[PATCH 1/4] doc: add high level introduction to documentation main page

[Jani Nikula]

It's a bit harsh to welcome the reader with just contents.

Signed-off-by: Jani Nikula <jani.nikula at intel.com>
---
 index.rst | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/index.rst b/index.rst
index f5f8e95571eb..6110cc796d2a 100644
--- a/index.rst
+++ b/index.rst
@@ -1,6 +1,22 @@
 DRM Maintainer Tools
 ====================
 
+This documentation covers the tools and workflows for maintaining and
+contributing to the Linux kernel DRM subsystem drm-misc and drm-intel
+repositories. The intended audience is primarily the maintainers and committers
+of said repositories, but the workflow documentation may be useful for anyone
+interested in the kernel graphics subsystem development.
+
+Both drm-misc and drm-intel are maintained using the same tools and very similar
+workflows. Both feed to the same testing and integration tree, the drm-tip. The
+documentation here is mostly shared, highlighting the differences in workflows
+where applicable.
+
+Please use the `dim-tools at lists.freedesktop.org`_ mailing list for
+contributions, bug reports, and discussion about the tooling and documentation.
+
+.. _dim-tools at lists.freedesktop.org: https://lists.freedesktop.org/mailman/listinfo/dim-tools
+
 Contents:
 
 .. toctree::
-- 
2.11.0