mirror of
https://github.com/brain-hackers/u-boot-brain
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
112 lines
2.6 KiB
C
112 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 <config.h>
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#include <common.h>
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#include <phy.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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struct phy_driver tn2020_driver = {
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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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int phy_teranetics_init(void)
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{
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phy_register(&tn2020_driver);
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return 0;
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}
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