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  • linux-arm
  • linux-sp
  • Repository
  • linux-sp
  • arch
  • arm
  • boot
  • dts
  • am4372.dtsi
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  • Grygorii Strashko's avatar
    ARM: dts: am4372: fix clock source for arm twd and global timers · 14054fb1
    Grygorii Strashko authored Nov 30, 2015
    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@atomide.com>
    Cc: Felipe Balbi <balbi@ti.com>
    Cc: Tero Kristo <t-kristo@ti.com>
    Fixes:commit 8cbd4c2f
    
     ("arm: boot: dts: am4372: add ARM timers and SCU nodes")
    Signed-off-by: default avatarGrygorii Strashko <grygorii.strashko@ti.com>
    Reviewed-by: default avatarFelipe Balbi <balbi@ti.com>
    Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
    14054fb1