From: linux@armlinux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 0/3] Extend rtc-armada38x support for Armada 7K/8K
Date: Thu, 16 Feb 2017 17:37:48 +0000 [thread overview]
Message-ID: <20170216173748.GU27312@n2100.armlinux.org.uk> (raw)
In-Reply-To: <20170216173348.GT27312@n2100.armlinux.org.uk>
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:
> > 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 at mcbin:~# date
> Thu Feb 16 17:33:00 GMT 2017
> root at mcbin:~# hwclock -uw
> root at mcbin:~# hwclock
> Sun 07 Feb 2106 01:49:51 GMT -10.010475 seconds
> root at 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 at mcbin:~# hwclock
Thu 16 Feb 2017 17:35:50 GMT -0.786571 seconds
root at mcbin:~# hwclock
Thu 16 Feb 2017 17:35:51 GMT -1.347541 seconds
root at mcbin:~# hwclock
Thu 16 Feb 2017 17:35:52 GMT -1.889295 seconds
root at mcbin:~# hwclock
Thu 16 Feb 2017 17:35:53 GMT -1.787338 seconds
root at mcbin:~# hwclock
Thu 16 Feb 2017 17:35:54 GMT -1.444397 seconds
root at mcbin:~# hwclock
Thu 16 Feb 2017 17:35:55 GMT -1.419772 seconds
root at mcbin:~# hwclock
Thu 16 Feb 2017 17:35:58 GMT -2.555282 seconds
root at mcbin:~# hwclock
Thu 16 Feb 2017 17:36:09 GMT -0.515289 seconds
root at mcbin:~# hwclock
Thu 16 Feb 2017 17:36:11 GMT -1.773030 seconds
root at mcbin:~#
I think this RTC is a random number generator. It's certainly not
a reliable indication of time.
--
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to speedtest.net.
next prev parent reply other threads:[~2017-02-16 17:37 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-16 15:31 [PATCH 0/3] Extend rtc-armada38x support for Armada 7K/8K Gregory CLEMENT
2017-02-16 15:31 ` [PATCH 1/3] rtc: armada38x: Prepare driver to manage different versions Gregory CLEMENT
2017-02-16 15:31 ` [PATCH 2/3] rtc: armada38x: Add support for Armada 7K/8K Gregory CLEMENT
2017-02-16 15:31 ` [PATCH 3/3] arm64: dts: marvell: add RTC description " Gregory CLEMENT
2017-02-16 17:33 ` [PATCH 0/3] Extend rtc-armada38x support " Russell King - ARM Linux
2017-02-16 17:37 ` Russell King - ARM Linux [this message]
2017-02-17 9:52 ` Gregory CLEMENT
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