Add documentation to describe usage of the new can-transceiver binding.
This new binding is applicable for any CAN device therefore it exists as
its own document.

Signed-off-by: Franklin S Cooper Jr <fcoo...@ti.com>
Acked-by: Rob Herring <r...@kernel.org>
---
Version 5 changes:
Remove @ symbol from can-transceiver example

 .../bindings/net/can/can-transceiver.txt           | 24 ++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 
Documentation/devicetree/bindings/net/can/can-transceiver.txt

diff --git a/Documentation/devicetree/bindings/net/can/can-transceiver.txt 
b/Documentation/devicetree/bindings/net/can/can-transceiver.txt
new file mode 100644
index 0000000..0011f53
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/can/can-transceiver.txt
@@ -0,0 +1,24 @@
+Generic CAN transceiver Device Tree binding
+------------------------------
+
+CAN transceiver typically limits the max speed in standard CAN and CAN FD
+modes. Typically these limitations are static and the transceivers themselves
+provide no way to detect this limitation at runtime. For this situation,
+the "can-transceiver" node can be used.
+
+Required Properties:
+ max-bitrate:  a positive non 0 value that determines the max
+               speed that CAN/CAN-FD can run. Any other value
+               will be ignored.
+
+Examples:
+
+Based on Texas Instrument's TCAN1042HGV CAN Transceiver
+
+m_can0 {
+       ....
+       can-transceiver {
+               max-bitrate = <5000000>;
+       };
+       ...
+};
-- 
2.9.4.dirty

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