Hi, On Fri, Jan 27, 2012 at 11:00 AM, Sakari Ailus <sakari.ai...@iki.fi> wrote: > MPU and CORE should stay awake if there is CAM domain ACTIVE. This is > because that module doesn't have wake-up capability. > > The original patch was written by Jouni Högander in 2008 and this is the > last part left of it which is not in upstream yet. > > I wonder if the approach taken in the patch is valid these days; > nevertheless it seems to do the job... The code in the function omap3_enter_idle_bm from arch/arm/mach-omap2/cpuidle34xx.c is doing exactly the same thing: it is choosing the cpuidle safe_state if the CAM power domain is active.
Please note that this only works if CPU_IDLE is selected, which is needed to reach any decent low power mode. Regards, Jean > > Signed-off-by: Sakari Ailus <sakari.ai...@iki.fi> > --- > arch/arm/mach-omap2/pm34xx.c | 3 +++ > 1 files changed, 3 insertions(+), 0 deletions(-) > > diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c > index fc69875..4ef682d 100644 > --- a/arch/arm/mach-omap2/pm34xx.c > +++ b/arch/arm/mach-omap2/pm34xx.c > @@ -295,6 +295,9 @@ void omap_sram_idle(void) > pwrdm_clear_all_prev_pwrst(core_pwrdm); > pwrdm_clear_all_prev_pwrst(per_pwrdm); > > + if (pwrdm_read_pwrst(cam_pwrdm) == PWRDM_POWER_ON) > + clkdm_deny_idle(mpu_pwrdm->pwrdm_clkdms[0]); > + > mpu_next_state = pwrdm_read_next_pwrst(mpu_pwrdm); > switch (mpu_next_state) { > case PWRDM_POWER_ON: > -- > 1.7.2.5 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-omap" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html