Documentation: can: flexcan: Add big-endian property to device tree

The FlexCAN controller can be modelled as little or big endian depending
on SOC design. This device tree property identifies the controller
endianness and the driver reads/writes controller registers based on
that.

This is optional property. i.e. if this property is not present in
device tree node then controller is assumed to be little endian. if this
property is present then controller is assumed to be big endian.

Signed-off-by: Pankaj Bansal <pankaj.bansal@nxp.com>
Reviewed-by: Poonam Aggrwal <poonam.aggrwal@nxp.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt b/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt
index 56d6cc336e1cb2adcd842767af4e403f0a9f447b..bfc0c433654f4e094143bf371a2f10cef6611d8e 100644 (file)
--- a/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt
+++ b/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt
@@ -18,6 +18,12 @@ Optional properties:
 
 - xceiver-supply: Regulator that powers the CAN transceiver
 
+- big-endian: This means the registers of FlexCAN controller are big endian.
+              This is optional property.i.e. if this property is not present in
+              device tree node then controller is assumed to be little endian.
+              if this property is present then controller is assumed to be big
+              endian.
+
 Example:
 
        can@1c000 {