target/linux/bcm53xx/patches-4.9/060-0001-net-phy-Initialize-mdio-clock-at-probe-function.patch

   1 From bb1a619735b4660f21bce3e728b937640024b4ad Mon Sep 17 00:00:00 2001
   2 From: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com>
   3 Date: Wed, 8 Feb 2017 17:14:26 -0500
   4 Subject: [PATCH] net: phy: Initialize mdio clock at probe function
   5
   6 USB PHYs need the MDIO clock divisor enabled earlier to work.
   7 Initialize mdio clock divisor in probe function. The ext bus
   8 bit available in the same register will be used by mdio mux
   9 to enable external mdio.
  10
  11 Signed-off-by: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com>
  12 Fixes: ddc24ae1 ("net: phy: Broadcom iProc MDIO bus driver")
  13 Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
  14 Signed-off-by: Jon Mason <jon.mason@broadcom.com>
  15 Signed-off-by: David S. Miller <davem@davemloft.net>
  16 ---
  17  drivers/net/phy/mdio-bcm-iproc.c | 6 ++----
  18  1 file changed, 2 insertions(+), 4 deletions(-)
  19
  20 --- a/drivers/net/phy/mdio-bcm-iproc.c
  21 +++ b/drivers/net/phy/mdio-bcm-iproc.c
  22 @@ -81,8 +81,6 @@ static int iproc_mdio_read(struct mii_bu
  23         if (rc)
  24                 return rc;
  25
  26 -       iproc_mdio_config_clk(priv->base);
  27 -
  28         /* Prepare the read operation */
  29         cmd = (MII_DATA_TA_VAL << MII_DATA_TA_SHIFT) |
  30                 (reg << MII_DATA_RA_SHIFT) |
  31 @@ -112,8 +110,6 @@ static int iproc_mdio_write(struct mii_b
  32         if (rc)
  33                 return rc;
  34
  35 -       iproc_mdio_config_clk(priv->base);
  36 -
  37         /* Prepare the write operation */
  38         cmd = (MII_DATA_TA_VAL << MII_DATA_TA_SHIFT) |
  39                 (reg << MII_DATA_RA_SHIFT) |
  40 @@ -163,6 +159,8 @@ static int iproc_mdio_probe(struct platf
  41         bus->read = iproc_mdio_read;
  42         bus->write = iproc_mdio_write;
  43
  44 +       iproc_mdio_config_clk(priv->base);
  45 +
  46         rc = of_mdiobus_register(bus, pdev->dev.of_node);
  47         if (rc) {
  48                 dev_err(&pdev->dev, "MDIO bus registration failed\n");