Hi Krzysztof, I'm leaving for a long vacation (6w) today and didn't find the time to test your patch. I'd like to thank you for looking into this issue. I will we able to test this patch at my return. I do understand now (and with the following mail), that this hardware have problematic constraints that are specific to the Hardkernel integration. regards, Nicolas Le mardi 19 juillet 2016 à 13:29 +0200, Krzysztof Kozlowski a écrit : > On 07/15/2016 05:56 PM, Nicolas Dufresne wrote: > > Le vendredi 15 juillet 2016 à 16:33 +0200, Tobias Jakobi a écrit : > > > I can confirm that this indeed doesn't work. > > > > > > chidori ~ # echo 1 > /proc/sys/kernel/sysrq > > > chidori ~ # echo s > /proc/sysrq-trigger > > > chidori ~ # echo u > /proc/sysrq-trigger > > > chidori ~ # echo b > /proc/sysrq-trigger > > > <board hangs, only red power LED on> > > > > > > I guess Nicolas is seeing a different or another problem here > > > though. > > > > Well for me both method hangs. On an extra note, reset inside Uboot > > works, but reboot in Linux hang. I tried adding a trace > > in syscon_restart_handle(), but the trace is never displayed. I'm > > wondering if that handler is ever called, or if it's just that the > > serial console was shut down already. > > > > Any idea what else should I trace ? > > This is weird... reboot should work. Just to confirm it - can you > test > following patch in both scenarios (this should fix both of them... at > least on Odroid U3 but your board might have different SPL/BL1): > > -- >8 -- > diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi > b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi > index 58ad48e7b8f7..7d963d36e96d 100644 > --- a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi > +++ b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi > @@ -423,7 +423,8 @@ > > buck2_reg: BUCK2 { > regulator-name = "vdd_arm"; > - regulator-min-microvolt = <900000>; > + //regulator-min-microvolt = <900000>; > + regulator-min-microvolt = <1000000>; > regulator-max-microvolt = <1350000>; > regulator-always-on; > regulator-boot-on; > > > > -- 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