diff --git a/boards/arc/nsim/doc/index.rst b/boards/arc/nsim/doc/index.rst
index ee87b4f2aab..64f6f4666f4 100644
--- a/boards/arc/nsim/doc/index.rst
+++ b/boards/arc/nsim/doc/index.rst
@@ -33,6 +33,8 @@ available configurations are listed below:
 * ``nsim_vpx5`` - ARCv2 VPX5 core, close to vpx5_integer_full template
 * ``nsim_hs5x`` - 32-bit ARCv3 HS core with rich set of options
 * ``nsim_hs6x`` - 64-bit ARCv3 HS core with rich set of options
+* ``nsim_hs5x_smp_12cores`` - SMP 12 cores 32-bit ARCv3 HS platform
+* ``nsim_hs5x_smp_12cores`` - SMP 12 cores 64-bit ARCv3 HS platform
 
 .. _board_arc_nsim_prop_args_files: