[PATCH 0/8] OMAP2+: hwmod/clockevent: allow late-init of individual hwmods

[Paul Walmsley]

Salut Benoît,

On Wed, 23 Feb 2011, Cousson, Benoit wrote:

> On 2/23/2011 8:11 AM, Paul Walmsley wrote:
> > This series adds the ability to late-initialize individual
> > hwmods.  The goal here is for clockevent (and eventually
> > clocksource) hwmods to be late-initialized individually, and
> > right before they are needed, in the timer init code.  Then
> > omap_hwmod_late_init(), which late-inits the rest of the hwmods,
> > is intended to run as an initcall -- much later in the boot
> > process.
> > 
> > This series includes the OMAP2/3 hwmod data for the GPTIMERs that
> > Tarun posted earlier.  This data is necessary for this new code
> > to avoid warnings during boot.
> > 
> > Boot-tested on N800, OMAP34xx Beagleboard and OMAP4430ES2 Panda.
> 
> I'm testing it on 4430sdp, and I have the following warning:
> 
> [    0.000000] omap_hwmod: dpll_mpu_m2_ck: missing clockdomain for dpll_mpu_m2_ck.
> [    0.000000] ------------[ cut here ]------------
> [    0.000000] WARNING: at arch/arm/mach-omap2/timer-gp.c:157 omap2_gp_timer_init+0x80/0x190()
> [    0.000000] timer-gp: omap_dm_timer_set_source() failed
> [    0.000000] Modules linked in:
> [    0.000000] [<c0062a6c>] (unwind_backtrace+0x0/0xec) from [<c009422c>] (warn_slowpath_common+0x4c/0x64)
> [    0.000000] [<c009422c>] (warn_slowpath_common+0x4c/0x64) from [<c00942c4>] (warn_slowpath_fmt+0x2c/0x3c)
> [    0.000000] [<c00942c4>] (warn_slowpath_fmt+0x2c/0x3c) from [<c0010e30>] (omap2_gp_timer_init+0x80/0x190)
> [    0.000000] [<c0010e30>] (omap2_gp_timer_init+0x80/0x190) from [<c000c0dc>] (time_init+0x20/0x30)
> [    0.000000] [<c000c0dc>] (time_init+0x20/0x30) from [<c0008cbc>] (start_kernel+0x1a4/0x30c)
> [    0.000000] [<c0008cbc>] (start_kernel+0x1a4/0x30c) from [<80008038>] (0x80008038)
> [    0.000000] ---[ end trace 1b75b31a2719ed1c ]---
> [    0.000000] OMAP clockevent source: GPTIMER1 at 32768 Hz

This is due to commit 3b03b58dab847883e6b9a431558c7d8e43fa94c6 ("OMAP4: 
hwmod data: Prevent timer1 to be reset and idle during init").  Could you 
please try reverting this and see if the warning disappears?

Tony, I guess the omap-for-linus branch will probably need to get rebuilt 
to drop that patch, once this series is merged...

- Paul