diff options
Diffstat (limited to 'target/linux/generic/pending-4.14/735-net-phy-at803x-fix-at8033-sgmii-mode.patch')
| -rw-r--r-- | target/linux/generic/pending-4.14/735-net-phy-at803x-fix-at8033-sgmii-mode.patch | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/target/linux/generic/pending-4.14/735-net-phy-at803x-fix-at8033-sgmii-mode.patch b/target/linux/generic/pending-4.14/735-net-phy-at803x-fix-at8033-sgmii-mode.patch new file mode 100644 index 0000000000..3c686623b9 --- /dev/null +++ b/target/linux/generic/pending-4.14/735-net-phy-at803x-fix-at8033-sgmii-mode.patch @@ -0,0 +1,54 @@ +From: Roman Yeryomin <roman@advem.lv> +Subject: kernel: add at803x fix for sgmii mode + +Some (possibly broken) bootloaders incorreclty initialize at8033 +phy. This patch enables sgmii autonegotiation mode. + +[john@phrozen.org: felix added this to his upstream queue] + +Signed-off-by: Roman Yeryomin <roman@advem.lv> +--- + drivers/net/phy/at803x.c | 25 +++++++++++++++++++++++++ + 1 file changed, 25 insertions(+) + +--- a/drivers/net/phy/at803x.c ++++ b/drivers/net/phy/at803x.c +@@ -55,6 +55,10 @@ + #define AT803X_DEBUG_ADDR 0x1D + #define AT803X_DEBUG_DATA 0x1E + ++#define AT803X_REG_CHIP_CONFIG 0x1f ++#define AT803X_BT_BX_REG_SEL 0x8000 ++#define AT803X_SGMII_ANEG_EN 0x1000 ++ + #define AT803X_MODE_CFG_MASK 0x0F + #define AT803X_MODE_CFG_SGMII 0x01 + +@@ -296,6 +300,27 @@ static int at803x_config_init(struct phy + { + struct at803x_platform_data *pdata; + int ret; ++ u32 v; ++ ++ if (phydev->drv->phy_id == ATH8031_PHY_ID && ++ phydev->interface == PHY_INTERFACE_MODE_SGMII) ++ { ++ v = phy_read(phydev, AT803X_REG_CHIP_CONFIG); ++ /* select SGMII/fiber page */ ++ ret = phy_write(phydev, AT803X_REG_CHIP_CONFIG, ++ v & ~AT803X_BT_BX_REG_SEL); ++ if (ret) ++ return ret; ++ /* enable SGMII autonegotiation */ ++ ret = phy_write(phydev, MII_BMCR, AT803X_SGMII_ANEG_EN); ++ if (ret) ++ return ret; ++ /* select copper page */ ++ ret = phy_write(phydev, AT803X_REG_CHIP_CONFIG, ++ v | AT803X_BT_BX_REG_SEL); ++ if (ret) ++ return ret; ++ } + + ret = genphy_config_init(phydev); + if (ret < 0) |