From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tony Lindgren Subject: Re: [PATCH 1/3] ARM: dts: omap5-board-common: enable rtc and charging of backup battery Date: Wed, 6 Jan 2016 08:41:36 -0800 Message-ID: <20160106164136.GI12777@atomide.com> References: <568C5451.8070709@ti.com> <20160106010011.GG12777@atomide.com> <8FE6954B-6411-4593-9CE5-717A469A6AA8@goldelico.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <8FE6954B-6411-4593-9CE5-717A469A6AA8-xXXSsgcRVICgSpxsJD1C4w@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: "H. Nikolaus Schaller" Cc: Laxman Dewangan , Nishanth Menon , =?utf-8?Q?Beno=C3=AEt?= Cousson , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Russell King , linux-omap , devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, LKML , Marek Belisko List-Id: devicetree@vger.kernel.org Hi, * H. Nikolaus Schaller [160106 00:12]: > Am 06.01.2016 um 02:00 schrieb Tony Lindgren : > > > > 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 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html