servo/data/servo_hammer_overlay.xml

<?xml version="1.0"?>
<root>
  <include>
    <name>servoflex_v2_r0_p50.xml</name>
  </include>
  <!-- STM32 EC boot0 control -->
  <control>
    <name>dev_mode</name>
    <alias>ec_boot_mode</alias>
    <params clobber_ok="" od="PP"></params>
  </control>
  <control>
    <name>ec_chip</name>
    <doc>EC chip name (read-only)</doc>
    <params clobber_ok="" cmd="get" subtype="chip" interface="servo"
    drv="cros_chip" chip="stm32"/>
  </control>
</root>