Commit 522968ae authored by Rodrigo Siqueira's avatar Rodrigo Siqueira Committed by Alex Deucher
Browse files

Documentation/gpu: Add basic overview of DC pipeline 



This commit describes how DCN works by providing high-level diagrams
with an explanation of each component. In particular, it details the
Global Sync signals.

Change since V2:
 - Add a comment about MMHUBBUB.

Reviewed-by: default avatarYann Dirson <ydirson@free.fr>
Reviewed-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 76659755

Documentation/gpu/amdgpu/display/config_example.svg

0 → 100644
+414 −0
Original line number Diff line number Diff line 
<?xml version="1.0" encoding="UTF-8" standalone="no"?>

<!-- Created with Inkscape (http://www.inkscape.org/) -->



<svg

   xmlns:dc="http://purl.org/dc/elements/1.1/"

   xmlns:cc="http://creativecommons.org/ns#"

   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"

   xmlns:svg="http://www.w3.org/2000/svg"

   xmlns="http://www.w3.org/2000/svg"

   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"

   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"

   width="144.63406mm"

   height="66.596054mm"

   viewBox="0 0 144.15195 66.596054"

   version="1.1"

   id="svg8"

   inkscape:version="0.92.5 (2060ec1f9f, 2020-04-08)"

   sodipodi:docname="config_example.svg">

  <defs

     id="defs2">

    <marker

       inkscape:stockid="Arrow1Mend"

       orient="auto"

       refY="0"

       refX="0"

       id="Arrow1Mend"

       style="overflow:visible"

       inkscape:isstock="true">

      <path

         id="path4547"

         d="M 0,0 5,-5 -12.5,0 5,5 Z"

         style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:1.00000003pt;stroke-opacity:1"

         transform="matrix(-0.4,0,0,-0.4,-4,0)"

         inkscape:connector-curvature="0" />

    </marker>

    <marker

       inkscape:stockid="Arrow1Mend"

       orient="auto"

       refY="0"

       refX="0"

       id="Arrow1Mend-3"

       style="overflow:visible"

       inkscape:isstock="true">

      <path

         inkscape:connector-curvature="0"

         id="path4547-6"

         d="M 0,0 5,-5 -12.5,0 5,5 Z"

         style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:1.00000003pt;stroke-opacity:1"

         transform="matrix(-0.4,0,0,-0.4,-4,0)" />

    </marker>

    <marker

       inkscape:stockid="Arrow1Mend"

       orient="auto"

       refY="0"

       refX="0"

       id="Arrow1Mend-3-5"

       style="overflow:visible"

       inkscape:isstock="true">

      <path

         inkscape:connector-curvature="0"

         id="path4547-6-3"

         d="M 0,0 5,-5 -12.5,0 5,5 Z"

         style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:1.00000003pt;stroke-opacity:1"

         transform="matrix(-0.4,0,0,-0.4,-4,0)" />

    </marker>

    <marker

       inkscape:stockid="Arrow1Mend"

       orient="auto"

       refY="0"

       refX="0"

       id="Arrow1Mend-3-5-0"

       style="overflow:visible"

       inkscape:isstock="true">

      <path

         inkscape:connector-curvature="0"

         id="path4547-6-3-6"

         d="M 0,0 5,-5 -12.5,0 5,5 Z"

         style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:1.00000003pt;stroke-opacity:1"

         transform="matrix(-0.4,0,0,-0.4,-4,0)" />

    </marker>

    <marker

       inkscape:stockid="Arrow1Mend"

       orient="auto"

       refY="0"

       refX="0"

       id="Arrow1Mend-3-5-7"

       style="overflow:visible"

       inkscape:isstock="true">

      <path

         inkscape:connector-curvature="0"

         id="path4547-6-3-3"

         d="M 0,0 5,-5 -12.5,0 5,5 Z"

         style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:1.00000003pt;stroke-opacity:1"

         transform="matrix(-0.4,0,0,-0.4,-4,0)" />

    </marker>

  </defs>

  <sodipodi:namedview

     id="base"

     pagecolor="#ffffff"

     bordercolor="#666666"

     borderopacity="1.0"

     inkscape:pageopacity="0.0"

     inkscape:pageshadow="2"

     inkscape:zoom="0.98994949"

     inkscape:cx="518.91791"

     inkscape:cy="172.50112"

     inkscape:document-units="mm"

     inkscape:current-layer="layer1"

     showgrid="true"

     viewbox-width="209.3"

     inkscape:window-width="3840"

     inkscape:window-height="1136"

     inkscape:window-x="0"

     inkscape:window-y="27"

     inkscape:window-maximized="1"

     fit-margin-top="0"

     fit-margin-left="0"

     fit-margin-right="0"

     fit-margin-bottom="0">

    <inkscape:grid

       type="xygrid"

       id="grid817"

       originx="4.390216"

       originy="-208.88856" />

  </sodipodi:namedview>

  <metadata

     id="metadata5">

    <rdf:RDF>

      <cc:Work

         rdf:about="">

        <dc:format>image/svg+xml</dc:format>

        <dc:type

           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />

        <dc:title></dc:title>

      </cc:Work>

    </rdf:RDF>

  </metadata>

  <g

     inkscape:label="Layer 1"

     inkscape:groupmode="layer"

     id="layer1"

     transform="translate(4.4048992,-21.515392)">

    <path

       style="fill:none;stroke:#000000;stroke-width:0.26458335px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"

       d="m 20.816662,35.062492 h 23.8125 v -5.291667 h 5.291667 v 5.291667 h 10.583334 v -5.291667 h 5.291667 v 5.291667 h 2.645833 v -5.291667 h 5.291667 v 5.291667 h 66.14583"

       id="path4522"

       inkscape:connector-curvature="0" />

    <path

       style="fill:none;stroke:#000000;stroke-width:0.26458335px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"

       d="m 20.816662,48.291659 h 7.9375 v -5.291667 h 5.291667 v 5.291667 h 58.208335 v -5.291667 h 5.291666 v 5.291667 h 42.33333"

       id="path4524"

       inkscape:connector-curvature="0" />

    <path

       style="fill:none;stroke:#000000;stroke-width:0.26458335px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"

       d="m 20.816662,61.520826 h 26.458334 v -5.291667 h 44.979168 v 5.291667 h 47.624996"

       id="path4526"

       inkscape:connector-curvature="0" />

    <path

       style="fill:none;stroke:#000000;stroke-width:0.26458335px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"

       d="M 20.816662,72.104159 H 139.87916"

       id="path4528"

       inkscape:connector-curvature="0" />

    <path

       style="fill:none;stroke:#000000;stroke-width:0.26458335px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"

       d="M 20.816662,77.395826 H 139.87916"

       id="path4530"

       inkscape:connector-curvature="0" />

    <path

       style="fill:none;stroke:#000000;stroke-width:0.26458335px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"

       d="M 20.816662,82.687493 H 139.87916"

       id="path4532"

       inkscape:connector-curvature="0" />

    <path

       style="fill:none;stroke:#000000;stroke-width:0.26458335px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"

       d="M 20.816662,87.97916 H 139.87916"

       id="path4534"

       inkscape:connector-curvature="0" />

    <path

       style="fill:none;stroke:#ff0000;stroke-width:0.5291667;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:0.52916668, 0.52916668;stroke-dashoffset:0;stroke-opacity:1;marker-end:url(#Arrow1Mend)"

       d="m 47.274996,29.770826 c 3.836215,14.933158 3.472151,27.586643 0.264583,41.010418"

       id="path4536"

       inkscape:connector-curvature="0"

       sodipodi:nodetypes="cc" />

    <path

       style="fill:none;stroke:#ff0000;stroke-width:0.5291667;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:0.52916669, 0.52916669;stroke-dashoffset:0;stroke-opacity:1;marker-end:url(#Arrow1Mend-3)"

       d="m 63.149996,29.770826 c 3.836214,14.933158 5.059652,27.586642 1.852084,41.010418"

       id="path4536-7"

       inkscape:connector-curvature="0"

       sodipodi:nodetypes="cc" />

    <path

       style="fill:none;stroke:#ff0000;stroke-width:0.5291667;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:0.5291667, 0.5291667;stroke-dashoffset:0;stroke-opacity:1;marker-end:url(#Arrow1Mend-3-5)"

       d="m 71.087496,29.770825 c 3.836214,14.933158 5.059652,27.586643 1.852084,41.010419"

       id="path4536-7-5"

       inkscape:connector-curvature="0"

       sodipodi:nodetypes="cc" />

    <text

       xml:space="preserve"

       style="font-style:normal;font-weight:normal;font-size:10.58333397px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458335"

       x="59.359009"

       y="24.195677"

       id="text6572"><tspan

         sodipodi:role="line"

         x="59.359009"

         y="24.195677"

         style="font-size:3.52777791px;line-height:5.39999962;text-align:center;text-anchor:middle;stroke-width:0.26458335"

         id="tspan6574">Configurations</tspan></text>

    <text

       xml:space="preserve"

       style="font-style:normal;font-weight:normal;font-size:10.58333397px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458335"

       x="46.825508"

       y="28.542402"

       id="text6572-6"><tspan

         sodipodi:role="line"

         x="46.825508"

         y="28.542402"

         style="font-size:3.52777815px;line-height:5.39999962;text-align:center;text-anchor:middle;fill:#008000;stroke-width:0.26458335"

         id="tspan6574-2">A</tspan></text>

    <text

       xml:space="preserve"

       style="font-style:normal;font-weight:normal;font-size:10.58333397px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458335"

       x="62.8895"

       y="28.825886"

       id="text6572-6-2"><tspan

         sodipodi:role="line"

         x="62.8895"

         y="28.825886"

         style="font-size:3.52777839px;line-height:5.39999962;text-align:center;text-anchor:middle;fill:#0000ff;stroke-width:0.26458335"

         id="tspan6574-2-7">B</tspan></text>

    <text

       xml:space="preserve"

       style="font-style:normal;font-weight:normal;font-size:10.58333397px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458335"

       x="70.827003"

       y="29.109362"

       id="text6572-6-2-3"><tspan

         sodipodi:role="line"

         x="70.827003"

         y="29.109362"

         style="font-size:3.52777863px;line-height:5.39999962;text-align:center;text-anchor:middle;fill:#c87137;stroke-width:0.26458335"

         id="tspan6574-2-7-6">C</tspan></text>

    <path

       style="fill:none;stroke:#ff0000;stroke-width:0.5291667;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:0.52916671, 0.52916671;stroke-dashoffset:0;stroke-opacity:1;marker-end:url(#Arrow1Mend-3-5-0)"

       d="m 92.254164,42.999993 c 9.142136,12.745655 4.411987,28.608461 0.529167,38.364584"

       id="path4536-7-5-2"

       inkscape:connector-curvature="0"

       sodipodi:nodetypes="cc" />

    <path

       style="fill:none;stroke:#000000;stroke-width:0.5291667;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"

       d="m 47.274996,72.104159 v 5.291667"

       id="path8053"

       inkscape:connector-curvature="0" />

    <path

       style="fill:none;stroke:#000000;stroke-width:0.5291667;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"

       d="m 64.472913,72.10416 v 5.291667"

       id="path8053-6"

       inkscape:connector-curvature="0" />

    <path

       style="fill:none;stroke:#000000;stroke-width:0.5291667;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"

       d="m 72.410413,72.10416 v 5.291667"

       id="path8053-6-1"

       inkscape:connector-curvature="0" />

    <path

       style="fill:none;stroke:#000000;stroke-width:0.5291667;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"

       d="m 92.254164,82.687494 v 5.291667"

       id="path8053-6-1-8"

       inkscape:connector-curvature="0" />

    <text

       xml:space="preserve"

       style="font-style:normal;font-weight:normal;font-size:10.58333397px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458335"

       x="55.802444"

       y="76.167412"

       id="text6572-6-7"><tspan

         sodipodi:role="line"

         x="55.802444"

         y="76.167412"

         style="font-size:3.52777839px;line-height:5.39999962;text-align:center;text-anchor:middle;fill:#008000;stroke-width:0.26458335"

         id="tspan6574-2-9">A</tspan></text>

    <text

       xml:space="preserve"

       style="font-style:normal;font-weight:normal;font-size:10.58333397px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458335"

       x="68.559143"

       y="75.883926"

       id="text6572-6-2-2"><tspan

         sodipodi:role="line"

         x="68.559143"

         y="75.883926"

         style="font-size:3.52777863px;line-height:5.39999962;text-align:center;text-anchor:middle;fill:#0000ff;stroke-width:0.26458335"

         id="tspan6574-2-7-0">B</tspan></text>

    <text

       xml:space="preserve"

       style="font-style:normal;font-weight:normal;font-size:10.58333397px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458335"

       x="84.812119"

       y="75.883911"

       id="text6572-6-2-3-2"><tspan

         sodipodi:role="line"

         x="84.812119"

         y="75.883911"

         style="font-size:3.52777863px;line-height:5.39999962;text-align:center;text-anchor:middle;fill:#c87137;stroke-width:0.26458335"

         id="tspan6574-2-7-6-3">C</tspan></text>

    <text

       xml:space="preserve"

       style="font-style:normal;font-weight:normal;font-size:10.58333397px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458335"

       x="98.513756"

       y="86.845222"

       id="text6572-6-2-3-2-7"><tspan

         sodipodi:role="line"

         x="98.513756"

         y="86.845222"

         style="font-size:3.52777863px;line-height:5.39999962;text-align:center;text-anchor:middle;fill:#c87137;stroke-width:0.26458335"

         id="tspan6574-2-7-6-3-5">C</tspan></text>

    <text

       xml:space="preserve"

       style="font-style:normal;font-weight:normal;font-size:10.58333397px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458335"

       x="35.452015"

       y="75.694931"

       id="text6572-9"><tspan

         sodipodi:role="line"

         x="35.452015"

         y="75.694931"

         style="font-size:3.52777815px;line-height:5.39999962;text-align:center;text-anchor:middle;stroke-width:0.26458335"

         id="tspan6574-22">Old config</tspan></text>

    <text

       xml:space="preserve"

       style="font-style:normal;font-weight:normal;font-size:10.58333397px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458335"

       x="55.484753"

       y="86.656235"

       id="text6572-9-8"><tspan

         sodipodi:role="line"

         x="55.484753"

         y="86.656235"

         style="font-size:3.52777839px;line-height:5.39999962;text-align:center;text-anchor:middle;stroke-width:0.26458335"

         id="tspan6574-22-9">Old config</tspan></text>

    <path

       style="fill:none;stroke:#ff0000;stroke-width:0.5291667;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:0.52916671, 0.52916671;stroke-dashoffset:0;stroke-opacity:1;marker-end:url(#Arrow1Mend-3-5-7)"

       d="m 92.254164,42.999993 c 4.233333,4.7625 2.645833,13.229167 0.79375,17.197917"

       inkscape:connector-curvature="0"

       sodipodi:nodetypes="cc" />

    <text

       xml:space="preserve"

       style="font-style:normal;font-weight:normal;font-size:10.58333397px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458335"

       x="3.7020128"

       y="33.550579"

       id="text6572-1"><tspan

         sodipodi:role="line"

         x="3.7020128"

         y="42.914349"

         style="font-size:3.52777815px;line-height:5.39999962;text-align:center;text-anchor:middle;stroke-width:0.26458335"

         id="tspan15310" /></text>

    <text

       xml:space="preserve"

       style="font-style:normal;font-weight:normal;font-size:3.17500019px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458335"

       x="13.366468"

       y="46.590767"

       id="text15316"><tspan

         sodipodi:role="line"

         x="13.366468"

         y="46.590767"

         style="text-align:center;text-anchor:middle;stroke-width:0.26458335"

         id="tspan15318">VUpdate</tspan></text>

    <text

       xml:space="preserve"

       style="font-style:normal;font-weight:normal;font-size:3.17500043px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458335"

       x="14.45245"

       y="29.676321"

       id="text15316-3"><tspan

         sodipodi:role="line"

         id="tspan15314-1"

         x="14.45245"

         y="29.676321"

         style="text-align:center;text-anchor:middle;stroke-width:0.26458335">Update</tspan><tspan

         sodipodi:role="line"

         x="14.45245"

         y="33.645073"

         style="text-align:center;text-anchor:middle;stroke-width:0.26458335"

         id="tspan15318-9">Lock</tspan></text>

    <text

       xml:space="preserve"

       style="font-style:normal;font-weight:normal;font-size:3.17500043px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458335"

       x="7.5676007"

       y="56.985115"

       id="text15316-4"><tspan

         sodipodi:role="line"

         x="7.5676007"

         y="56.985115"

         style="text-align:center;text-anchor:middle;stroke-width:0.26458335"

         id="tspan15318-7">Register update</tspan><tspan

         sodipodi:role="line"

         x="7.5676007"

         y="60.953865"

         style="text-align:center;text-anchor:middle;stroke-width:0.26458335"

         id="tspan15361">Pending Status</tspan></text>

    <text

       xml:space="preserve"

       style="font-style:normal;font-weight:normal;font-size:3.17500043px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458335"

       x="16.074829"

       y="76.167404"

       id="text15316-8"><tspan

         sodipodi:role="line"

         x="16.074829"

         y="76.167404"

         style="text-align:center;text-anchor:middle;stroke-width:0.26458335"

         id="tspan15318-4">Buf 0</tspan></text>

    <text

       xml:space="preserve"

       style="font-style:normal;font-weight:normal;font-size:3.17500067px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458335"

       x="16.156994"

       y="86.089279"

       id="text15316-8-5"><tspan

         sodipodi:role="line"

         x="16.156994"

         y="86.089279"

         style="text-align:center;text-anchor:middle;stroke-width:0.26458335"

         id="tspan15318-4-0">Buf 1</tspan></text>

  </g>

</svg>

Documentation/gpu/amdgpu/display/dc_pipeline_overview.svg

0 → 100644
+1125 −0

File added.

Preview size limit exceeded, changes collapsed.

Documentation/gpu/amdgpu/display/dcn-overview.rst

0 → 100644
+171 −0

File added.

Preview size limit exceeded, changes collapsed.

Documentation/gpu/amdgpu/display/global_sync_vblank.svg

0 → 100644
+485 −0

File added.

Preview size limit exceeded, changes collapsed.

Documentation/gpu/amdgpu/display/index.rst

+11 −12
Original line number Diff line number Diff line
@@ -2,28 +2,27 @@ 
drm/amd/display - Display Core (DC)

===================================



*placeholder - general description of supported platforms, what dc is, etc.*



Because it is partially shared with other operating systems, the Display Core

Driver is divided in two pieces.

AMD display engine is partially shared with other operating systems; for this

reason, our Display Core Driver is divided into two pieces:



1. **Display Core (DC)** contains the OS-agnostic components. Things like

   hardware programming and resource management are handled here.

2. **Display Manager (DM)** contains the OS-dependent components. Hooks to the

   amdgpu base driver and DRM are implemented here.



It doesn't help that the entire package is frequently referred to as DC. But

with the context in mind, it should be clear.

The display pipe is responsible for "scanning out" a rendered frame from the

GPU memory (also called VRAM, FrameBuffer, etc.) to a display. In other words,

it would:



When CONFIG_DRM_AMD_DC is enabled, DC will be initialized by default for

supported ASICs. To force disable, set `amdgpu.dc=0` on kernel command line.

Likewise, to force enable on unsupported ASICs, set `amdgpu.dc=1`.

1. Read frame information from memory;

2. Perform required transformation;

3. Send pixel data to sink devices.



To determine if DC is loaded, search dmesg for the following entry:

If you want to learn more about our driver details, take a look at the below

table of content:



.. toctree::



   display-manager.rst

   dc-debug.rst



``Display Core initialized with <version number here>``
 
   dcn-overview.rst