[v4,3/4] dt-bindings: can: m_can: Document new can transceiver binding

Message ID 20170810005916.27163-4-fcooper@ti.com
State Not Applicable, archived
Headers show

Commit Message

Franklin S Cooper Jr Aug. 10, 2017, 12:59 a.m.
Add information regarding can-transceiver binding. This is especially
important for MCAN since the IP allows CAN FD mode to run significantly
faster than what most transceivers are capable of.

Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
---
Drop unit address.
Switch from using fixed-transceiver to can-transceiver
Indicate that can-transceiver is an optional subnode not a property.

 Documentation/devicetree/bindings/net/can/m_can.txt | 9 +++++++++
 1 file changed, 9 insertions(+)

Comments

Rob Herring Aug. 17, 2017, 3:10 p.m. | #1
On Wed, Aug 09, 2017 at 07:59:15PM -0500, Franklin S Cooper Jr wrote:
> Add information regarding can-transceiver binding. This is especially
> important for MCAN since the IP allows CAN FD mode to run significantly
> faster than what most transceivers are capable of.
> 
> Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
> ---
> Drop unit address.
> Switch from using fixed-transceiver to can-transceiver
> Indicate that can-transceiver is an optional subnode not a property.
> 
>  Documentation/devicetree/bindings/net/can/m_can.txt | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/net/can/m_can.txt b/Documentation/devicetree/bindings/net/can/m_can.txt
> index 9e33177..ee90aac 100644
> --- a/Documentation/devicetree/bindings/net/can/m_can.txt
> +++ b/Documentation/devicetree/bindings/net/can/m_can.txt
> @@ -43,6 +43,11 @@ Required properties:
>  			  Please refer to 2.4.1 Message RAM Configuration in
>  			  Bosch M_CAN user manual for details.
>  
> +Optional Subnode:
> +- can-transceiver	: Can-transceiver subnode describing maximum speed
> +			  that can be used for CAN/CAN-FD modes. See
> +			  Documentation/devicetree/bindings/net/can/can-transceiver.txt
> +			  for details.
>  Example:
>  SoC dtsi:
>  m_can1: can@020e8000 {
> @@ -64,4 +69,8 @@ Board dts:
>  	pinctrl-names = "default";
>  	pinctrl-0 = <&pinctrl_m_can1>;
>  	status = "enabled";
> +
> +	can-transceiver@ {

ditto

Acked-by: Rob Herring <robh@kernel.org>

> +		max-bitrate = <5000000>;
> +	};
>  };
> -- 
> 2.9.4.dirty
> 
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Patch

diff --git a/Documentation/devicetree/bindings/net/can/m_can.txt b/Documentation/devicetree/bindings/net/can/m_can.txt
index 9e33177..ee90aac 100644
--- a/Documentation/devicetree/bindings/net/can/m_can.txt
+++ b/Documentation/devicetree/bindings/net/can/m_can.txt
@@ -43,6 +43,11 @@  Required properties:
 			  Please refer to 2.4.1 Message RAM Configuration in
 			  Bosch M_CAN user manual for details.
 
+Optional Subnode:
+- can-transceiver	: Can-transceiver subnode describing maximum speed
+			  that can be used for CAN/CAN-FD modes. See
+			  Documentation/devicetree/bindings/net/can/can-transceiver.txt
+			  for details.
 Example:
 SoC dtsi:
 m_can1: can@020e8000 {
@@ -64,4 +69,8 @@  Board dts:
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_m_can1>;
 	status = "enabled";
+
+	can-transceiver@ {
+		max-bitrate = <5000000>;
+	};
 };