On Thu, Feb 16, 2017 at 05:33:48PM +0000, Russell King - ARM Linux wrote:

On Thu, Feb 16, 2017 at 04:31:33PM +0100, Gregory CLEMENT wrote:

quoted

The Armada 7K/8K SoCs use the same RTC IP than the Armada 38x. However
the SOC integration differs in 2 points:
     - MBUS bridge timing initialization
     - IRQ configuration at SoC level

This patch set extends the driver support to these SoCs family.

I've just tried merging this into my kernel, and...

root@mcbin:~# date
Thu Feb 16 17:33:00 GMT 2017
root@mcbin:~# hwclock -uw
root@mcbin:~# hwclock
Sun 07 Feb 2106 01:49:51 GMT  -10.010475 seconds
root@mcbin:~# hwclock
Sun 07 Feb 2106 01:49:51 GMT  -10.010458 seconds

I guess it needs the same hack that Armada38x needs - "date reset" twice
in uboot?

Hmm, even with that sorted:

root@mcbin:~# hwclock
Thu 16 Feb 2017 17:35:50 GMT  -0.786571 seconds
root@mcbin:~# hwclock
Thu 16 Feb 2017 17:35:51 GMT  -1.347541 seconds
root@mcbin:~# hwclock
Thu 16 Feb 2017 17:35:52 GMT  -1.889295 seconds
root@mcbin:~# hwclock
Thu 16 Feb 2017 17:35:53 GMT  -1.787338 seconds
root@mcbin:~# hwclock
Thu 16 Feb 2017 17:35:54 GMT  -1.444397 seconds
root@mcbin:~# hwclock
Thu 16 Feb 2017 17:35:55 GMT  -1.419772 seconds
root@mcbin:~# hwclock
Thu 16 Feb 2017 17:35:58 GMT  -2.555282 seconds
root@mcbin:~# hwclock
Thu 16 Feb 2017 17:36:09 GMT  -0.515289 seconds
root@mcbin:~# hwclock
Thu 16 Feb 2017 17:36:11 GMT  -1.773030 seconds
root@mcbin:~#

I think this RTC is a random number generator.  It's certainly not
a reliable indication of time.

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