On Mon, Jan 1, 2024 at 6:07 PM Marek Vasut marex@denx.de wrote:
Implement fdtdec_board_setup() auto-detection of ethernet PHY. This uses properties of the hardware and pull resistor placement.
If GPIO1_16 RGMII_MDC is HIGH, then R530 (MX8MM eDM SBC) or R390 (MX8MP eDM SBC) is populated. R530 or R390 is populated only on boards with AR8031 PHY.
If GPIO1_16 RGMII_MDC is LOW, then the in-SoM pull down is the dominant pull resistor. This is the case on boards with BCM54213PE PHY.
In case AR8031 PHY is populated, the PHY MDIO address is 0, in case BCM54213PE PHY is populated, the PHY MDIO address is 1, the fdtdec_board_setup() is used to patch the correct address into the U-Boot control DT.
Enable broadcom PHY support to support both PHYs.
Signed-off-by: Marek Vasut marex@denx.de
Applied, thanks.