Re: [ANNOUNCE] new PM branch: pm-20081119

[Kevin Hilman <khilman@deeprootsystems.com>]

"Premi, Sanjeev" <premi@ti.com> writes:

> These are my observations on OMAP3EVM:
>
> 1) Very frequently I see these messages:
>
> <4>__ratelimit: 6736 callbacks suppressed
> __ratelimit: 6736 callbacks suppressed
> <3>omapfb omapfb: irq error status 00c2
> omapfb omapfb: irq error status 00c2
> <3>omapfb omapfb: irq error status 0060
> omapfb omapfb: irq error status 0060
> <3>omapfb omapfb: irq error status 00c2
> omapfb omapfb: irq error status 00c2
> <3>omapfb omapfb: irq error status 0060
> omapfb omapfb: irq error status 0060
> <3>omapfb omapfb: irq error status 00e2
> omapfb omapfb: irq error status 00e2
> <3>omapfb omapfb: irq error status 00c2
> omapfb omapfb: irq error status 00c2
> <3>omapfb omapfb: irq error status 0060
> omapfb omapfb: irq error status 0060
> <3>omapfb omapfb: irq error status 00e2
> omapfb omapfb: irq error status 00e2
> <3>omapfb omapfb: irq error status 00c2
> omapfb omapfb: irq error status 00c2
> <3>omapfb omapfb: irq error status 0060
> omapfb omapfb: irq error status 0060

Sanjeev,

For starters can you try with a minimal kernel (no drivers, no
framebuffer, etc.) 

The first goal is to hit retention and off with no drivers than start
moving out to address driver issues from there.

Kevin

> 2) Also:
> # echo mem > /sys/power/state
> <6>PM: Syncing filesystems ...
> PM: Syncing filesystems ...
> done.
> done.
> Freezing user space processes ... Freezing user space processes ... (elapsed 0.00 seconds) (elapsed 0.00 seconds) done.
> done.
> Freezing remaining freezable tasks ... Freezing remaining freezable tasks ... (elapsed 0.00 seconds) (elapsed 0.00 seconds) done.
> done.
>
> Suspending console(s) (use no_console_suspend to debug)
> Suspending console(s) (use no_console_suspend to debug)
> <3>omapfb omapfb: timeout waiting for FRAME DONE
>
> However, I the "resume" doesn't happen.
> Trying to debug further.
>
> Best regards,
> Sanjeev
>
>> On Thu, Nov 20, 2008 at 6:23 AM, Kevin Hilman 
>> <khilman@deeprootsystems.com> wrote:
>> > Hello,
>> >
>> > A new PM branch is available named pm-20081119.
>> >
>> > This is mostly a new set of patches on top of the previous 
>> PM branch, 
>> > rather than a rebase.  We finally found the root cause of some DPLL 
>> > relocking bugs.  Special thanks to Paul Walmsley and Tero 
>> Kristo for 
>> > debugging and fixing this problem.  Now the DPLL fix that 
>> was reverted 
>> > in the previous PM branch is re-applied as well as some 
>> fixes on top 
>> > of it.  It also has some additional UART fixes, so I think the UART 
>> > idle work is ready to go to Tony.  Special thanks to Jouni Hogander 
>> > for the extra testing and fixes here.
>> >
>> > The shortlog is below[1] and the root of the tree is still
>> > v2.6.27-omap1 + T2 power patches from Peter.
>> >
>> > This has primarily been tested on custom HW since I'm 
>> _still_ waiting 
>> > for my SDP to arrive.  I have boot tested on Beagle, but I 
>> think there 
>> > are still some problems with ES2 silicon.  On my ES2 
>> Beagle, neither 
>> > DSS or IVA will leave the ON state, even when all clocks in their 
>> > powerdomains are off.  I have not debugged this further yet.
>> >
>> > Functionally, this tree is in pretty good shape, so I will do some 
>> > bugfixes here when necessary, but will now spent some time 
>> focusing on 
>> > getting the patches in this branch merged into linux-omap.
>> >
>> > Kevin
>> >
>> >
>> > [1] git shortlog:
>> >
>> > Amit Kucheria (2):
>> >      OMAP: PM: Typo fix for clock_allow_idle
>> >      HSMMC: Make driver support dynamic idle
>> >
>> > Jouni Hogander (11):
>> >      OMAP3: PM: Use pwrdm_set_next_pwrst instead of 
>> set_pwrdm_state in idle loop
>> >      OMAP3: Do not set mpu, core, neon states if cpuidle is used
>> >      OMAP3: PM: Do not set next states sw to control those 
>> is available
>> >      OMAP3: PM: Always return value in pwrdms_setup
>> >      OMAP3: PM: Fix wrong sequence in suspend.
>> >      OMAP3: UART: Make sure that uart clocks are enabled when needed
>> >      OMAP3: PM: Check in set_pwrdm_state that target state 
>> is supported by pwrdm v2
>> >      OMAP3: PM: Do not build suspend code if SUSPEND is not enabled
>> >      OMAP: PM: Build fails if PM is not enabled
>> >      OMAP2: PM: Fix omap2 build
>> >      OMAP: MCSPI: Enable mcspi wake-up
>> >
>> > Kalle Jokiniemi (4):
>> >      OMAP: PM: sysfs interface for enabling voltage off in idle
>> >      OMAP3: PM: Fix cpu idle init sequencing
>> >      OMAP: SRF: Fixes to shared resource framework (Ver.3)
>> >      OMAP3: I2C: Enable I2C wakeups
>> >
>> > Kevin Hilman (16):
>> >      OMAP3: PM: Add wake-up bit defintiions for CONTROL_PADCONF_X
>> >      OMAP3: PM: Allow UARTs to be unclocked when inactive
>> >      8250: Allow platform to register PM hook
>> >      8250: when waking, PM hook should be called before 
>> accessing port
>> >      OMAP3: PM: UART: Add 8250 UART PM hook for suspend/resume
>> >      OMAP3: PM: UART save/restore support for OFF-mode
>> >      OMAP2/3: HSMMC: Ensure HSMMC is fully reset on boot
>> >      OMAP3: PM: CPUidle: obey enable_off_mode flag
>> >      OMAP3: PM: CPUidle: restrict C-states on UART activity
>> >      OMAP3: PM: decouple PER and CORE context save and restore
>> >      Revert "OMAP3 clock: fix non-CORE DPLL rate assignment bugs"
>> >      Revert "OMAP3: PM: Do not set next states sw to 
>> control those is available"
>> >      Revert "OMAP3: Do not set mpu, core, neon states if 
>> cpuidle is used"
>> >      OMAP: PM: UART: fix can_sleep hook to return correct value
>> >      OMAP: PM: UART: Only disable clocks in prepare-idle hook
>> >      OMAP3: PM: Check for UART wakeups in 'resume_idle' hook
>> >
>> > Paul Walmsley (14):
>> >      OMAP2/3 PM: create the OMAP PM interface and add a 
>> default OMAP PM no-op layer.
>> >      OMAP2/3 omapdev: add basic omapdev structure
>> >      OMAP242x omapdev: add OMAP242x omapdev records
>> >      OMAP243x omapdev: add OMAP243x omapdev records
>> >      OMAP3xxx omapdev: add OMAP3xxx omapdev records
>> >      OMAP2/3 omapdev: add code to walk the omapdev records
>> >      OMAP3 clock: fix non-CORE DPLL rate assignment bugs
>> >      OMAP3 powerdomains: remove RET from SGX power states list
>> >      OMAP3 powerdomains: remove RET from SGX power states list
>> >      OMAP3 clock: remove unnecessary dpll_data dereferences
>> >      OMAP3 clock: optimize DPLL rate rounding algorithm
>> >      OMAP3 clock: avoid invalid FREQSEL values during DPLL 
>> rate rounding
>> >      OMAP2/3 I2C: reprogram OCP_SYSCONFIG register after reset
>> >      OMAP: I2C: convert 'rev1' flag to generic 'rev' u8
>> >
>> > Peter 'p2' De Schrijver (9):
>> >      OMAP: PM counter infrastructure.
>> >      OMAP: PM: Hook into PM counters
>> >      OMAP: PM: Add closures to clkdm_for_each and pwrdm_for_each.
>> >      OMAP: PM: Add pm-debug counters
>> >      OMAP: PM debug: make powerdomains use PM-debug counters
>> >      OMAP: PM: Add definitions for ETK pads and 
>> observability registers
>> >      OMAP: Debug observability and ETK padconf implementation
>> >      OMAP: Add debug observablity (debobs) Kconfig item
>> >      OMAP: PM: Implement get_last_off_on_transaction_id()
>> >
>> > Rajendra Nayak (23):
>> >      OMAP3: PM: GPMC context save/restore
>> >      OMAP3: PM: GPIO context save/restore
>> >      OMAP3: PM: I2C context save/restore
>> >      OMAP3: PM: INTC context save/restore
>> >      OMAP3: PM: PRCM context save/restore
>> >      OMAP3: PM: Populate scratchpad contents
>> >      OMAP3: PM: SCM context save/restore
>> >      OMAP3: PM: SRAM restore function
>> >      OMAP3: PM: handle PER/NEON/CORE in idle
>> >      OMAP3: PM: Restore MMU table entry
>> >      OMAP3: PM: MPU off-mode support
>> >      OMAP3: PM: CORE domain off-mode support
>> >      OMAP3: PM: allow runtime enable/disable of OFF mode
>> >      OMAP3: 3430SDP minimal kernel defconfig
>> >      OMAP3: PM: CPUidle: Basic support for C1-C2
>> >      OMAP3: PM: CPUidle: Enables state C4
>> >      OMAP3: PM: CPUidle: Enables C3 and C5
>> >      OMAP3: PM: CPUidle: Safe-state on bm-activity
>> >      OMAP3: PM: CPUidle: Enable Kconfig option for OMAP
>> >      OMAP3 SRF: Generic shared resource f/w
>> >      OMAP3 SRF: MPU/CORE/PD latency modeling
>> >      OMAP3 SRF: omap3 srf driver
>> >      OMAP3 SRF: OMAP PM srf implementation
>> >
>> > Tero Kristo (13):
>> >      OMAP: PM debug: do not print out status for meta 
>> powerdomains (dpll*)
>> >      OMAP: PM debug: Add PRCM register dump support
>> >      OMAP: PM: DMA context save / restore
>> >      OMAP: PM: off-mode support for DMA on EMU/HS devices
>> >      OMAP3: SRAM size fix for HS/EMU devices
>> >      OMAP3 PM: off-mode support for HS/EMU devices
>> >      OMAP3: PM: Enable SDRAM auto-refresh during sleep
>> >      OMAP: SDRC: Add new register definitions for SDRAM controller
>> >      OMAP3: PM: SDRC auto-refresh workaround for off-mode
>> >      PM: Fix a bug with noncore dpll rate calculation
>> >      PM: Added three PLL registers to the PRCM context save
>> >      PM: OMAP3: Make sure clk_disable_unused() order is correct
>> >      PM: Changed secure RAM storage size from 0x8000 to 0x803F
>> >
>> > --
>> > To unsubscribe from this list: send the line "unsubscribe 
>> linux-omap" 
>> > in the body of a message to majordomo@vger.kernel.org More 
>> majordomo 
>> > info at  http://vger.kernel.org/majordomo-info.html
>> >
>> --
>> To unsubscribe from this list: send the line "unsubscribe 
>> linux-omap" in the body of a message to 
>> majordomo@vger.kernel.org More majordomo info at  
>> http://vger.kernel.org/majordomo-info.html
>> 
>>