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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
105 lines
2.6 KiB
C
105 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Teranetics PHY drivers
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*
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* Copyright 2010-2011 Freescale Semiconductor, Inc.
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* author Andy Fleming
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*/
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#include <common.h>
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#include <phy.h>
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#include <linux/delay.h>
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#ifndef CONFIG_PHYLIB_10G
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#error The Teranetics PHY needs 10G support
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#endif
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int tn2020_config(struct phy_device *phydev)
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{
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if (phydev->port == PORT_FIBRE) {
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unsigned short restart_an = (MDIO_AN_CTRL1_RESTART |
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MDIO_AN_CTRL1_ENABLE |
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MDIO_AN_CTRL1_XNP);
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u8 phy_hwversion;
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/*
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* bit 15:12 of register 30.32 indicates PHY hardware
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* version. It can be used to distinguish TN80xx from
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* TN2020. TN2020 needs write 0x2 to 30.93, but TN80xx
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* needs 0x1.
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*/
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phy_hwversion = (phy_read(phydev, 30, 32) >> 12) & 0xf;
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if (phy_hwversion <= 3) {
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phy_write(phydev, 30, 93, 2);
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phy_write(phydev, MDIO_MMD_AN, MDIO_CTRL1, restart_an);
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} else {
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phy_write(phydev, 30, 93, 1);
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}
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}
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return 0;
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}
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int tn2020_startup(struct phy_device *phydev)
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{
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unsigned int timeout = 5 * 1000; /* 5 second timeout */
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#define MDIO_PHYXS_LANE_READY (MDIO_PHYXS_LNSTAT_SYNC0 | \
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MDIO_PHYXS_LNSTAT_SYNC1 | \
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MDIO_PHYXS_LNSTAT_SYNC2 | \
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MDIO_PHYXS_LNSTAT_SYNC3 | \
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MDIO_PHYXS_LNSTAT_ALIGN)
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/*
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* Wait for the XAUI-SERDES lanes to align first. Under normal
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* circumstances, this can take up to three seconds.
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*/
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while (--timeout) {
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int reg = phy_read(phydev, MDIO_MMD_PHYXS, MDIO_PHYXS_LNSTAT);
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if (reg < 0) {
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printf("TN2020: Error reading from PHY at "
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"address %u\n", phydev->addr);
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break;
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}
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if ((reg & MDIO_PHYXS_LANE_READY) == MDIO_PHYXS_LANE_READY)
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break;
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udelay(1000);
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}
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if (!timeout) {
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/*
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* A timeout is bad, but it may not be fatal, so don't
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* return an error. Display a warning instead.
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*/
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printf("TN2020: Timeout waiting for PHY at address %u to "
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"align.\n", phydev->addr);
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}
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if (phydev->port != PORT_FIBRE)
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return gen10g_startup(phydev);
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/*
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* The TN2020 only pretends to support fiber.
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* It works, but it doesn't look like it works,
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* so the link status reports no link.
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*/
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phydev->link = 1;
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/* For now just lie and say it's 10G all the time */
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phydev->speed = SPEED_10000;
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phydev->duplex = DUPLEX_FULL;
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return 0;
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}
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U_BOOT_PHY_DRIVER(tn2020) = {
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.name = "Teranetics TN2020",
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.uid = PHY_UID_TN2020,
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.mask = 0xfffffff0,
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.features = PHY_10G_FEATURES,
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.mmds = (MDIO_DEVS_PMAPMD | MDIO_DEVS_PCS |
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MDIO_DEVS_PHYXS | MDIO_DEVS_AN |
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MDIO_DEVS_VEND1 | MDIO_DEVS_VEND2),
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.config = &tn2020_config,
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.startup = &tn2020_startup,
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.shutdown = &gen10g_shutdown,
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};
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