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authorJonas Gorski <jonas.gorski@gmail.com>2016-09-24 21:00:14 +0200
committerJonas Gorski <jonas.gorski@gmail.com>2016-09-26 13:04:04 +0200
commit167763837bc4df4d6561e3d1cda86978f0882fc7 (patch)
treed0c396b54464cbdbc522d2f3db2c417f01d439d7
parent92dcaecee3ee1d05aa2c174fe7b159fcb4d97726 (diff)
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mvsw61xx: enable SerDes on 6176 if required
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>
-rw-r--r--target/linux/generic/files/drivers/net/phy/mvsw61xx.c46
-rw-r--r--target/linux/generic/files/drivers/net/phy/mvsw61xx.h13
2 files changed, 59 insertions, 0 deletions
diff --git a/target/linux/generic/files/drivers/net/phy/mvsw61xx.c b/target/linux/generic/files/drivers/net/phy/mvsw61xx.c
index e6074e35f3..6bd112b00d 100644
--- a/target/linux/generic/files/drivers/net/phy/mvsw61xx.c
+++ b/target/linux/generic/files/drivers/net/phy/mvsw61xx.c
@@ -173,6 +173,27 @@ mvsw61xx_mdio_write(struct switch_dev *dev, int addr, int reg, u16 val)
}
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++) {
diff --git a/target/linux/generic/files/drivers/net/phy/mvsw61xx.h b/target/linux/generic/files/drivers/net/phy/mvsw61xx.h
index 64db6d3aab..1c45189689 100644
--- a/target/linux/generic/files/drivers/net/phy/mvsw61xx.h
+++ b/target/linux/generic/files/drivers/net/phy/mvsw61xx.h
@@ -49,6 +49,14 @@ enum {
};
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,
MV_PORT_STATUS_SPEED_1000 = 0x02,
@@ -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;