linux-kernel - Re: [PATCH v3 1/4] net: phy: dp83867: Add documentation for optional impedance control

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Date:   Wed, 12 Oct 2016 13:43:57 +0530
From:   Mugunthan V N <mugunthanvnm@...com>
To:     Rob Herring <robh@...nel.org>
CC:     <netdev@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-omap@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        Mark Rutland <mark.rutland@....com>,
        Tony Lindgren <tony@...mide.com>,
        Russell King <linux@...linux.org.uk>,
        Florian Fainelli <f.fainelli@...il.com>,
        David Miller <davem@...emloft.net>,
        Sekhar Nori <nsekhar@...com>
Subject: Re: [PATCH v3 1/4] net: phy: dp83867: Add documentation for optional
 impedance control

On Monday 10 October 2016 06:48 PM, Rob Herring wrote:
> On Thu, Oct 06, 2016 at 10:43:52AM +0530, Mugunthan V N wrote:
>> Add documention of ti,impedance-control which can be used to
> 
> Needs updating.

Oops, will update this in next version.

> 
>> correct MAC impedance mismatch using phy extended registers.
>>
>> Signed-off-by: Mugunthan V N <mugunthanvnm@...com>
>> ---
>>  Documentation/devicetree/bindings/net/ti,dp83867.txt | 12 ++++++++++++
>>  1 file changed, 12 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/net/ti,dp83867.txt b/Documentation/devicetree/bindings/net/ti,dp83867.txt
>> index 5d21141..85bf945 100644
>> --- a/Documentation/devicetree/bindings/net/ti,dp83867.txt
>> +++ b/Documentation/devicetree/bindings/net/ti,dp83867.txt
>> @@ -9,6 +9,18 @@ Required properties:
>>  	- ti,fifo-depth - Transmitt FIFO depth- see dt-bindings/net/ti-dp83867.h
>>  		for applicable values
>>  
>> +Optional property:
>> +	- ti,min-output-impedance - MAC Interface Impedance control to set
>> +				    the programmable output impedance to
>> +				    minimum value (35 ohms).
>> +	- ti,max-output-impedance - MAC Interface Impedance control to set
>> +				    the programmable output impedance to
>> +				    maximum value (70 ohms).
> 
> Define what are valid range of values for these.

The values are already mentioned in documentation as 35/70 ohms.
Are you mentioning about the register values?

Regards
Mugunthan V N