RE: omap3: pm: AVS enabled by default?

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> -----Original Message-----
> From: linux-omap-owner@xxxxxxxxxxxxxxx 
> [mailto:linux-omap-owner@xxxxxxxxxxxxxxx] On Behalf Of Andrew Murray
> Sent: Thursday, January 28, 2010 7:53 PM
> To: linux-omap@xxxxxxxxxxxxxxx
> Subject: omap3: pm: AVS enabled by default?
> 
> Hello,
> 
> I noticed that Smart Reflex AVS is not turned on by default - and must
> be manually enabled from user-land through the sr_vddX_autocomp
> controls.
> 
> Are there any plans to enable this by default, or perhaps via 
> a KConfig
> option in the future?
> 
> I ask because the longer a boot time, the longer the device is running
> without AVS (assuming it's not enabled by a boot loader) - and on a
> mobile device with frequent power on/offs this duration could add up
> leading to a potential missed power saving? I appreciate the 
> saving may
> be small - but would it be worthwhile?

Andrew,

Some of the initial silicon revisions did not have the efuse data to
Required for AVS. I believe AVS is disabled - by default - to ensure
compatibility with these devices.

Best regards,
Sanjeev

> 
> Thanks,
> 
> Andrew Murray
> 
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