diff options
| author | Florian Fainelli <florian.fainelli@broadcom.com> | 2024-04-23 21:33:34 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-04-25 21:46:37 +0300 |
| commit | 0d18dea4cde6d924ce830ab11780cb8500538227 (patch) | |
| tree | 45c62b42e163f94e468c9856115bc6310a88f657 /drivers | |
| parent | b3d06dc3707f6d0b90ebc9841c7df039adcac7fc (diff) | |
| download | linux-0d18dea4cde6d924ce830ab11780cb8500538227.tar.xz | |
net: dsa: b53: Introduce b53_adjust_5325_mii()
Takes care of doing the 5325 switch series specific MII programming and
is called from b53_adjust_link() to allow the future removal of
b53_adjust_link().
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/20240423183339.1368511-4-florian.fainelli@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/dsa/b53/b53_common.c | 44 |
1 files changed, 25 insertions, 19 deletions
diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c index 744567c465f7..a127a17be11c 100644 --- a/drivers/net/dsa/b53/b53_common.c +++ b/drivers/net/dsa/b53/b53_common.c @@ -1309,6 +1309,29 @@ static void b53_adjust_531x5_rgmii(struct dsa_switch *ds, int port, phy_modes(interface)); } +static void b53_adjust_5325_mii(struct dsa_switch *ds, int port) +{ + struct b53_device *dev = ds->priv; + u8 reg = 0; + + b53_read8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL, + ®); + + /* reverse mii needs to be enabled */ + if (!(reg & PORT_OVERRIDE_RV_MII_25)) { + b53_write8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL, + reg | PORT_OVERRIDE_RV_MII_25); + b53_read8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL, + ®); + + if (!(reg & PORT_OVERRIDE_RV_MII_25)) { + dev_err(ds->dev, + "Failed to enable reverse MII mode\n"); + return; + } + } +} + static void b53_adjust_link(struct dsa_switch *ds, int port, struct phy_device *phydev) { @@ -1316,7 +1339,6 @@ static void b53_adjust_link(struct dsa_switch *ds, int port, struct ethtool_keee *p = &dev->ports[port].eee; bool tx_pause = false; bool rx_pause = false; - u8 reg = 0; if (!phy_is_pseudo_fixed_link(phydev)) return; @@ -1342,24 +1364,8 @@ static void b53_adjust_link(struct dsa_switch *ds, int port, b53_adjust_531x5_rgmii(ds, port, phydev->interface); /* configure MII port if necessary */ - if (is5325(dev)) { - b53_read8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL, - ®); - - /* reverse mii needs to be enabled */ - if (!(reg & PORT_OVERRIDE_RV_MII_25)) { - b53_write8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL, - reg | PORT_OVERRIDE_RV_MII_25); - b53_read8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL, - ®); - - if (!(reg & PORT_OVERRIDE_RV_MII_25)) { - dev_err(ds->dev, - "Failed to enable reverse MII mode\n"); - return; - } - } - } + if (is5325(dev)) + b53_adjust_5325_mii(ds, port); /* Re-negotiate EEE if it was enabled already */ p->eee_enabled = b53_eee_init(ds, port, phydev); |