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net: dsa: b53: fix bcm63xx RGMII port link adjustment

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BCM63XX's switch does not support MDIO scanning of external phys, so its
MACs needs to be manually configured for autonegotiated link speeds.

So b53_force_port_config() and b53_force_link() accordingly also when
mode is MLO_AN_PHY for those ports.

Fixes lower speeds than 1000/full on rgmii ports 4 - 7.

This aligns the behaviour with the old bcm63xx_enetsw driver for those
ports.

Fixes: 967dd82ffc ("net: dsa: b53: Add support for Broadcom RoboSwitch")
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20251101132807.50419-3-jonas.gorski@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jonas Gorski
2025-11-01 14:28:07 +01:00
committed by Jakub Kicinski
parent b6a8a5477f
commit 3e4ebdc160
1 changed files with 11 additions and 1 deletions
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12
drivers/net/dsa/b53/b53_common.c
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@@ -1602,8 +1602,11 @@ static void b53_phylink_mac_link_down(struct phylink_config *config,
struct b53_device *dev = dp->ds->priv;
int port = dp->index;
if (mode == MLO_AN_PHY)
if (mode == MLO_AN_PHY) {
if (is63xx(dev) && in_range(port, B53_63XX_RGMII0, 4))
b53_force_link(dev, port, false);
return;
}
if (mode == MLO_AN_FIXED) {
b53_force_link(dev, port, false);
@@ -1631,6 +1634,13 @@ static void b53_phylink_mac_link_up(struct phylink_config *config,
if (mode == MLO_AN_PHY) {
/* Re-negotiate EEE if it was enabled already */
p->eee_enabled = b53_eee_init(ds, port, phydev);
if (is63xx(dev) && in_range(port, B53_63XX_RGMII0, 4)) {
b53_force_port_config(dev, port, speed, duplex,
tx_pause, rx_pause);
b53_force_link(dev, port, true);
}
return;
}