Customer needs two ethernet port, as there is only one external port of CPSW on AM65xx, so use one PRU ethernet as second port.
Question:
Can use one MDIO port to control the two ethernet port on CPSW and PRU? if yes, would you please give a example for customer?
Software: Linux Processor SDK7.x or 8.x
Vineet,
Sorry for did not clear state, I mean a software example, dts configuration.
I checked AM64x EVM schematic, summarize PHY circuit as below. ICSSG RGMII1 and CPSW RGMII 1 use different MIDO port, ICSSG1 RGMII2 can select one of the MDIO port.
From PINMUX, the PRU PRG1_RGMII2 and CPSW RGMII2 share the same group pins, seems the design intent to use different MDIO port for CPSW and PRU Ethernet ports. When configure ICSSG1_RGMII2 as CPSW port, then configure U27 mux to select CPSW_RGMII1_MDIO, if configure ICSSG1_RGMII2 as PRG_RGMII2 signals, select PRG1_MIDO_MDIO from U27 mux as the PHY MDIO.
so use separated MDIO for CPSW and PRU Ethernet port.
