Right now the performance govenor is the default frequency govenor on sunxi devices. This causes some general problems. When the cpu is idle the cpu runs with its maximum frequency. This causes a higher cpu temperature in the idle state. When the cpu is now under load the cpu gets with that higher idle temperature now faster to its thermal limits. An other big problem of the performace govenor is the missing thermal throttling. Some tests with cpuburn resulted in a system crash when the soc reached its thermal limits since no thermal throttling occurred.
With this patch we set the default frequency govenor to ondemand mode and reduce the temperature when the cpu is idle and activate the thermal throtteling. Signed-off-by: Philipp Rossak <embe...@gmail.com> --- arch/arm/configs/sunxi_defconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/configs/sunxi_defconfig b/arch/arm/configs/sunxi_defconfig index df433abfcb02..e5812851091c 100644 --- a/arch/arm/configs/sunxi_defconfig +++ b/arch/arm/configs/sunxi_defconfig @@ -14,6 +14,7 @@ CONFIG_CMA=y CONFIG_ARM_APPENDED_DTB=y CONFIG_ARM_ATAG_DTB_COMPAT=y CONFIG_CPU_FREQ=y +CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y CONFIG_CPUFREQ_DT=y CONFIG_VFP=y CONFIG_NEON=y -- 2.11.0
