From: Tony Lindgren <tony@atomide.com> To: Pavel Machek <pavel@ucw.cz> Cc: pali.rohar@gmail.com, sre@kernel.org, kernel list <linux-kernel@vger.kernel.org>, linux-arm-kernel <linux-arm-kernel@lists.infradead.org>, linux-omap@vger.kernel.org, khilman@kernel.org, aaro.koskinen@iki.fi, ivo.g.dimitrov.75@gmail.com, patrikbachan@gmail.com, serge@hallyn.com, Tomi Valkeinen <tomi.valkeinen@ti.com> Subject: Re: Nokia N900 retention mode in v4.6, camera buttons fun Date: Mon, 18 Apr 2016 16:47:46 -0700 [thread overview] Message-ID: <20160418234746.GY5995@atomide.com> (raw) In-Reply-To: <20160417175539.GA502@amd> * Pavel Machek <pavel@ucw.cz> [160417 10:56]: > > The off mode makes a huge difference for standby time, it should cut > > down the total power consumption to something like 10+ mW with modem > > enabled. Aproximately the breakdown is roughly: 900 uW for omap, 5 mW > > for memory and 5 or more for the modem. Sorry I don't know the exact > > numbers for the modem. But with 37xx torpedo, mainline kernel is > > already getting very close to the 900 uW + 5 mW numbers for the CPU > > module during idle measured from the ina219 shunt on the torpedo > > devkit. > > CONFIG_HSI breaks power management completely, so power management > with modem will be another topic. OK > > > > In the meantime, I found what is causing the rention mode to break for > > > > me: CONFIG_HSI (aka wireless modem support). With HSI off, it seems to work. > > > > > > > > I still get problems with the camera button, in config similar to > > > > defconfig. For some reason, I'm even getting (autorepeating) ^@ on > > > > console. As long as I hold camera button down, I even get it into off > > > > mode for brief period. > > > > > > Ok, if I turn off CONFIG_KEYBOARD_GPIO, I get it into off > > > mode... once per screen blank, for about a second. (Does CONFIG_KEYBOARD_GPIO also cause > > > problems for you?) > > > > > > Any idea why it enters off mode only once after each screenblank? > > > > After disabling CONFIG_PROVE_LOCKING, loading the LCD modules, and > > blanking the screen, my n900 hits off mode just fine about once > > a second. Sounds like you still have some extra devices enabled > > causing it. > > I checked again... also with vanilla 4.6-rc2 to double check... same effect. > > Aha, got it... cat-ing /sys/kernel/debug/pm_debug/count breaks the > off mode. If I don't do that (tm), it seems to work way better. Ah I see yeah :) Regards, Tony
WARNING: multiple messages have this Message-ID (diff)
From: tony@atomide.com (Tony Lindgren) To: linux-arm-kernel@lists.infradead.org Subject: Nokia N900 retention mode in v4.6, camera buttons fun Date: Mon, 18 Apr 2016 16:47:46 -0700 [thread overview] Message-ID: <20160418234746.GY5995@atomide.com> (raw) In-Reply-To: <20160417175539.GA502@amd> * Pavel Machek <pavel@ucw.cz> [160417 10:56]: > > The off mode makes a huge difference for standby time, it should cut > > down the total power consumption to something like 10+ mW with modem > > enabled. Aproximately the breakdown is roughly: 900 uW for omap, 5 mW > > for memory and 5 or more for the modem. Sorry I don't know the exact > > numbers for the modem. But with 37xx torpedo, mainline kernel is > > already getting very close to the 900 uW + 5 mW numbers for the CPU > > module during idle measured from the ina219 shunt on the torpedo > > devkit. > > CONFIG_HSI breaks power management completely, so power management > with modem will be another topic. OK > > > > In the meantime, I found what is causing the rention mode to break for > > > > me: CONFIG_HSI (aka wireless modem support). With HSI off, it seems to work. > > > > > > > > I still get problems with the camera button, in config similar to > > > > defconfig. For some reason, I'm even getting (autorepeating) ^@ on > > > > console. As long as I hold camera button down, I even get it into off > > > > mode for brief period. > > > > > > Ok, if I turn off CONFIG_KEYBOARD_GPIO, I get it into off > > > mode... once per screen blank, for about a second. (Does CONFIG_KEYBOARD_GPIO also cause > > > problems for you?) > > > > > > Any idea why it enters off mode only once after each screenblank? > > > > After disabling CONFIG_PROVE_LOCKING, loading the LCD modules, and > > blanking the screen, my n900 hits off mode just fine about once > > a second. Sounds like you still have some extra devices enabled > > causing it. > > I checked again... also with vanilla 4.6-rc2 to double check... same effect. > > Aha, got it... cat-ing /sys/kernel/debug/pm_debug/count breaks the > off mode. If I don't do that (tm), it seems to work way better. Ah I see yeah :) Regards, Tony
next prev parent reply other threads:[~2016-04-18 23:47 UTC|newest] Thread overview: 120+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-01-23 12:10 N900 sleep mode (in 4.5-rc0, if that matters) Pavel Machek 2016-01-23 12:10 ` Pavel Machek 2016-01-25 16:33 ` Tony Lindgren 2016-01-25 16:33 ` Tony Lindgren 2016-01-25 22:23 ` Pavel Machek 2016-01-25 22:23 ` Pavel Machek 2016-01-25 22:50 ` Tony Lindgren 2016-01-25 22:50 ` Tony Lindgren 2016-01-26 14:00 ` Pavel Machek 2016-01-26 14:00 ` Pavel Machek 2016-01-26 17:25 ` Tony Lindgren 2016-01-26 17:25 ` Tony Lindgren 2016-01-26 22:51 ` Tony Lindgren 2016-01-26 22:51 ` Tony Lindgren 2016-01-30 20:02 ` Pavel Machek 2016-01-30 20:02 ` Pavel Machek 2016-01-30 20:14 ` Pavel Machek 2016-01-30 20:14 ` Pavel Machek 2016-01-30 22:15 ` Pavel Machek 2016-01-30 22:15 ` Pavel Machek 2016-02-01 18:13 ` Tony Lindgren 2016-02-01 18:13 ` Tony Lindgren 2016-02-01 21:17 ` Pavel Machek 2016-02-01 21:17 ` Pavel Machek 2016-02-01 22:11 ` Tony Lindgren 2016-02-01 22:11 ` Tony Lindgren 2016-02-04 5:35 ` Tony Lindgren 2016-02-04 5:35 ` Tony Lindgren 2016-02-07 21:37 ` Pavel Machek 2016-02-07 21:37 ` Pavel Machek 2016-02-07 21:37 ` Pavel Machek 2016-02-08 8:51 ` Pali Rohár 2016-02-08 8:51 ` Pali Rohár 2016-02-07 21:23 ` Pavel Machek 2016-02-07 21:23 ` Pavel Machek 2016-02-09 17:24 ` Tony Lindgren 2016-02-09 17:24 ` Tony Lindgren 2016-02-09 17:38 ` Tony Lindgren 2016-02-09 17:38 ` Tony Lindgren 2016-03-20 8:38 ` Pavel Machek 2016-03-20 8:38 ` Pavel Machek 2016-02-11 1:08 ` Tony Lindgren 2016-02-11 1:08 ` Tony Lindgren 2016-02-11 1:08 ` Tony Lindgren 2016-03-23 14:37 ` Pavel Machek 2016-03-23 14:37 ` Pavel Machek 2016-03-20 8:33 ` Pavel Machek 2016-03-20 8:33 ` Pavel Machek 2016-03-23 12:38 ` Pavel Machek 2016-03-23 12:38 ` Pavel Machek 2016-03-30 19:12 ` Tony Lindgren 2016-03-30 19:12 ` Tony Lindgren 2016-04-04 11:09 ` Pali Rohár 2016-04-04 11:09 ` Pali Rohár 2016-04-04 22:31 ` Tony Lindgren 2016-04-04 22:31 ` Tony Lindgren 2016-04-04 21:30 ` Pavel Machek 2016-04-04 21:30 ` Pavel Machek 2016-04-04 22:07 ` Tony Lindgren 2016-04-04 22:07 ` Tony Lindgren 2016-04-05 10:09 ` Pavel Machek 2016-04-05 10:09 ` Pavel Machek 2016-04-05 13:17 ` Pavel Machek 2016-04-05 13:17 ` Pavel Machek 2016-04-05 14:22 ` 4.4: camera and unlock buttons produce tons of interrupts (was Re: N900 sleep mode) Pavel Machek 2016-04-05 14:22 ` Pavel Machek 2016-04-05 15:29 ` Tony Lindgren 2016-04-05 15:29 ` Tony Lindgren 2016-04-05 20:51 ` Pavel Machek 2016-04-05 20:51 ` Pavel Machek 2016-04-07 17:40 ` Tony Lindgren 2016-04-07 17:40 ` Tony Lindgren 2016-04-07 19:48 ` 4.4, 4.6: " Pavel Machek 2016-04-07 19:48 ` Pavel Machek 2016-04-07 21:32 ` Tony Lindgren 2016-04-07 21:32 ` Tony Lindgren 2016-04-07 23:01 ` Pavel Machek 2016-04-07 23:01 ` Pavel Machek 2016-04-07 23:41 ` Tony Lindgren 2016-04-07 23:41 ` Tony Lindgren 2016-04-08 9:19 ` Pavel Machek 2016-04-08 9:19 ` Pavel Machek 2016-04-11 8:27 ` 4.6-rc2: regression with omap video and lockdep (was Re: 4.4, 4.6: camera and unlock buttons produce tons of interrupts (was Re: N900 sleep mode)) Pavel Machek 2016-04-11 8:27 ` Pavel Machek 2016-04-11 9:30 ` 4.4, 4.6: camera and unlock buttons produce tons of interrupts (was Re: N900 sleep mode) Pavel Machek 2016-04-11 9:30 ` Pavel Machek 2016-04-11 9:41 ` Pavel Machek 2016-04-11 9:41 ` Pavel Machek 2016-04-11 21:10 ` Tony Lindgren 2016-04-11 21:10 ` Tony Lindgren 2016-04-12 12:16 ` Nokia N900 retention mode in v4.6, camera buttons fun Pavel Machek 2016-04-12 12:30 ` Pavel Machek 2016-04-12 12:30 ` Pavel Machek 2016-04-12 16:30 ` Tony Lindgren 2016-04-12 16:30 ` Tony Lindgren 2016-04-13 5:52 ` Tomi Valkeinen 2016-04-13 5:52 ` Tomi Valkeinen 2016-04-13 5:52 ` Tomi Valkeinen 2016-04-13 15:15 ` Tony Lindgren 2016-04-13 15:15 ` Tony Lindgren 2016-04-17 17:55 ` Pavel Machek 2016-04-17 17:55 ` Pavel Machek 2016-04-18 23:47 ` Tony Lindgren [this message] 2016-04-18 23:47 ` Tony Lindgren 2016-04-21 13:04 ` Pali Rohár 2016-04-21 13:04 ` Pali Rohár 2016-04-21 21:28 ` Pavel Machek 2016-04-21 21:28 ` Pavel Machek 2016-04-22 7:05 ` Pali Rohár 2016-04-22 7:05 ` Pali Rohár 2016-04-29 20:06 ` Sebastian Reichel 2016-04-29 20:06 ` Sebastian Reichel 2016-05-01 8:52 ` Pavel Machek 2016-05-01 8:52 ` Pavel Machek 2016-05-01 15:48 ` Sebastian Reichel 2016-05-01 15:48 ` Sebastian Reichel 2016-05-02 20:12 ` Sebastian Reichel 2016-05-02 20:12 ` Sebastian Reichel 2016-05-28 11:09 ` Pavel Machek 2016-05-28 11:09 ` Pavel Machek
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