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net: phy: mscc: add support for RGMII MAC mode

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This patch adds support for connecting VSC8584 PHYs to the MAC using
RGMII.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Antoine Tenart 2020-03-19 15:19:57 +01:00 committed by David S. Miller
parent 9096a03f3c
commit e8e4223046
2 changed files with 21 additions and 12 deletions
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1
drivers/net/phy/mscc/mscc.h
View File

@ -241,6 +241,7 @@ enum rgmii_rx_clock_delay {
#define MAC_CFG_MASK 0xc000
#define MAC_CFG_SGMII 0x0000
#define MAC_CFG_QSGMII 0x4000
#define MAC_CFG_RGMII 0x8000
/* Test page Registers */
#define MSCC_PHY_TEST_PAGE_5 5

32
drivers/net/phy/mscc/mscc_main.c
View File

@ -1360,27 +1360,35 @@ static int vsc8584_config_init(struct phy_device *phydev)
val = phy_base_read(phydev, MSCC_PHY_MAC_CFG_FASTLINK);
val &= ~MAC_CFG_MASK;
if (phydev->interface == PHY_INTERFACE_MODE_QSGMII)
if (phydev->interface == PHY_INTERFACE_MODE_QSGMII) {
val |= MAC_CFG_QSGMII;
else
} else if (phydev->interface == PHY_INTERFACE_MODE_SGMII) {
val |= MAC_CFG_SGMII;
} else if (phy_interface_is_rgmii(phydev)) {
val |= MAC_CFG_RGMII;
} else {
ret = -EINVAL;
goto err;
}
ret = phy_base_write(phydev, MSCC_PHY_MAC_CFG_FASTLINK, val);
if (ret)
goto err;
val = PROC_CMD_MCB_ACCESS_MAC_CONF | PROC_CMD_RST_CONF_PORT |
PROC_CMD_READ_MOD_WRITE_PORT;
if (phydev->interface == PHY_INTERFACE_MODE_QSGMII)
val |= PROC_CMD_QSGMII_MAC;
else
val |= PROC_CMD_SGMII_MAC;
if (!phy_interface_is_rgmii(phydev)) {
val = PROC_CMD_MCB_ACCESS_MAC_CONF | PROC_CMD_RST_CONF_PORT |
PROC_CMD_READ_MOD_WRITE_PORT;
if (phydev->interface == PHY_INTERFACE_MODE_QSGMII)
val |= PROC_CMD_QSGMII_MAC;
else
val |= PROC_CMD_SGMII_MAC;
ret = vsc8584_cmd(phydev, val);
if (ret)
goto err;
ret = vsc8584_cmd(phydev, val);
if (ret)
goto err;
usleep_range(10000, 20000);
usleep_range(10000, 20000);
}
/* Disable SerDes for 100Base-FX */
ret = vsc8584_cmd(phydev, PROC_CMD_FIBER_MEDIA_CONF |