diff options
Diffstat (limited to 'target/linux/generic/patches-3.14/071-net-phy-override-PHY-reset.patch')
-rw-r--r-- | target/linux/generic/patches-3.14/071-net-phy-override-PHY-reset.patch | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.14/071-net-phy-override-PHY-reset.patch b/target/linux/generic/patches-3.14/071-net-phy-override-PHY-reset.patch new file mode 100644 index 0000000000..c70d40a677 --- /dev/null +++ b/target/linux/generic/patches-3.14/071-net-phy-override-PHY-reset.patch @@ -0,0 +1,81 @@ +commit 9df81dd7583d14862d0cfb673a941b261f3b2112 +Author: Florian Fainelli <f.fainelli@gmail.com> +Date: Mon Feb 17 13:34:03 2014 -0800 + + net: phy: allow PHY drivers to implement their own software reset + + As pointed out by Shaohui, most 10G PHYs out there have a non-standard + compliant software reset sequence, eventually something much more + complex than just toggling the BMCR_RESET bit. Allow PHY driver to + implement their own soft_reset() callback to deal with that. If no + callback is provided, call into genphy_soft_reset() which makes sure the + existing behavior is kept intact. + + 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 +@@ -534,12 +534,16 @@ static int phy_poll_reset(struct phy_dev + + int phy_init_hw(struct phy_device *phydev) + { +- int ret; ++ int ret = 0; + + if (!phydev->drv || !phydev->drv->config_init) + return 0; + +- ret = genphy_soft_reset(phydev); ++ if (phydev->drv->soft_reset) ++ ret = phydev->drv->soft_reset(phydev); ++ else ++ ret = genphy_soft_reset(phydev); ++ + if (ret < 0) + return ret; + +@@ -1092,6 +1096,12 @@ static int genphy_config_init(struct phy + return 0; + } + ++static int gen10g_soft_reset(struct phy_device *phydev) ++{ ++ /* Do nothing for now */ ++ return 0; ++} ++ + static int gen10g_config_init(struct phy_device *phydev) + { + /* Temporarily just say we support everything */ +@@ -1266,6 +1276,7 @@ static struct phy_driver genphy_driver[] + .phy_id = 0xffffffff, + .phy_id_mask = 0xffffffff, + .name = "Generic PHY", ++ .soft_reset = genphy_soft_reset, + .config_init = genphy_config_init, + .features = 0, + .config_aneg = genphy_config_aneg, +@@ -1277,6 +1288,7 @@ static struct phy_driver genphy_driver[] + .phy_id = 0xffffffff, + .phy_id_mask = 0xffffffff, + .name = "Generic 10G PHY", ++ .soft_reset = gen10g_soft_reset, + .config_init = gen10g_config_init, + .features = 0, + .config_aneg = gen10g_config_aneg, +--- a/include/linux/phy.h ++++ b/include/linux/phy.h +@@ -394,6 +394,11 @@ struct phy_driver { + u32 flags; + + /* ++ * Called to issue a PHY software reset ++ */ ++ int (*soft_reset)(struct phy_device *phydev); ++ ++ /* + * Called to initialize the PHY, + * including after a reset + */ |