Re: [PATCH v2] OMAP:GPTIMER:1ms tick generation correction

[Kevin Hilman <khilman@deeprootsystems.com>]

Tarun Kanti DebBarma <tarun.kanti@ti.com> writes:

> Generation of 1ms granular GPTIMER events using 32KHz or system
> clocks as inputs does not have whole number count value to load
> into the register. This inaccurate count value with respect to 1ms
> period leads to time drift subsequently. OMAP3 and later silicons
> have dedicated registers for GPTIMER1, GPTIMER2 and GPTIMER10,
> which can be programmed with computed values to keep this error
> controlled within specified limit.
>
> Version 2:
> (i) optimized omap_dm_timer_ms_correction() function and corrected
> error in computing the positive and negative increments.
> (ii) typo corrections in comment section and warning removal related
> to 80-character limit
>
> Tested on Zoom3 using Linus tree.
>
> Signed-off-by: R Sricharan <r.sricharan@ti.com>
> Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>

Please coordinate this change with the GPTIMER hwmod changes.  The timers
that have/need this feature should be flagged at the hwmod level (probably by
a dev_attr flag.)

Kevin