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Re: [PATCH] Doc: Micrel-ksz90x1.txt: Update the Micrel phy documentation for ksz9031

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  Re: [PATCH] Doc: Micrel-ksz90x1.txt: Update the Micrel phy  documentation for ksz9031 Rob Herring <robh@kernel.org> - 2016-01-29 04:40 +0100

#1321466 — Re: [PATCH] Doc: Micrel-ksz90x1.txt: Update the Micrel phy documentation for ksz9031

On Thu, Jan 28, 2016 at 10:49:27AM -0600, dinguyen@opensource.altera.com wrote:
> From: Dinh Nguyen <dinguyen@opensource.altera.com>
> 
> Update the Micrel phy documentation for the KSZ9031 PHY to represent how
> the actual values are calculated from the code.
> 
> Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
> ---
>  .../devicetree/bindings/net/micrel-ksz90x1.txt     | 73 ++++++++++++++++++++++
>  1 file changed, 73 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/net/micrel-ksz90x1.txt b/Documentation/devicetree/bindings/net/micrel-ksz90x1.txt
> index f9c32ad..9535b2b 100644
> --- a/Documentation/devicetree/bindings/net/micrel-ksz90x1.txt
> +++ b/Documentation/devicetree/bindings/net/micrel-ksz90x1.txt
> @@ -36,6 +36,71 @@ KSZ9031:
>    value is 0, and the maximum is property-dependent. The increment
>    step is 60ps.
>  
> +  The KSZ9031 hardware supports a range of skew values from negative to
> +  positive, where the specific range is property dependent. All values
> +  specified in the devicetree are offset by the minimum value so they
> +  can be represented as positive integers in the devicetree since it's
> +  difficult to represent a negative number in the devictree.

I don't think that is true anymore. dtc should allow negative numbers 
AIUI. That would be much better here.

Rob

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