Hi Geert,

On 21/09/16 09:53, Geert Uytterhoeven wrote:

Hi Jon,

On Tue, Sep 20, 2016 at 12:28 PM, Jon Hunter [off-list ref] wrote:

quoted

Some devices may require more than one PM domain to operate and this is
not currently by the PM domain framework. Furthermore, the current Linux
'device' structure only allows devices to be associated with a single PM
domain and so cannot easily be associated with more than one. To allow
devices to be associated with more than one PM domain, if multiple
domains are defined for a given device (eg. via device-tree), then:
1. Create a new PM domain for this device. The name of the new PM domain
   created matches the device name for which it was created for.
2. Register the new PM domain as a sub-domain for all PM domains
   required by the device.
3. Attach the device to the new PM domain.

This looks a suboptimal to me: if you have n devices sharing the same PM
domains, you would add n new subdomains?

BTW, would this be the case today for some renesas devices or are you
just pointing this out as something that could be optimised/improved?

Cheers
Jon

-- 
nvpublic