[PATCH RESEND2 net-next 4/8] phy: qcom-sgmii-eth: remove .set_speed() implementation

["Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>]

Now that the qcom-ethqos driver has migrated to use phy_set_mode_ext()
rather than phy_set_speed() to configure the SerDes, the support for
phy_set_speed() is now obsolete. Remove support for this method.

Using the MAC speed for the SerDes is never correct due to the PCS
encoding. For SGMII and 2500BASE-X, the PCS uses 8B10B encoding, and
so:

  MAC rate * PCS output bits / PCS input bits = SerDes rate
   1000M   *       10        /       8        = 1250M
   2500M   *       10        /       8        = 3125M

Tested-by: Mohd Ayaan Anwar <mohd.anwar@oss.qualcomm.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
---
 drivers/phy/qualcomm/phy-qcom-sgmii-eth.c | 11 -----------
 1 file changed, 11 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-sgmii-eth.c b/drivers/phy/qualcomm/phy-qcom-sgmii-eth.c
index 4ea3dce7719f..dcfdb7d0e8ea 100644
--- a/drivers/phy/qualcomm/phy-qcom-sgmii-eth.c
+++ b/drivers/phy/qualcomm/phy-qcom-sgmii-eth.c
@@ -318,16 +318,6 @@ static int qcom_dwmac_sgmii_phy_set_mode(struct phy *phy, enum phy_mode mode,
 	return qcom_dwmac_sgmii_phy_calibrate(phy);
 }
 
-static int qcom_dwmac_sgmii_phy_set_speed(struct phy *phy, int speed)
-{
-	struct qcom_dwmac_sgmii_phy_data *data = phy_get_drvdata(phy);
-
-	if (speed != data->speed)
-		data->speed = speed;
-
-	return qcom_dwmac_sgmii_phy_calibrate(phy);
-}
-
 static int qcom_dwmac_sgmii_phy_validate(struct phy *phy, enum phy_mode mode,
 					 int submode,
 					 union phy_configure_opts *opts)
@@ -341,7 +331,6 @@ static const struct phy_ops qcom_dwmac_sgmii_phy_ops = {
 	.power_on	= qcom_dwmac_sgmii_phy_power_on,
 	.power_off	= qcom_dwmac_sgmii_phy_power_off,
 	.set_mode	= qcom_dwmac_sgmii_phy_set_mode,
-	.set_speed	= qcom_dwmac_sgmii_phy_set_speed,
 	.validate	= qcom_dwmac_sgmii_phy_validate,
 	.calibrate	= qcom_dwmac_sgmii_phy_calibrate,
 	.owner		= THIS_MODULE,
-- 
2.47.3