From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752120AbcAFQrq (ORCPT ); Wed, 6 Jan 2016 11:47:46 -0500 Received: from mo4-p00-ob.smtp.rzone.de ([81.169.146.162]:61161 "EHLO mo4-p00-ob.smtp.rzone.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751761AbcAFQrn convert rfc822-to-8bit (ORCPT ); Wed, 6 Jan 2016 11:47:43 -0500 X-Greylist: delayed 103557 seconds by postgrey-1.27 at vger.kernel.org; Wed, 06 Jan 2016 11:47:42 EST X-RZG-AUTH: :JGIXVUS7cutRB/49FwqZ7WcKdUCnXG6JabOfSXKWrat+gtPqzo0= X-RZG-CLASS-ID: mo00 Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) Subject: Re: [PATCH 1/3] ARM: dts: omap5-board-common: enable rtc and charging of backup battery From: "H. Nikolaus Schaller" In-Reply-To: <20160106164136.GI12777@atomide.com> Date: Wed, 6 Jan 2016 17:47:33 +0100 Cc: Laxman Dewangan , Nishanth Menon , =?iso-8859-1?Q?Beno=EEt_Cousson?= , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Russell King , linux-omap , devicetree@vger.kernel.org, LKML , Marek Belisko Content-Transfer-Encoding: 8BIT Message-Id: <2AC46952-3758-458A-B0A5-1794C207BD4C@goldelico.com> References: <568C5451.8070709@ti.com> <20160106010011.GG12777@atomide.com> <8FE6954B-6411-4593-9CE5-717A469A6AA8@goldelico.com> <20160106164136.GI12777@atomide.com> To: Tony Lindgren X-Mailer: Apple Mail (2.1878.6) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Tony, Am 06.01.2016 um 17:41 schrieb Tony Lindgren : > 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? Hm. Not that I am aware of. We just did add the rtc nodes but did not touch palmas drivers (except adding the gpadc of this patch series). > > I guess it could also be a bootloader change if it's a different > SD image that works for you. Yes, it is using a 2 years old U-Boot instead 2015.10 compiled from source. I will try to find out if it makes a difference. BR, Nikolaus