[PATCH v2 3/2] docs: changes: better document Python needs

[Mauro Carvalho Chehab]

Python is listed as an optional dependency, but this is not
true, as kernel-doc is called during compilation when DRM is
enabled. Better document that.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
---
 Documentation/process/changes.rst | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/Documentation/process/changes.rst b/Documentation/process/changes.rst
index bccfa19b45df..6a7d7c1ee274 100644
--- a/Documentation/process/changes.rst
+++ b/Documentation/process/changes.rst
@@ -61,7 +61,7 @@ Sphinx\ [#f1]_         3.4.3            sphinx-build --version
 GNU tar                1.28             tar --version
 gtags (optional)       6.6.5            gtags --version
 mkimage (optional)     2017.01          mkimage --version
-Python (optional)      3.9.x            python3 --version
+Python                 3.9.x            python3 --version
 GNU AWK (optional)     5.1.0            gawk --version
 ====================== ===============  ========================================
 
@@ -154,6 +154,13 @@ Perl
 You will need perl 5 and the following modules: ``Getopt::Long``,
 ``Getopt::Std``, ``File::Basename``, and ``File::Find`` to build the kernel.
 
+Python
+------
+
+At least Python 2.7 or 3.4 is required if CONFIG_DRM is selected to avoid
+breaking compilation. Documentation build and kernel-doc won't produce
+valid results if version is below 3.7.
+
 BC
 --
 
-- 
2.50.0