[PATCH net 3/3] net: dsa: b53: allow RGMII for bcm63xx RGMII ports

Jonas Gorski
2025-05-19T17:46:23Z

Add RGMII to supported interfaces for BCM63xx RGMII ports so they can be
actually used in RGMII mode.

Without this, phylink will fail to configure them:

[ 3.580000] b53-switch 10700000.switch GbE3 (uninitialized): validation of rgmii with support 0000000,00000000,00000000,000062ff and advertisement 0000000,00000000,00000000,000062ff failed: -EINVAL
[ 3.600000] b53-switch 10700000.switch GbE3 (uninitialized): failed to connect to PHY: -EINVAL
[ 3.610000] b53-switch 10700000.switch GbE3 (uninitialized): error -22 setting up PHY for tree 0, switch 0, port 4

Fixes: ce3bf94871f7 ("net: dsa: b53: add support for BCM63xx RGMIIs")
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
---
drivers/net/dsa/b53/b53_common.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index b00975189dab..9d97ad146ce4 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1458,6 +1458,10 @@ static void b53_phylink_get_caps(struct dsa_switch *ds, int port,
__set_bit(PHY_INTERFACE_MODE_MII, config->supported_interfaces);
__set_bit(PHY_INTERFACE_MODE_REVMII, config->supported_interfaces);

+ /* BCM63xx RGMII ports support RGMII */
+ if (is63xx(dev) && port >= B53_63XX_RGMII0)
+ phy_interface_set_rgmii(config->supported_interfaces);
+
config->mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
MAC_10 | MAC_100;

--
2.43.0