Answers in many threads explicitly state that the ENET_REF_CLK iMX6 input must be driven by a 125MHz external source. But MCIMX6SX SDB schematics show C346 and R134 as "DNP", so the ENET1_TX_CLK (#A7) pin isn't connected.
1. Are the MCIMX6SX SDB schematics correct? Are C346 and R134 are populated? Or the ENET1_TX_CLK pin is connected to a 125MHz source in another way.
2. If every used RGMII use its own (separate) ENET_REF_CLK input or they can share one iMX6 input?