On 01/21/2014 03:10 AM, Alexandre Courbot wrote: > Invoke the do_idle() firmware call before suspending a CPU so that the > underlying firmware (if any) can take necessary action.
> diff --git a/arch/arm/mach-tegra/cpuidle-tegra114.c > b/arch/arm/mach-tegra/cpuidle-tegra114.c > @@ -45,6 +46,8 @@ static int tegra114_idle_power_down(struct cpuidle_device > *dev, > > clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER, &dev->cpu); > > + call_firmware_op(do_idle); > + > cpu_suspend(0, tegra30_sleep_cpu_secondary_finish); > > clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_EXIT, &dev->cpu); Don't you need to have the kernel also *not* do something when entering idle; doesn't the FW op replace some of the register writes that the kernel would otherwise be doing? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
