> -----Original Message-----
> From: Joao Pinto [mailto:joao.pi...@synopsys.com]
> Sent: Wednesday, January 04, 2017 10:36 PM
> To: da...@davemloft.net
> Cc: Kweh, Hock Leong <hock.leong.k...@intel.com>; netdev@vger.kernel.org;
> Joao Pinto <joao.pi...@synopsys.com>
> Subject: [PATCH] stmmac: Enable Clause 45 PHYs in GMAC4 (eQOS)
>
> The eQOS IP Core (best known in stmmac as gmac4) has a register that must be
> set if using a Clause 45 PHY. If this register is not set, the PHY won't work.
> This patch will have no impact in setups using Clause 22 PHYs.
>
> Signed-off-by: Joao Pinto <jpi...@synopsys.com>
Hi Joao,
This is not working on our environment. We are using the 4-ETH-4-MGB-101 plugin
card.
Regards,
Wilson
> ---
> drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
> b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
> index b0344c2..676ae3c 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
> @@ -41,6 +41,7 @@
> #define MII_GMAC4_GOC_SHIFT 2
> #define MII_GMAC4_WRITE (1 << MII_GMAC4_GOC_SHIFT)
> #define MII_GMAC4_READ (3 << MII_GMAC4_GOC_SHIFT)
> +#define MII_CLAUSE45_PHY (1 << 1)
>
> static int stmmac_mdio_busy_wait(void __iomem *ioaddr, unsigned int
> mii_addr) { @@ -125,7 +126,7 @@ static int stmmac_mdio_write(struct
> mii_bus *bus, int phyaddr, int phyreg,
> value |= (priv->clk_csr << priv->hw->mii.clk_csr_shift)
> & priv->hw->mii.clk_csr_mask;
> if (priv->plat->has_gmac4)
> - value |= MII_GMAC4_WRITE;
> + value |= MII_GMAC4_WRITE | MII_CLAUSE45_PHY;
> else
> value |= MII_WRITE;
>
> --
> 2.9.3
