Re: [PATCH v10 0/7] MFD: TWL4030: power script and workaround for erratum 27

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On Thu, Jun 2, 2011 at 8:36 AM, Steve Sakoman <sakoman@xxxxxxxxx> wrote:
> On Fri, May 6, 2011 at 6:17 AM, Lesly A M <leslyam@xxxxxx> wrote:
>> Patch series for TWL4030 power scripts for OMAP3 boards and
>> workaround for TWL erratum 27.
>>
>> Changes for implementing TWL4030 power scripts recommended by hardware team.
>> Introduced a new TWL4030 power script file, which can be used by different
>> OMAP3 board with the power companion chip TWL4030.
>>
>> Updated the changes for TWL4030 errata 27 & 28, and modified
>> the TWL4030 power script.
>> Workaround for TWL4030 erratum 27 is required for Si version less than or
>> equal to TWL5030 ES1.1.
>>
>> TWL4030 script changes re-based on Kevin's PM tree in pm branch.
>>
>> This patch series have a dependency with the patch:
>>        http://www.spinics.net/lists/linux-omap/msg50547.html
>>
>> Changes in v7:
>>        changes to fix Nishanth Menon's comments
>>                i) Added the workaround for TWL4030 Erratum 27
>>
>>        split the first patch in v6
>>                i)  fix for twl4030 script load
>>                ii) correct the warning print during script loading
>>
>>        Added new patch files
>>                i) changing sys_off signal polarity
>>
>> Changes in v8:
>>        updated the change logs
>>        moving the TWL IDCODE checking to twl-core.c
>>
>> Changes in V9:
>>        changes to fix David Derrick's comments
>>                i) turn OFF the NRES_PWRON resource in warm reset sequence
>>                ii) optimize the i2c writes during resource configuration
>>
>> Changes in V10:
>>        changes for Tony's comments
>>                i) making the TWL4030 power scripts loadable module
>>
>> Since the voltage layer is evolving to a new design, the voltage dependant
>> changes required for the TWL4030 script are not incorporated in the patch series.
>> So this TWL4030 script patch series can be tested with a separate patch for
>> voltage layer changes.
>>
>>        link: http://pastebin.mozilla.org/1219625
>>
>> This changes are tested on OMAP3430 & OMAP3630 SDP with off mode enabled in suspend path.
>>        Tested with suspend/resume script, which will test system suspend in a loop.
>>        Tested for more than 1000 iterations.
>>        Also tested the reboot with WRM_RST button & reboot command.
>
> I've tested this series on Overo and it seems to have no effect.
>
> After 'echo mem > /sys/power/state' my system draws 53mA both with and
> without the above patch set.
>
> Has anyone else confirmed these changes on a platform other than the SDP?

I suppose I should add my assumptions in testing:

- CONFIG_TWL4030_SCRIPT needs to be turned on in omap2plus_defconfig
- no board changes are required

Correct assumptions?

Steve
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