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mv88e6xxx: Add SERDES Support for mv88e6321

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Add serdes and pcs_ops functions for mv88e6321. In mv88e6321
2 ports support serdes functionality; port 0 and port 1. These ports are
serdes-only ports.

Changes:

1. Add a function support to return the lane address for the port based on
cmode.
2. Reuse mv88e6352's serdes_get_regs* and pcs_init functions for mv88e6321.

Tested on mv88e6321 switch port 0.

Co-developed-by: Thomas Eckerman <thomas.eckerman.ext@ericsson.com>
Signed-off-by: Thomas Eckerman <thomas.eckerman.ext@ericsson.com>
Signed-off-by: Fidan Aliyeva <fidan.aliyeva.ext@ericsson.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20260528210310.1365858-4-fidan.aliyeva.ext@ericsson.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Fidan Aliyeva 2026-05-28 23:03:10 +02:00 committed by Jakub Kicinski
parent 348a46c93e
commit f456c9b936
3 changed files with 25 additions and 0 deletions
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4
drivers/net/dsa/mv88e6xxx/chip.c
View File

@ -5272,10 +5272,14 @@ static const struct mv88e6xxx_ops mv88e6321_ops = {
.vtu_loadpurge = mv88e6352_g1_vtu_loadpurge,
.stu_getnext = mv88e6352_g1_stu_getnext,
.stu_loadpurge = mv88e6352_g1_stu_loadpurge,
.serdes_get_lane = mv88e6321_serdes_get_lane,
.serdes_get_regs_len = mv88e6352_serdes_get_regs_len,
.serdes_get_regs = mv88e6352_serdes_get_regs,
.gpio_ops = &mv88e6352_gpio_ops,
.avb_ops = &mv88e6352_avb_ops,
.ptp_ops = &mv88e6352_ptp_ops,
.phylink_get_caps = mv88e632x_phylink_get_caps,
.pcs_ops = &mv88e6352_pcs_ops,
};
static const struct mv88e6xxx_ops mv88e6341_ops = {

18
drivers/net/dsa/mv88e6xxx/serdes.c
View File

@ -241,6 +241,24 @@ void mv88e6352_serdes_get_regs(struct mv88e6xxx_chip *chip, int port, void *_p)
}
}
int mv88e6321_serdes_get_lane(struct mv88e6xxx_chip *chip, int port)
{
int lane = -ENODEV;
u8 cmode;
if (port != 0 && port != 1)
return lane;
cmode = chip->ports[port].cmode;
if (cmode == MV88E6XXX_PORT_STS_CMODE_100BASEX ||
cmode == MV88E6XXX_PORT_STS_CMODE_1000BASEX ||
cmode == MV88E6XXX_PORT_STS_CMODE_SGMII)
lane = port + MV88E6321_PORT0_LANE;
return lane;
}
int mv88e6341_serdes_get_lane(struct mv88e6xxx_chip *chip, int port)
{
u8 cmode = chip->ports[port].cmode;

3
drivers/net/dsa/mv88e6xxx/serdes.h
View File

@ -14,6 +14,8 @@
struct phylink_link_state;
#define MV88E6321_PORT0_LANE 0x0c
#define MV88E6352_ADDR_SERDES 0x0f
#define MV88E6352_SERDES_PAGE_FIBER 0x01
#define MV88E6352_SERDES_IRQ 0x0b
@ -114,6 +116,7 @@ struct phylink_link_state;
int mv88e6xxx_pcs_decode_state(struct device *dev, u16 bmsr, u16 lpa,
u16 status, struct phylink_link_state *state);
int mv88e6321_serdes_get_lane(struct mv88e6xxx_chip *chip, int port);
int mv88e6341_serdes_get_lane(struct mv88e6xxx_chip *chip, int port);
int mv88e6352_serdes_get_lane(struct mv88e6xxx_chip *chip, int port);
int mv88e6390_serdes_get_lane(struct mv88e6xxx_chip *chip, int port);