On Wed, 19 Jan 2022 14:11:17 +0100, 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. > > Signed-off-by: Marek Behún <kabel@xxxxxxxxxx> > --- > Change since v2: > - removed 'select:' as requested by Rob. Instead the schema should be > referenced by any binding that uses it. This also fixed indentation > warnings from Rob's bot, since they warned about lines in the select > statement > --- > .../bindings/phy/transmit-amplitude.yaml | 103 ++++++++++++++++++ > 1 file changed, 103 insertions(+) > create mode 100644 Documentation/devicetree/bindings/phy/transmit-amplitude.yaml > Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
