Hello Santosh, On Wed, 23 Feb 2011, Santosh Shilimkar wrote: > > -----Original Message----- > > From: Paul Walmsley [mailto:paul@xxxxxxxxx] > > Sent: Wednesday, February 23, 2011 12:42 PM > > > > diff --git a/arch/arm/mach-omap2/timer-gp.c b/arch/arm/mach- > > omap2/timer-gp.c > > index 0fc550e..a4e51a2 100644 > > --- a/arch/arm/mach-omap2/timer-gp.c > > +++ b/arch/arm/mach-omap2/timer-gp.c > > @@ -40,10 +40,11 @@ > > #include <plat/dmtimer.h> > > #include <asm/localtimer.h> > > #include <asm/sched_clock.h> > > +#include <plat/common.h> > > > > #include "timer-gp.h" > > +#include <plat/omap_hwmod.h> > > > > -#include <plat/common.h> > > > > /* MAX_GPTIMER_ID: number of GPTIMERs on the chip */ > > #define MAX_GPTIMER_ID 12 > > @@ -133,9 +134,13 @@ static void __init > > omap2_gp_clockevent_init(void) > > { > > u32 tick_rate; > > int src; > > + const char *clockevent_hwmod_name; > > > > inited = 1; > > > > + clockevent_hwmod_name = (gptimer_id == 12) ? "timer12" : > > "timer1"; > > + omap_hwmod_late_init_one(clockevent_hwmod_name); > > + > > Do we need above hard-coding ? This takes away flexibility of > choosing system timer from board files, right ? > > Am I missing something here? You are absolutely right. That was an error on my part. I propose the following change instead - please let me know what you think. - Paul From: Paul Walmsley <paul@xxxxxxxxx> Date: Wed, 23 Feb 2011 00:14:08 -0700 Subject: [PATCH] OMAP2+: clockevent: late-init GPTIMER clockevent hwmod right before timer init Late-initialize the GPTIMER hwmod used for the clockevent source immediately before it is used. This avoids the need to late-initialize all of the hwmods until the boot process is further along. (In general, we want to defer as much as possible until late in the boot process.) This second version fixes a bug pointed out by Santosh Shilimkar <santosh.shilimkar@xxxxxx>, that would cause the kernel to use an incorrect timer hwmod name if the selected GPTIMER was not 1 or 12 - thanks Santosh. Also, Tarun Kanti DebBarma <tarun.kanti@xxxxxx> pointed out that the original patch did not apply cleanly; this has now been fixed. Signed-off-by: Paul Walmsley <paul@xxxxxxxxx> Cc: BenoÃt Cousson <b-cousson@xxxxxx> Cc: Tony Lindgren <tony@xxxxxxxxxxx> Cc: Kevin Hilman <khilman@xxxxxx> Cc: Santosh Shilimkar <santosh.shilimkar@xxxxxx> Cc: Tarun Kanti DebBarma <tarun.kanti@xxxxxx> --- arch/arm/mach-omap2/timer-gp.c | 7 ++++++- 1 files changed, 6 insertions(+), 1 deletions(-) diff --git a/arch/arm/mach-omap2/timer-gp.c b/arch/arm/mach-omap2/timer-gp.c index 7b7c268..d23767f 100644 --- a/arch/arm/mach-omap2/timer-gp.c +++ b/arch/arm/mach-omap2/timer-gp.c @@ -39,10 +39,11 @@ #include <asm/mach/time.h> #include <plat/dmtimer.h> #include <asm/localtimer.h> +#include <plat/common.h> +#include <plat/omap_hwmod.h> #include "timer-gp.h" -#include <plat/common.h> /* MAX_GPTIMER_ID: number of GPTIMERs on the chip */ #define MAX_GPTIMER_ID 12 @@ -132,9 +133,13 @@ static void __init omap2_gp_clockevent_init(void) { u32 tick_rate; int src; + char *clockevent_hwmod_name; inited = 1; + sprintf(clockevent_hwmod_name, "timer%d", gptimer_id); + omap_hwmod_late_init_one(clockevent_hwmod_name); + gptimer = omap_dm_timer_request_specific(gptimer_id); BUG_ON(gptimer == NULL); gptimer_wakeup = gptimer; -- 1.7.2.3
