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net: dsa: mv88e6xxx: Implement the 6390 external MDIO bus
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With all the infrastructure in place, implement access to the external
MDIO bus on the 6390 family.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Andrew Lunn authored and David S. Miller committed Jan 24, 2017
1 parent a3c53be commit c61a6a7
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Showing 2 changed files with 9 additions and 0 deletions.
8 changes: 8 additions & 0 deletions drivers/net/dsa/mv88e6xxx/global2.c
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Original file line number Diff line number Diff line change
Expand Up @@ -506,8 +506,12 @@ int mv88e6xxx_g2_smi_phy_read(struct mv88e6xxx_chip *chip,
int addr, int reg, u16 *val)
{
u16 cmd = GLOBAL2_SMI_PHY_CMD_OP_22_READ_DATA | (addr << 5) | reg;
struct mv88e6xxx_mdio_bus *mdio_bus = bus->priv;
int err;

if (mdio_bus->external)
cmd |= GLOBAL2_SMI_PHY_CMD_EXTERNAL;

err = mv88e6xxx_g2_smi_phy_wait(chip);
if (err)
return err;
Expand All @@ -524,8 +528,12 @@ int mv88e6xxx_g2_smi_phy_write(struct mv88e6xxx_chip *chip,
int addr, int reg, u16 val)
{
u16 cmd = GLOBAL2_SMI_PHY_CMD_OP_22_WRITE_DATA | (addr << 5) | reg;
struct mv88e6xxx_mdio_bus *mdio_bus = bus->priv;
int err;

if (mdio_bus->external)
cmd |= GLOBAL2_SMI_PHY_CMD_EXTERNAL;

err = mv88e6xxx_g2_smi_phy_wait(chip);
if (err)
return err;
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1 change: 1 addition & 0 deletions drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
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Original file line number Diff line number Diff line change
Expand Up @@ -387,6 +387,7 @@
#define GLOBAL2_PTP_AVB_DATA 0x17
#define GLOBAL2_SMI_PHY_CMD 0x18
#define GLOBAL2_SMI_PHY_CMD_BUSY BIT(15)
#define GLOBAL2_SMI_PHY_CMD_EXTERNAL BIT(13)
#define GLOBAL2_SMI_PHY_CMD_MODE_22 BIT(12)
#define GLOBAL2_SMI_PHY_CMD_OP_22_WRITE_DATA ((0x1 << 10) | \
GLOBAL2_SMI_PHY_CMD_MODE_22 | \
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