> [2] > https://github.com/ARM-software/arm-trusted-firmware/blob/master/drivers/marvell/comphy/phy-comphy-3700.c Yes, I used mainline atf (it did not work out of the box with 18.09 atf-marvell of course). But there is no _power_off function for SGMII, nor a digital_reset function like in cp110 implementation. Marek