On Monday 12 October 2015 23:07:28 Robert Jarzmik wrote: > Arnd Bergmann <a...@arndb.de> writes:
> > The z2 in particular never did, except in the powerdown handler. So if it > > is unable to wake up reliably from DEEPSLEEP, that may be a reason to use > > that flag only in the poweroff function but not during normal operation. > My first thought was : > This flag's only use is for Suspend to RAM. There might be special > wirings where the voltage to the RAM is provided out of SYS_EN pin > control, and therefore PWRMODE_DEEPSLEEP is possible. But the most > common pattern would be a PMIC, providing voltage to the DRAM through > Vcc_Mem. > > But having a closer look, you're right, I have misunderstood the way z2 > poweroff > was designed. The setting of poweroff to PWRMODE_DEEPSLEEP + > pxa27x_cpu_pm_enter() is a whole, it is the closest to a platform halt where > no > external chip handles the poweroff phase, and memory is shutdown in deep > sleep. > > Therefore I'll drop Thierry's patch (which would actually break suspend to > RAM I > think) and take yours. Ok, sounds good. thanks! Arnd -- 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/