On 01/28/2015 02:45 PM, Stewart Smith wrote: > Preeti U Murthy <[email protected]> writes: >> The device tree now exposes the residency values for different idle states. >> Read >> these values instead of calculating residency from the latency values. The >> values >> exposed in the DT are validated for optimal power efficiency. However to >> maintain >> compatibility with the older firmware code which does not expose residency >> values, use default values as a fallback mechanism. While at it, handle some >> cleanups. > > From a "I just merged the patch that exports these values from firmware" > point of view, using them and falling back looks good. > > (I find the hardcoding of snooze in the driver a bit odd, as is the
Snooze is the only software defined idle state, the rest are platform specific. The first idle state is usually associated with some sort of a polling operation and each architecture has a variant to this. This is why we end up hard-coding this idle state in the driver as far as my understanding goes. > hardcoding of max power states to 8 - which could bite us in the future Hmm.. not sure about this. Need to check. > if a future processor has more states... but these aren't problems with > this patch) > > Acked-by: Stewart Smith <[email protected]> Thanks! Regards Preeti U Murthy > _______________________________________________ Linuxppc-dev mailing list [email protected] https://lists.ozlabs.org/listinfo/linuxppc-dev
