> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Kevin Hilman
> Sent: Thursday, October 09, 2008 8:15 PM
> To: Rajendra Nayak
> Cc: [email protected]
> Subject: Re: [PATCH 00/05] OMAP3: CPUidle driver
>
> Kevin Hilman <[EMAIL PROTECTED]> writes:
>
> > "Rajendra Nayak" <[EMAIL PROTECTED]> writes:
> >
> >> This patch set implements Cpuidle driver for OMAP3 platforms. It is
> >> validated on the 3430SDP (using the omap_3430sdp_min_defconfig) and
> >> applies on the pm-20081006 branch.
> >
> > Excellent. Thank you. I'll pull into pm-20081006 today.
> >
> > One question: You have C6 to hit chip-off, but it is never enabled.
> > Has this been tested? Enabling it allows me to hit chip OFF, but it
> > never comes back from OFF-mode. I will push some patches
> to make this
> > work with /sys/power/enable_off_mode.
>
> I got this to work on custom HW, but not on 3430SDP. Can you confirm
> whether or not you can use C6 on 3430SDP? Off-in-idle without CPUidle
> seems to work, but not with CPUidle + C6.
>
>
Hi Kevin,
With just this patch below I could see that I was able to hit sysoff even
with CPUidle.
Doing this I could see the SYSOFF LED toggle..
# echo -n 1 > /sys/power/clocks_off_while_idle
# echo -n 1 > /sys/power/sleep_while_idle
# echo -n 1 > /sys/power/voltage_off_while_idle
# echo -n 1 > /sys/power/enable_off_mode
And doing this stops the toggle..
# echo -n 0 > /sys/power/enable_off_mode
Was there any other issue you saw with CPUidle + C6?
Rajendra
---
arch/arm/mach-omap2/cpuidle34xx.c | 2 +-
1 files changed, 1 insertion(+), 1 deletion(-)
Index: linux-omap-2.6/arch/arm/mach-omap2/cpuidle34xx.c
===================================================================
--- linux-omap-2.6.orig/arch/arm/mach-omap2/cpuidle34xx.c 2008-10-14
14:46:21.000000000 +0530
+++ linux-omap-2.6/arch/arm/mach-omap2/cpuidle34xx.c 2008-10-14
14:46:24.000000000 +0530
@@ -191,7 +191,7 @@ void omap_init_power_states(void)
CPUIDLE_FLAG_CHECK_BM;
/* C6 . MPU OFF + Core OFF */
- omap3_power_states[OMAP3_STATE_C6].valid = 0;
+ omap3_power_states[OMAP3_STATE_C6].valid = 1;
omap3_power_states[OMAP3_STATE_C6].type = OMAP3_STATE_C6;
omap3_power_states[OMAP3_STATE_C6].sleep_latency = 10000;
omap3_power_states[OMAP3_STATE_C6].wakeup_latency = 30000;
>
> > Some minor problems that I will fixup when rebasing to the next pm
> > branch:
> >
> > - You removed C0, but all the comments still refer to it
> > - /sys/power/enable_off_mode doesn't affect off-mode states
> > in CPUidle
> >
> > patch 1:
> > - I still don't like the #ifdefs for the init sequence.
> >
> > patch 2:
> > - checkpatch warning
> >
> > Kevin
> >
> >> The following C states are defined and used
> >>
> >> * C0 . System executing code (Not an idle state)
> >> * C1 . MPU WFI + Core active
> >> * C2 . MPU CSWR + Core active
> >> * C3 . MPU OFF + Core active
> >> * C4 . MPU CSWR + Core CSWR
> >> * C5 . MPU OFF + Core CSWR
> >> * C6 . MPU OFF + Core OFF
> >>
> >> CPUidle support is not enabled by default in any of the
> defconfigs and hence has to enabled seperately
> >> if you plan to test these patches.
> >>
> >> CPUIdle ---> [*] CPU idle PM support
> >>
> >> regards,
> >> Rajendra
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