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Date: Tue, 27 Jun 2017 14:50:00 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@...adcom.com>, Florian Fainelli <f.fainelli@...il.com>, Jon Mason <jon.mason@...adcom.com>, "David S. Miller" <davem@...emloft.net>, Amit Pundir <amit.pundir@...aro.org> Subject: [PATCH 4.4 23/26] net: phy: Initialize mdio clock at probe function 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@...adcom.com> 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@...adcom.com> Fixes: ddc24ae1 ("net: phy: Broadcom iProc MDIO bus driver") Reviewed-by: Florian Fainelli <f.fainelli@...il.com> Signed-off-by: Jon Mason <jon.mason@...adcom.com> Signed-off-by: David S. Miller <davem@...emloft.net> Signed-off-by: Amit Pundir <amit.pundir@...aro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- drivers/net/phy/mdio-bcm-iproc.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) --- 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_bu 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_b 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 platf 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");
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