On Thu, Nov 17, 2016 at 01:35:45PM +0100, Arnd Bergmann wrote: > On Monday, November 14, 2016 8:27:05 PM CET Krzysztof Kozlowski wrote: > > @@ -1497,7 +1497,7 @@ source kernel/Kconfig.preempt > > config HZ_FIXED > > int > > default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \ > > - ARCH_S5PV210 || ARCH_EXYNOS4 > > + ARCH_S5PV210 > > default 128 if SOC_AT91RM9200 > > default 0 > > After further research, I've concluded that we should also drop the > settings for ARCH_S5PV210 and ARCH_S3C24XX here. > > ARCH_S5PV210 behaves exactly like EXYNOS here, it has 32-bit timers > so there won't be any overflow with 100Hz. > > For ARCH_S3C24XX, it the requirement was that HZ_100 could not > be used with the old arch/arm/plat-samsung/time.c code that would > overflow its 16-bit counter. > However, the new drivers/clocksource/samsung_pwm_timer.c configures > the clock divider to '50' instead of '6', so there is no longer > a 16-bit overflow before the 100Hz tick, it now overflows every > 3.7ms for the typical 12MHz clock. I can send an updated version however testing would be nice... I know Sylwester has a S3C6410 platform running, maybe S3C24xx as well. Best regards, Krzysztof -- 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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