22 Oct
2018
22 Oct
'18
8:35 p.m.
On Mon, Oct 22, 2018 at 11:29 AM Jagan Teki jagan@amarulasolutions.com wrote:
On Wed, Oct 17, 2018 at 10:28 AM Vasily Khoruzhick anarsoul@gmail.com wrote:
Choose best prescaler to improve PWM resolution. Without this change driver chooses first prescaler that gives us period value within range, but it could be not the best one.
This commit need to elaborate about the real issue, ie got fixed. Understand it has chosen best prescaler but why and how it.
If PWM resolution is low then close backlight levels can result in the same PWM settings, i.e. 0% and 10% can be the same (and thus backlight remains powered off). Basically the patch does what comment says - it improves PWM resolution.