Re: SRF Fixes

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On ke, 2008-10-29 at 10:30 +0200, ext Kalle Jokiniemi wrote:
> Hi,
> 
> We have been testing the SRF patches (sent by Rajendra on 16th-Oct) now,
> and some issues were found. The following patch corrects some of them,
> these issues remain:      
> 
> 1. Handling enable_off_mode sysfs switches is not supported in this patch.
> I'm planning to add a new interface into the generic shared resource fw 
> to enable refreshing power domain states, when such changes take place.

OK, I have an implementation for supporting the enable_off_mode
swithcing. I'll send a updated patch soon.

regards,
Kalle

> 
> 2. Non platform devices won't be able to add power domain wake-up latency 
> requirements. The srf interface has a device pointer parameter, which the
> following patch uses to get platform_device pointer. This pdev is required
> by the omapdev interface for finding the respective power domain. The 
> aquisition of platform_device pointer is done via container_of macro, which
> may cause crashes if the device pointer does not have a platform device
> container.
> 
> Any comments on how to make this better are welcome. I think that if   
> the SRF interface would accept a platform_device pointer instead of
> device pointer the problem would solve. I have a check in my patch that 
> checks for NULL pointer in pdev->name, but this won't work always. 
> 
> 3. Seems that device hangs if MPU, NEON and CORE power domains hit OFF
> mode, while other power domains are in retention. We suspect PER in 
> retention + CORE in OFF would be the most likely cause of trouble,
> this is being looked into.
> 
> regards,
> Kalle Jokiniemi
> 
> 
> 
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