On Thu, Sep 23, 2010 at 11:05 AM, Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx> wrote: > Laine Walker-Avina <lwalkera@xxxxxxxxx> writes: > >> I'm having some troubles putting my OMAP3503(the one without the DSP >> or SGX modules) board to sleep. I'm using the current master on the >> l-o git repository. > > Looks like you're wanting to use off-mode. ÂThere are many drivers that > do not yet support off mode, as they need to do context save/restore in > their suspend/resume paths in order to support off mode. > > In particular, MMC in l-o master does not yet have this support, so you > should not expect MMC to work after an off mode transition. > > This is why off-mode is disabled by default, it has to be manually > enabled by: echo 1 > /debug/pm_debug/enable_off_mode. > > Do things work as expected if you leave off-mode disabled? > >> This is the output from dmesg and the count file after suspending >> twice. The first time it wakes immediately after going down, and the >> second time stays asleep but says that the core domain didn't enter >> OFF mode. > > This is not easy to debug with the current kernel dump. > > The way I suggest debugging this is by first getting to a minimal kernel > that can suspend/resume as you expect. ÂThen you add in the drivers to > see which one is causing the problem, or keeping the system away. > > Clearly the MMC driver has some problems in it's suspend/resume hooks > with unbalanced regulator enable/disables, so for starters, I'd suggest > disabling MMC. ÂI'd also suggest disabling musb, but basically the best > way is to disable everything except a minimal kernel, and then work back > up to the config you want. > > You might try using my PM branch (link below) which comes with a minimal > kernel config for this purpose: omap3_pm_defconfig. > >> In either case, the SYS_OFF_MODE signal never asserts. I added some >> debug code into map_sram_idle() to capture CM_CORE_IDLEST1 and 3 right >> before it jumps to the final sleep code in SRAM. > > For looking at the idlest regs, you might want to try the patch from my > pm-debug branch (included in my pm branch) which takes a snapshot of all > the PM registers just before SRAM idle and right after resume. ÂYou can > then see the registers using debugfs. ÂThis is documented on the OMAP PM > wiki: > > Â Â Âhttp://elinux.org/OMAP_Power_Management > > Hope that helps a little, > > Kevin > -- > To unsubscribe from this list: send the line "unsubscribe linux-omap" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at Âhttp://vger.kernel.org/majordomo-info.html > Hi Kevin, Thanks for the help. :) I recompiled the kernel without anything but UART support like you said. I applied the debug patch and the results follow. The processor seems to go into OFF mode according the dmesg output, but the SYS_OFF_MODE pin doesn't change state. Any thoughts? Also, is the MMC driver being worked on to make it suspend/resume compliant? I recall that I was able to at least go into retention with the MMC as the root FS earlier. root@spark:/debug/pm_debug$ echo mem > /sys/power/state [ 209.520324] PM: Syncing filesystems ... done. [ 209.525787] PM: Preparing system for mem sleep [ 209.530944] Freezing user space processes ... (elapsed 0.02 seconds) done. [ 209.559204] Freezing remaining freezable tasks ... (elapsed 0.02 seconds) done. [ 209.590545] PM: Entering mem sleep [ 209.594177] Suspending console(s) (use no_console_suspend to debug) [ 209.600982] platform reg-dummy: preparing suspend [ 209.601318] platform omapdss: preparing suspend [ 209.601409] reg-fixed-voltage reg-fixed-voltage.1: preparing suspend [ 209.601501] platform nop_usb_xceiv: preparing suspend [ 209.601623] serial8250 serial8250.0: preparing suspend [ 209.601715] serial8250 serial8250.1: preparing suspend [ 209.601806] serial8250 serial8250.2: preparing suspend [ 209.601898] platform arm-pmu.0: preparing suspend [ 209.604217] platform mpu.0: preparing suspend [ 209.604339] platform iva.0: preparing suspend [ 209.604461] platform l3_main.0: preparing suspend [ 209.604583] serial8250 serial8250: preparing suspend [ 209.607818] serial8250 serial8250: suspend [ 209.608001] platform l3_main.0: suspend [ 209.608123] platform iva.0: suspend [ 209.608245] platform mpu.0: suspend [ 209.611083] platform arm-pmu.0: suspend [ 209.611236] serial8250 serial8250.2: suspend [ 209.611663] serial8250 serial8250.1: suspend [ 209.611846] serial8250 serial8250.0: suspend [ 209.612030] platform nop_usb_xceiv: suspend [ 209.612152] reg-fixed-voltage reg-fixed-voltage.1: suspend [ 209.612274] platform omapdss: suspend [ 209.612609] platform reg-dummy: suspend [ 209.612854] PM: suspend of devices complete after 6.778 msecs [ 209.614685] serial8250 serial8250: LATE suspend [ 209.614746] platform l3_main.0: LATE suspend [ 209.614776] platform iva.0: LATE suspend [ 209.614807] platform mpu.0: LATE suspend [ 209.615020] platform arm-pmu.0: LATE suspend [ 209.615051] serial8250 serial8250.2: LATE suspend [ 209.615081] serial8250 serial8250.1: LATE suspend [ 209.615112] serial8250 serial8250.0: LATE suspend [ 209.615142] platform nop_usb_xceiv: LATE suspend [ 209.615173] reg-fixed-voltage reg-fixed-voltage.1: LATE suspend [ 209.615203] platform omapdss: LATE suspend [ 209.615264] platform reg-dummy: LATE suspend [ 209.615325] PM: late suspend of devices complete after 2.412 msecs [ 220.011688] sdrc_pwr before:00000129 now:00000129 [ 220.011749] Successfully put all powerdomains to target state [ 220.012115] platform reg-dummy: EARLY resume [ 220.012176] platform omapdss: EARLY resume [ 220.012207] reg-fixed-voltage reg-fixed-voltage.1: EARLY resume [ 220.012237] platform nop_usb_xceiv: EARLY resume [ 220.012268] serial8250 serial8250.0: EARLY resume [ 220.012298] serial8250 serial8250.1: EARLY resume [ 220.012329] serial8250 serial8250.2: EARLY resume [ 220.012359] platform arm-pmu.0: EARLY resume [ 220.012573] platform mpu.0: EARLY resume [ 220.012603] platform iva.0: EARLY resume [ 220.012634] platform l3_main.0: EARLY resume [ 220.012664] serial8250 serial8250: EARLY resume [ 220.012847] PM: early resume of devices complete after 0.793 msecs [ 220.012969] irqstatus 00000200 [ 220.013488] platform reg-dummy: resume [ 220.013793] platform omapdss: resume [ 220.013885] reg-fixed-voltage reg-fixed-voltage.1: resume [ 220.014007] platform nop_usb_xceiv: resume [ 220.014099] serial8250 serial8250.0: resume [ 220.014617] serial8250 serial8250.1: resume [ 220.014801] serial8250 serial8250.2: resume [ 220.022766] platform arm-pmu.0: resume [ 220.024688] platform mpu.0: resume [ 220.024780] platform iva.0: resume [ 220.024871] platform l3_main.0: resume [ 220.024993] serial8250 serial8250: resume [ 220.026458] PM: resume of devices complete after 13.128 msecs [ 220.027740] serial8250 serial8250: completing resume [ 220.027862] platform l3_main.0: completing resume [ 220.027954] platform iva.0: completing resume [ 220.028045] platform mpu.0: completing resume [ 220.029785] platform arm-pmu.0: completing resume [ 220.029907] serial8250 serial8250.2: completing resume [ 220.029998] serial8250 serial8250.1: completing resume [ 220.030426] serial8250 serial8250.0: completing resume [ 220.030548] platform nop_usb_xceiv: completing resume [ 220.030639] reg-fixed-voltage reg-fixed-voltage.1: completing resume [ 220.030731] platform omapdss: completing resume [ 220.031005] platform reg-dummy: completing resume [ 220.393035] PM: Finishing wakeup. [ 220.396423] Restarting tasks ... done. root@spark:/debug/pm_debug$ cat registers/1 MOD: CM_IVA2 (48014000) 04 => 00000011 20 => 00000001 34 => 00000001 40 => 00080000 44 => 00000001 48 => 00000003 MOD: CM_OCP (48004800) 00 => 00000010 10 => 00000001 MOD: CM_MPU (48004900) 04 => 00000077 24 => 00000001 34 => 00000001 40 => 0010fa05 44 => 00000001 48 => 00000003 4c => 00000001 MOD: CM_CORE (48004a00) 10 => 00000042 20 => ffffffbd 24 => 0000001f 28 => 0000000d 30 => fffffed9 34 => 0000001f 38 => 0000000c 40 => 0000030a 48 => 0000003f 4c => 00000003 MOD: CM_SGX (48004b00) MOD: CM_WKUP (48004c00) 10 => 0000000e 20 => 000002f1 30 => 0000003f 40 => 00000015 MOD: CM_CCR (48004d00) 00 => 00770007 04 => 00000011 20 => 00000003 30 => 00000001 34 => 00000001 40 => 08a60500 44 => 0000d805 48 => 00000009 4c => 00003204 50 => 00000001 70 => 00000092 MOD: CM_DSS (48004e00) 20 => 00000003 30 => 00000001 40 => 00001009 48 => 00000003 MOD: CM_CAM (48004f00) 20 => 00000001 30 => 00000001 40 => 00000004 48 => 00000003 MOD: CM_PER (48005000) 10 => 0003e000 20 => 00001fff 30 => 0003ffff 40 => 000000ff 44 => 00000006 48 => 00000003 4c => 00000001 MOD: CM_EMU (48005100) 40 => 03020a50 48 => 00000001 MOD: CM_NEON (48005300) 48 => 00000003 MOD: CM_USB (48005400) 20 => 00000003 30 => 00000001 48 => 00000003 MOD: PRM_IVA2 (48316000) 50 => 00000007 e0 => 00ff0f04 f8 => 00000002 MOD: PRM_OCP (48306800) 04 => 00000010 14 => 00000001 18 => 00000010 1c => 00000201 MOD: PRM_MPU (48306900) 58 => 0000000c d4 => 00000012 e0 => 00030104 e4 => 000000c7 e8 => 000000c7 MOD: PRM_CORE (48306a00) 58 => 00000304 a0 => c33f9e18 a4 => c33ffe18 e0 => 000f0314 e4 => 000000f7 e8 => 000000f7 f0 => 00000004 f8 => 00000004 MOD: PRM_SGX (48306b00) MOD: PRM_WKUP (48306c00) a0 => 0001010b a4 => 0000010b b0 => 00010000 MOD: PRM_CCR (48306d00) 70 => 00000080 MOD: PRM_DSS (48306e00) a0 => 00000001 e0 => 00030104 MOD: PRM_CAM (48306f00) e0 => 00030104 MOD: PRM_PER (48307000) 58 => 0000000c a0 => 0003e007 a4 => 0003e807 c8 => 00000006 e0 => 00030104 e4 => 00000007 e8 => 00000007 MOD: PRM_EMU (48307100) 58 => 00000004 e4 => 00000100 MOD: PRM_GLBL (48307200) 38 => 00000018 54 => 00001006 58 => 00000001 60 => 0000000c 64 => 00000050 70 => 00000049 9c => 00000002 c4 => 00000001 e4 => 00000001 MOD: PRM_NEON (48307300) 58 => 0000000c c8 => 00000002 e0 => 00000004 e4 => 00000003 e8 => 00000003 MOD: PRM_USB (48307400) 58 => 00000008 a0 => 00000001 a4 => 00000001 a8 => 00000001 e0 => 00030104 root@spark:/debug/pm_debug$ cat registers/2 MOD: CM_IVA2 (48014000) 04 => 00000011 20 => 00000001 40 => 00080000 44 => 00000001 MOD: CM_OCP (48004800) 00 => 00000010 10 => 00000001 MOD: CM_MPU (48004900) 04 => 00000077 24 => 00000001 34 => 00000001 40 => 0010fa05 44 => 00000001 4c => 00000001 MOD: CM_CORE (48004a00) 10 => 0000004a 20 => ffffffbd 24 => 0000001f 28 => 0000000d 30 => 00000008 40 => 0000030a 4c => 00000003 MOD: CM_SGX (48004b00) MOD: CM_WKUP (48004c00) 20 => 000002ff 40 => 00000015 MOD: CM_CCR (48004d00) 00 => 00770007 04 => 00000011 20 => 00000003 30 => 00000001 40 => 08a60500 44 => 0000d805 48 => 00000009 50 => 00000001 70 => 00000003 MOD: CM_DSS (48004e00) 20 => 00000003 40 => 00001010 MOD: CM_CAM (48004f00) 20 => 00000001 40 => 00000010 MOD: CM_PER (48005000) 20 => 0003ffff MOD: CM_EMU (48005100) 40 => 10100a50 48 => 00000002 4c => 00000001 MOD: CM_NEON (48005300) MOD: CM_USB (48005400) 20 => 00000003 MOD: PRM_IVA2 (48316000) 50 => 00000007 e0 => 00ff0f04 f8 => 00000002 MOD: PRM_OCP (48306800) 04 => 00000010 14 => 00000001 18 => 00000210 1c => 00000201 MOD: PRM_MPU (48306900) 58 => 0000000c d4 => 00000012 e0 => 00030104 e4 => 000000c7 MOD: PRM_CORE (48306a00) 58 => 00000304 a0 => c33f9e18 a4 => c33ffe18 e0 => 000f0314 e4 => 000000f7 f0 => 00000004 f8 => 00000004 MOD: PRM_SGX (48306b00) MOD: PRM_WKUP (48306c00) a0 => 0000010b a4 => 0000010b b0 => 00010100 MOD: PRM_CCR (48306d00) 70 => 00000080 MOD: PRM_DSS (48306e00) a0 => 00000001 e0 => 00030104 MOD: PRM_CAM (48306f00) e0 => 00030104 MOD: PRM_PER (48307000) 58 => 0000000c a0 => 0003e007 a4 => 0003e807 c8 => 00000006 e0 => 00030104 MOD: PRM_EMU (48307100) 58 => 00000004 e4 => 00000103 MOD: PRM_GLBL (48307200) 38 => 00000018 54 => 00001006 58 => 00000001 60 => 0000000c 64 => 00000050 70 => 00000049 9c => 00000002 c4 => 00000001 e4 => 00000001 MOD: PRM_NEON (48307300) 58 => 0000000c c8 => 00000002 e0 => 00000004 e4 => 00000003 MOD: PRM_USB (48307400) 58 => 00000008 a0 => 00000001 a4 => 00000001 a8 => 00000001 e0 => 00030104 root@spark:/debug/pm_debug$ cat registers/current MOD: CM_IVA2 (48014000) 04 => 00000011 20 => 00000001 34 => 00000001 40 => 00080000 44 => 00000001 48 => 00000003 MOD: CM_OCP (48004800) 00 => 00000010 10 => 00000001 MOD: CM_MPU (48004900) 04 => 00000077 24 => 00000001 34 => 00000001 40 => 0010fa05 44 => 00000001 48 => 00000003 4c => 00000001 MOD: CM_CORE (48004a00) 00 => 00006000 10 => 00006042 20 => ffff9fbd 24 => 0000001f 28 => 0000000d 30 => fffffed9 34 => 0000001f 38 => 0000000c 40 => 0000030a 48 => 0000003f 4c => 00000003 MOD: CM_SGX (48004b00) MOD: CM_WKUP (48004c00) 10 => 0000000e 20 => 000002f1 30 => 0000003f 40 => 00000015 MOD: CM_CCR (48004d00) 00 => 00770007 04 => 00000011 20 => 0000020b 30 => 00000001 34 => 00000001 40 => 08a60500 44 => 0000d805 48 => 00000009 4c => 00003204 50 => 00000001 70 => 00000092 MOD: CM_DSS (48004e00) 20 => 00000003 30 => 00000001 40 => 00001009 48 => 00000003 MOD: CM_CAM (48004f00) 20 => 00000001 30 => 00000001 40 => 00000004 48 => 00000003 MOD: CM_PER (48005000) 00 => 00000800 10 => 0003e800 20 => 000017ff 30 => 0003ffff 40 => 000000ff 44 => 00000006 48 => 00000003 4c => 00000001 MOD: CM_EMU (48005100) 40 => 03020a50 48 => 00000001 MOD: CM_NEON (48005300) 48 => 00000003 MOD: CM_USB (48005400) 20 => 00000003 30 => 00000001 48 => 00000003 MOD: PRM_IVA2 (48316000) 50 => 00000007 e0 => 00ff0f04 f8 => 00000002 MOD: PRM_OCP (48306800) 04 => 00000010 14 => 00000001 18 => 00000010 1c => 00000201 MOD: PRM_MPU (48306900) 58 => 0000000c d4 => 00000012 e0 => 00030104 e4 => 000000c7 MOD: PRM_CORE (48306a00) 58 => 00000304 a0 => c33f9e18 a4 => c33ffe18 e0 => 000f0314 e4 => 000000f7 f0 => 00000004 f8 => 00000004 MOD: PRM_SGX (48306b00) MOD: PRM_WKUP (48306c00) a0 => 0000000b a4 => 0000010b MOD: PRM_CCR (48306d00) 70 => 00000080 MOD: PRM_DSS (48306e00) a0 => 00000001 e0 => 00030104 MOD: PRM_CAM (48306f00) e0 => 00030104 MOD: PRM_PER (48307000) 58 => 0000000c a0 => 0003e007 a4 => 0003e807 c8 => 00000006 e0 => 00030104 e4 => 00000007 MOD: PRM_EMU (48307100) 58 => 00000004 e4 => 00000100 MOD: PRM_GLBL (48307200) 38 => 00000018 54 => 00001006 58 => 00000001 60 => 0000000c 64 => 00000050 70 => 00000049 9c => 00000002 c4 => 00000001 e4 => 00000001 MOD: PRM_NEON (48307300) 58 => 0000000c c8 => 00000002 e0 => 00000004 e4 => 00000003 MOD: PRM_USB (48307400) 58 => 00000008 a0 => 00000001 a4 => 00000001 a8 => 00000001 e0 => 00030104 root@spark:/debug/pm_debug$ cat count usbhost_pwrdm (OFF),OFF:1,RET:1,INA:0,ON:1,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 sgx_pwrdm (OFF),OFF:1,RET:0,INA:0,ON:0,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 per_pwrdm (ON),OFF:3,RET:0,INA:0,ON:4,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 dss_pwrdm (OFF),OFF:1,RET:1,INA:0,ON:1,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 cam_pwrdm (OFF),OFF:1,RET:1,INA:0,ON:1,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 core_pwrdm (ON),OFF:3,RET:0,INA:0,ON:4,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0,RET-MEMBANK2-OFF:0 neon_pwrdm (ON),OFF:3,RET:0,INA:0,ON:4,RET-LOGIC-OFF:0 mpu_pwrdm (ON),OFF:3,RET:0,INA:0,ON:4,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 iva2_pwrdm (OFF),OFF:1,RET:1,INA:0,ON:1,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0,RET-MEMBANK2-OFF:0,RET-MEMBANK3-OFF:0,RET-MEMBANK4-OFF:0 per_clkdm->per_pwrdm (9) usbhost_clkdm->usbhost_pwrdm (0) cam_clkdm->cam_pwrdm (0) dss_clkdm->dss_pwrdm (0) core_l4_clkdm->core_pwrdm (7) core_l3_clkdm->core_pwrdm (4) d2d_clkdm->core_pwrdm (0) sgx_clkdm->sgx_pwrdm (0) iva2_clkdm->iva2_pwrdm (0) neon_clkdm->neon_pwrdm (0) mpu_clkdm->mpu_pwrdm (0) prm_clkdm->wkup_pwrdm (0) cm_clkdm->core_pwrdm (0) Thanks, -- Laine Walker-Avina Firmware Engineer PASCO scientific -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
