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Date: Wed, 6 Jan 2016 08:41:36 -0800
From: Tony Lindgren <tony@atomide.com>
To: "H. Nikolaus Schaller" <hns@goldelico.com>
Cc: Laxman Dewangan <ldewangan@nvidia.com>, Nishanth Menon <nm@ti.com>,
        =?utf-8?Q?Beno=C3=AEt?= Cousson <bcousson@baylibre.com>,
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        Mark Rutland <mark.rutland@arm.com>,
        Ian Campbell <ijc+devicetree@hellion.org.uk>,
        Kumar Gala <galak@codeaurora.org>,
        Russell King <linux@arm.linux.org.uk>,
        linux-omap <linux-omap@vger.kernel.org>, devicetree@vger.kernel.org,
        LKML <linux-kernel@vger.kernel.org>,
        Marek Belisko <marek@goldelico.com>
Subject: Re: [PATCH 1/3] ARM: dts: omap5-board-common: enable rtc and
 charging of backup battery
Message-ID: <20160106164136.GI12777@atomide.com>
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Hi,

* H. Nikolaus Schaller <hns@goldelico.com> [160106 00:12]:
> Am 06.01.2016 um 02:00 schrieb Tony Lindgren <tony@atomide.com>:
> > 
> > Also I'm not seeing just zeroes coming from RTC after typing hwclock
> > on omap5-uevm. It's working on x15 though.
> > 
> > Nikolaus, is hwclock command working for you on omap5-uevm?
> 
> Well, yes and no. It appears it *was* working when tested last time
> (we sometimes have months of delay for submitting patches upstream).
> 
> I have found an SD image with 4.3-rc6 with this patch in the dtb and
> there it works. With 4.4-rc8 it does not work. hwclock command hangs for
> 10 seconds (I guess some timeout).
> 
> I have checked the dtb and in both cases it is interrupts = <8 0>;
> 
> xxd /sys/firmware/devicetree/base/ocp/i2c@48070000/palmas@48/rtc/interrupts
> 0000000: 0000 0008 0000 0000
> 
> So I think something has changed in the rtc driver or somewhere else.

I just gave it a try on v4.3-rc6 with omap5-uevm.dts patched for
RTC, and I still don't have hwclock working with RTC.

It seems you have some additional patches there that make it work?

I guess it could also be a bootloader change if it's a different
SD image that works for you.

Regards,

Tony