[PATCH 1/2] ARM: simplify timer initialisation and remove arm_timer.h inclusion

Russell King - ARM Linux linux at arm.linux.org.uk
Mon May 18 03:40:43 PDT 2015


On Thu, Apr 30, 2015 at 09:09:47AM -0500, Rob Herring wrote:
> On Thu, Apr 30, 2015 at 5:44 AM, Sudeep Holla <sudeep.holla at arm.com> wrote:
> > The header asm/hardware/arm_timer.h is included in various machine
> > specific files to access TIMER_CTRL and initialise to a known state.
> > However that's not required as the clock{source,event} driver timer-sp
> > initialises all the timer being used.
> 
> I believe the idea is not to initialize the timers being used, but the
> ones not being used and perhaps left running by the bootloader. Cases
> where the interrupt is shared could cause a problem.

Exactly.  IMHO this code needs to stay.

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