Hi Laurent. > > > > > > +Optional properties: > > > + > > > +- renesas,companion : phandle to the companion LVDS encoder. This property is > > > + mandatory for the first LVDS encoder on D3 and E3 SoCs, and shall point to > > > + the second encoder to be used as a companion in dual-link mode. It shall not > > > + be set for any other LVDS encoder. > > > > If the D3 and E3 socs do not mandate the use of dual-link, then what to > > do in the DT? Because according to the above this property must be > > specified for D3 and E3 SOC's. > > This property doesn't enable dual-link mode, it only specifies the > companion LVDS encoder used for dual-link mode, when enabled (through > communication between the LVDS encoder and the LVDS receiver at > runtime). > > Jacopo had a similar comment so I suppose this isn't clear. How would > you word it to make it clear ? Let me try: - renesas,companion : phandle to the companion LVDS encoder. This property is mandatory for the first LVDS encoder on D3 and E3 SoCs when dual-link mode is supported. The property shall pont to the phandle of the second encoder to be used as a companion in dual-link mode. It shall not be set for any other LVDS encoder. The main difference is "when dual-link mode is supported". As per my understanding this property is only relevant when the actual HW supports / uses dual-link mode. So for a board that do not even wire up dual-link, then setting the property would be confusing. I hope this better describes my understanding. Sam
