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net/ftgmac100: Add NC-SI mode support

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Update the ftgmac100 driver to support NC-SI instead of an mdio phy
where available. This is a common setup for Aspeed AST2x00 platforms.

NC-SI mode is determined from the device-tree if either phy-mode sets it
or the use-ncsi property exists. If set then normal mdio setup is
skipped in favour of the NC-SI phy.

Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
This commit is contained in:
Samuel Mendoza-Jonas 2022-08-08 21:46:05 +09:30 committed by Tom Rini
parent 4b290d4a75
commit 3b400e84ba
1 changed files with 10 additions and 4 deletions
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14
drivers/net/ftgmac100.c
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@ -188,7 +188,7 @@ static int ftgmac100_phy_adjust_link(struct ftgmac100_data *priv)
struct phy_device *phydev = priv->phydev;
u32 maccr;
if (!phydev->link) {
if (!phydev->link && priv->phy_mode != PHY_INTERFACE_MODE_NCSI) {
dev_err(phydev->dev, "No link\n");
return -EREMOTEIO;
}
@ -228,7 +228,8 @@ static int ftgmac100_phy_init(struct udevice *dev)
if (!phydev)
return -ENODEV;
phydev->supported &= PHY_GBIT_FEATURES;
if (priv->phy_mode != PHY_INTERFACE_MODE_NCSI)
phydev->supported &= PHY_GBIT_FEATURES;
if (priv->max_speed) {
ret = phy_set_supported(phydev, priv->max_speed);
if (ret)
@ -308,7 +309,8 @@ static void ftgmac100_stop(struct udevice *dev)
writel(0, &ftgmac100->maccr);
phy_shutdown(priv->phydev);
if (priv->phy_mode != PHY_INTERFACE_MODE_NCSI)
phy_shutdown(priv->phydev);
}
static int ftgmac100_start(struct udevice *dev)
@ -580,6 +582,9 @@ static int ftgmac100_probe(struct udevice *dev)
priv->max_speed = pdata->max_speed;
priv->phy_addr = 0;
if (dev_read_bool(dev, "use-ncsi"))
priv->phy_mode = PHY_INTERFACE_MODE_NCSI;
#ifdef CONFIG_PHY_ADDR
priv->phy_addr = CONFIG_PHY_ADDR;
#endif
@ -592,7 +597,8 @@ static int ftgmac100_probe(struct udevice *dev)
* If DM MDIO is enabled, the MDIO bus will be initialized later in
* dm_eth_phy_connect
*/
if (!IS_ENABLED(CONFIG_DM_MDIO)) {
if (priv->phy_mode != PHY_INTERFACE_MODE_NCSI &&
!IS_ENABLED(CONFIG_DM_MDIO)) {
ret = ftgmac100_mdio_init(dev);
if (ret) {
dev_err(dev, "Failed to initialize mdiobus: %d\n", ret);