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authorYendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com>2017-02-08 17:14:26 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-06-29 12:48:53 +0200
commit9b54821d518407b9763b0abf382a413a5029feaa (patch)
tree96ad5ab149daa89b0c3698fa3010c1d12db8b3de
parent889caad4fbe49e3a612ccb971e40c50912f90ace (diff)
downloadlinux-linaro-stable-9b54821d518407b9763b0abf382a413a5029feaa.tar.gz
net: phy: Initialize mdio clock at probe function
commit bb1a619735b4660f21bce3e728b937640024b4ad 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>
-rw-r--r--drivers/net/phy/mdio-bcm-iproc.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/net/phy/mdio-bcm-iproc.c b/drivers/net/phy/mdio-bcm-iproc.c
index c0b4e65267af..46fe1ae919a3 100644
--- a/drivers/net/phy/mdio-bcm-iproc.c
+++ b/drivers/net/phy/mdio-bcm-iproc.c
@@ -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");