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net: stmmac: enable clause 45 mdio support

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DWMAC4 is capable to support clause 45 mdio communication.
This patch enable the feature on stmmac_mdio_write() and
stmmac_mdio_read() by following phy_write_mmd() and
phy_read_mmd() mdiobus read write implementation format.

Reviewed-by: Li, Yifan <yifan2.li@intel.com>
Signed-off-by: Kweh Hock Leong <hock.leong.kweh@intel.com>
Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: Voon Weifeng <weifeng.voon@intel.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kweh Hock Leong 2019-07-06 01:33:27 +08:00 • committed by David S. Miller
parent 44e3725943
commit d4117d63a3
2 changed files with 37 additions and 8 deletions
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2
include/linux/phy.h
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@ -195,6 +195,8 @@ static inline const char *phy_modes(phy_interface_t interface)
/* Or MII_ADDR_C45 into regnum for read/write on mii_bus to enable the 21 bit
IEEE 802.3ae clause 45 addressing mode used by 10GIGE phy chips. */
#define MII_ADDR_C45 (1<<30)
#define MII_DEVADDR_C45_SHIFT 16
#define MII_REGADDR_C45_MASK GENMASK(15, 0)
struct device;
struct phylink;