linux-kernel - [PATCH v7 1/6] dt-bindings: mailbox: allow mbox-cells to be equal to 0

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Message-Id: <20180726065331.6186-2-o.rempel@pengutronix.de>
Date:   Thu, 26 Jul 2018 08:53:26 +0200
From:   Oleksij Rempel <o.rempel@...gutronix.de>
To:     Shawn Guo <shawnguo@...nel.org>,
        Fabio Estevam <fabio.estevam@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        "A.s. Dong" <aisheng.dong@....com>,
        Vladimir Zapolskiy <vladimir_zapolskiy@...tor.com>,
        Jassi Brar <jassisinghbrar@...il.com>
Cc:     Sudeep Holla <sudeep.holla@....com>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel@...gutronix.de,
        linux-arm-kernel@...ts.infradead.org,
        dl-linux-imx <linux-imx@....com>
Subject: [PATCH v7 1/6] dt-bindings: mailbox: allow mbox-cells to be equal to 0

From: Dong Aisheng <aisheng.dong@....com>

Mailbox devices may have only one channel which means the mbox-cells
at least 1 does not make sense for this type devices. Let's remove
that limitation to allow the mbox-cells to be equal to 0.

Cc: Mark Rutland <mark.rutland@....com>
Cc: Sudeep Holla <sudeep.holla@....com>
Cc: devicetree@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Reviewed-by: Rob Herring <robh@...nel.org>
Signed-off-by: Dong Aisheng <aisheng.dong@....com>
---
 Documentation/devicetree/bindings/mailbox/mailbox.txt | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/mailbox/mailbox.txt b/Documentation/devicetree/bindings/mailbox/mailbox.txt
index af8ecee2ac68..c2fcd054141a 100644
--- a/Documentation/devicetree/bindings/mailbox/mailbox.txt
+++ b/Documentation/devicetree/bindings/mailbox/mailbox.txt
@@ -6,8 +6,7 @@ assign appropriate mailbox channel to client drivers.
 * Mailbox Controller
 
 Required property:
-- #mbox-cells: Must be at least 1. Number of cells in a mailbox
-		specifier.
+- #mbox-cells: Number of cells in a mailbox specifier.
 
 Example:
 	mailbox: mailbox {
-- 
2.18.0