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net: phy: Initialize mdio clock at probe function

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commit bb1a619735 upstream.

USB PHYs need the MDIO clock divisor enabled earlier to work.
Initialize mdio clock divisor in probe function. The ext bus
bit available in the same register will be used by mdio mux
to enable external mdio.

Signed-off-by: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com>
Fixes: ddc24ae1 ("net: phy: Broadcom iProc MDIO bus driver")
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jon Mason <jon.mason@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Yendapally Reddy Dhananjaya Reddy 2017-02-08 17:14:26 -05:00 committed by Greg Kroah-Hartman
parent 889caad4fb
commit 9b54821d51
1 changed files with 2 additions and 4 deletions
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6
drivers/net/phy/mdio-bcm-iproc.c
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@ -81,8 +81,6 @@ static int iproc_mdio_read(struct mii_bus *bus, int phy_id, int reg)
if (rc)
return rc;
iproc_mdio_config_clk(priv->base);
/* Prepare the read operation */
cmd = (MII_DATA_TA_VAL << MII_DATA_TA_SHIFT) |
(reg << MII_DATA_RA_SHIFT) |
@ -112,8 +110,6 @@ static int iproc_mdio_write(struct mii_bus *bus, int phy_id,
if (rc)
return rc;
iproc_mdio_config_clk(priv->base);
/* Prepare the write operation */
cmd = (MII_DATA_TA_VAL << MII_DATA_TA_SHIFT) |
(reg << MII_DATA_RA_SHIFT) |
@ -163,6 +159,8 @@ static int iproc_mdio_probe(struct platform_device *pdev)
bus->read = iproc_mdio_read;
bus->write = iproc_mdio_write;
iproc_mdio_config_clk(priv->base);
rc = of_mdiobus_register(bus, pdev->dev.of_node);
if (rc) {
dev_err(&pdev->dev, "MDIO bus registration failed\n");