[U-Boot] [PATCH v4 3/7] drivers: net: designware: Add reading of DT phy-handle node

[Janine Hagemann]

Add the ability to read the phy-handle node of the
gmac.  Upon reading this handle the phy-id
can be stored based on the reg node in the DT.

The phy-handle also needs to be stored and passed
to the phy to access any phy data that is available.

Signed-off-by: Janine Hagemann <j.hagemann at phytec.de>
Acked-by: Joe Hershberger <joe.hershberger at ni.com>
---
v4: Change used function from dev_set_of_offset( ) to
    offset_to_ofnode( )
---
 drivers/net/designware.c | 11 ++++++++++-
 drivers/net/designware.h |  1 +
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/net/designware.c b/drivers/net/designware.c
index 19db0a8..bba12f2 100644
--- a/drivers/net/designware.c
+++ b/drivers/net/designware.c
@@ -477,7 +477,7 @@ static int dw_phy_init(struct dw_eth_dev *priv, void *dev)
 {
 	struct phy_device *phydev;
 	int mask = 0xffffffff, ret;
-
+	struct dw_eth_pdata *dw_pdata = dev_get_platdata(dev);
 #ifdef CONFIG_PHY_ADDR
 	mask = 1 << CONFIG_PHY_ADDR;
 #endif
@@ -496,6 +496,11 @@ static int dw_phy_init(struct dw_eth_dev *priv, void *dev)
 	}
 	phydev->advertising = phydev->supported;
 
+#ifdef CONFIG_DM_ETH
+	if (dw_pdata->phy_of_handle)
+		phydev->node  = offset_to_ofnode(dw_pdata->phy_of_handle);
+#endif
+
 	priv->phydev = phydev;
 	phy_config(phydev);
 
@@ -803,6 +808,7 @@ int designware_eth_ofdata_to_platdata(struct udevice *dev)
 	int reset_flags = GPIOD_IS_OUT;
 #endif
 	int ret = 0;
+	int node = dev_of_offset(dev);
 
 	pdata->iobase = dev_read_addr(dev);
 	pdata->phy_interface = -1;
@@ -814,6 +820,9 @@ int designware_eth_ofdata_to_platdata(struct udevice *dev)
 		return -EINVAL;
 	}
 
+	dw_pdata->phy_of_handle = fdtdec_lookup_phandle(gd->fdt_blob, node,
+							 "phy-handle");
+
 	pdata->max_speed = dev_read_u32_default(dev, "max-speed", 0);
 
 #ifdef CONFIG_DM_GPIO
diff --git a/drivers/net/designware.h b/drivers/net/designware.h
index dea12b7..a6b0443 100644
--- a/drivers/net/designware.h
+++ b/drivers/net/designware.h
@@ -255,6 +255,7 @@ extern const struct eth_ops designware_eth_ops;
 struct dw_eth_pdata {
 	struct eth_pdata eth_pdata;
 	u32 reset_delays[3];
+	int phy_of_handle;
 };
 
 int designware_eth_init(struct dw_eth_dev *priv, u8 *enetaddr);
-- 
2.7.4