From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5CE46C46464 for ; Fri, 10 Aug 2018 11:03:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1408B2240A for ; Fri, 10 Aug 2018 11:03:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1408B2240A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ucw.cz Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727580AbeHJNdW (ORCPT ); Fri, 10 Aug 2018 09:33:22 -0400 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:36299 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726963AbeHJNdW (ORCPT ); Fri, 10 Aug 2018 09:33:22 -0400 Received: by atrey.karlin.mff.cuni.cz (Postfix, from userid 512) id 86CFE805D7; Fri, 10 Aug 2018 13:03:53 +0200 (CEST) Date: Fri, 10 Aug 2018 13:03:50 +0200 From: Pavel Machek To: Tony Lindgren Cc: Michael Nazzareno Trimarchi , kernel list , linux-arm-kernel , Linux OMAP Mailing List , Sebastian Reichel , nekit1000@gmail.com, mpartap@gmx.net, Merlijn Wajer Subject: Re: Droid 4: suspend to RAM? Message-ID: <20180810110350.GA13431@amd> References: <20180725200205.GA29594@amd> <20180725212853.GA1965@amd> <20180727113214.GA32069@amd> <20180808090512.GQ99251@atomide.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="vkogqOf2sHV7VnPd" Content-Disposition: inline In-Reply-To: <20180808090512.GQ99251@atomide.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --vkogqOf2sHV7VnPd Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi! > * Pavel Machek [180727 11:35]: > > Hi! > > > > > high even before modem (and thus USB) is enabled. > > > > > > > > > > Interestingly, CyanogenMod and Jolla seem to have higher power > > > > > consumption than stock operating system. > > > > > > > > > > (My Linux can survive for 10 hours, stock system could survive fo= r 4 > > > > > days if I'm not mistaken). > > > > > > > > > > I thought I would experiment with suspend to RAM.. and it indeed > > > > > seemed to suspend ok, but I could not wake it up. Do I need to se= t up > > > > > wakeup with button somehow? Is suspend to RAM required for good p= ower > > > > > consumption? > > > >=20 > > > > Sorry but pm subsystem has debug mode that you can test in a easy w= ay. > > > > You can even wakeup by any rtc alarm easily. > > >=20 > > > Yes, that is how it works on PC (but there power button works, > > > too). Is it expected to work on Droid in v4.18? > >=20 > > I tried setting up wakeup using RTC, but no, it does not seem to work: > >=20 > > root@devuan:/my/tui/d4# rtcwake -m no -s 5 > > rtcwake: wakeup using /dev/rtc0 at Fri Jul 27 11:28:44 2018 > > root@devuan:/my/tui/d4# echo mem > /sys/power/state >=20 > Works for me here as tested on next-20180808, maybe you don't have > CONFIG_RTC_DRV_CPCAP? Maybe you are trying to use CONFIG_RTC_DRV_OMAP? Mainline seems to fail suspend, with CONFIG_DRM turned off. Aha, and same behaviour with CONFIG_DRM on. Why is it different today? [ 334.933532] Charging, 4350000 uV, 532000 uA [ 338.093109] PM: suspend entry (deep) [ 338.096710] PM: Syncing filesystems ... done. [ 338.138977] Freezing user space processes ... (elapsed 0.001 seconds) done. [ 338.147338] OOM killer disabled. [ 338.150604] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done. [ 338.159240] Suspending console(s) (use no_console_suspend to debug) [ 338.168212] phy phy-usb-phy@1.1: phy poweroff failed --> -19 [ 338.181518] l4_wkup_cm:clk:0018:0: failed to disable [ 338.183227] PM: noirq suspend of devices failed [ 338.187377] g_ether gadget: reset config [ 338.187408] g_ether gadget: ecm deactivated [ 338.187408] usb0: gether_disconnect [ 338.513092] OOM killer enabled. [ 338.516296] Restarting tasks ... done. [ 338.529266] PM: suspend exit [ 338.698577] g_ether gadget: high-speed config #1: CDC Ethernet (ECM) [ 338.704986] g_ether gadget: init ecm [ 338.708587] g_ether gadget: notify connect true [ 338.713958] g_ether gadget: activate ecm [ 338.717895] usb0: qlen 10 [ 338.720550] g_ether gadget: ecm_open [ 338.724151] usb0: eth_start [ 338.727111] g_ether gadget: packet filter 0c [ 338.731414] g_ether gadget: ecm req21.43 v000c i0000 l0 [ 338.993835] cpcap_usb_detect: 27 callbacks suppressed With USB unplugged, suspend seems to behave as expected, even on v4.18-rc8, and it seems to work even with X running and modem online. Good. > Then for deeper idle modes, you need to also idle UARTs, and unbind or > unload USB related modules. You should get to something like 160mW > power consumption with mdm6600 enabled and SoC suspended that way. >=20 > Then again system running idle is about the same with timers and > interrupts working so I'd just idle UARTs and unload USB modules :) Ok, let me play with it some more. Thanks for help, Pavel =09 --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --vkogqOf2sHV7VnPd Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAlttcRYACgkQMOfwapXb+vIypgCfcgKLQzYK40p4PzVpcv2pMZHL bcwAn2VhDFGcPpmaF0dXg5zS4nK/fZMr =hqAp -----END PGP SIGNATURE----- --vkogqOf2sHV7VnPd--