netdev - RE: [PATCH net-next v4 1/2] ixgbe: register a mdiobus

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Message-ID: <26D9FDECA4FBDD4AADA65D8E2FC68A4A1D32C606@ORSMSX104.amr.corp.intel.com>
Date:   Tue, 4 Dec 2018 16:58:46 +0000
From:   "Bowers, AndrewX" <andrewx.bowers@...el.com>
To:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>
Subject: RE: [PATCH net-next v4 1/2] ixgbe: register a mdiobus

> -----Original Message-----
> From: Intel-wired-lan [mailto:intel-wired-lan-bounces@...osl.org] On
> Behalf Of Steve Douthit
> Sent: Monday, December 3, 2018 12:15 PM
> To: Kirsher, Jeffrey T <jeffrey.t.kirsher@...el.com>
> Cc: Andrew Lunn <andrew@...n.ch>; Florian Fainelli <f.fainelli@...il.com>;
> netdev@...r.kernel.org; intel-wired-lan@...ts.osuosl.org; David S. Miller
> <davem@...emloft.net>
> Subject: [Intel-wired-lan] [PATCH net-next v4 1/2] ixgbe: register a mdiobus
> 
> Most dsa devices expect a 'struct mii_bus' pointer to talk to switches via the
> MII interface.
> 
> While this works for dsa devices, it will not work safely with Linux PHYs in all
> configurations since the firmware of the ixgbe device may be polling some
> PHY addresses in the background.
> 
> Signed-off-by: Stephen Douthit <stephend@...icom-usa.com>
> Reviewed-by: Andrew Lunn <andrew@...n.ch>
> Reviewed-by: Florian Fainelli <f.fainelli@...il.com>
> ---
>  drivers/net/ethernet/intel/Kconfig            |   1 +
>  drivers/net/ethernet/intel/ixgbe/ixgbe.h      |   2 +
>  drivers/net/ethernet/intel/ixgbe/ixgbe_main.c |   5 +
>  drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c  | 299 ++++++++++++++++++
>  drivers/net/ethernet/intel/ixgbe/ixgbe_phy.h  |   2 +
>  5 files changed, 309 insertions(+)

Tested-by: Andrew Bowers <andrewx.bowers@...el.com>