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author | Vladimir Oltean <vladimir.oltean@nxp.com> | 2021-12-05 01:00:34 +0200 |
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committer | Ramon Fried <ramon@neureality.ai> | 2022-01-15 18:49:03 +0200 |
commit | 0fa4448d5191f9397e5acbd6c83073523cc6c4bd (patch) | |
tree | 8ff9d3ea2e018783b35981a79d6c4cdcb1ca5fbd /net | |
parent | c2969792c46ce42a4429e41b4b81f42a5873ef07 (diff) | |
download | u-boot-0fa4448d5191f9397e5acbd6c83073523cc6c4bd.zip u-boot-0fa4448d5191f9397e5acbd6c83073523cc6c4bd.tar.gz u-boot-0fa4448d5191f9397e5acbd6c83073523cc6c4bd.tar.bz2 |
net: dsa: fix phydev->speed being uninitialized for the CPU port fixed PHY
If the DSA API is going to allow drivers to do things such as:
- phy_config in dsa_ops :: port_probe
- phy_startup in dsa_ops :: port_enable
then it would actually be good if the ->port_probe() method would
actually be called in all cases before the ->port_enable() is.
Currently this is true for user ports, but not true for the CPU port,
because the CPU port does not have a udevice registered for it (this is
all part of DSA's design). So the current issue is that after
phy_startup has finished for the CPU port, its phydev->speed is an
uninitialized value, because phy_config() was never called for the
priv->cpu_port_fixed_phy, and it is precisely phy_config() who copies
the speed into the phydev in the case of the fixed PHY driver.
So we need to simulate a probing event for the CPU port by manually
calling the driver's ->port_probe() method for the CPU port.
Fixes: 8a2982574854 ("net: dsa: introduce a .port_probe() method in struct dsa_ops")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Diffstat (limited to 'net')
-rw-r--r-- | net/dsa-uclass.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/net/dsa-uclass.c b/net/dsa-uclass.c index 606b153..9ff55a0 100644 --- a/net/dsa-uclass.c +++ b/net/dsa-uclass.c @@ -466,6 +466,8 @@ static int dsa_pre_probe(struct udevice *dev) { struct dsa_pdata *pdata = dev_get_uclass_plat(dev); struct dsa_priv *priv = dev_get_uclass_priv(dev); + struct dsa_ops *ops = dsa_get_ops(dev); + int err; priv->num_ports = pdata->num_ports; priv->cpu_port = pdata->cpu_port; @@ -477,6 +479,15 @@ static int dsa_pre_probe(struct udevice *dev) uclass_find_device_by_ofnode(UCLASS_ETH, pdata->master_node, &priv->master_dev); + + /* Simulate a probing event for the CPU port */ + if (ops->port_probe) { + err = ops->port_probe(dev, priv->cpu_port, + priv->cpu_port_fixed_phy); + if (err) + return err; + } + return 0; } |