Hi Anup,
Tested the entire V9 series with OpenSBI and mainline u-boot based on commit fc6c0e29a28f6 ("Prepare v2019.07-rc4") along with few Ramon Fried's patches present in your riscv_unleashed_clk_sync_v9 branch: between commit fc6c0e29a28f6 ("Prepare v2019.07-rc4") and commit 1a417ef71ce1 ("net: macb: apply sane DMA configuration").
With tftp able to boot complete linux.
MDIO and mii utils in U-boot correctly display details of Microsemi PHY VSC8541-01 device as below:
=> mdio list ethernet@10090000: 0 - Microsemi VSC8541 <--> ethernet@10090000
=> mii info 0 PHY 0x00: OUI = 0x01C1, Model = 0x37, Rev = 0x01, 100baseT, FDX
PHY address read from OTP: Address in ROM is 70:b3:d5:92:f0:1f
Tested-by: Sagar Kadam sagar.kadam@sifive.com
BR, Sagar Kadam