> -----Original Message-----
> From: Russell King - ARM Linux admin <li...@armlinux.org.uk>
> Sent: Wednesday, January 27, 2021 4:06 PM
> To: Stefan Chulski <stef...@marvell.com>
> Cc: netdev@vger.kernel.org; thomas.petazz...@bootlin.com;
> da...@davemloft.net; Nadav Haklai <nad...@marvell.com>; Yan
> Markman <ymark...@marvell.com>; linux-ker...@vger.kernel.org;
> k...@kernel.org; m...@semihalf.com; and...@lunn.ch;
> aten...@kernel.org
> Subject: [EXT] Re: [PATCH v4 net-next 19/19] net: mvpp2: add TX FC
> firmware check
>
> External Email
>
> ----------------------------------------------------------------------
> On Wed, Jan 27, 2021 at 01:43:35PM +0200, stef...@marvell.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?
Your mcbin-ss is A8K AX or A8K B0? On AX revisions we do not have FC support in
firmware.
Regards.
