Clarify pmpcfgX on illegal write combination (fixes #1694)

openhwgroup · Dec 14, 2023 · 81dc8d7 · 81dc8d7
1 parent 49d1262
commit 81dc8d7
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/docs/01_cva6_user/PMP.rst b/docs/01_cva6_user/PMP.rst
@@ -40,3 +40,5 @@ Writes to ``pmpaddr`` are WARL and depend on the address mode. For naturally
 aligned power-of 2 addressing mode (``NAPOT``) it is set to ``1``, for top
 boundary of an arbitrary range (``TOR``) or ``OFF`` it is set to ``0``.
 
+If, on write to `pmpcfgX`, ``R=0`` and ``W=1`` are set the CSR will not be
+updated.