[U-Boot] [PATCH v6 1/7] drivers: net: cpsw: Add reading of DT phy-handle node

[Dan Murphy]

Add the ability to read the phy-handle node of the
cpsw slave.  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: Dan Murphy <dmurphy at ti.com>
---

v6 - Fix build error when DM_ETH is not defined and updated phy_handle error handling - https://patchwork.ozlabs.org/patch/608763/

 drivers/net/cpsw.c | 20 ++++++++++++++++++--
 include/cpsw.h     |  1 +
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/drivers/net/cpsw.c b/drivers/net/cpsw.c
index 7104754..3d6f0ce 100644
--- a/drivers/net/cpsw.c
+++ b/drivers/net/cpsw.c
@@ -965,6 +965,11 @@ static int cpsw_phy_init(struct cpsw_priv *priv, struct cpsw_slave *slave)
 	phydev->supported &= supported;
 	phydev->advertising = phydev->supported;
 
+#ifdef CONFIG_DM_ETH
+	if (slave->data->phy_of_handle)
+		phydev->dev->of_offset = slave->data->phy_of_handle;
+#endif
+
 	priv->phydev = phydev;
 	phy_config(phydev);
 
@@ -1217,8 +1222,19 @@ static int cpsw_eth_ofdata_to_platdata(struct udevice *dev)
 			if (phy_mode)
 				priv->data.slave_data[slave_index].phy_if =
 					phy_get_interface_by_name(phy_mode);
-			fdtdec_get_int_array(fdt, subnode, "phy_id", phy_id, 2);
-			priv->data.slave_data[slave_index].phy_addr = phy_id[1];
+
+			priv->data.slave_data[slave_index].phy_of_handle =
+				fdtdec_lookup_phandle(fdt, subnode, "phy-handle");
+
+			if (priv->data.slave_data[slave_index].phy_of_handle >= 0) {
+				priv->data.slave_data[slave_index].phy_addr =
+					fdtdec_get_int(gd->fdt_blob,
+						priv->data.slave_data[slave_index].phy_of_handle,
+						"reg", -1);
+			} else {
+				fdtdec_get_int_array(fdt, subnode, "phy_id", phy_id, 2);
+				priv->data.slave_data[slave_index].phy_addr = phy_id[1];
+			}
 			slave_index++;
 		}
 
diff --git a/include/cpsw.h b/include/cpsw.h
index cf1d30b..ff95cd8 100644
--- a/include/cpsw.h
+++ b/include/cpsw.h
@@ -21,6 +21,7 @@ struct cpsw_slave_data {
 	u32		sliver_reg_ofs;
 	int		phy_addr;
 	int		phy_if;
+	int		phy_of_handle;
 };
 
 enum {
-- 
2.8.1.116.g7b0d47b