s function configures Video Timing Controller with Adaptive-Sync mode to be work on and sets vertical front porch stretch limit. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">InstancePtr</td><td>is a pointer to the XVtc instance. </td></tr>
    <tr><td class="paramname">mode</td><td>is a Adaptive-Sync mechanism to be work on </td></tr>
    <tr><td class="paramname">StretchLimit</td><td>is a max limit of vertical front porch stretching</td></tr>
  </ta