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| author | Murali Krishna Policharla <murali.policharla@broadcom.com> | 2020-03-27 20:55:40 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-03-28 00:07:24 +0100 |
| commit | ab41ca3455a208392ce95f4086d5708dc37bff86 (patch) | |
| tree | c784a5ae81ff8d6a7d1d2f20864a2aa6ea10d912 /drivers/net/phy/bcm-phy-lib.c | |
| parent | Merge tag 'wireless-drivers-next-2020-03-27' of git://git.kernel.org/pub/scm/... (diff) | |
| download | linux-ab41ca3455a208392ce95f4086d5708dc37bff86.tar.xz linux-ab41ca3455a208392ce95f4086d5708dc37bff86.zip | |
net: phy: bcm7xx: add jumbo frame configuration to PHY
The BCM7XX PHY family requires special configuration to pass jumbo
frames. Do that during initial PHY setup.
Signed-off-by: Murali Krishna Policharla <murali.policharla@broadcom.com>
Reviewed-by: Scott Branden <scott.branden@broadcom.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy/bcm-phy-lib.c')
| -rw-r--r-- | drivers/net/phy/bcm-phy-lib.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/net/phy/bcm-phy-lib.c b/drivers/net/phy/bcm-phy-lib.c index e0d3310957ff..e77b274a09fd 100644 --- a/drivers/net/phy/bcm-phy-lib.c +++ b/drivers/net/phy/bcm-phy-lib.c @@ -423,6 +423,28 @@ int bcm_phy_28nm_a0b0_afe_config_init(struct phy_device *phydev) } EXPORT_SYMBOL_GPL(bcm_phy_28nm_a0b0_afe_config_init); +int bcm_phy_enable_jumbo(struct phy_device *phydev) +{ + int ret; + + ret = bcm54xx_auxctl_read(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL); + if (ret < 0) + return ret; + + /* Enable extended length packet reception */ + ret = bcm54xx_auxctl_write(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL, + ret | MII_BCM54XX_AUXCTL_ACTL_EXT_PKT_LEN); + if (ret < 0) + return ret; + + /* Enable the elastic FIFO for raising the transmission limit from + * 4.5KB to 10KB, at the expense of an additional 16 ns in propagation + * latency. + */ + return phy_set_bits(phydev, MII_BCM54XX_ECR, MII_BCM54XX_ECR_FIFOE); +} +EXPORT_SYMBOL_GPL(bcm_phy_enable_jumbo); + MODULE_DESCRIPTION("Broadcom PHY Library"); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Broadcom Corporation"); |