Hi Kevin, On Fri, Oct 10, 2014 at 4:29 AM, Kevin Hilman <khilman@xxxxxxxxxx> wrote: > Kevin Hilman <khilman@xxxxxxxxxx> writes: > > [...] > >> Trying $SUBJECT series on top of kukjin's for-next is working fine, but >> I'm still not able to make it work on linux-next, with or without the >> CLK_IGNORE_UNUSED patch. > > Nevermind, turns out I didn't apply the CLK_IGNORE_UNUSED PATCH. If I > actually apply it, I have it working on top of linux-next. However, it > seems to have some issues with the nonboot CPUs resuming: > > [ 11.319833] Enabling non-boot CPUs ... > [ 12.319134] CPU1: failed to come online > [ 12.319235] Error taking CPU1 up: -5 > [ 13.319137] CPU2: failed to come online > [ 13.319209] Error taking CPU2 up: -5 > [ 14.319133] CPU3: failed to come online > [ 14.319224] Error taking CPU3 up: -5 > > Are you guys seeing all the non-boot CPUs coming up? They fail to come > online, but the /sys/devices/.../cpu?/online reports that they are > online, which means the next attempt to hotplug them will probably BUG(). > > Also, If I turn off the switcher (enabled by default exynos_defconfig), > resume still has problems bringing all the nonboot CPUs online, and then > has a bunch of I2C errors[1]. > > And one more..., if I try enabling CPUidle[1] with exynos_defconfig, S2R > causes a reboot (seems to be on resume.) I tested S2R on my Peach-Pi (Exynos5800) on linux-next-20141009. My tree has: a57db95 TEMP: Use CLK_IGNORE_UNUSED for aclk200_disp1 18158ac ARM: EXYNOS: Use MCPM call-backs to support S2R on Exynos5420 d86cb2d ARM: exynos5: Add Suspend-to-RAM support for 5420 93f1b7c ARM: exynos5: Add PMU support for 5420 8dcc2db ARM: EXYNOS: Move PMU specific definitions from common.h 493a16a ARM: EXYNOS: Add platform driver support for Exynos PMU 64e73fb mfd: syscon: Decouple syscon interface from platform devices af7b574 Add linux-next specific files for 20141009 4658bc0 Merge branch 'akpm/master' 9784a19 mm: add strictlimit knob I have tested the following scenarios using exynos_defconfig with CONFIG_COMMON_CLK_MAX77802 enabled: 1) CONFIG_BIG_LITTLE enabled (default in exynos_defconfig) 2) CONFIG_BIG_LITTLE disabled 3) CONFIG_ARM_BIG_LITTLE_CPUIDLE enabled In all 3 cases the secondary cores as well as the system resume fine. Can you please confirm if your kernel has a similar configuration ? Regards, Abhilash -- 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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