[U-Boot] [PATCH v3] Support for multiple SGMII/TBI interfaces for TSEC ethernet

[Ben Warren <biggerbadderben@gmail.com>]

Andy,

You're much more qualified than me to accept or reject this, so if you 
don't mind, please pick it up.

regards,
Ben

Peter Tyser wrote:
> Fix TBI PHY accesses to use the proper offset in CPU register space.  The
> previous code would incorrectly access the TBI PHY by reading/writing to CPU
> register space at the same location as would be used to access external PHYs.
>
> Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
> ---
>
> Dohh... v2 of the patch introduced a compile warning.  Please apply
> this version instead.
>
> I replaced the hardcoding of CFG_TBIPA_VALUE in the tsec_configure_serdes()
> to support possible changes of the TBI addressing down the road, but
> kept the default TBI PHY address at CFG_TBIPA_VALUE as Andy Flemming
> suggested.
>
>  drivers/net/tsec.c |   10 +++++-----
>  1 files changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/net/tsec.c b/drivers/net/tsec.c
> index f81211a..cc7d528 100644
> --- a/drivers/net/tsec.c
> +++ b/drivers/net/tsec.c
> @@ -283,11 +283,13 @@ uint tsec_local_mdio_read(volatile tsec_t *phyregs, uint phyid, uint regnum)
>  /* Configure the TBI for SGMII operation */
>  static void tsec_configure_serdes(struct tsec_private *priv)
>  {
> -	tsec_local_mdio_write(priv->phyregs, CFG_TBIPA_VALUE, TBI_ANA,
> +	/* Access TBI PHY registers at given TSEC register offset as opposed to the
> +	 * register offset used for external PHY accesses */
> +	tsec_local_mdio_write(priv->regs, priv->regs->tbipa, TBI_ANA,
>  			TBIANA_SETTINGS);
> -	tsec_local_mdio_write(priv->phyregs, CFG_TBIPA_VALUE, TBI_TBICON,
> +	tsec_local_mdio_write(priv->regs, priv->regs->tbipa, TBI_TBICON,
>  			TBICON_CLK_SELECT);
> -	tsec_local_mdio_write(priv->phyregs, CFG_TBIPA_VALUE, TBI_CR,
> +	tsec_local_mdio_write(priv->regs, priv->regs->tbipa, TBI_CR,
>  			TBICR_SETTINGS);
>  }
>  
> @@ -299,12 +301,10 @@ static int init_phy(struct eth_device *dev)
>  {
>  	struct tsec_private *priv = (struct tsec_private *)dev->priv;
>  	struct phy_info *curphy;
> -	volatile tsec_t *phyregs = priv->phyregs;
>  	volatile tsec_t *regs = priv->regs;
>  
>  	/* Assign a Physical address to the TBI */
>  	regs->tbipa = CFG_TBIPA_VALUE;
> -	phyregs->tbipa = CFG_TBIPA_VALUE;
>  	asm("sync");
>  
>  	/* Reset MII (due to new addresses) */
>