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drivers: net: cpsw: Add support for fixed-link PHY

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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: Markus Brunner <systemprogrammierung.brunner@gmail.com>
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Markus Brunner 2015-11-03 22:09:51 +01:00 committed by David S. Miller
parent d9c7dbc11a
commit 1f71e8c96f
2 changed files with 18 additions and 0 deletions
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5
Documentation/devicetree/bindings/net/cpsw.txt
View file

@ -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

13
drivers/net/ethernet/ti/cpsw.c
View file

@ -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);