From mboxrd@z Thu Jan 1 00:00:00 1970 From: khilman@kernel.org (Kevin Hilman) Date: Thu, 09 Oct 2014 15:59:55 -0700 Subject: [PATCH v9 0/2] Adds PMU and S2R support for exynos5420 In-Reply-To: <7hbnpknc98.fsf@deeprootsystems.com> (Kevin Hilman's message of "Thu, 09 Oct 2014 14:50:43 -0700") References: <1412673723-15551-1-git-send-email-vikas.sajjan@samsung.com> <7hiojuno9e.fsf@deeprootsystems.com> <7hbnpknc98.fsf@deeprootsystems.com> Message-ID: <7hh9zcluhg.fsf@deeprootsystems.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Kevin Hilman 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.) Kevin [1] [ 47.644273] cros-ec-spi spi2.0: EC failed to respond in time [ 47.648535] cros-ec-spi spi2.0: spi transfer failed: -110 [ 47.653866] tps65090-charger tps65090-charger: tps65090_charger_isr(): Error in reading reg 0xa [2] CONFIG_CPU_IDLE=y CONFIG_ARM_BIG_LITTLE_CPUIDLE=y CONFIG_ARM_EXYNOS_CPUIDLE=n