diff options
| author | Grygorii Strashko <grygorii.strashko@ti.com> | 2019-11-18 23:04:46 +0200 |
|---|---|---|
| committer | Joe Hershberger <joe.hershberger@ni.com> | 2019-12-09 09:47:42 -0600 |
| commit | 37d6265f2bfa216e97324837471cb78cafe7b57f (patch) | |
| tree | 24ae6c9fa1fdcedc789bef3e2dbd8ecdf32ef607 /drivers/net/phy/dp83867.c | |
| parent | 253a5ff8712c4dc5821ebdc4e4124901d37c0339 (diff) | |
net: phy: dp83867: refactor rgmii configuration
Refactor SGMII configuration to group all settings together and reduce
number of MDIO transactions.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Diffstat (limited to 'drivers/net/phy/dp83867.c')
| -rw-r--r-- | drivers/net/phy/dp83867.c | 75 |
1 files changed, 36 insertions, 39 deletions
diff --git a/drivers/net/phy/dp83867.c b/drivers/net/phy/dp83867.c index f9bb925646..a43793cd42 100644 --- a/drivers/net/phy/dp83867.c +++ b/drivers/net/phy/dp83867.c @@ -62,9 +62,9 @@ /* PHY CTRL bits */ #define DP83867_PHYCR_FIFO_DEPTH_SHIFT 14 +#define DP83867_PHYCR_FIFO_DEPTH_MASK GENMASK(15, 14) #define DP83867_PHYCR_RESERVED_MASK BIT(11) #define DP83867_MDI_CROSSOVER 5 -#define DP83867_MDI_CROSSOVER_AUTO 2 #define DP83867_MDI_CROSSOVER_MDIX 2 #define DP83867_PHYCTRL_SGMIIEN 0x0800 #define DP83867_PHYCTRL_RXFIFO_SHIFT 12 @@ -277,11 +277,11 @@ static int dp83867_config(struct phy_device *phydev) } if (phy_interface_is_rgmii(phydev)) { - ret = phy_write(phydev, MDIO_DEVAD_NONE, MII_DP83867_PHYCTRL, - (DP83867_MDI_CROSSOVER_AUTO << DP83867_MDI_CROSSOVER) | - (dp83867->fifo_depth << DP83867_PHYCR_FIFO_DEPTH_SHIFT)); - if (ret) + val = phy_read(phydev, MDIO_DEVAD_NONE, MII_DP83867_PHYCTRL); + if (val < 0) goto err_out; + val &= ~DP83867_PHYCR_FIFO_DEPTH_MASK; + val |= (dp83867->fifo_depth << DP83867_PHYCR_FIFO_DEPTH_SHIFT); /* The code below checks if "port mirroring" N/A MODE4 has been * enabled during power on bootstrap. @@ -293,16 +293,39 @@ static int dp83867_config(struct phy_device *phydev) * register's bit 11 (marked as RESERVED). */ - bs = phy_read_mmd(phydev, DP83867_DEVADDR, - DP83867_STRAP_STS1); - val = phy_read(phydev, MDIO_DEVAD_NONE, MII_DP83867_PHYCTRL); - if (bs & DP83867_STRAP_STS1_RESERVED) { + bs = phy_read_mmd(phydev, DP83867_DEVADDR, DP83867_STRAP_STS1); + if (bs & DP83867_STRAP_STS1_RESERVED) val &= ~DP83867_PHYCR_RESERVED_MASK; - phy_write(phydev, MDIO_DEVAD_NONE, MII_DP83867_PHYCTRL, - val); - } - } else if (phy_interface_is_sgmii(phydev)) { + ret = phy_write(phydev, MDIO_DEVAD_NONE, + MII_DP83867_PHYCTRL, val); + + val = phy_read_mmd(phydev, DP83867_DEVADDR, + DP83867_RGMIICTL); + + val &= ~(DP83867_RGMII_TX_CLK_DELAY_EN | + DP83867_RGMII_RX_CLK_DELAY_EN); + if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) + val |= (DP83867_RGMII_TX_CLK_DELAY_EN | + DP83867_RGMII_RX_CLK_DELAY_EN); + + if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) + val |= DP83867_RGMII_TX_CLK_DELAY_EN; + + if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) + val |= DP83867_RGMII_RX_CLK_DELAY_EN; + + phy_write_mmd(phydev, DP83867_DEVADDR, DP83867_RGMIICTL, val); + + delay = (dp83867->rx_id_delay | + (dp83867->tx_id_delay << + DP83867_RGMII_TX_CLK_DELAY_SHIFT)); + + phy_write_mmd(phydev, DP83867_DEVADDR, + DP83867_RGMIIDCTL, delay); + } + + if (phy_interface_is_sgmii(phydev)) { phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, (BMCR_ANENABLE | BMCR_FULLDPLX | BMCR_SPEED1000)); @@ -327,32 +350,6 @@ static int dp83867_config(struct phy_device *phydev) phy_write(phydev, MDIO_DEVAD_NONE, MII_DP83867_BISCR, 0x0); } - if (phy_interface_is_rgmii(phydev)) { - val = phy_read_mmd(phydev, DP83867_DEVADDR, - DP83867_RGMIICTL); - - val &= ~(DP83867_RGMII_TX_CLK_DELAY_EN | - DP83867_RGMII_RX_CLK_DELAY_EN); - if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) - val |= (DP83867_RGMII_TX_CLK_DELAY_EN | - DP83867_RGMII_RX_CLK_DELAY_EN); - - if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) - val |= DP83867_RGMII_TX_CLK_DELAY_EN; - - if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) - val |= DP83867_RGMII_RX_CLK_DELAY_EN; - - phy_write_mmd(phydev, DP83867_DEVADDR, - DP83867_RGMIICTL, val); - - delay = (dp83867->rx_id_delay | - (dp83867->tx_id_delay << DP83867_RGMII_TX_CLK_DELAY_SHIFT)); - - phy_write_mmd(phydev, DP83867_DEVADDR, - DP83867_RGMIIDCTL, delay); - } - if (dp83867->io_impedance >= 0) { val = phy_read_mmd(phydev, DP83867_DEVADDR, |