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

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Message-ID: <CO6PR18MB38737A567187B2BBAFACFF6AB0AC9@CO6PR18MB3873.namprd18.prod.outlook.com>
Date:   Sun, 10 Jan 2021 18:55:11 +0000
From:   Stefan Chulski <stefanc@...vell.com>
To:     Russell King - ARM Linux admin <linux@...linux.org.uk>
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

> > 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.

Stefan,
Regards.