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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>
92 lines
2.1 KiB
C
92 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Generic PHY Management code
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*
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* Copyright 2011 Freescale Semiconductor, Inc.
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* author Andy Fleming
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*
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* Based loosely off of Linux's PHY Lib
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*/
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#include <common.h>
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#include <miiphy.h>
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#include <phy.h>
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int gen10g_shutdown(struct phy_device *phydev)
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{
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return 0;
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}
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int gen10g_startup(struct phy_device *phydev)
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{
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int devad, reg;
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u32 mmd_mask = phydev->mmds & MDIO_DEVS_LINK;
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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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/*
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* Go through all the link-reporting devices, and make sure
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* they're all up and happy
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*/
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for (devad = 0; mmd_mask; devad++, mmd_mask = mmd_mask >> 1) {
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if (!(mmd_mask & 1))
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continue;
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/* Read twice because link state is latched and a
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* read moves the current state into the register */
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phy_read(phydev, devad, MDIO_STAT1);
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reg = phy_read(phydev, devad, MDIO_STAT1);
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if (reg < 0 || !(reg & MDIO_STAT1_LSTATUS))
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phydev->link = 0;
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}
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return 0;
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}
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int gen10g_discover_mmds(struct phy_device *phydev)
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{
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int mmd, stat2, devs1, devs2;
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/* Assume PHY must have at least one of PMA/PMD, WIS, PCS, PHY
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* XS or DTE XS; give up if none is present. */
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for (mmd = 1; mmd <= 5; mmd++) {
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/* Is this MMD present? */
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stat2 = phy_read(phydev, mmd, MDIO_STAT2);
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if (stat2 < 0 ||
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(stat2 & MDIO_STAT2_DEVPRST) != MDIO_STAT2_DEVPRST_VAL)
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continue;
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/* It should tell us about all the other MMDs */
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devs1 = phy_read(phydev, mmd, MDIO_DEVS1);
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devs2 = phy_read(phydev, mmd, MDIO_DEVS2);
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if (devs1 < 0 || devs2 < 0)
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continue;
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phydev->mmds = devs1 | (devs2 << 16);
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return 0;
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}
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return 0;
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}
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int gen10g_config(struct phy_device *phydev)
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{
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/* For now, assume 10000baseT. Fill in later */
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phydev->supported = phydev->advertising = SUPPORTED_10000baseT_Full;
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return gen10g_discover_mmds(phydev);
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}
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U_BOOT_PHY_DRIVER(gen10g) = {
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.uid = 0xffffffff,
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.mask = 0xffffffff,
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.name = "Generic 10G PHY",
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.features = 0,
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.config = gen10g_config,
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.startup = gen10g_startup,
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.shutdown = gen10g_shutdown,
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};
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