On Wed, Aug 30, 2017 at 03:41:19PM +0100, Dietmar Eggemann wrote: > The following 'capacity-dmips-mhz' dt property values are used: > > Cortex-A15: 1024, Cortex-A7: 539 > > They have been derived form the cpu_efficiency values: > > Cortex-A15: 3891, Cortex-A7: 2048 > > by scaling them so that the Cortex-A15s (big cores) use 1024. > > The cpu_efficiency values were originally derived from the "Big.LITTLE > Processing with ARM Cortex™-A15 & Cortex-A7" white paper > (http://www.cl.cam.ac.uk/~rdm34/big.LITTLE.pdf). Table 1 lists 1.9x > (3891/2048) as the Cortex-A15 vs Cortex-A7 performance ratio for the > Dhrystone benchmark. > > The following platforms are affected once cpu-invariant accounting > support is re-connected to the task scheduler: > > odroidxu3, odroidxu3-lite, odroidxu4 > > Cc: Rob Herring <robh+dt@xxxxxxxxxx> > Cc: Mark Rutland <mark.rutland@xxxxxxx> > Cc: Russell King <linux@xxxxxxxxxxxxxxx> > Cc: Kukjin Kim <kgene@xxxxxxxxxx> > Cc: Krzysztof Kozlowski <krzk@xxxxxxxxxx> > Signed-off-by: Dietmar Eggemann <dietmar.eggemann@xxxxxxx> > --- > arch/arm/boot/dts/exynos5422-cpus.dtsi | 8 ++++++++ > 1 file changed, 8 insertions(+) > Thanks, applied. Best regards, Krzysztof
