wad wrote: > > This is the current power distribution diagram for A-phase CL1B, > identifying what we can power, when, and how.
wad -- a few questions -- for some i can guess at the answer, but better to ask and be sure: - if there are no USB devices inserted, is there an advantage to powering down USB? i.e., does it affect anything more than the devices themselves? - same question for SD? - the keyboard/touchpad are now optionally powered in suspend and run. do you have a specific use case in mind? the only case i can think of is turning them off if we're suspended and don't want their wakeups anyway. - will we have (approximate) numbers at some point for how much power any given subsystem takes? (e.g., for the above case, how much would powering down the kbd/tpad save? this will inform decisions like "how much effort is it worth?") - i can't believe i'm asking this, but is it feasible to only power half the ram? would that help the power budget? i have no idea how that feature would be put to use. or, perhaps more manageable: half the flash? if half were unmounted when not in use, for instance. - comparing with http://wiki.laptop.org/images/1/1c/Tinderbox_C2.png (which i'm assuming is "correct" for XO-1), i see the audio amp could be powered down before. is that integral to the "HD Audio Codec" box now? - also comparing with that page, the RTC battery charger is always on now, and wasn't before. from our conversation on IRC, it sounds like the circuit hasn't changed -- is that right? (and that it's less a "charge" circuit than an "anti-discharge" circuit.) paul =--------------------- paul fox, p...@laptop.org _______________________________________________ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel