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Commit 1f71e8c9 authored by Markus Brunner's avatar Markus Brunner Committed by David S. Miller
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drivers: net: cpsw: Add support for fixed-link PHY 



Add support for a fixed-link devicetree sub-node in case the the
cpsw MAC is directly connected to a non-mdio PHY/device.

Signed-off-by: default avatarMarkus Brunner <systemprogrammierung.brunner@gmail.com>
Acked-by: default avatarMugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d9c7dbc1

Documentation/devicetree/bindings/net/cpsw.txt

+5 −0
Original line number Diff line number Diff line
@@ -48,6 +48,11 @@ Optional properties: 
- mac-address		: See ethernet.txt file in the same directory

- phy-handle		: See ethernet.txt file in the same directory



Slave sub-nodes:

- fixed-link		: See fixed-link.txt file in the same directory

			  Either the properties phy_id and phy-mode,

			  or the sub-node fixed-link can be specified



Note: "ti,hwmods" field is used to fetch the base address and irq

resources from TI, omap hwmod data base during device registration.

Future plan is to migrate hwmod data base contents into device tree

drivers/net/ethernet/ti/cpsw.c

+13 −0
Original line number Diff line number Diff line
@@ -2037,6 +2037,19 @@ static int cpsw_probe_dt(struct cpsw_priv *priv, 
			continue;



		priv->phy_node = of_parse_phandle(slave_node, "phy-handle", 0);

		if (of_phy_is_fixed_link(slave_node)) {

			struct phy_device *pd;



			ret = of_phy_register_fixed_link(slave_node);

			if (ret)

				return ret;

			pd = of_phy_find_device(slave_node);

			if (!pd)

				return -ENODEV;

			snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),

				 PHY_ID_FMT, pd->bus->id, pd->phy_id);

			goto no_phy_slave;

		}

		parp = of_get_property(slave_node, "phy_id", &lenp);

		if ((parp == NULL) || (lenp != (sizeof(void *) * 2))) {

			dev_err(&pdev->dev, "Missing slave[%d] phy_id property\n", i);