Hi Naveen, On Tuesday 26 of November 2013 09:52:46 Naveen Krishna Chatradhi wrote: > For Exynos4 and Exynos5 SoCs from Samsung the i2c clock is based > on a fixed 66 MHz peripheral clock, and therefore is completely > independent of the cpu frequency. > Thus, registering for a CPU freq notifier is very wasteful. > > This patch modifes the code such that, i2c bus registers to > cpu_freq_transition only if CONFIG_CPU_FREQ_S3C24XX is enabled. > > This change should save a bunch of cpufreq transitions calls > which does not apply to exynos SoCs. > > Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@xxxxxxxxxxx> > Acked-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx> > Reviewed-by: Doug Anderson <dianders@xxxxxxxxxxxx> > --- > Changes since v3: > As per discussion at https://patchwork.kernel.org/patch/3235091/ > Post f023f8dd59 commit we should be using > ARM_S3C24XX_CPUFREQ instead of CPU_FREQ_S3C24XX > > upstrea linux kernel and linuxsamsung already has the commit > f023f8dd59. Hence, rebasing the patch. > > drivers/i2c/busses/i2c-s3c2410.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) Reviewed-by: Tomasz Figa <t.figa@xxxxxxxxxxx> Wolfram, are you okay with this patch? Best regards, Tomasz -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
