Andy Green wrote: > Which clock, SDIO external clock? We can gate it to only operate during > pending access like we did Glamo.
Yes, it's something that's probably safe to implement in the S3C MCI driver. Nothing else in the system needs to know about it. > It won't hurt GPS and it will block bulk of this 17mW I guess. Yes, when I stopped the clock by just forcing the pin low, I got the same current reduction (within measurement tolerances, i.e., about +/-1.5mA in this case) as when shutting down the driver completely. > So we explain the kernel policy for "turning off" WLAN is to either not > insert the modules, or modprobe -r them. For now, yes. Or to unbind it, if you want to avoid module insertion/removal overhead and make things work in a monolithic kernel as well. > We can take out the /sys if that claims to impact this then, and we're done? Yeah, I'll send you a patch that drops it from sysfs. We still need the internal mechanism to reset the module, but that can be a lot simpler. - Werner
