linux-kernel - Re: [EXT] Re: [PATCH v4 net-next 19/19] net: mvpp2: add TX FC firmware check

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Message-ID: <20210127151319.GO1551@shell.armlinux.org.uk>
Date:   Wed, 27 Jan 2021 15:13:19 +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 v4 net-next 19/19] net: mvpp2: add TX FC
 firmware check

On Wed, Jan 27, 2021 at 03:10:11PM +0000, Stefan Chulski wrote:
> You can devmem 0xF2400240(Device ID Status Register).
> #define A8040_B0_DEVICE_ID      0x8045
> #define A8040_AX_DEVICE_ID      0x8040
> #define A7040_B0_DEVICE_ID      0x7045
> #define A7040_AX_DEVICE_ID      0x7040
> #define A3900_A1_DEVICE_ID      0x6025
> #define CN9130_DEVICE_ID        0x7025

Thanks. 0x00028040, so it's AX silicon. Is there nothing that can be
done for flow control on that?

It would probably also be a good idea to state this requirement in the
message as well, rather than just suggesting the firmware revision.

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