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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>
This commit is contained in:
Horatiu Vultur 2021-12-23 09:28:26 +01:00 committed by David S. Miller
parent 24d8a9001a
commit 7467d71658
1 changed files with 32 additions and 0 deletions
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32
drivers/net/phy/micrel.c
View File

@ -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,