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net: dsa: b53: add support for BCM63xx RGMIIs

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BCM63xx RGMII ports require additional configuration in order to work.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20230319220805.124024-1-noltari@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Álvaro Fernández Rojas 2023-03-19 23:08:05 +01:00 • committed by Paolo Abeni
parent 9ef70d0130
commit ce3bf94871
2 changed files with 47 additions and 0 deletions
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46
drivers/net/dsa/b53/b53_common.c
View file

@ -1209,6 +1209,46 @@ static void b53_force_port_config(struct b53_device *dev, int port,
b53_write8(dev, B53_CTRL_PAGE, off, reg);
}
static void b53_adjust_63xx_rgmii(struct dsa_switch *ds, int port,
phy_interface_t interface)
{
struct b53_device *dev = ds->priv;
u8 rgmii_ctrl = 0, off;
if (port == dev->imp_port)
off = B53_RGMII_CTRL_IMP;
else
off = B53_RGMII_CTRL_P(port);
b53_read8(dev, B53_CTRL_PAGE, off, &rgmii_ctrl);
switch (interface) {
case PHY_INTERFACE_MODE_RGMII_ID:
rgmii_ctrl |= (RGMII_CTRL_DLL_RXC | RGMII_CTRL_DLL_TXC);
break;
case PHY_INTERFACE_MODE_RGMII_RXID:
rgmii_ctrl &= ~(RGMII_CTRL_DLL_TXC);
rgmii_ctrl |= RGMII_CTRL_DLL_RXC;
break;
case PHY_INTERFACE_MODE_RGMII_TXID:
rgmii_ctrl &= ~(RGMII_CTRL_DLL_RXC);
rgmii_ctrl |= RGMII_CTRL_DLL_TXC;
break;
case PHY_INTERFACE_MODE_RGMII:
default:
rgmii_ctrl &= ~(RGMII_CTRL_DLL_RXC | RGMII_CTRL_DLL_TXC);
break;
}
if (port != dev->imp_port)
rgmii_ctrl |= RGMII_CTRL_ENABLE_GMII;
b53_write8(dev, B53_CTRL_PAGE, off, rgmii_ctrl);
dev_dbg(ds->dev, "Configured port %d for %s\n", port,
phy_modes(interface));
}
static void b53_adjust_link(struct dsa_switch *ds, int port,
struct phy_device *phydev)
{
@ -1235,6 +1275,9 @@ static void b53_adjust_link(struct dsa_switch *ds, int port,
tx_pause, rx_pause);
b53_force_link(dev, port, phydev->link);
if (is63xx(dev) && port >= B53_63XX_RGMII0)
b53_adjust_63xx_rgmii(ds, port, phydev->interface);
if (is531x5(dev) && phy_interface_is_rgmii(phydev)) {
if (port == dev->imp_port)
off = B53_RGMII_CTRL_IMP;
@ -1402,6 +1445,9 @@ void b53_phylink_mac_link_up(struct dsa_switch *ds, int port,
{
struct b53_device *dev = ds->priv;
if (is63xx(dev) && port >= B53_63XX_RGMII0)
b53_adjust_63xx_rgmii(ds, port, interface);
if (mode == MLO_AN_PHY)
return;

1
drivers/net/dsa/b53/b53_priv.h
View file

@ -211,6 +211,7 @@ static inline int is58xx(struct b53_device *dev)
dev->chip_id == BCM7278_DEVICE_ID;
}
#define B53_63XX_RGMII0 4
#define B53_CPU_PORT_25 5
#define B53_CPU_PORT 8