On Wed, Jan 27, 2021 at 01:43:16PM +0200, stef...@marvell.com wrote: > Armada hardware has a pause generation mechanism in GOP (MAC). > The GOP generate flow control frames based on an indication programmed in > Ports Control 0 Register. There is a bit per port. > However assertion of the PortX Pause bits in the ports control 0 register > only sends a one time pause. > To complement the function the GOP has a mechanism to periodically send pause > control messages based on periodic counters. > This mechanism ensures that the pause is effective as long as the Appropriate > PortX Pause is asserted.
I've tested this on my Macchiatobin SingleShot, which seems to be Ax silicon (and I've checked a couple of my other Armada 8040 platforms which are also Ax silicon too) and networking remains functional without flow control with the gigabit port achieving wire speed. I have not yet tested the 10G ports. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!
