson@xxxxxxxxxx> wrote:
> On Tue, 1 Jul 2025 at 13:47, Ulf Hansson <ulf.hansson@xxxxxxxxxx> wrote:
> > Changes in v3:
> > - Added a couple of patches to adress problems on some Renesas
> > platforms. Thanks Geert and Tomi for helping out!
> > - Adressed a few comments from Saravanna and Konrad.
> > - Added some tested-by tags.
>
> I decided it was time to give this a try, so I have queued this up for
> v6.17 via the next branch at my pmdomain tree.
>
> If you encounter any issues, please let me know so I can help to fix them.
Thanks for your series! Due to holidays, I only managed to test
this very recently.
Unfortunately I have an issue with unused PM Domains no longer being
disabled on R-Car:
- On R-Car Gen1/2/3, using rcar-sysc.c, unused PM Domains are never
disabled.
- On R-Car Gen4, using rcar-gen4-sysc.c, unused PM Domains are
sometimes not disabled.
At first, I noticed the IOMMU driver was not enabled in my config,
and enabling it did fix the issue. However, after that I still
encountered the issue in a different config that does have the
IOMMU driver enabled...
FTR, unused PM Domains are still disabled correctly on R/SH-Mobile
(using rmobile-sysc.c) and on BeagleBone Black. Note that these use
of_genpd_add_provider_simple(), while all R-Car drivers use
of_genpd_add_provider_onecell(). Perhaps there is an issue with
the latter? If you don't have a clue, I plan to do some more
investigation later...
BTW, the "pending due to"-messages look weird to me.
On R-Car M2-W (r8a7791.dtsi) I see e.g.:
genpd_provider ca15-cpu0: sync_state() pending due to e6020000.watchdog
renesas-cpg-mssr e6150000.clock-controller: sync_state() pending
due to e6020000.watchdog
ca15-cpu0 is the PM Domain holding the first CPU core, while
the watchdog resides in the always-on Clock Domain, and uses the
clock-controller for PM_CLK handling.
Thanks!
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
