For SoCs with SCU support, need setup stop mode via SCU firmware,
so this property can help indicate a resource.

Signed-off-by: Joakim Zhang <qiangqing.zh...@nxp.com>
---
 Documentation/devicetree/bindings/net/can/fsl-flexcan.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt 
b/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt
index 6af67f5e581c..839c0c0064a2 100644
--- a/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt
+++ b/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt
@@ -43,6 +43,10 @@ Optional properties:
                  0: clock source 0 (oscillator clock)
                  1: clock source 1 (peripheral clock)
 
+- fsl,can-index: The index of CAN instance.
+                 For SoCs with SCU support, need setup stop mode via SCU 
firmware,
+                 so this property can help indicate a resource.
+
 - wakeup-source: enable CAN remote wakeup
 
 Example:
@@ -54,4 +58,5 @@ Example:
                interrupt-parent = <&mpic>;
                clock-frequency = <200000000>; // filled in by bootloader
                fsl,clk-source = /bits/ 8 <0>; // select clock source 0 for PE
+               fsl,can-index = /bits/ 8 <1>; // the second CAN instance
        };
-- 
2.17.1

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