Thread (53 messages) 53 messages, 9 authors, 2016-08-25

Re: [PATCH 1/3] ARM: dts: omap5-board-common: enable rtc and charging of backup battery

From: Tony Lindgren <tony@atomide.com>
Date: 2016-01-11 20:24:34
Also in: linux-omap, lkml

* H. Nikolaus Schaller [off-list ref] [160108 11:32]:
Am 08.01.2016 um 20:04 schrieb Tony Lindgren [off-list ref]:
quoted
* H. Nikolaus Schaller [off-list ref] [160108 10:33]:
quoted
Am 08.01.2016 um 19:15 schrieb Tony Lindgren [off-list ref]:
quoted
* H. Nikolaus Schaller [off-list ref] [160108 09:50]:
quoted
So I think it is something which is unstable in 4.4-rc8 that is (probably) fixed in
linux-next and unrelated to this DT patch.

But I have no hint or idea what it is.
Or something hangs the RTC? And the back-up battery has to drain to
reset the RTC somehow?
Indeed it could be something like this. I already suspected that it depends
on boot order of some components.

But you get the /dev/rtc and /sys/class/rtc nodes? This is what this patch
should enable (and not fix potential driver issues).
Yes no problems with $subject patch. It's just the we also need
to figure out why RTC does not work :)
Yes indeed. I can not focus on that at the moment but as soon as we have
the new Pyra handheld devices (with OMAP5+Palmas) running, there will
be more developers to look at it.
OK so the issue is that the twl msecure pin should be high to enable
the RTC registers. We used to have that code with platform_data, but
no longer have it with device tree based booting. I'll send a patch
for that.

Curiously setting jumper j5 on beagle-x15 that controls what used to
be the msecure and now is powerhold, does the opposite.. The
device boots automatically but RTC is stopped?

Regards,

Tony
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