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@xxxxxxx>
Cc: Sudeep Holla <sudeep.holla@xxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
Signed-off-by: Dong Aisheng <aisheng.dong@xxxxxxx>
---
ChangeLog:
* New patch introduced in v3 series
* Actually there're already users in kernel with mbox-cells set to 0.
See:
arch/arm/boot/dts/bcm283x.dtsi:145: #mbox-cells = <0>;
---
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 af8ecee..c2fcd05 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 {
--
2.7.4
--
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