1. 9ef3e70 xtensa: use asm-generic/atomic.h by Chris Packham · Sat Sep 08 21:39:07 2018 +1200
  2. 10e4779 SPDX: Convert all of our single license tags to Linux Kernel style by Tom Rini · Sun May 06 17:58:06 2018 -0400
  3. 1387dab xtensa: add support for the xtensa processor architecture [2/2] by Chris Zankel · Wed Aug 10 18:36:44 2016 +0300