18c2ecf20Sopenharmony_ciCommon bindings for HDMI CEC adapters 28c2ecf20Sopenharmony_ci 38c2ecf20Sopenharmony_ci- hdmi-phandle: phandle to the HDMI controller. 48c2ecf20Sopenharmony_ci 58c2ecf20Sopenharmony_ci- needs-hpd: if present the CEC support is only available when the HPD 68c2ecf20Sopenharmony_ci is high. Some boards only let the CEC pin through if the HPD is high, 78c2ecf20Sopenharmony_ci for example if there is a level converter that uses the HPD to power 88c2ecf20Sopenharmony_ci up or down. 9