Hello imx6 expertise,
we used ksz8863 siwth port 3 connect to imx6dl mac with RMII interface, but I can not make it working.
the ENET_REF_CLK we used is mentioned in another thread KSZ8863 Phy 1 not found on u-boot
But on IMX6SDLRM.pdf, page 1066 table 23-1
It shows ENET_REF_CLK should use GPIO_16 for RMII mode, Use ENET_TX_CLK for MII mode.
please confirm can I use ENET_TX_CLK as reference 50M clk input to imx6 as RMII mode or the GPIO_16 is the only way right for RMII mode?
For RMII mode, there are 2 PADs provided for ENET_REF_CLK, One is GPIO_16, The other is RGMII_TX_CTL, ENET_REF_CLK pad is for ENET_TX_CLK signal when FEC works with MII mode, you can't use it.