Re: [PATCH v2 13/13] net: ethernet: ti: cpts: fix overflow check period

[Richard Cochran]

On Mon, Nov 28, 2016 at 05:03:37PM -0600, Grygorii Strashko wrote:
> The CPTS drivers uses 8sec period for overflow checking with
> assumption that CPTS retclk will not exceed 500MHz. But that's not
> true on some TI platforms (Kesytone 2). As result, it is possible that
> CPTS counter will overflow more than once between two readings.
> 
> Hence, fix it by selecting overflow check period dynamically as
> max_sec_before_overflow/2, where
>  max_sec_before_overflow = max_counter_val / rftclk_freq.
> 
> Cc: John Stultz <john.stultz@xxxxxxxxxx>
> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> Signed-off-by: Grygorii Strashko <grygorii.strashko@xxxxxx>

Acked-by: Richard Cochran <richardcochran@xxxxxxxxx>