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

[Stefan Chulski]

> -----Original Message-----
> From: Russell King - ARM Linux admin <li...@armlinux.org.uk>
> Sent: Wednesday, January 27, 2021 5:00 PM
> To: Stefan Chulski <stef...@marvell.com>
> Cc: net...@vger.kernel.org; thomas.petazz...@bootlin.com;
> da...@davemloft.net; Nadav Haklai <nad...@marvell.com>; Yan
> Markman <ymark...@marvell.com>; linux-kernel@vger.kernel.org;
> k...@kernel.org; m...@semihalf.com; and...@lunn.ch;
> aten...@kernel.org
> Subject: Re: [EXT] Re: [PATCH v4 net-next 19/19] net: mvpp2: add TX FC
> firmware check
> 
> On Wed, Jan 27, 2021 at 02:37:34PM +0000, Stefan Chulski wrote:
> > Your mcbin-ss is A8K AX or A8K B0? On AX revisions we do not have FC
> support in firmware.
> 
> How do I tell? I don't want to remove the heatsink, and I don't see anything
> in MV-S111188-00E. I didn't grab a copy of the Errata before I accidentally 
> let
> me extranet access expire.

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

Regards.