Thread (12 messages) 12 messages, 2 authors, 2017-08-10

Re: [PATCH v3 3/4] dt-bindings: can: m_can: Include reference to new fixed transceiver binding

From: Franklin S Cooper Jr <hidden>
Date: 2017-08-03 11:56:43
Also in: linux-can, linux-devicetree, lkml


On 08/03/2017 04:20 AM, Sergei Shtylyov wrote:
On 8/3/2017 3:51 AM, Franklin S Cooper Jr wrote:
quoted
Add information regarding fixed 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 <redacted>
---
  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..0b62f47 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 properties:
+- fixed-transceiver    : Fixed-transceiver subnode describing maximum
speed
   Subnode is not a property.
Ok makes sense. Several bindings refer to fixed-link as an optional
property. I thought there was some kind of weird reasoning to do so
which I decided to follow. I'll update it to say "Optional subnode".
quoted
+              that can be used for CAN/CAN-FD modes. See
+             
Documentation/devicetree/bindings/net/can/fixed-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";
+
+    fixed-transceiver@0 {
   Same comments here as in previous patch.
Will fix.
[...]

MBR, Sergei
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