From 2b7beb9c0950ff032ab504a3adcabddae7bb9a01 Mon Sep 17 00:00:00 2001
From: Robert Marko <robert.marko@sartura.hr>
Date: Thu, 24 Mar 2022 10:57:37 +0100
Subject: [PATCH] net: mvneta: add SFP TX disable handling
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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>
---
drivers/net/mvneta.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/net/mvneta.c b/drivers/net/mvneta.c
index e2ac4d801d..15dc714058 100644
--- 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);
--
2.39.5