1. e7d15f6 arch/powperpc: Fix start_align due to use of __ffs64() instead ffs64() by Ashish kumar · Fri Jan 22 15:50:10 2016 +0530
  2. e237880 Add more SPDX-License-Identifier tags by Tom Rini · Thu Jan 14 22:05:13 2016 -0500
  3. 1a03a7e powerpc: Remove __ilog2_u64 and ffs4 from bitops by Fabio Estevam · Thu Nov 05 12:43:40 2015 -0200
  4. e12ce98 powerpc/mpc83xx: Migrate from spd_sdram to unified DDR driver by York Sun · Fri Aug 26 11:32:44 2011 -0700