Hi Daniel, On 25.06.2014 11:58, Daniel Drake wrote: > Hi Tomasz, > > On Tue, Jun 24, 2014 at 2:57 PM, Tomasz Figa <t.figa@xxxxxxxxxxx> wrote: >> ISP special clocks have dedicated gating registers and so MUX SRC_MASK >> register should not be used. This patch fixes the problem of >> Exynos4x12-based boards freezing on system suspend, because those >> mux outputs need not to be masked while suspending. > > Not sure if you will be interested in this, as your plate must be > pretty full already, and I am probably the first person to try > suspend/resume on ODROID, but: > > ODROID-U2 fails to suspend/resume. I am testing with rtcwake, trying > to raise a wakeup alarm on the internal Exynos4412 RTC. For this, > CONFIG_COMMON_CLK_MAX77686 must be disabled (otherwise it disables the > upstream 32KHz clock source for the RTC), I also have > CONFIG_RTC_DRV_MAX77686 disabled so that there is only one RTC to > worry about. > > Then: > rtcwake --utc -m mem -s 10 -v > > Before this patch, it would totally hang after calling cpu_suspend() > (checked with S3C_PMDBG) - not sure if it hangs before sleeping, or if > it sleeps but simply fails to wake up. > > With this patch, now it seems like the RTC alarm does wake up the > system after the desired time, however it immediately goes back into > uboot rather than resuming into Linux. So this patch does make some > progress at least. > > The power light is on at all times during these tests (not sure if > that means anything, but I was wondering if it should go out when the > system suspends). As far as I'm aware of, all Exynos4412-based ODROIDs run secure firmware, which needs special handling of suspend/resume. I already have a series to address this, but there is one more issue that I'd like to fix, until I send it. The patches should hit the ML this week, though. Best regards, Tomasz -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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