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From:   Geert Uytterhoeven <geert+renesas@glider.be>
To:     Rob Herring <robh@kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     linux-serial@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org,
        Geert Uytterhoeven <geert+renesas@glider.be>
Subject: [PATCH] dt-bindings: serial: Document serialN aliases
Date:   Wed, 25 Mar 2020 10:54:42 +0100
Message-Id: <20200325095442.11191-1-geert+renesas@glider.be>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Document the format of aliases referring to UARTs.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
 Documentation/devicetree/bindings/serial/serial.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/serial/serial.yaml b/Documentation/devicetree/bindings/serial/serial.yaml
index dd97ecd1a7fe8ddd..53204d90d0c74ebd 100644
--- a/Documentation/devicetree/bindings/serial/serial.yaml
+++ b/Documentation/devicetree/bindings/serial/serial.yaml
@@ -15,6 +15,10 @@ description:
   device tree.  Whether these properties apply to a particular device depends
   on the DT bindings for the actual device.
 
+  Each enabled UART may have an optional "serialN" alias in the "aliases" node,
+  where N is the port number (non-negative decimal integer) as printed on the
+  label next to the physical port.
+
 properties:
   $nodename:
     pattern: "^serial(@.*)?$"
-- 
2.17.1