On Thu, Jul 09, 2020 at 11:35:23PM +0200, Michael Walle wrote:
> The constants are taken from the USXGMII Singleport Copper Interface
> specification. The naming are based on the SGMII ones, but with an MDIO_
> prefix.
> 
> Signed-off-by: Michael Walle <mich...@walle.cc>
> ---
>  include/uapi/linux/mdio.h | 26 ++++++++++++++++++++++++++
>  1 file changed, 26 insertions(+)
> 
> diff --git a/include/uapi/linux/mdio.h b/include/uapi/linux/mdio.h
> index 4bcb41c71b8c..784723072578 100644
> --- a/include/uapi/linux/mdio.h
> +++ b/include/uapi/linux/mdio.h
> @@ -324,4 +324,30 @@ static inline __u16 mdio_phy_id_c45(int prtad, int devad)
>       return MDIO_PHY_ID_C45 | (prtad << 5) | devad;
>  }
>  
> +/* UsxgmiiChannelInfo[15:0] for USXGMII in-band auto-negotiation.*/
> +#define MDIO_LPA_USXGMII_EEE_CLK_STP 0x0080  /* EEE clock stop supported */
> +#define MDIO_LPA_USXGMII_EEE         0x0100  /* EEE supported */
> +#define MDIO_LPA_USXGMII_SPD_MASK    0x0e00  /* USXGMII speed mask */
> +#define MDIO_LPA_USXGMII_FULL_DUPLEX 0x1000  /* USXGMII full duplex */
> +#define MDIO_LPA_USXGMII_DPX_SPD_MASK        0x1e00  /* USXGMII duplex and 
> speed bits */
> +#define MDIO_LPA_USXGMII_10          0x0000  /* 10Mbps */
> +#define MDIO_LPA_USXGMII_10HALF              0x0000  /* 10Mbps half-duplex */
> +#define MDIO_LPA_USXGMII_10FULL              0x1000  /* 10Mbps full-duplex */
> +#define MDIO_LPA_USXGMII_100         0x0200  /* 100Mbps */
> +#define MDIO_LPA_USXGMII_100HALF     0x0200  /* 100Mbps half-duplex */
> +#define MDIO_LPA_USXGMII_100FULL     0x1200  /* 100Mbps full-duplex */
> +#define MDIO_LPA_USXGMII_1000                0x0400  /* 1000Mbps */
> +#define MDIO_LPA_USXGMII_1000HALF    0x0400  /* 1000Mbps half-duplex */
> +#define MDIO_LPA_USXGMII_1000FULL    0x1400  /* 1000Mbps full-duplex */
> +#define MDIO_LPA_USXGMII_10G         0x0600  /* 10Gbps */
> +#define MDIO_LPA_USXGMII_10GHALF     0x0600  /* 10Gbps half-duplex */
> +#define MDIO_LPA_USXGMII_10GFULL     0x1600  /* 10Gbps full-duplex */
> +#define MDIO_LPA_USXGMII_2500                0x0800  /* 2500Mbps */
> +#define MDIO_LPA_USXGMII_2500HALF    0x0800  /* 2500Mbps half-duplex */
> +#define MDIO_LPA_USXGMII_2500FULL    0x1800  /* 2500Mbps full-duplex */
> +#define MDIO_LPA_USXGMII_5000                0x0a00  /* 5000Mbps */
> +#define MDIO_LPA_USXGMII_5000HALF    0x0a00  /* 5000Mbps half-duplex */
> +#define MDIO_LPA_USXGMII_5000FULL    0x1a00  /* 5000Mbps full-duplex */
> +#define MDIO_LPA_USXGMII_LINK                0x8000  /* PHY link with 
> copper-side partner */

btw, the only thing which is missing from this is bit 0.

One other point - in the USXGMII specification, this appears to be
somewhat symmetrical - the same definitions are listed as being
used for PHY to MAC as for MAC to PHY (presumably as part of the
acknowledgement that the MAC actually switched to that speed.)
So, it probably makes sense to drop the LPA_ infix.

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