Re: [PATCH v7 03/14] net: phy: at803x: add QCA8084 ethernet phy support

Add qca8084 PHY support, which is four-port PHY with maximum
link capability 2.5G, the features of each port is almost same
as QCA8081 and slave seed config is not needed.

Three kind of interface modes supported by qca8084.
PHY_INTERFACE_MODE_10G_QXGMII, PHY_INTERFACE_MODE_2500BASEX and
PHY_INTERFACE_MODE_SGMII.

The PCS(serdes) and clock are also needed to be configured to
bringup qca8084 PHY, which will be added in the pcs driver.

The additional CDT configurations used for qca8084.

Signed-off-by: Luo Jie <redacted>
---
 drivers/net/phy/at803x.c | 49 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)

diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c
index 37fb033e1c29..8dfdf2ff56a5 100644
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c

@@ -176,6 +176,7 @@
 #define AT8030_PHY_ID_MASK			0xffffffef
 
 #define QCA8081_PHY_ID				0x004dd101
+#define QCA8084_PHY_ID				0x004dd180
 
 #define QCA8327_A_PHY_ID			0x004dd033
 #define QCA8327_B_PHY_ID			0x004dd034

@@ -1760,6 +1761,9 @@ static bool qca808x_is_prefer_master(struct phy_device *phydev)
 
 static bool qca808x_has_fast_retrain_or_slave_seed(struct phy_device *phydev)
 {
+	if (phydev_id_compare(phydev, QCA8084_PHY_ID))
+		return false;
+
 	return linkmode_test_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, phydev->supported);
 }