diff options
| author | Robert Marko <robimarko@gmail.com> | 2024-02-27 18:54:22 +0100 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2024-02-29 10:16:39 +0100 |
| commit | e3ab3267a0bbedc37725bb845a332ec33b247263 (patch) | |
| tree | 545afb0cdb56e75cdf187035c125467b230094c7 /drivers/net/dsa/mv88e6xxx | |
| parent | 5c5b0c444be3e851046f1c1074459b8d15d2a0f9 (diff) | |
net: dsa: mv88e6xxx: add Amethyst specific SMI GPIO function
The existing mv88e6390_g2_scratch_gpio_set_smi() cannot be used on the
88E6393X as it requires certain P0_MODE, it also checks the CPU mode
as it impacts the bit setting value.
This is all irrelevant for Amethyst (MV88E6191X/6193X/6393X) as only
the default value of the SMI_PHY Config bit is set to CPU_MGD bootstrap
pin value but it can be changed without restrictions so that GPIO pins
9 and 10 are used as SMI pins.
So, introduce Amethyst specific function and call that if the Amethyst
family wants to setup the external PHY.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Robert Marko <robimarko@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers/net/dsa/mv88e6xxx')
| -rw-r--r-- | drivers/net/dsa/mv88e6xxx/chip.c | 5 | ||||
| -rw-r--r-- | drivers/net/dsa/mv88e6xxx/global2.h | 2 | ||||
| -rw-r--r-- | drivers/net/dsa/mv88e6xxx/global2_scratch.c | 31 |
3 files changed, 37 insertions, 1 deletions
diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c index f9378fca8305..9ed1821184ec 100644 --- a/drivers/net/dsa/mv88e6xxx/chip.c +++ b/drivers/net/dsa/mv88e6xxx/chip.c @@ -3712,7 +3712,10 @@ static int mv88e6xxx_mdio_register(struct mv88e6xxx_chip *chip, if (external) { mv88e6xxx_reg_lock(chip); - err = mv88e6390_g2_scratch_gpio_set_smi(chip, true); + if (chip->info->family == MV88E6XXX_FAMILY_6393) + err = mv88e6393x_g2_scratch_gpio_set_smi(chip, true); + else + err = mv88e6390_g2_scratch_gpio_set_smi(chip, true); mv88e6xxx_reg_unlock(chip); if (err) diff --git a/drivers/net/dsa/mv88e6xxx/global2.h b/drivers/net/dsa/mv88e6xxx/global2.h index 20fefa08f54e..82f9b410de0b 100644 --- a/drivers/net/dsa/mv88e6xxx/global2.h +++ b/drivers/net/dsa/mv88e6xxx/global2.h @@ -380,6 +380,8 @@ extern const struct mv88e6xxx_gpio_ops mv88e6352_gpio_ops; int mv88e6390_g2_scratch_gpio_set_smi(struct mv88e6xxx_chip *chip, bool external); +int mv88e6393x_g2_scratch_gpio_set_smi(struct mv88e6xxx_chip *chip, + bool external); int mv88e6352_g2_scratch_port_has_serdes(struct mv88e6xxx_chip *chip, int port); int mv88e6xxx_g2_atu_stats_set(struct mv88e6xxx_chip *chip, u16 kind, u16 bin); int mv88e6xxx_g2_atu_stats_get(struct mv88e6xxx_chip *chip, u16 *stats); diff --git a/drivers/net/dsa/mv88e6xxx/global2_scratch.c b/drivers/net/dsa/mv88e6xxx/global2_scratch.c index 0e15efd898f2..61ab6cc4fbfc 100644 --- a/drivers/net/dsa/mv88e6xxx/global2_scratch.c +++ b/drivers/net/dsa/mv88e6xxx/global2_scratch.c @@ -291,6 +291,37 @@ int mv88e6390_g2_scratch_gpio_set_smi(struct mv88e6xxx_chip *chip, } /** + * mv88e6393x_g2_scratch_gpio_set_smi - set gpio muxing for external smi + * @chip: chip private data + * @external: set mux for external smi, or free for gpio usage + * + * MV88E6191X/6193X/6393X GPIO pins 9 and 10 can be configured as an + * external SMI interface or as regular GPIO-s. + * + * They however have a different register layout then the existing + * function. + */ + +int mv88e6393x_g2_scratch_gpio_set_smi(struct mv88e6xxx_chip *chip, + bool external) +{ + int misc_cfg = MV88E6352_G2_SCRATCH_MISC_CFG; + int err; + u8 val; + + err = mv88e6xxx_g2_scratch_read(chip, misc_cfg, &val); + if (err) + return err; + + if (external) + val &= ~MV88E6352_G2_SCRATCH_MISC_CFG_NORMALSMI; + else + val |= MV88E6352_G2_SCRATCH_MISC_CFG_NORMALSMI; + + return mv88e6xxx_g2_scratch_write(chip, misc_cfg, val); +} + +/** * mv88e6352_g2_scratch_port_has_serdes - indicate if a port can have a serdes * @chip: chip private data * @port: port number to check for serdes |