data/etc/cec_config.xml

<?xml version='1.0' encoding='utf-8' standalone='yes' ?>
<cec-settings>
  <setting name="hdmi_cec_enabled"
           value-type="int"
           user-configurable="true">
    <allowed-values>
      <value int-value="0" />
      <value int-value="1" />
    </allowed-values>
    <default-value int-value="1" />
  </setting>
  <setting name="hdmi_cec_version"
           value-type="int"
           user-configurable="true">
    <allowed-values>
      <value int-value="0x05" />
      <value int-value="0x06" />
    </allowed-values>
    <default-value int-value="0x05" />
  </setting>
  <setting name="send_standby_on_sleep"
           value-type="string"
           user-configurable="true">
    <allowed-values>
      <value string-value="to_tv" />
      <value string-value="broadcast" />
      <value string-value="none" />
    </allowed-values>
    <default-value string-value="to_tv" />
  </setting>
  <setting name="power_state_change_on_active_source_lost"
           value-type="string"
           user-configurable="true">
    <allowed-values>
      <value string-value="none" />
      <value string-value="standby_now" />
    </allowed-values>
    <default-value string-value="none" />
  </setting>
  <setting name="system_audio_mode_muting"
           value-type="int"
           user-configurable="true">
    <allowed-values>
      <value int-value="0" />
      <value int-value="1" />
    </allowed-values>
    <default-value int-value="1" />
  </setting>
</cec-settings>