net: mvneta: add SFP TX disable handling

Add support for handling SFP TX disable for MVNETA in the same fashion as
to what MVPP2 is doing in order to enable using SFP-s.

This allows using ethernet on SFP only boards.

Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>

diff --git a/drivers/net/mvneta.c b/drivers/net/mvneta.c
index e2ac4d801dce59041d5834fa0f83de6bcdce8b56..15dc7140587354106dc4272febf9ba7682bfdca0 100644 (file)
--- a/drivers/net/mvneta.c
+++ b/drivers/net/mvneta.c
@@ -286,6 +286,7 @@ struct mvneta_port {
        struct phy_device *phydev;
 #if CONFIG_IS_ENABLED(DM_GPIO)
        struct gpio_desc phy_reset_gpio;
+       struct gpio_desc sfp_tx_disable_gpio;
 #endif
        struct mii_dev *bus;
 };
@@ -1693,6 +1694,9 @@ static int mvneta_probe(struct udevice *dev)
 {
        struct eth_pdata *pdata = dev_get_plat(dev);
        struct mvneta_port *pp = dev_get_priv(dev);
+#if CONFIG_IS_ENABLED(DM_GPIO)
+       struct ofnode_phandle_args sfp_args;
+#endif
        void *blob = (void *)gd->fdt_blob;
        int node = dev_of_offset(dev);
        struct mii_dev *bus;
@@ -1767,6 +1771,11 @@ static int mvneta_probe(struct udevice *dev)
                return ret;
 
 #if CONFIG_IS_ENABLED(DM_GPIO)
+       ret = dev_read_phandle_with_args(dev, "sfp", NULL, 0, 0, &sfp_args);
+       if (!ret && ofnode_is_enabled(sfp_args.node))
+               gpio_request_by_name_nodev(sfp_args.node, "tx-disable-gpio", 0,
+                                          &pp->sfp_tx_disable_gpio, GPIOD_IS_OUT);
+
        gpio_request_by_name(dev, "phy-reset-gpios", 0,
                             &pp->phy_reset_gpio, GPIOD_IS_OUT);
 
@@ -1775,6 +1784,9 @@ static int mvneta_probe(struct udevice *dev)
                mdelay(10);
                dm_gpio_set_value(&pp->phy_reset_gpio, 0);
        }
+
+       if (dm_gpio_is_valid(&pp->sfp_tx_disable_gpio))
+               dm_gpio_set_value(&pp->sfp_tx_disable_gpio, 0);
 #endif
 
        return board_network_enable(bus);