1 files changed, 113 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/lxt972.c b/arch/arm/mach-davinci/lxt972.c
new file mode 100644
index 0000000..a7356f9
--- /dev/null
+++ b/arch/arm/mach-davinci/lxt972.c
@@ -0,0 +1,113 @@
+/*
+ * Intel LXT971/LXT972 PHY Driver for TI DaVinci
+ * (TMS320DM644x) based boards.
+ *
+ * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
+ *
+ * --------------------------------------------------------
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <net.h>
+#include <miiphy.h>
+#include <lxt971a.h>
+#include <asm/arch/emac_defs.h>
+#include "../../../drivers/net/davinci_emac.h"
+
+#ifdef CONFIG_DRIVER_TI_EMAC
+
+#ifdef CONFIG_CMD_NET
+
+int lxt972_is_phy_connected(int phy_addr)
+{
+	u_int16_t id1, id2;
+
+	if (!davinci_eth_phy_read(phy_addr, MII_PHYSID1, &id1))
+		return(0);
+	if (!davinci_eth_phy_read(phy_addr, MII_PHYSID2, &id2))
+		return(0);
+
+	if ((id1 == (0x0013)) && ((id2  & 0xfff0) == 0x78e0))
+		return(1);
+
+	return(0);
+}
+
+int lxt972_get_link_speed(int phy_addr)
+{
+	u_int16_t stat1, tmp;
+	volatile emac_regs *emac = (emac_regs *)EMAC_BASE_ADDR;
+
+	if (!davinci_eth_phy_read(phy_addr, PHY_LXT971_STAT2, &stat1))
+		return(0);
+
+	if (!(stat1 & PHY_LXT971_STAT2_LINK))	/* link up? */
+		return(0);
+
+	if (!davinci_eth_phy_read(phy_addr, PHY_LXT971_DIG_CFG, &tmp))
+		return(0);
+
+	tmp |= PHY_LXT971_DIG_CFG_MII_DRIVE;
+
+	davinci_eth_phy_write(phy_addr, PHY_LXT971_DIG_CFG, tmp);
+	/* Read back */
+	if (!davinci_eth_phy_read(phy_addr, PHY_LXT971_DIG_CFG, &tmp))
+		return(0);
+
+	/* Speed doesn't matter, there is no setting for it in EMAC... */
+	if (stat1 & PHY_LXT971_STAT2_DUPLEX_MODE) {
+		/* set DM644x EMAC for Full Duplex  */
+		emac->MACCONTROL = EMAC_MACCONTROL_MIIEN_ENABLE |
+			EMAC_MACCONTROL_FULLDUPLEX_ENABLE;
+	} else {
+		/*set DM644x EMAC for Half Duplex  */
+		emac->MACCONTROL = EMAC_MACCONTROL_MIIEN_ENABLE;
+	}
+
+	return(1);
+}
+
+
+int lxt972_init_phy(int phy_addr)
+{
+	int ret = 1;
+
+	if (!lxt972_get_link_speed(phy_addr)) {
+		/* Try another time */
+		ret = lxt972_get_link_speed(phy_addr);
+	}
+
+	/* Disable PHY Interrupts */
+	davinci_eth_phy_write(phy_addr, PHY_LXT971_INT_ENABLE, 0);
+
+	return(ret);
+}
+
+
+int lxt972_auto_negotiate(int phy_addr)
+{
+	u_int16_t tmp;
+
+	if (!davinci_eth_phy_read(phy_addr, MII_BMCR, &tmp))
+		return(0);
+
+	/* Restart Auto_negotiation  */
+	tmp |= BMCR_ANRESTART;
+	davinci_eth_phy_write(phy_addr, MII_BMCR, tmp);
+
+	/*check AutoNegotiate complete */
+	udelay (10000);
+	if (!davinci_eth_phy_read(phy_addr, MII_BMSR, &tmp))
+		return(0);
+
+	if (!(tmp & BMSR_ANEGCOMPLETE))
+		return(0);
+
+	return (lxt972_get_link_speed(phy_addr));
+}
+
+#endif	/* CONFIG_CMD_NET */
+
+#endif	/* CONFIG_DRIVER_ETHER */