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Date:   Thu, 3 Aug 2017 04:54:31 -0500
From:   Franklin S Cooper Jr <fcooper@...com>
To:     Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <netdev@...r.kernel.org>, <linux-can@...r.kernel.org>,
        <wg@...ndegger.com>, <mkl@...gutronix.de>, <robh+dt@...nel.org>,
        <quentin.schulz@...e-electrons.com>,
        <dev.kurt@...dijck-laurijssen.be>, <andrew@...n.ch>,
        <socketcan@...tkopp.net>
Subject: Re: [PATCH v3 3/4] dt-bindings: can: m_can: Include reference to new
 fixed transceiver binding



On 08/03/2017 04:20 AM, Sergei Shtylyov wrote:
> On 8/3/2017 3:51 AM, Franklin S Cooper Jr wrote:
> 
>> 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 <fcooper@...com>
>> ---
>>   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".

> 
>> +              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@...e8000 {
>> @@ -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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