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

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Date:   Wed, 27 Jan 2021 14:05:53 +0000
From:   Russell King - ARM Linux admin <linux@...linux.org.uk>
To:     stefanc@...vell.com
Cc:     netdev@...r.kernel.org, thomas.petazzoni@...tlin.com,
        davem@...emloft.net, nadavh@...vell.com, ymarkman@...vell.com,
        linux-kernel@...r.kernel.org, kuba@...nel.org, mw@...ihalf.com,
        andrew@...n.ch, atenart@...nel.org
Subject: Re: [PATCH v4 net-next 19/19] net: mvpp2: add TX FC firmware check

On Wed, Jan 27, 2021 at 01:43:35PM +0200, stefanc@...vell.com wrote:
>  	if (priv->global_tx_fc && priv->hw_version != MVPP21) {
> -		val = mvpp2_cm3_read(priv, MSS_FC_COM_REG);
> -		val |= FLOW_CONTROL_ENABLE_BIT;
> -		mvpp2_cm3_write(priv, MSS_FC_COM_REG, val);
> +		err = mvpp2_enable_global_fc(priv);
> +		if (err) {
> +			dev_warn(&pdev->dev, "CM3 firmware not running, version should be higher than 18.09\n");
> +			dev_warn(&pdev->dev, "Flow control not supported\n");
> +		}

I've just booted this on my mcbin-ss, and I get:

mvpp2 f2000000.ethernet: CM3 firmware not running, version should be higher than 18.09
mvpp2 f4000000.ethernet: CM3 firmware not running, version should be higher than 18.09

which is rather odd, because I believe I'm running the 18.12 firmware
from git://github.com/MarvellEmbeddedProcessors/binaries-marvell
branch binaries-marvell-armada-18.12.

Any ideas?

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