czw., 28 sty 2021 o 17:43 Russell King - ARM Linux admin <li...@armlinux.org.uk> napisał(a): > > 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. > > --
Thanks Russell. I'll stress and verify CN913x platform with the appropriate firmware. This should happen after the weekend, as I don't have an immediate access to our lab in order to replug the cables. I'll update here about the results. Best regards, Marcin
