linux-kernel - Re: [EXT] Re: [PATCH RFC net-next 00/19] net: mvpp2: Add TX Flow Control support

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Message-ID: <20210110190118.GP1551@shell.armlinux.org.uk>
Date:   Sun, 10 Jan 2021 19:01:18 +0000
From:   Russell King - ARM Linux admin <linux@...linux.org.uk>
To:     Stefan Chulski <stefanc@...vell.com>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "thomas.petazzoni@...tlin.com" <thomas.petazzoni@...tlin.com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        Nadav Haklai <nadavh@...vell.com>,
        Yan Markman <ymarkman@...vell.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "mw@...ihalf.com" <mw@...ihalf.com>,
        "andrew@...n.ch" <andrew@...n.ch>,
        "atenart@...nel.org" <atenart@...nel.org>
Subject: Re: [EXT] Re: [PATCH RFC net-next  00/19] net: mvpp2: Add TX Flow
 Control support

On Sun, Jan 10, 2021 at 06:55:11PM +0000, Stefan Chulski wrote:
> > > not connected to the GOP flow control generation mechanism.
> > > To solve this issue Armada has firmware running on CM3 CPU dedectated
> > > for Flow Control support. Firmware monitors Packet Processor resources
> > > and asserts XON/XOFF by writing to Ports Control 0 Register.
> > 
> > What is the minimum firmware version that supports this?
> > 
> 
> Support were added to firmware about two years ago. 
> All releases from 18.09 should has it.

Please add that vital bit of information somewhere appropriate.
I would not be surprised if people are still running e.g. 17.10
on some of their Armada 8040 boards. My Macchiatobin which is
acting as a server currently has 17.10, although I plan to upgrade
it to 18.12 in about three to six months time, once I've well and
truely proven that my ext4 problems are resolved.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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