On 02/09/2016 04:56 PM, Tony Lindgren wrote:
* Daniel Lezcano <daniel.lezcano@xxxxxxxxxx> [160102 14:01]:
On 01/02/2016 03:26 PM, Pali Rohár wrote:
Hello,
due to this Daniel Lezcano commit (ARM: OMAP3: cpuidle - remove rx51
cpuidle parameters table)
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=231900afba52d6faddfb480cde4132d4edc089bc
we need patch cpuidle34xx.c code to fix commit for Nokia N900. See:
https://github.com/pali/linux-n900/commit/e147fd4b678f1f3d7a5235287910960bd41e04dc
As Nokia N900 code is converting from legacy board code to DST, I would
like to know how to patch correctly omap3_idle_driver in DTS with
correct values measured for Nokia N900. Thanks!
I'm almost certain those values are not n900 specific but should be
used for omap3430 in general.
the conversion to the DT based arm cpuidle driver could be a bit complex
with one issue (index 0 != cpu_do_idle()) and one performance regression
(cpu_pm_enter/exit will be called in retention mode, even if this is not
needed).
It will result in a PM code only on one side and on the other side, the
generic cpuidle-arm.c driver will be used instead with the DT definition. It
is worth to the conversion because the result will be nice IMO.
Added Lorenzo who is initially author of the arm generic driver. We already
discussed in the past about those two issues above and I think this is
something we should improve.
While this conversion process is going on, we could just add
omap3430_idle_driver and set that based on cpu_is_omap3430()
in omap3_idle_init().
Yes, that could be a temporary alternative.
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