[PATCH devicetree v3] dt-bindings: phy: Add `tx-p2p-microvolt` property binding
Florian Fainelli
f.fainelli at gmail.com
Fri Jan 21 11:18:09 PST 2022
On 1/19/22 5:11 AM, Marek Behún wrote:
> Common PHYs and network PCSes often have the possibility to specify
> peak-to-peak voltage on the differential pair - the default voltage
> sometimes needs to be changed for a particular board.
>
> Add properties `tx-p2p-microvolt` and `tx-p2p-microvolt-names` for this
> purpose. The second property is needed to specify the mode for the
> corresponding voltage in the `tx-p2p-microvolt` property, if the voltage
> is to be used only for speficic mode. More voltage-mode pairs can be
> specified.
>
> Example usage with only one voltage (it will be used for all supported
> PHY modes, the `tx-p2p-microvolt-names` property is not needed in this
> case):
>
> tx-p2p-microvolt = <915000>;
>
> Example usage with voltages for multiple modes:
>
> tx-p2p-microvolt = <915000>, <1100000>, <1200000>;
> tx-p2p-microvolt-names = "2500base-x", "usb", "pcie";
>
> Add these properties into a separate file phy/transmit-amplitude.yaml,
> which should be referenced by any binding that uses it.
p2p commonly means peer to peer which incidentally could be confusing,
can you spell out the property entire:
tx-peaktopeak-microvolt or:
tx-pk2pk-microvolt for a more compact name maybe?
--
Florian
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