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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>
128 lines
3.0 KiB
C
128 lines
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* National Semiconductor DP83848 PHY Driver for TI DaVinci
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* (TMS320DM644x) based boards.
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*
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* Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
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*
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* --------------------------------------------------------
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*/
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#include <common.h>
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#include <net.h>
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#include <dp83848.h>
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#include <asm/arch/emac_defs.h>
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#include "../../../drivers/net/davinci_emac.h"
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#ifdef CONFIG_DRIVER_TI_EMAC
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#ifdef CONFIG_CMD_NET
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int dp83848_is_phy_connected(int phy_addr)
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{
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u_int16_t id1, id2;
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if (!davinci_eth_phy_read(phy_addr, DP83848_PHYID1_REG, &id1))
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return(0);
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if (!davinci_eth_phy_read(phy_addr, DP83848_PHYID2_REG, &id2))
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return(0);
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if ((id1 == DP83848_PHYID1_OUI) && (id2 == DP83848_PHYID2_OUI))
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return(1);
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return(0);
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}
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int dp83848_get_link_speed(int phy_addr)
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{
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u_int16_t tmp;
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volatile emac_regs* emac = (emac_regs *)EMAC_BASE_ADDR;
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if (!davinci_eth_phy_read(phy_addr, DP83848_STAT_REG, &tmp))
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return(0);
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if (!(tmp & DP83848_LINK_STATUS)) /* link up? */
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return(0);
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if (!davinci_eth_phy_read(phy_addr, DP83848_PHY_STAT_REG, &tmp))
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return(0);
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/* Speed doesn't matter, there is no setting for it in EMAC... */
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if (tmp & DP83848_DUPLEX) {
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/* set DM644x EMAC for Full Duplex */
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emac->MACCONTROL = EMAC_MACCONTROL_MIIEN_ENABLE |
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EMAC_MACCONTROL_FULLDUPLEX_ENABLE;
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} else {
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/*set DM644x EMAC for Half Duplex */
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emac->MACCONTROL = EMAC_MACCONTROL_MIIEN_ENABLE;
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}
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return(1);
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}
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int dp83848_init_phy(int phy_addr)
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{
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int ret = 1;
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if (!dp83848_get_link_speed(phy_addr)) {
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/* Try another time */
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udelay(100000);
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ret = dp83848_get_link_speed(phy_addr);
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}
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/* Disable PHY Interrupts */
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davinci_eth_phy_write(phy_addr, DP83848_PHY_INTR_CTRL_REG, 0);
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return(ret);
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}
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int dp83848_auto_negotiate(int phy_addr)
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{
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u_int16_t tmp;
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if (!davinci_eth_phy_read(phy_addr, DP83848_CTL_REG, &tmp))
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return(0);
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/* Restart Auto_negotiation */
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tmp &= ~DP83848_AUTONEG; /* remove autonegotiation enable */
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tmp |= DP83848_ISOLATE; /* Electrically isolate PHY */
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davinci_eth_phy_write(phy_addr, DP83848_CTL_REG, tmp);
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/* Set the Auto_negotiation Advertisement Register
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* MII advertising for Next page, 100BaseTxFD and HD,
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* 10BaseTFD and HD, IEEE 802.3
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*/
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tmp = DP83848_NP | DP83848_TX_FDX | DP83848_TX_HDX |
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DP83848_10_FDX | DP83848_10_HDX | DP83848_AN_IEEE_802_3;
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davinci_eth_phy_write(phy_addr, DP83848_ANA_REG, tmp);
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/* Read Control Register */
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if (!davinci_eth_phy_read(phy_addr, DP83848_CTL_REG, &tmp))
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return(0);
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tmp |= DP83848_SPEED_SELECT | DP83848_AUTONEG | DP83848_DUPLEX_MODE;
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davinci_eth_phy_write(phy_addr, DP83848_CTL_REG, tmp);
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/* Restart Auto_negotiation */
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tmp |= DP83848_RESTART_AUTONEG;
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davinci_eth_phy_write(phy_addr, DP83848_CTL_REG, tmp);
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/*check AutoNegotiate complete */
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udelay(10000);
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if (!davinci_eth_phy_read(phy_addr, DP83848_STAT_REG, &tmp))
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return(0);
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if (!(tmp & DP83848_AUTONEG_COMP))
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return(0);
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return (dp83848_get_link_speed(phy_addr));
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}
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#endif /* CONFIG_CMD_NET */
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#endif /* CONFIG_DRIVER_ETHER */
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