diff options
| author | Horatiu Vultur <horatiu.vultur@microchip.com> | 2021-12-23 11:28:26 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-12-24 13:48:34 +0300 |
| commit | 7467d716583eec12ae84a33fb1fb27d22333fc64 (patch) | |
| tree | c5f452a4900967f6c7022a0e5ae8f5fe7e6246d7 /drivers/net/phy | |
| parent | 24d8a9001a91716d9399d1606b32ec27e9f6d125 (diff) | |
| download | linux-7467d716583eec12ae84a33fb1fb27d22333fc64.tar.xz | |
net: phy: micrel: Add config_init for LAN8814
Add config_init for LAN8814. This function is required for the following
reasons:
- we need to make sure that the PHY is reset,
- disable ANEG with QSGMII PCS Host side
- swap the MDI-X A,B transmit so that there will not be any link flip-flaps
when the PHY gets a link.
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy')
| -rw-r--r-- | drivers/net/phy/micrel.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c index c6a97fcca0e6..4570cb9535b7 100644 --- a/drivers/net/phy/micrel.c +++ b/drivers/net/phy/micrel.c @@ -1578,6 +1578,14 @@ static int ksz886x_cable_test_get_status(struct phy_device *phydev, #define LAN_EXT_PAGE_ACCESS_ADDRESS_DATA 0x17 #define LAN_EXT_PAGE_ACCESS_CTRL_EP_FUNC 0x4000 +#define LAN8814_QSGMII_SOFT_RESET 0x43 +#define LAN8814_QSGMII_SOFT_RESET_BIT BIT(0) +#define LAN8814_QSGMII_PCS1G_ANEG_CONFIG 0x13 +#define LAN8814_QSGMII_PCS1G_ANEG_CONFIG_ANEG_ENA BIT(3) +#define LAN8814_ALIGN_SWAP 0x4a +#define LAN8814_ALIGN_TX_A_B_SWAP 0x1 +#define LAN8814_ALIGN_TX_A_B_SWAP_MASK GENMASK(2, 0) + #define LAN8804_ALIGN_SWAP 0x4a #define LAN8804_ALIGN_TX_A_B_SWAP 0x1 #define LAN8804_ALIGN_TX_A_B_SWAP_MASK GENMASK(2, 0) @@ -1614,6 +1622,29 @@ static int lanphy_write_page_reg(struct phy_device *phydev, int page, u16 addr, return 0; } +static int lan8814_config_init(struct phy_device *phydev) +{ + int val; + + /* Reset the PHY */ + val = lanphy_read_page_reg(phydev, 4, LAN8814_QSGMII_SOFT_RESET); + val |= LAN8814_QSGMII_SOFT_RESET_BIT; + lanphy_write_page_reg(phydev, 4, LAN8814_QSGMII_SOFT_RESET, val); + + /* Disable ANEG with QSGMII PCS Host side */ + val = lanphy_read_page_reg(phydev, 5, LAN8814_QSGMII_PCS1G_ANEG_CONFIG); + val &= ~LAN8814_QSGMII_PCS1G_ANEG_CONFIG_ANEG_ENA; + lanphy_write_page_reg(phydev, 5, LAN8814_QSGMII_PCS1G_ANEG_CONFIG, val); + + /* MDI-X setting for swap A,B transmit */ + val = lanphy_read_page_reg(phydev, 2, LAN8814_ALIGN_SWAP); + val &= ~LAN8814_ALIGN_TX_A_B_SWAP_MASK; + val |= LAN8814_ALIGN_TX_A_B_SWAP; + lanphy_write_page_reg(phydev, 2, LAN8814_ALIGN_SWAP, val); + + return 0; +} + static int lan8804_config_init(struct phy_device *phydev) { int val; @@ -1858,6 +1889,7 @@ static struct phy_driver ksphy_driver[] = { .phy_id = PHY_ID_LAN8814, .phy_id_mask = MICREL_PHY_ID_MASK, .name = "Microchip INDY Gigabit Quad PHY", + .config_init = lan8814_config_init, .driver_data = &ksz9021_type, .probe = kszphy_probe, .soft_reset = genphy_soft_reset, |