[4.4-rc][PATCH v2] ARM: dts: am4372: fix clock source for arm twd and global timers
tony at atomide.com
Wed Dec 9 16:47:02 PST 2015
* Felipe Balbi <balbi at ti.com> [151208 10:05]:
> Grygorii Strashko <grygorii.strashko at ti.com> writes:
> > ARM TWD and Global timer are clocked by PERIPHCLK which is MPU_CLK/2.
> > But now they are clocked by dpll_mpu_m2_ck == MPU_CLK and, as result.
> > Timekeeping core misbehaves. For example, execution of command
> > "sleep 5" will take 10 sec instead of 5.
> > Hence, fix it by adding mpu_periphclk ("fixed-factor-clock") and use
> > it for clocking ARM TWD and Global timer (same way as on OMAP4).
> > Cc: Tony Lindgren <tony at atomide.com>
> > Cc: Felipe Balbi <balbi at ti.com>
> > Cc: Tero Kristo <t-kristo at ti.com>
> > Fixes:commit 8cbd4c2f6a99 ("arm: boot: dts: am4372: add ARM timers and SCU nodes")
> > Signed-off-by: Grygorii Strashko <grygorii.strashko at ti.com>
> this seems to be the best fix for this problem, yeah.
> Reviewed-by: Felipe Balbi <balbi at ti.com>
OK applying into omap-for-v4.4/fixes thanks.
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