linux-kernel - [PATCH V4 3/6] dt-bindings: can: flexcan: add fsl,scu-index property to indicate a resource

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Date:   Wed, 21 Oct 2020 13:24:34 +0800
From:   Joakim Zhang <qiangqing.zhang@....com>
To:     mkl@...gutronix.de, robh+dt@...nel.org, shawnguo@...nel.org,
        s.hauer@...gutronix.de
Cc:     kernel@...gutronix.de, linux-imx@....com, victor.liu@....com,
        linux-can@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH V4 3/6] dt-bindings: can: flexcan: add fsl,scu-index property to indicate a resource

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

Signed-off-by: Joakim Zhang <qiangqing.zhang@....com>
---
 Documentation/devicetree/bindings/net/can/fsl-flexcan.txt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt b/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt
index 6af67f5e581c..38a7da4fef3f 100644
--- a/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt
+++ b/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt
@@ -43,6 +43,11 @@ Optional properties:
 		  0: clock source 0 (oscillator clock)
 		  1: clock source 1 (peripheral clock)
 
+- fsl,scu-index: The scu index of CAN instance.
+                 For SoCs with SCU support, need setup stop mode via SCU firmware,
+                 so this property can help indicate a resource. It supports up to
+                 3 CAN instances now, so the value should be 0, 1, or 2.
+
 - wakeup-source: enable CAN remote wakeup
 
 Example:
@@ -54,4 +59,5 @@ Example:
 		interrupt-parent = <&mpic>;
 		clock-frequency = <200000000>; // filled in by bootloader
 		fsl,clk-source = /bits/ 8 <0>; // select clock source 0 for PE
+		fsl,scu-index = /bits/ 8 <1>; // the second CAN instance
 	};
-- 
2.17.1