[PATCH v2 6/6] docs/about/deprecated: Document RISC-V "pmu-num" deprecation

[Rob Bradford]

This has been replaced by a "pmu-mask" property that provides much more
flexibility.

Signed-off-by: Rob Bradford <rbradford at rivosinc.com>
---
 docs/about/deprecated.rst | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst
index 8b136320e2..37f3414ef8 100644
--- a/docs/about/deprecated.rst
+++ b/docs/about/deprecated.rst
@@ -361,6 +361,16 @@ Specifying the iSCSI password in plain text on the command line using the
 used instead, to refer to a ``--object secret...`` instance that provides
 a password via a file, or encrypted.
 
+CPU device properties
+'''''''''''''''''''''
+
+``pmu-num=x`` on RISC-V CPUs (since 8.2)
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+In order to support more flexible counter configurations this has been
+replaced by a ``pmu-mask`` property
+
+
 Backwards compatibility
 -----------------------
 
-- 
2.41.0