1. 10e4779 SPDX: Convert all of our single license tags to Linux Kernel style by Tom Rini · Sun May 06 17:58:06 2018 -0400
  2. 7710e29 ARM: at91: move SoC headers to mach-at91/include/mach by Masahiro Yamada · Fri Feb 20 17:04:13 2015 +0900[Renamed from arch/arm/include/asm/arch-at91/at91_rtt.h]
  3. d79de1d Add GPL-2.0+ SPDX-License-Identifier to source files by Wolfgang Denk · Mon Jul 08 09:37:19 2013 +0200
  4. c9c7606 AT91: add RTT and GPBR based RTC by Reinhard Meyer · Tue Jul 27 16:22:09 2010 +0200