diff options
Diffstat (limited to 'drivers/net/dsa/sja1105/sja1105_main.c')
| -rw-r--r-- | drivers/net/dsa/sja1105/sja1105_main.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c index ec8137eff223..d27b9c178cba 100644 --- a/drivers/net/dsa/sja1105/sja1105_main.c +++ b/drivers/net/dsa/sja1105/sja1105_main.c @@ -518,6 +518,30 @@ static int sja1105_static_config_load(struct sja1105_private *priv, return sja1105_static_config_upload(priv); } +static int sja1105_parse_rgmii_delays(struct sja1105_private *priv, + const struct sja1105_dt_port *ports) +{ + int i; + + for (i = 0; i < SJA1105_NUM_PORTS; i++) { + if (ports->role == XMII_MAC) + continue; + + if (ports->phy_mode == PHY_INTERFACE_MODE_RGMII_RXID || + ports->phy_mode == PHY_INTERFACE_MODE_RGMII_ID) + priv->rgmii_rx_delay[i] = true; + + if (ports->phy_mode == PHY_INTERFACE_MODE_RGMII_TXID || + ports->phy_mode == PHY_INTERFACE_MODE_RGMII_ID) + priv->rgmii_tx_delay[i] = true; + + if ((priv->rgmii_rx_delay[i] || priv->rgmii_tx_delay[i]) && + !priv->info->setup_rgmii_delay) + return -EINVAL; + } + return 0; +} + static int sja1105_parse_ports_node(struct sja1105_private *priv, struct sja1105_dt_port *ports, struct device_node *ports_node) @@ -959,6 +983,16 @@ static int sja1105_setup(struct dsa_switch *ds) dev_err(ds->dev, "Failed to parse DT: %d\n", rc); return rc; } + + /* Error out early if internal delays are required through DT + * and we can't apply them. + */ + rc = sja1105_parse_rgmii_delays(priv, ports); + if (rc < 0) { + dev_err(ds->dev, "RGMII delay not supported\n"); + return rc; + } + /* Create and send configuration down to device */ rc = sja1105_static_config_load(priv, ports); if (rc < 0) { |