netdev - Re: [PATCH 4/4] phy: add RTBI mode for m88e1111

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Date:	Thu, 14 Jan 2010 10:20:09 -0600
From:	Kumar Gala <galak@...nel.crashing.org>
To:	Liu Yu <Yu.Liu@...escale.com>
Cc:	davem@...emloft.net, linuxppc-dev@...ts.ozlabs.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH 4/4] phy: add RTBI mode for m88e1111


On Jan 14, 2010, at 2:13 AM, Liu Yu wrote:

> Signed-off-by: Liu Yu <yu.liu@...escale.com>
> ---
> drivers/net/phy/marvell.c |   38 ++++++++++++++++++++++++++++++++++++++
> 1 files changed, 38 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c
> index 6f69b9b..65ed385 100644
> --- a/drivers/net/phy/marvell.c
> +++ b/drivers/net/phy/marvell.c
> @@ -63,6 +63,7 @@
> #define MII_M1111_HWCFG_MODE_COPPER_RGMII	0xb
> #define MII_M1111_HWCFG_MODE_FIBER_RGMII	0x3
> #define MII_M1111_HWCFG_MODE_SGMII_NO_CLK	0x4
> +#define MII_M1111_HWCFG_MODE_COPPER_RTBI	0x9
> #define MII_M1111_HWCFG_FIBER_COPPER_AUTO	0x8000
> #define MII_M1111_HWCFG_FIBER_COPPER_RES	0x2000
> 
> @@ -269,6 +270,43 @@ static int m88e1111_config_init(struct phy_device *phydev)
> 			return err;
> 	}
> 
> +	if (phydev->interface == PHY_INTERFACE_MODE_RTBI) {
> +		temp = phy_read(phydev, MII_M1111_PHY_EXT_CR);
> +		if (temp < 0)
> +			return temp;
> +		temp |= (MII_M1111_RX_DELAY | MII_M1111_TX_DELAY);
> +		err = phy_write(phydev, MII_M1111_PHY_EXT_CR, temp);
> +		if (err < 0)
> +			return err;
> +
> +		temp = phy_read(phydev, MII_M1111_PHY_EXT_SR);
> +		if (temp < 0)
> +			return temp;
> +		temp &= ~(MII_M1111_HWCFG_MODE_MASK | MII_M1111_HWCFG_FIBER_COPPER_RES);
> +		temp |= 0x7 | MII_M1111_HWCFG_FIBER_COPPER_AUTO;

Does this magic 0x7 have some meaning?

> +		err = phy_write(phydev, MII_M1111_PHY_EXT_SR, temp);
> +		if (err < 0)
> +			return err;
> +
> +		/* soft reset */
> +		err = phy_write(phydev, MII_BMCR, BMCR_RESET);
> +		if (err < 0)
> +			return err;
> +		do
> +			temp = phy_read(phydev, MII_BMCR);
> +		while (temp & BMCR_RESET);
> +
> +		temp = phy_read(phydev, MII_M1111_PHY_EXT_SR);
> +		if (temp < 0)
> +			return temp;
> +		temp &= ~(MII_M1111_HWCFG_MODE_MASK | MII_M1111_HWCFG_FIBER_COPPER_RES);
> +		temp |= MII_M1111_HWCFG_MODE_COPPER_RTBI | MII_M1111_HWCFG_FIBER_COPPER_AUTO;
> +		err = phy_write(phydev, MII_M1111_PHY_EXT_SR, temp);
> +		if (err < 0)
> +			return err;
> +	}
> +
> +
> 	err = phy_write(phydev, MII_BMCR, BMCR_RESET);
> 	if (err < 0)
> 		return err;
> -- 
> 1.6.4

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