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AM6411: and DP83822 in RGMII mode, and booting from Ethernet

Part Number: AM6411
Other Parts Discussed in Thread: DP83822H

Tool/software:

(ref https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1285467/am6421-am6421-and-dp83822 )

1. Is the DP83822 in RGMII mode already supported?

2. Both AM6411 CPSW RGMII ports are connected to their own DP83822H PHY, and i want to use Ethernet boot, primary and backup.

DP83822 are strapped to enable autonegotiation (advisory i2414), in RGMII mode, and to have phy addresses 0x01 and 0x03.

AFAIU RGMII2 is used when booting, and intended to use "MDIO PHY scan used for link parameters" in boot config.

But how it knows which phy address to poll? Do i need to keep PHY on RGMII1 in reset?

3. Are the DP83822 delays configred correctly by default?
(as the bootconfig " Must be set to 0 for RGMII with internal Tx delay ")