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net: mv88e61xx: Add support for fixed links

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On some boards these switches are wired directly into a SERDES
interface on another Ethernet MAC. Add the ability to specify
these kinds of boards using CONFIG_MV88E61XX_FIXED_PORTS which defines
a bit mask of these fixed ports.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
This commit is contained in:
Chris Packham 2016-08-26 17:30:26 +12:00 committed by Joe Hershberger
parent 65d4d00abc
commit b755abecd4
1 changed files with 43 additions and 0 deletions
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43
drivers/net/phy/mv88e61xx.c
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@ -103,8 +103,16 @@
#define PORT_REG_STATUS_CMODE_1000BASE_X 0x9
#define PORT_REG_STATUS_CMODE_SGMII 0xa
#define PORT_REG_PHYS_CTRL_PCS_AN_EN BIT(10)
#define PORT_REG_PHYS_CTRL_PCS_AN_RST BIT(9)
#define PORT_REG_PHYS_CTRL_FC_VALUE BIT(7)
#define PORT_REG_PHYS_CTRL_FC_FORCE BIT(6)
#define PORT_REG_PHYS_CTRL_LINK_VALUE BIT(5)
#define PORT_REG_PHYS_CTRL_LINK_FORCE BIT(4)
#define PORT_REG_PHYS_CTRL_DUPLEX_VALUE BIT(3)
#define PORT_REG_PHYS_CTRL_DUPLEX_FORCE BIT(2)
#define PORT_REG_PHYS_CTRL_SPD1000 BIT(1)
#define PORT_REG_PHYS_CTRL_SPD_MASK (BIT(1) | BIT(0))
#define PORT_REG_CTRL_PSTATE_SHIFT 0
#define PORT_REG_CTRL_PSTATE_WIDTH 2
@ -166,6 +174,14 @@
#error Define CONFIG_MV88E61XX_CPU_PORT to the port the CPU is attached to
#endif
/*
* These are ports without PHYs that may be wired directly
* to other serdes interfaces
*/
#ifndef CONFIG_MV88E61XX_FIXED_PORTS
#define CONFIG_MV88E61XX_FIXED_PORTS 0
#endif
/* ID register values for different switch models */
#define PORT_SWITCH_ID_6096 0x0980
#define PORT_SWITCH_ID_6097 0x0990
@ -793,6 +809,27 @@ static int mv88e61xx_phy_setup(struct phy_device *phydev, u8 phy)
return 0;
}
static int mv88e61xx_fixed_port_setup(struct phy_device *phydev, u8 port)
{
int val;
val = mv88e61xx_port_read(phydev, port, PORT_REG_PHYS_CTRL);
if (val < 0)
return val;
val &= ~(PORT_REG_PHYS_CTRL_SPD_MASK |
PORT_REG_PHYS_CTRL_FC_VALUE);
val |= PORT_REG_PHYS_CTRL_PCS_AN_EN |
PORT_REG_PHYS_CTRL_PCS_AN_RST |
PORT_REG_PHYS_CTRL_FC_FORCE |
PORT_REG_PHYS_CTRL_DUPLEX_VALUE |
PORT_REG_PHYS_CTRL_DUPLEX_FORCE |
PORT_REG_PHYS_CTRL_SPD1000;
return mv88e61xx_port_write(phydev, port, PORT_REG_PHYS_CTRL,
val);
}
static int mv88e61xx_phy_config_port(struct phy_device *phydev, u8 phy)
{
int val;
@ -911,6 +948,12 @@ static int mv88e61xx_phy_config(struct phy_device *phydev)
/* Return success if any PHY succeeds */
ret = 0;
} else if ((1 << i) & CONFIG_MV88E61XX_FIXED_PORTS) {
res = mv88e61xx_fixed_port_setup(phydev, i);
if (res < 0) {
printf("Error configuring port %i\n", i);
continue;
}
}
}