Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Heinrich Schuchardt <xypron.glpk@gmx.de>
To:     Rob Herring <robh+dt@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>
Cc:     devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        Ard Biesheuvel <ardb@kernel.org>,
        Grant Likely <grant.likely@arm.com>,
        Heinrich Schuchardt <xypron.glpk@gmx.de>
Subject: [PATCH 1/1] of: properties of reserved-memory nodes
Date:   Thu, 10 Sep 2020 18:20:20 +0200
Message-Id: <20200910162020.3927-1-xypron.glpk@gmx.de>
MIME-Version: 1.0
Content-Transfer-Encoding: quoted-printable
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

The reusable and the no-map property are mutually exclusive.
Clarify this in the documentation.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
=2D--
 .../devicetree/bindings/reserved-memory/reserved-memory.txt    | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/reserved-memory/reserved-me=
mory.txt b/Documentation/devicetree/bindings/reserved-memory/reserved-memo=
ry.txt
index bac4afa3b197..eb987203548f 100644
=2D-- a/Documentation/devicetree/bindings/reserved-memory/reserved-memory.=
txt
+++ b/Documentation/devicetree/bindings/reserved-memory/reserved-memory.tx=
t
@@ -64,6 +64,9 @@ reusable (optional) - empty property
       system can use that region to store volatile or cached data that
       can be otherwise regenerated or migrated elsewhere.

+A node must not carry both the no-map and the reusable property as these =
are
+logically contradictory.
+
 Linux implementation note:
 - If a "linux,cma-default" property is present, then Linux will use the
   region for the default pool of the contiguous memory allocator.
=2D-
2.28.0