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mvsw61xx: enable SerDes on 6176 if required

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If the cpu port is connected through SGMII we need to enable SerDes for
it to work.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Acked-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Jonas Gorski 2016-09-24 21:00:14 +02:00
parent 92dcaecee3
commit 167763837b
2 changed files with 59 additions and 0 deletions
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46
target/linux/generic/files/drivers/net/phy/mvsw61xx.c
View file

@ -172,6 +172,27 @@ mvsw61xx_mdio_write(struct switch_dev *dev, int addr, int reg, u16 val)
MV_INDIRECT_INPROGRESS, 0) < 0;
}
static int
mvsw61xx_mdio_page_read(struct switch_dev *dev, int port, int page, int reg)
{
int ret;
mvsw61xx_mdio_write(dev, port, MII_MV_PAGE, page);
ret = mvsw61xx_mdio_read(dev, port, reg);
mvsw61xx_mdio_write(dev, port, MII_MV_PAGE, 0);
return ret;
}
static void
mvsw61xx_mdio_page_write(struct switch_dev *dev, int port, int page, int reg,
u16 val)
{
mvsw61xx_mdio_write(dev, port, MII_MV_PAGE, page);
mvsw61xx_mdio_write(dev, port, reg, val);
mvsw61xx_mdio_write(dev, port, MII_MV_PAGE, 0);
}
static int
mvsw61xx_get_port_mask(struct switch_dev *dev,
const struct switch_attr *attr, struct switch_val *val)
@ -591,6 +612,19 @@ static int mvsw61xx_apply(struct switch_dev *dev)
return mvsw61xx_update_state(dev);
}
static void mvsw61xx_enable_serdes(struct switch_dev *dev)
{
int bmcr = mvsw61xx_mdio_page_read(dev, MV_REG_FIBER_SERDES,
MV_PAGE_FIBER_SERDES, MII_BMCR);
if (bmcr < 0)
return;
if (bmcr & BMCR_PDOWN)
mvsw61xx_mdio_page_write(dev, MV_REG_FIBER_SERDES,
MV_PAGE_FIBER_SERDES, MII_BMCR,
bmcr & ~BMCR_PDOWN);
}
static int _mvsw61xx_reset(struct switch_dev *dev, bool full)
{
struct mvsw61xx_state *state = get_state(dev);
@ -635,6 +669,18 @@ static int _mvsw61xx_reset(struct switch_dev *dev, bool full)
BMCR_ANENABLE | BMCR_FULLDPLX |
BMCR_SPEED1000);
}
/* enable SerDes if necessary */
if (full && i >= 5 && state->model == MV_IDENT_VALUE_6176) {
u16 sts = sr16(dev, MV_PORTREG(STATUS, i));
u16 mode = sts & MV_PORT_STATUS_CMODE_MASK;
if (mode == MV_PORT_STATUS_CMODE_100BASE_X ||
mode == MV_PORT_STATUS_CMODE_1000BASE_X ||
mode == MV_PORT_STATUS_CMODE_SGMII) {
mvsw61xx_enable_serdes(dev);
}
}
}
for (i = 0; i < dev->vlans; i++) {

13
target/linux/generic/files/drivers/net/phy/mvsw61xx.h
View file

@ -48,6 +48,14 @@ enum {
MV_PORT_STATUS_LINK = (1 << 11),
};
enum {
MV_PORT_STATUS_CMODE_100BASE_X = 0x8,
MV_PORT_STATUS_CMODE_1000BASE_X = 0x9,
MV_PORT_STATUS_CMODE_SGMII = 0xa,
};
#define MV_PORT_STATUS_CMODE_MASK 0xf
enum {
MV_PORT_STATUS_SPEED_10 = 0x00,
MV_PORT_STATUS_SPEED_100 = 0x01,
@ -239,6 +247,11 @@ enum {
MV_SPEC_DOWNSHIFT_COUNTER = (0x3 << 12),
};
#define MII_MV_PAGE 22
#define MV_REG_FIBER_SERDES 0xf
#define MV_PAGE_FIBER_SERDES 0x1
struct mvsw61xx_state {
struct switch_dev dev;
struct mii_bus *bus;