diff options
Diffstat (limited to 'target/linux/generic/patches-3.14/070-net-phy-move-PHY-software-reset.patch')
| -rw-r--r-- | target/linux/generic/patches-3.14/070-net-phy-move-PHY-software-reset.patch | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.14/070-net-phy-move-PHY-software-reset.patch b/target/linux/generic/patches-3.14/070-net-phy-move-PHY-software-reset.patch new file mode 100644 index 0000000000..007a7aad3d --- /dev/null +++ b/target/linux/generic/patches-3.14/070-net-phy-move-PHY-software-reset.patch @@ -0,0 +1,71 @@ +commit 797ac07137d9ae8572008e21e6123a9ae17dae50 +Author: Florian Fainelli <f.fainelli@gmail.com> +Date: Mon Feb 17 13:34:02 2014 -0800 + + net: phy: move PHY software reset to genphy_soft_reset + + As pointed out by Shaohui, this function is generic for 10/100/1000 + PHYs, but 10G PHYs might have a slightly different reset sequence which + prevents most of them from using this function. + + Move the BMCR_RESET based software resent sequence to + genphy_soft_reset() in preparation for allowing PHY drivers to implement + a soft_reset() callback. + + Reported-by: Shaohui Xie <Shaohui.Xie@freescale.com> + Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> + Signed-off-by: David S. Miller <davem@davemloft.net> + +--- a/drivers/net/phy/phy_device.c ++++ b/drivers/net/phy/phy_device.c +@@ -539,11 +539,7 @@ int phy_init_hw(struct phy_device *phyde + if (!phydev->drv || !phydev->drv->config_init) + return 0; + +- ret = phy_write(phydev, MII_BMCR, BMCR_RESET); +- if (ret < 0) +- return ret; +- +- ret = phy_poll_reset(phydev); ++ ret = genphy_soft_reset(phydev); + if (ret < 0) + return ret; + +@@ -1029,6 +1025,27 @@ static int gen10g_read_status(struct phy + return 0; + } + ++/** ++ * genphy_soft_reset - software reset the PHY via BMCR_RESET bit ++ * @phydev: target phy_device struct ++ * ++ * Description: Perform a software PHY reset using the standard ++ * BMCR_RESET bit and poll for the reset bit to be cleared. ++ * ++ * Returns: 0 on success, < 0 on failure ++ */ ++int genphy_soft_reset(struct phy_device *phydev) ++{ ++ int ret; ++ ++ ret = phy_write(phydev, MII_BMCR, BMCR_RESET); ++ if (ret < 0) ++ return ret; ++ ++ return phy_poll_reset(phydev); ++} ++EXPORT_SYMBOL(genphy_soft_reset); ++ + static int genphy_config_init(struct phy_device *phydev) + { + int val; +--- a/include/linux/phy.h ++++ b/include/linux/phy.h +@@ -616,6 +616,7 @@ int genphy_update_link(struct phy_device + int genphy_read_status(struct phy_device *phydev); + int genphy_suspend(struct phy_device *phydev); + int genphy_resume(struct phy_device *phydev); ++int genphy_soft_reset(struct phy_device *phydev); + void phy_driver_unregister(struct phy_driver *drv); + void phy_drivers_unregister(struct phy_driver *drv, int n); + int phy_driver_register(struct phy_driver *new_driver); |