[PATCH v1] pwm: mediatek: improve precision in rate calculation

[thierry.reding@gmail.com (Thierry Reding)]

On Fri, Mar 02, 2018 at 04:49:14PM +0800, sean.wang at mediatek.com wrote:
> From: Sean Wang <sean.wang@mediatek.com>
> 
> Add a way that turning resolution from in nanosecond into in picosecond
> to improve noticeably almost 4.5% precision.
> 
> It's necessary to hold the new resolution with type u64 and thus related
> operations on u64 are applied instead in those rate calculations.
> 
> And the patch has a dependency on [1].
> 
> [1] http://lists.infradead.org/pipermail/linux-mediatek/2018-March/012225.html
> 
> Cc: stable at vger.kernel.org
> Fixes: caf065f8fd58 ("pwm: Add MediaTek PWM support")
> Signed-off-by: Sean Wang <sean.wang@mediatek.com>
> ---
>  drivers/pwm/pwm-mediatek.c | 17 ++++++++++++-----
>  1 file changed, 12 insertions(+), 5 deletions(-)

Applied, thanks.

Thierry
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