1. 4c08742 power: regulator: pwm: support pwm polarity setting by Kever Yang · Mon Apr 24 10:27:49 2017 +0800
  2. b3f0756 dm: pwm: Add a PWM uclass by Simon Glass · Thu Jan 21 19:44:54 2016 -0700
  3. d79de1d Add GPL-2.0+ SPDX-License-Identifier to source files by Wolfgang Denk · Mon Jul 08 09:37:19 2013 +0200
  4. 85f5df2 ARM: S5P: pwm driver support by Donghwa Lee · Mon Mar 07 21:11:42 2011 +0000