#top.sls:

base:
  '*':
    - saltminion01_pillar
  'minion01':
    - pillarfile01
  'minion02':
    - pillarfile02


=============     OR      =====================

base:
  '*':
    - pillarFileForAllMinions


# pillarFileForAllMinions.sls:

{% if grains['id'] == 'minion01' %}
k1: value2
{% endif %}
{% if grains['id'] == 'minion02' %}
k1: value2
{% endif %}