On 04/17/2018 02:02 AM, Vicentiu Galanopulo wrote:
> The extra property enables the discovery on the MDIO bus
> of the PHYs which have a vendor specific address space
> for accessing the C45 MDIO registers.
>
> Signed-off-by: Vicentiu Galanopulo <vicentiu.galanopulo@xxxxxxx>
> ---
> Documentation/devicetree/bindings/net/phy.txt | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/net/phy.txt b/Documentation/devicetree/bindings/net/phy.txt
> index d2169a5..82692e2 100644
> --- a/Documentation/devicetree/bindings/net/phy.txt
> +++ b/Documentation/devicetree/bindings/net/phy.txt
> @@ -61,6 +61,11 @@ Optional Properties:
> - reset-deassert-us: Delay after the reset was deasserted in microseconds.
> If this property is missing the delay will be skipped.
>
> +- dev-addr: If set, it indicates the device address of the PHY to be used
> + when accessing the C45 PHY registers over MDIO. It is used for vendor specific
> + register space addresses that do no conform to standard address for the MDIO
> + registers (e.g. MMD30)
Rob made that comment earlier, and I have to ask again now, why don't we
have the Clause 45 PHY binding be modified such that you have a reg
property that has #address-size = 2? This should be entirely backwards
compatible, but it would allow you to specify that device address in a
more traditional way.
> +
> Example:
>
> ethernet-phy@0 {
> @@ -72,4 +77,5 @@ ethernet-phy@0 {
> reset-gpios = <&gpio1 4 GPIO_ACTIVE_LOW>;
> reset-assert-us = <1000>;
> reset-deassert-us = <2000>;
> + dev-addr = <0x1e>;
> };
>
--
Florian
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