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

Rob Herring
2016-10-10T13:18:41Z

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.

> correct MAC impedance mismatch using phy extended registers.
>
> Signed-off-by: Mugunthan V N <mugunthanvnm@ti.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.

> +
> +Note: ti,min-output-impedance and ti,max-output-impedance are mutually
> + exclusive. When both properties are present ti,max-output-impedance
> + takes precedence.
> +
> Default child nodes are standard Ethernet PHY device
> nodes as described in Documentation/devicetree/bindings/net/phy.txt
>
> --
> 2.10.0.372.g6fe1b14
>