Commit 83dc4c2a authored by Russell King (Oracle)'s avatar Russell King (Oracle) Committed by David S. Miller

net: dsa: sja1105: support switching between SGMII and 2500BASE-X

Vladimir Oltean suggests that sja1105 can support switching between
SGMII and 2500BASE-X modes. Augment sja1105_phylink_get_caps() to
fill in both interface modes if they can be supported.
Signed-off-by: default avatarRussell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 9c318be1
......@@ -1396,6 +1396,7 @@ static void sja1105_phylink_get_caps(struct dsa_switch *ds, int port,
{
struct sja1105_private *priv = ds->priv;
struct sja1105_xmii_params_entry *mii;
phy_interface_t phy_mode;
/* This driver does not make use of the speed, duplex, pause or the
* advertisement in its mac_config, so it is safe to mark this driver
......@@ -1403,11 +1404,27 @@ static void sja1105_phylink_get_caps(struct dsa_switch *ds, int port,
*/
config->legacy_pre_march2020 = false;
/* The SJA1105 MAC programming model is through the static config
* (the xMII Mode table cannot be dynamically reconfigured), and
* we have to program that early.
phy_mode = priv->phy_mode[port];
if (phy_mode == PHY_INTERFACE_MODE_SGMII ||
phy_mode == PHY_INTERFACE_MODE_2500BASEX) {
/* Changing the PHY mode on SERDES ports is possible and makes
* sense, because that is done through the XPCS. We allow
* changes between SGMII and 2500base-X.
*/
if (priv->info->supports_sgmii[port])
__set_bit(PHY_INTERFACE_MODE_SGMII,
config->supported_interfaces);
if (priv->info->supports_2500basex[port])
__set_bit(PHY_INTERFACE_MODE_2500BASEX,
config->supported_interfaces);
} else {
/* The SJA1105 MAC programming model is through the static
* config (the xMII Mode table cannot be dynamically
* reconfigured), and we have to program that early.
*/
__set_bit(priv->phy_mode[port], config->supported_interfaces);
__set_bit(phy_mode, config->supported_interfaces);
}
/* The MAC does not support pause frames, and also doesn't
* support half-duplex traffic modes.
......
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