[U-Boot] [PATCH] net: Drop CONFIG_ENC28J60

* [U-Boot] [PATCH] net: Drop CONFIG_ENC28J60
@ 2018-03-20  0:02 Tuomas Tynkkynen
  2018-03-20  0:04 ` Joe Hershberger
  2018-03-26 19:26 ` [U-Boot] " Joe Hershberger
  0 siblings, 2 replies; 3+ messages in thread
From: Tuomas Tynkkynen @ 2018-03-20  0:02 UTC (permalink / raw)
  To: u-boot

Last user of this driver went away in October 2014 in
commit d58a9451e7339ed4 ("ppc/arm: zap EMK boards").

Signed-off-by: Tuomas Tynkkynen <tuomas@tuxera.com>
---
 drivers/net/Makefile   |   1 -
 drivers/net/enc28j60.c | 959 -------------------------------------------------
 drivers/net/enc28j60.h | 238 ------------
 include/netdev.h       |   2 -
 4 files changed, 1200 deletions(-)
 delete mode 100644 drivers/net/enc28j60.c
 delete mode 100644 drivers/net/enc28j60.h

diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index 4a16c62bac..f361c3cac1 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -23,7 +23,6 @@ obj-$(CONFIG_E1000_SPI) += e1000_spi.o
 obj-$(CONFIG_EEPRO100) += eepro100.o
 obj-$(CONFIG_SUN4I_EMAC) += sunxi_emac.o
 obj-$(CONFIG_SUN8I_EMAC) += sun8i_emac.o
-obj-$(CONFIG_ENC28J60) += enc28j60.o
 obj-$(CONFIG_EP93XX) += ep93xx_eth.o
 obj-$(CONFIG_ETHOC) += ethoc.o
 obj-$(CONFIG_FEC_MXC) += fec_mxc.o
diff --git a/drivers/net/enc28j60.c b/drivers/net/enc28j60.c
deleted file mode 100644
index 588a84d7a9..0000000000
--- a/drivers/net/enc28j60.c
+++ /dev/null
@@ -1,959 +0,0 @@
-/*
- * (C) Copyright 2010
- * Reinhard Meyer, EMK Elektronik, reinhard.meyer at emk-elektronik.de
- * Martin Krause, Martin.Krause at tqs.de
- * reworked original enc28j60.c
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <common.h>
-#include <net.h>
-#include <spi.h>
-#include <malloc.h>
-#include <netdev.h>
-#include <miiphy.h>
-#include "enc28j60.h"
-
-/*
- * IMPORTANT: spi_claim_bus() and spi_release_bus()
- * are called at begin and end of each of the following functions:
- * enc_miiphy_read(), enc_miiphy_write(), enc_write_hwaddr(),
- * enc_init(), enc_recv(), enc_send(), enc_halt()
- * ALL other functions assume that the bus has already been claimed!
- * Since net_process_received_packet() might call enc_send() in return, the bus
- * must be released, net_process_received_packet() called and claimed again.
- */
-
-/*
- * Controller memory layout.
- * We only allow 1 frame for transmission and reserve the rest
- * for reception to handle as many broadcast packets as possible.
- * Also use the memory from 0x0000 for receiver buffer. See errata pt. 5
- * 0x0000 - 0x19ff 6656 bytes receive buffer
- * 0x1a00 - 0x1fff 1536 bytes transmit buffer =
- * control(1)+frame(1518)+status(7)+reserve(10).
- */
-#define ENC_RX_BUF_START	0x0000
-#define ENC_RX_BUF_END		0x19ff
-#define ENC_TX_BUF_START	0x1a00
-#define ENC_TX_BUF_END		0x1fff
-#define ENC_MAX_FRM_LEN		1518
-#define RX_RESET_COUNTER	1000
-
-/*
- * For non data transfer functions, like phy read/write, set hwaddr, init
- * we do not need a full, time consuming init including link ready wait.
- * This enum helps to bring the chip through the minimum necessary inits.
- */
-enum enc_initstate {none=0, setupdone, linkready};
-typedef struct enc_device {
-	struct eth_device	*dev;	/* back pointer */
-	struct spi_slave	*slave;
-	int			rx_reset_counter;
-	u16			next_pointer;
-	u8			bank;	/* current bank in enc28j60 */
-	enum enc_initstate	initstate;
-} enc_dev_t;
-
-/*
- * enc_bset:		set bits in a common register
- * enc_bclr:		clear bits in a common register
- *
- * making the reg parameter u8 will give a compile time warning if the
- * functions are called with a register not accessible in all Banks
- */
-static void enc_bset(enc_dev_t *enc, const u8 reg, const u8 data)
-{
-	u8 dout[2];
-
-	dout[0] = CMD_BFS(reg);
-	dout[1] = data;
-	spi_xfer(enc->slave, 2 * 8, dout, NULL,
-		SPI_XFER_BEGIN | SPI_XFER_END);
-}
-
-static void enc_bclr(enc_dev_t *enc, const u8 reg, const u8 data)
-{
-	u8 dout[2];
-
-	dout[0] = CMD_BFC(reg);
-	dout[1] = data;
-	spi_xfer(enc->slave, 2 * 8, dout, NULL,
-		SPI_XFER_BEGIN | SPI_XFER_END);
-}
-
-/*
- * high byte of the register contains bank number:
- * 0: no bank switch necessary
- * 1: switch to bank 0
- * 2: switch to bank 1
- * 3: switch to bank 2
- * 4: switch to bank 3
- */
-static void enc_set_bank(enc_dev_t *enc, const u16 reg)
-{
-	u8 newbank = reg >> 8;
-
-	if (newbank == 0 || newbank == enc->bank)
-		return;
-	switch (newbank) {
-	case 1:
-		enc_bclr(enc, CTL_REG_ECON1,
-			ENC_ECON1_BSEL0 | ENC_ECON1_BSEL1);
-		break;
-	case 2:
-		enc_bset(enc, CTL_REG_ECON1, ENC_ECON1_BSEL0);
-		enc_bclr(enc, CTL_REG_ECON1, ENC_ECON1_BSEL1);
-		break;
-	case 3:
-		enc_bclr(enc, CTL_REG_ECON1, ENC_ECON1_BSEL0);
-		enc_bset(enc, CTL_REG_ECON1, ENC_ECON1_BSEL1);
-		break;
-	case 4:
-		enc_bset(enc, CTL_REG_ECON1,
-			ENC_ECON1_BSEL0 | ENC_ECON1_BSEL1);
-		break;
-	}
-	enc->bank = newbank;
-}
-
-/*
- * local functions to access SPI
- *
- * reg: register inside ENC28J60
- * data: 8/16 bits to write
- * c: number of retries
- *
- * enc_r8:		read 8 bits
- * enc_r16:		read 16 bits
- * enc_w8:		write 8 bits
- * enc_w16:		write 16 bits
- * enc_w8_retry:	write 8 bits, verify and retry
- * enc_rbuf:		read from ENC28J60 into buffer
- * enc_wbuf:		write from buffer into ENC28J60
- */
-
-/*
- * MAC and MII registers need a 3 byte SPI transfer to read,
- * all other registers need a 2 byte SPI transfer.
- */
-static int enc_reg2nbytes(const u16 reg)
-{
-	/* check if MAC or MII register */
-	return ((reg >= CTL_REG_MACON1 && reg <= CTL_REG_MIRDH) ||
-		(reg >= CTL_REG_MAADR1 && reg <= CTL_REG_MAADR4) ||
-		(reg == CTL_REG_MISTAT)) ? 3 : 2;
-}
-
-/*
- * Read a byte register
- */
-static u8 enc_r8(enc_dev_t *enc, const u16 reg)
-{
-	u8 dout[3];
-	u8 din[3];
-	int nbytes = enc_reg2nbytes(reg);
-
-	enc_set_bank(enc, reg);
-	dout[0] = CMD_RCR(reg);
-	spi_xfer(enc->slave, nbytes * 8, dout, din,
-		SPI_XFER_BEGIN | SPI_XFER_END);
-	return din[nbytes-1];
-}
-
-/*
- * Read a L/H register pair and return a word.
- * Must be called with the L register's address.
- */
-static u16 enc_r16(enc_dev_t *enc, const u16 reg)
-{
-	u8 dout[3];
-	u8 din[3];
-	u16 result;
-	int nbytes = enc_reg2nbytes(reg);
-
-	enc_set_bank(enc, reg);
-	dout[0] = CMD_RCR(reg);
-	spi_xfer(enc->slave, nbytes * 8, dout, din,
-		SPI_XFER_BEGIN | SPI_XFER_END);
-	result = din[nbytes-1];
-	dout[0]++; /* next register */
-	spi_xfer(enc->slave, nbytes * 8, dout, din,
-		SPI_XFER_BEGIN | SPI_XFER_END);
-	result |= din[nbytes-1] << 8;
-	return result;
-}
-
-/*
- * Write a byte register
- */
-static void enc_w8(enc_dev_t *enc, const u16 reg, const u8 data)
-{
-	u8 dout[2];
-
-	enc_set_bank(enc, reg);
-	dout[0] = CMD_WCR(reg);
-	dout[1] = data;
-	spi_xfer(enc->slave, 2 * 8, dout, NULL,
-		SPI_XFER_BEGIN | SPI_XFER_END);
-}
-
-/*
- * Write a L/H register pair.
- * Must be called with the L register's address.
- */
-static void enc_w16(enc_dev_t *enc, const u16 reg, const u16 data)
-{
-	u8 dout[2];
-
-	enc_set_bank(enc, reg);
-	dout[0] = CMD_WCR(reg);
-	dout[1] = data;
-	spi_xfer(enc->slave, 2 * 8, dout, NULL,
-		SPI_XFER_BEGIN | SPI_XFER_END);
-	dout[0]++; /* next register */
-	dout[1] = data >> 8;
-	spi_xfer(enc->slave, 2 * 8, dout, NULL,
-		SPI_XFER_BEGIN | SPI_XFER_END);
-}
-
-/*
- * Write a byte register, verify and retry
- */
-static void enc_w8_retry(enc_dev_t *enc, const u16 reg, const u8 data, const int c)
-{
-	u8 dout[2];
-	u8 readback;
-	int i;
-
-	enc_set_bank(enc, reg);
-	for (i = 0; i < c; i++) {
-		dout[0] = CMD_WCR(reg);
-		dout[1] = data;
-		spi_xfer(enc->slave, 2 * 8, dout, NULL,
-			SPI_XFER_BEGIN | SPI_XFER_END);
-		readback = enc_r8(enc, reg);
-		if (readback == data)
-			break;
-		/* wait 1ms */
-		udelay(1000);
-	}
-	if (i == c) {
-		printf("%s: write reg 0x%03x failed\n", enc->dev->name, reg);
-	}
-}
-
-/*
- * Read ENC RAM into buffer
- */
-static void enc_rbuf(enc_dev_t *enc, const u16 length, u8 *buf)
-{
-	u8 dout[1];
-
-	dout[0] = CMD_RBM;
-	spi_xfer(enc->slave, 8, dout, NULL, SPI_XFER_BEGIN);
-	spi_xfer(enc->slave, length * 8, NULL, buf, SPI_XFER_END);
-#ifdef DEBUG
-	puts("Rx:\n");
-	print_buffer(0, buf, 1, length, 0);
-#endif
-}
-
-/*
- * Write buffer into ENC RAM
- */
-static void enc_wbuf(enc_dev_t *enc, const u16 length, const u8 *buf, const u8 control)
-{
-	u8 dout[2];
-	dout[0] = CMD_WBM;
-	dout[1] = control;
-	spi_xfer(enc->slave, 2 * 8, dout, NULL, SPI_XFER_BEGIN);
-	spi_xfer(enc->slave, length * 8, buf, NULL, SPI_XFER_END);
-#ifdef DEBUG
-	puts("Tx:\n");
-	print_buffer(0, buf, 1, length, 0);
-#endif
-}
-
-/*
- * Try to claim the SPI bus.
- * Print error message on failure.
- */
-static int enc_claim_bus(enc_dev_t *enc)
-{
-	int rc = spi_claim_bus(enc->slave);
-	if (rc)
-		printf("%s: failed to claim SPI bus\n", enc->dev->name);
-	return rc;
-}
-
-/*
- * Release previously claimed SPI bus.
- * This function is mainly for symmetry to enc_claim_bus().
- * Let the toolchain decide to inline it...
- */
-static void enc_release_bus(enc_dev_t *enc)
-{
-	spi_release_bus(enc->slave);
-}
-
-/*
- * Read PHY register
- */
-static u16 enc_phy_read(enc_dev_t *enc, const u8 addr)
-{
-	uint64_t etime;
-	u8 status;
-
-	enc_w8(enc, CTL_REG_MIREGADR, addr);
-	enc_w8(enc, CTL_REG_MICMD, ENC_MICMD_MIIRD);
-	/* 1 second timeout - only happens on hardware problem */
-	etime = get_ticks() + get_tbclk();
-	/* poll MISTAT.BUSY bit until operation is complete */
-	do
-	{
-		status = enc_r8(enc, CTL_REG_MISTAT);
-	} while (get_ticks() <= etime && (status & ENC_MISTAT_BUSY));
-	if (status & ENC_MISTAT_BUSY) {
-		printf("%s: timeout reading phy\n", enc->dev->name);
-		return 0;
-	}
-	enc_w8(enc, CTL_REG_MICMD, 0);
-	return enc_r16(enc, CTL_REG_MIRDL);
-}
-
-/*
- * Write PHY register
- */
-static void enc_phy_write(enc_dev_t *enc, const u8 addr, const u16 data)
-{
-	uint64_t etime;
-	u8 status;
-
-	enc_w8(enc, CTL_REG_MIREGADR, addr);
-	enc_w16(enc, CTL_REG_MIWRL, data);
-	/* 1 second timeout - only happens on hardware problem */
-	etime = get_ticks() + get_tbclk();
-	/* poll MISTAT.BUSY bit until operation is complete */
-	do
-	{
-		status = enc_r8(enc, CTL_REG_MISTAT);
-	} while (get_ticks() <= etime && (status & ENC_MISTAT_BUSY));
-	if (status & ENC_MISTAT_BUSY) {
-		printf("%s: timeout writing phy\n", enc->dev->name);
-		return;
-	}
-}
-
-/*
- * Verify link status, wait if necessary
- *
- * Note: with a 10 MBit/s only PHY there is no autonegotiation possible,
- * half/full duplex is a pure setup matter. For the time being, this driver
- * will setup in half duplex mode only.
- */
-static int enc_phy_link_wait(enc_dev_t *enc)
-{
-	u16 status;
-	int duplex;
-	uint64_t etime;
-
-#ifdef CONFIG_ENC_SILENTLINK
-	/* check if we have a link, then just return */
-	status = enc_phy_read(enc, PHY_REG_PHSTAT1);
-	if (status & ENC_PHSTAT1_LLSTAT)
-		return 0;
-#endif
-
-	/* wait for link with 1 second timeout */
-	etime = get_ticks() + get_tbclk();
-	while (get_ticks() <= etime) {
-		status = enc_phy_read(enc, PHY_REG_PHSTAT1);
-		if (status & ENC_PHSTAT1_LLSTAT) {
-			/* now we have a link */
-			status = enc_phy_read(enc, PHY_REG_PHSTAT2);
-			duplex = (status & ENC_PHSTAT2_DPXSTAT) ? 1 : 0;
-			printf("%s: link up, 10Mbps %s-duplex\n",
-				enc->dev->name, duplex ? "full" : "half");
-			return 0;
-		}
-		udelay(1000);
-	}
-
-	/* timeout occurred */
-	printf("%s: link down\n", enc->dev->name);
-	return 1;
-}
-
-/*
- * This function resets the receiver only.
- */
-static void enc_reset_rx(enc_dev_t *enc)
-{
-	u8 econ1;
-
-	econ1 = enc_r8(enc, CTL_REG_ECON1);
-	if ((econ1 & ENC_ECON1_RXRST) == 0) {
-		enc_bset(enc, CTL_REG_ECON1, ENC_ECON1_RXRST);
-		enc->rx_reset_counter = RX_RESET_COUNTER;
-	}
-}
-
-/*
- * Reset receiver and reenable it.
- */
-static void enc_reset_rx_call(enc_dev_t *enc)
-{
-	enc_bclr(enc, CTL_REG_ECON1, ENC_ECON1_RXRST);
-	enc_bset(enc, CTL_REG_ECON1, ENC_ECON1_RXEN);
-}
-
-/*
- * Copy a packet from the receive ring and forward it to
- * the protocol stack.
- */
-static void enc_receive(enc_dev_t *enc)
-{
-	u8 *packet = (u8 *)net_rx_packets[0];
-	u16 pkt_len;
-	u16 copy_len;
-	u16 status;
-	u8 pkt_cnt = 0;
-	u16 rxbuf_rdpt;
-	u8 hbuf[6];
-
-	enc_w16(enc, CTL_REG_ERDPTL, enc->next_pointer);
-	do {
-		enc_rbuf(enc, 6, hbuf);
-		enc->next_pointer = hbuf[0] | (hbuf[1] << 8);
-		pkt_len = hbuf[2] | (hbuf[3] << 8);
-		status = hbuf[4] | (hbuf[5] << 8);
-		debug("next_pointer=$%04x pkt_len=%u status=$%04x\n",
-			enc->next_pointer, pkt_len, status);
-		if (pkt_len <= ENC_MAX_FRM_LEN)
-			copy_len = pkt_len;
-		else
-			copy_len = 0;
-		if ((status & (1L << 7)) == 0) /* check Received Ok bit */
-			copy_len = 0;
-		/* check if next pointer is resonable */
-		if (enc->next_pointer >= ENC_TX_BUF_START)
-			copy_len = 0;
-		if (copy_len > 0) {
-			enc_rbuf(enc, copy_len, packet);
-		}
-		/* advance read pointer to next pointer */
-		enc_w16(enc, CTL_REG_ERDPTL, enc->next_pointer);
-		/* decrease packet counter */
-		enc_bset(enc, CTL_REG_ECON2, ENC_ECON2_PKTDEC);
-		/*
-		 * Only odd values should be written to ERXRDPTL,
-		 * see errata B4 pt.13
-		 */
-		rxbuf_rdpt = enc->next_pointer - 1;
-		if ((rxbuf_rdpt < enc_r16(enc, CTL_REG_ERXSTL)) ||
-			(rxbuf_rdpt > enc_r16(enc, CTL_REG_ERXNDL))) {
-			enc_w16(enc, CTL_REG_ERXRDPTL,
-				enc_r16(enc, CTL_REG_ERXNDL));
-		} else {
-			enc_w16(enc, CTL_REG_ERXRDPTL, rxbuf_rdpt);
-		}
-		/* read pktcnt */
-		pkt_cnt = enc_r8(enc, CTL_REG_EPKTCNT);
-		if (copy_len == 0) {
-			(void)enc_r8(enc, CTL_REG_EIR);
-			enc_reset_rx(enc);
-			printf("%s: receive copy_len=0\n", enc->dev->name);
-			continue;
-		}
-		/*
-		 * Because net_process_received_packet() might call enc_send(),
-		 * we need to release the SPI bus, call
-		 * net_process_received_packet(), reclaim the bus.
-		 */
-		enc_release_bus(enc);
-		net_process_received_packet(packet, pkt_len);
-		if (enc_claim_bus(enc))
-			return;
-		(void)enc_r8(enc, CTL_REG_EIR);
-	} while (pkt_cnt);
-	/* Use EPKTCNT not EIR.PKTIF flag, see errata pt. 6 */
-}
-
-/*
- * Poll for completely received packets.
- */
-static void enc_poll(enc_dev_t *enc)
-{
-	u8 eir_reg;
-	u8 pkt_cnt;
-
-	(void)enc_r8(enc, CTL_REG_ESTAT);
-	eir_reg = enc_r8(enc, CTL_REG_EIR);
-	if (eir_reg & ENC_EIR_TXIF) {
-		/* clear TXIF bit in EIR */
-		enc_bclr(enc, CTL_REG_EIR, ENC_EIR_TXIF);
-	}
-	/* We have to use pktcnt and not pktif bit, see errata pt. 6 */
-	pkt_cnt = enc_r8(enc, CTL_REG_EPKTCNT);
-	if (pkt_cnt > 0) {
-		if ((eir_reg & ENC_EIR_PKTIF) == 0) {
-			debug("enc_poll: pkt cnt > 0, but pktif not set\n");
-		}
-		enc_receive(enc);
-		/*
-		 * clear PKTIF bit in EIR, this should not need to be done
-		 * but it seems like we get problems if we do not
-		 */
-		enc_bclr(enc, CTL_REG_EIR, ENC_EIR_PKTIF);
-	}
-	if (eir_reg & ENC_EIR_RXERIF) {
-		printf("%s: rx error\n", enc->dev->name);
-		enc_bclr(enc, CTL_REG_EIR, ENC_EIR_RXERIF);
-	}
-	if (eir_reg & ENC_EIR_TXERIF) {
-		printf("%s: tx error\n", enc->dev->name);
-		enc_bclr(enc, CTL_REG_EIR, ENC_EIR_TXERIF);
-	}
-}
-
-/*
- * Completely Reset the ENC
- */
-static void enc_reset(enc_dev_t *enc)
-{
-	u8 dout[1];
-
-	dout[0] = CMD_SRC;
-	spi_xfer(enc->slave, 8, dout, NULL,
-		SPI_XFER_BEGIN | SPI_XFER_END);
-	/* sleep 1 ms. See errata pt. 2 */
-	udelay(1000);
-}
-
-/*
- * Initialisation data for most of the ENC registers
- */
-static const u16 enc_initdata[] = {
-	/*
-	 * Setup the buffer space. The reset values are valid for the
-	 * other pointers.
-	 *
-	 * We shall not write to ERXST, see errata pt. 5. Instead we
-	 * have to make sure that ENC_RX_BUS_START is 0.
-	 */
-	CTL_REG_ERXSTL, ENC_RX_BUF_START,
-	CTL_REG_ERXSTH, ENC_RX_BUF_START >> 8,
-	CTL_REG_ERXNDL, ENC_RX_BUF_END,
-	CTL_REG_ERXNDH, ENC_RX_BUF_END >> 8,
-	CTL_REG_ERDPTL, ENC_RX_BUF_START,
-	CTL_REG_ERDPTH, ENC_RX_BUF_START >> 8,
-	/*
-	 * Set the filter to receive only good-CRC, unicast and broadcast
-	 * frames.
-	 * Note: some DHCP servers return their answers as broadcasts!
-	 * So its unwise to remove broadcast from this. This driver
-	 * might incur receiver overruns with packet loss on a broadcast
-	 * flooded network.
-	 */
-	CTL_REG_ERXFCON, ENC_RFR_BCEN | ENC_RFR_UCEN | ENC_RFR_CRCEN,
-
-	/* enable MAC to receive frames */
-	CTL_REG_MACON1,
-		ENC_MACON1_MARXEN | ENC_MACON1_TXPAUS | ENC_MACON1_RXPAUS,
-
-	/* configure pad, tx-crc and duplex */
-	CTL_REG_MACON3,
-		ENC_MACON3_PADCFG0 | ENC_MACON3_TXCRCEN |
-		ENC_MACON3_FRMLNEN,
-
-	/* Allow infinite deferals if the medium is continously busy */
-	CTL_REG_MACON4, ENC_MACON4_DEFER,
-
-	/* Late collisions occur beyond 63 bytes */
-	CTL_REG_MACLCON2, 63,
-
-	/*
-	 * Set (low byte) Non-Back-to_Back Inter-Packet Gap.
-	 * Recommended 0x12
-	 */
-	CTL_REG_MAIPGL, 0x12,
-
-	/*
-	 * Set (high byte) Non-Back-to_Back Inter-Packet Gap.
-	 * Recommended 0x0c for half-duplex. Nothing for full-duplex
-	 */
-	CTL_REG_MAIPGH, 0x0C,
-
-	/* set maximum frame length */
-	CTL_REG_MAMXFLL, ENC_MAX_FRM_LEN,
-	CTL_REG_MAMXFLH, ENC_MAX_FRM_LEN >> 8,
-
-	/*
-	 * Set MAC back-to-back inter-packet gap.
-	 * Recommended 0x12 for half duplex
-	 * and 0x15 for full duplex.
-	 */
-	CTL_REG_MABBIPG, 0x12,
-
-	/* end of table */
-	0xffff
-};
-
-/*
- * Wait for the XTAL oscillator to become ready
- */
-static int enc_clock_wait(enc_dev_t *enc)
-{
-	uint64_t etime;
-
-	/* one second timeout */
-	etime = get_ticks() + get_tbclk();
-
-	/*
-	 * Wait for CLKRDY to become set (i.e., check that we can
-	 * communicate with the ENC)
-	 */
-	do
-	{
-		if (enc_r8(enc, CTL_REG_ESTAT) & ENC_ESTAT_CLKRDY)
-			return 0;
-	} while (get_ticks() <= etime);
-
-	printf("%s: timeout waiting for CLKRDY\n", enc->dev->name);
-	return -1;
-}
-
-/*
- * Write the MAC address into the ENC
- */
-static int enc_write_macaddr(enc_dev_t *enc)
-{
-	unsigned char *p = enc->dev->enetaddr;
-
-	enc_w8_retry(enc, CTL_REG_MAADR5, *p++, 5);
-	enc_w8_retry(enc, CTL_REG_MAADR4, *p++, 5);
-	enc_w8_retry(enc, CTL_REG_MAADR3, *p++, 5);
-	enc_w8_retry(enc, CTL_REG_MAADR2, *p++, 5);
-	enc_w8_retry(enc, CTL_REG_MAADR1, *p++, 5);
-	enc_w8_retry(enc, CTL_REG_MAADR0, *p, 5);
-	return 0;
-}
-
-/*
- * Setup most of the ENC registers
- */
-static int enc_setup(enc_dev_t *enc)
-{
-	u16 phid1 = 0;
-	u16 phid2 = 0;
-	const u16 *tp;
-
-	/* reset enc struct values */
-	enc->next_pointer = ENC_RX_BUF_START;
-	enc->rx_reset_counter = RX_RESET_COUNTER;
-	enc->bank = 0xff;	/* invalidate current bank in enc28j60 */
-
-	/* verify PHY identification */
-	phid1 = enc_phy_read(enc, PHY_REG_PHID1);
-	phid2 = enc_phy_read(enc, PHY_REG_PHID2) & ENC_PHID2_MASK;
-	if (phid1 != ENC_PHID1_VALUE || phid2 != ENC_PHID2_VALUE) {
-		printf("%s: failed to identify PHY. Found %04x:%04x\n",
-			enc->dev->name, phid1, phid2);
-		return -1;
-	}
-
-	/* now program registers */
-	for (tp = enc_initdata; *tp != 0xffff; tp += 2)
-		enc_w8_retry(enc, tp[0], tp[1], 10);
-
-	/*
-	 * Prevent automatic loopback of data beeing transmitted by setting
-	 * ENC_PHCON2_HDLDIS
-	 */
-	enc_phy_write(enc, PHY_REG_PHCON2, (1<<8));
-
-	/*
-	 * LEDs configuration
-	 * LEDA: LACFG = 0100 -> display link status
-	 * LEDB: LBCFG = 0111 -> display TX & RX activity
-	 * STRCH = 1 -> LED pulses
-	 */
-	enc_phy_write(enc, PHY_REG_PHLCON, 0x0472);
-
-	/* Reset PDPXMD-bit => half duplex */
-	enc_phy_write(enc, PHY_REG_PHCON1, 0);
-
-	return 0;
-}
-
-/*
- * Check if ENC has been initialized.
- * If not, try to initialize it.
- * Remember initialized state in struct.
- */
-static int enc_initcheck(enc_dev_t *enc, const enum enc_initstate requiredstate)
-{
-	if (enc->initstate >= requiredstate)
-		return 0;
-
-	if (enc->initstate < setupdone) {
-		/* Initialize the ENC only */
-		enc_reset(enc);
-		/* if any of functions fails, skip the rest and return an error */
-		if (enc_clock_wait(enc) || enc_setup(enc) || enc_write_macaddr(enc)) {
-			return -1;
-		}
-		enc->initstate = setupdone;
-	}
-	/* if that's all we need, return here */
-	if (enc->initstate >= requiredstate)
-		return 0;
-
-	/* now wait for link ready condition */
-	if (enc_phy_link_wait(enc)) {
-		return -1;
-	}
-	enc->initstate = linkready;
-	return 0;
-}
-
-#if defined(CONFIG_CMD_MII)
-/*
- * Read a PHY register.
- *
- * This function is registered with miiphy_register().
- */
-int enc_miiphy_read(struct mii_dev *bus, int phy_adr, int devad, int reg)
-{
-	u16 value = 0;
-	struct eth_device *dev = eth_get_dev_by_name(bus->name);
-	enc_dev_t *enc;
-
-	if (!dev || phy_adr != 0)
-		return -1;
-
-	enc = dev->priv;
-	if (enc_claim_bus(enc))
-		return -1;
-	if (enc_initcheck(enc, setupdone)) {
-		enc_release_bus(enc);
-		return -1;
-	}
-	value = enc_phy_read(enc, reg);
-	enc_release_bus(enc);
-	return value;
-}
-
-/*
- * Write a PHY register.
- *
- * This function is registered with miiphy_register().
- */
-int enc_miiphy_write(struct mii_dev *bus, int phy_adr, int devad, int reg,
-		     u16 value)
-{
-	struct eth_device *dev = eth_get_dev_by_name(bus->name);
-	enc_dev_t *enc;
-
-	if (!dev || phy_adr != 0)
-		return -1;
-
-	enc = dev->priv;
-	if (enc_claim_bus(enc))
-		return -1;
-	if (enc_initcheck(enc, setupdone)) {
-		enc_release_bus(enc);
-		return -1;
-	}
-	enc_phy_write(enc, reg, value);
-	enc_release_bus(enc);
-	return 0;
-}
-#endif
-
-/*
- * Write hardware (MAC) address.
- *
- * This function entered into eth_device structure.
- */
-static int enc_write_hwaddr(struct eth_device *dev)
-{
-	enc_dev_t *enc = dev->priv;
-
-	if (enc_claim_bus(enc))
-		return -1;
-	if (enc_initcheck(enc, setupdone)) {
-		enc_release_bus(enc);
-		return -1;
-	}
-	enc_release_bus(enc);
-	return 0;
-}
-
-/*
- * Initialize ENC28J60 for use.
- *
- * This function entered into eth_device structure.
- */
-static int enc_init(struct eth_device *dev, bd_t *bis)
-{
-	enc_dev_t *enc = dev->priv;
-
-	if (enc_claim_bus(enc))
-		return -1;
-	if (enc_initcheck(enc, linkready)) {
-		enc_release_bus(enc);
-		return -1;
-	}
-	/* enable receive */
-	enc_bset(enc, CTL_REG_ECON1, ENC_ECON1_RXEN);
-	enc_release_bus(enc);
-	return 0;
-}
-
-/*
- * Check for received packets.
- *
- * This function entered into eth_device structure.
- */
-static int enc_recv(struct eth_device *dev)
-{
-	enc_dev_t *enc = dev->priv;
-
-	if (enc_claim_bus(enc))
-		return -1;
-	if (enc_initcheck(enc, linkready)) {
-		enc_release_bus(enc);
-		return -1;
-	}
-	/* Check for dead receiver */
-	if (enc->rx_reset_counter > 0)
-		enc->rx_reset_counter--;
-	else
-		enc_reset_rx_call(enc);
-	enc_poll(enc);
-	enc_release_bus(enc);
-	return 0;
-}
-
-/*
- * Send a packet.
- *
- * This function entered into eth_device structure.
- *
- * Should we wait here until we have a Link? Or shall we leave that to
- * protocol retries?
- */
-static int enc_send(
-	struct eth_device *dev,
-	void *packet,
-	int length)
-{
-	enc_dev_t *enc = dev->priv;
-
-	if (enc_claim_bus(enc))
-		return -1;
-	if (enc_initcheck(enc, linkready)) {
-		enc_release_bus(enc);
-		return -1;
-	}
-	/* setup transmit pointers */
-	enc_w16(enc, CTL_REG_EWRPTL, ENC_TX_BUF_START);
-	enc_w16(enc, CTL_REG_ETXNDL, length + ENC_TX_BUF_START);
-	enc_w16(enc, CTL_REG_ETXSTL, ENC_TX_BUF_START);
-	/* write packet to ENC */
-	enc_wbuf(enc, length, (u8 *) packet, 0x00);
-	/*
-	 * Check that the internal transmit logic has not been altered
-	 * by excessive collisions. Reset transmitter if so.
-	 * See Errata B4 12 and 14.
-	 */
-	if (enc_r8(enc, CTL_REG_EIR) & ENC_EIR_TXERIF) {
-		enc_bset(enc, CTL_REG_ECON1, ENC_ECON1_TXRST);
-		enc_bclr(enc, CTL_REG_ECON1, ENC_ECON1_TXRST);
-	}
-	enc_bclr(enc, CTL_REG_EIR, (ENC_EIR_TXERIF | ENC_EIR_TXIF));
-	/* start transmitting */
-	enc_bset(enc, CTL_REG_ECON1, ENC_ECON1_TXRTS);
-	enc_release_bus(enc);
-	return 0;
-}
-
-/*
- * Finish use of ENC.
- *
- * This function entered into eth_device structure.
- */
-static void enc_halt(struct eth_device *dev)
-{
-	enc_dev_t *enc = dev->priv;
-
-	if (enc_claim_bus(enc))
-		return;
-	/* Just disable receiver */
-	enc_bclr(enc, CTL_REG_ECON1, ENC_ECON1_RXEN);
-	enc_release_bus(enc);
-}
-
-/*
- * This is the only exported function.
- *
- * It may be called several times with different bus:cs combinations.
- */
-int enc28j60_initialize(unsigned int bus, unsigned int cs,
-	unsigned int max_hz, unsigned int mode)
-{
-	struct eth_device *dev;
-	enc_dev_t *enc;
-
-	/* try to allocate, check and clear eth_device object */
-	dev = malloc(sizeof(*dev));
-	if (!dev) {
-		return -1;
-	}
-	memset(dev, 0, sizeof(*dev));
-
-	/* try to allocate, check and clear enc_dev_t object */
-	enc = malloc(sizeof(*enc));
-	if (!enc) {
-		free(dev);
-		return -1;
-	}
-	memset(enc, 0, sizeof(*enc));
-
-	/* try to setup the SPI slave */
-	enc->slave = spi_setup_slave(bus, cs, max_hz, mode);
-	if (!enc->slave) {
-		printf("enc28j60: invalid SPI device %i:%i\n", bus, cs);
-		free(enc);
-		free(dev);
-		return -1;
-	}
-
-	enc->dev = dev;
-	/* now fill the eth_device object */
-	dev->priv = enc;
-	dev->init = enc_init;
-	dev->halt = enc_halt;
-	dev->send = enc_send;
-	dev->recv = enc_recv;
-	dev->write_hwaddr = enc_write_hwaddr;
-	sprintf(dev->name, "enc%i.%i", bus, cs);
-	eth_register(dev);
-#if defined(CONFIG_CMD_MII)
-	int retval;
-	struct mii_dev *mdiodev = mdio_alloc();
-	if (!mdiodev)
-		return -ENOMEM;
-	strncpy(mdiodev->name, dev->name, MDIO_NAME_LEN);
-	mdiodev->read = enc_miiphy_read;
-	mdiodev->write = enc_miiphy_write;
-
-	retval = mdio_register(mdiodev);
-	if (retval < 0)
-		return retval;
-#endif
-	return 0;
-}
diff --git a/drivers/net/enc28j60.h b/drivers/net/enc28j60.h
deleted file mode 100644
index 289e41288e..0000000000
--- a/drivers/net/enc28j60.h
+++ /dev/null
@@ -1,238 +0,0 @@
-/*
- * (X) extracted from enc28j60.c
- * Reinhard Meyer, EMK Elektronik, reinhard.meyer@emk-elektronik.de
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#ifndef _enc28j60_h
-#define _enc28j60_h
-
-/*
- * SPI Commands
- *
- * Bits 7-5: Command
- * Bits 4-0: Register
- */
-#define CMD_RCR(x)	(0x00+((x)&0x1f))	/* Read Control Register */
-#define CMD_RBM		0x3a			/* Read Buffer Memory */
-#define CMD_WCR(x)	(0x40+((x)&0x1f))	/* Write Control Register */
-#define CMD_WBM		0x7a			/* Write Buffer Memory */
-#define CMD_BFS(x)	(0x80+((x)&0x1f))	/* Bit Field Set */
-#define CMD_BFC(x)	(0xa0+((x)&0x1f))	/* Bit Field Clear */
-#define CMD_SRC		0xff			/* System Reset Command */
-
-/* NEW: encode (bank number+1) in upper byte */
-
-/* Common Control Registers accessible in all Banks */
-#define CTL_REG_EIE		0x01B
-#define CTL_REG_EIR		0x01C
-#define CTL_REG_ESTAT		0x01D
-#define CTL_REG_ECON2		0x01E
-#define CTL_REG_ECON1		0x01F
-
-/* Control Registers accessible in Bank 0 */
-#define CTL_REG_ERDPTL		0x100
-#define CTL_REG_ERDPTH		0x101
-#define CTL_REG_EWRPTL		0x102
-#define CTL_REG_EWRPTH		0x103
-#define CTL_REG_ETXSTL		0x104
-#define CTL_REG_ETXSTH		0x105
-#define CTL_REG_ETXNDL		0x106
-#define CTL_REG_ETXNDH		0x107
-#define CTL_REG_ERXSTL		0x108
-#define CTL_REG_ERXSTH		0x109
-#define CTL_REG_ERXNDL		0x10A
-#define CTL_REG_ERXNDH		0x10B
-#define CTL_REG_ERXRDPTL	0x10C
-#define CTL_REG_ERXRDPTH	0x10D
-#define CTL_REG_ERXWRPTL	0x10E
-#define CTL_REG_ERXWRPTH	0x10F
-#define CTL_REG_EDMASTL		0x110
-#define CTL_REG_EDMASTH		0x111
-#define CTL_REG_EDMANDL		0x112
-#define CTL_REG_EDMANDH		0x113
-#define CTL_REG_EDMADSTL	0x114
-#define CTL_REG_EDMADSTH	0x115
-#define CTL_REG_EDMACSL		0x116
-#define CTL_REG_EDMACSH		0x117
-
-/* Control Registers accessible in Bank 1 */
-#define CTL_REG_EHT0		0x200
-#define CTL_REG_EHT1		0x201
-#define CTL_REG_EHT2		0x202
-#define CTL_REG_EHT3		0x203
-#define CTL_REG_EHT4		0x204
-#define CTL_REG_EHT5		0x205
-#define CTL_REG_EHT6		0x206
-#define CTL_REG_EHT7		0x207
-#define CTL_REG_EPMM0		0x208
-#define CTL_REG_EPMM1		0x209
-#define CTL_REG_EPMM2		0x20A
-#define CTL_REG_EPMM3		0x20B
-#define CTL_REG_EPMM4		0x20C
-#define CTL_REG_EPMM5		0x20D
-#define CTL_REG_EPMM6		0x20E
-#define CTL_REG_EPMM7		0x20F
-#define CTL_REG_EPMCSL		0x210
-#define CTL_REG_EPMCSH		0x211
-#define CTL_REG_EPMOL		0x214
-#define CTL_REG_EPMOH		0x215
-#define CTL_REG_EWOLIE		0x216
-#define CTL_REG_EWOLIR		0x217
-#define CTL_REG_ERXFCON		0x218
-#define CTL_REG_EPKTCNT		0x219
-
-/* Control Registers accessible in Bank 2 */
-#define CTL_REG_MACON1		0x300
-#define CTL_REG_MACON2		0x301
-#define CTL_REG_MACON3		0x302
-#define CTL_REG_MACON4		0x303
-#define CTL_REG_MABBIPG		0x304
-#define CTL_REG_MAIPGL		0x306
-#define CTL_REG_MAIPGH		0x307
-#define CTL_REG_MACLCON1	0x308
-#define CTL_REG_MACLCON2	0x309
-#define CTL_REG_MAMXFLL		0x30A
-#define CTL_REG_MAMXFLH		0x30B
-#define CTL_REG_MAPHSUP		0x30D
-#define CTL_REG_MICON		0x311
-#define CTL_REG_MICMD		0x312
-#define CTL_REG_MIREGADR	0x314
-#define CTL_REG_MIWRL		0x316
-#define CTL_REG_MIWRH		0x317
-#define CTL_REG_MIRDL		0x318
-#define CTL_REG_MIRDH		0x319
-
-/* Control Registers accessible in Bank 3 */
-#define CTL_REG_MAADR1		0x400
-#define CTL_REG_MAADR0		0x401
-#define CTL_REG_MAADR3		0x402
-#define CTL_REG_MAADR2		0x403
-#define CTL_REG_MAADR5		0x404
-#define CTL_REG_MAADR4		0x405
-#define CTL_REG_EBSTSD		0x406
-#define CTL_REG_EBSTCON		0x407
-#define CTL_REG_EBSTCSL		0x408
-#define CTL_REG_EBSTCSH		0x409
-#define CTL_REG_MISTAT		0x40A
-#define CTL_REG_EREVID		0x412
-#define CTL_REG_ECOCON		0x415
-#define CTL_REG_EFLOCON		0x417
-#define CTL_REG_EPAUSL		0x418
-#define CTL_REG_EPAUSH		0x419
-
-/* PHY Register */
-#define PHY_REG_PHCON1		0x00
-#define PHY_REG_PHSTAT1		0x01
-#define PHY_REG_PHID1		0x02
-#define PHY_REG_PHID2		0x03
-#define PHY_REG_PHCON2		0x10
-#define PHY_REG_PHSTAT2		0x11
-#define PHY_REG_PHLCON		0x14
-
-/* Receive Filter Register (ERXFCON) bits */
-#define ENC_RFR_UCEN		0x80
-#define ENC_RFR_ANDOR		0x40
-#define ENC_RFR_CRCEN		0x20
-#define ENC_RFR_PMEN		0x10
-#define ENC_RFR_MPEN		0x08
-#define ENC_RFR_HTEN		0x04
-#define ENC_RFR_MCEN		0x02
-#define ENC_RFR_BCEN		0x01
-
-/* ECON1 Register Bits */
-#define ENC_ECON1_TXRST		0x80
-#define ENC_ECON1_RXRST		0x40
-#define ENC_ECON1_DMAST		0x20
-#define ENC_ECON1_CSUMEN	0x10
-#define ENC_ECON1_TXRTS		0x08
-#define ENC_ECON1_RXEN		0x04
-#define ENC_ECON1_BSEL1		0x02
-#define ENC_ECON1_BSEL0		0x01
-
-/* ECON2 Register Bits */
-#define ENC_ECON2_AUTOINC	0x80
-#define ENC_ECON2_PKTDEC	0x40
-#define ENC_ECON2_PWRSV		0x20
-#define ENC_ECON2_VRPS		0x08
-
-/* EIR Register Bits */
-#define ENC_EIR_PKTIF		0x40
-#define ENC_EIR_DMAIF		0x20
-#define ENC_EIR_LINKIF		0x10
-#define ENC_EIR_TXIF		0x08
-#define ENC_EIR_WOLIF		0x04
-#define ENC_EIR_TXERIF		0x02
-#define ENC_EIR_RXERIF		0x01
-
-/* ESTAT Register Bits */
-#define ENC_ESTAT_INT		0x80
-#define ENC_ESTAT_LATECOL	0x10
-#define ENC_ESTAT_RXBUSY	0x04
-#define ENC_ESTAT_TXABRT	0x02
-#define ENC_ESTAT_CLKRDY	0x01
-
-/* EIE Register Bits */
-#define ENC_EIE_INTIE		0x80
-#define ENC_EIE_PKTIE		0x40
-#define ENC_EIE_DMAIE		0x20
-#define ENC_EIE_LINKIE		0x10
-#define ENC_EIE_TXIE		0x08
-#define ENC_EIE_WOLIE		0x04
-#define ENC_EIE_TXERIE		0x02
-#define ENC_EIE_RXERIE		0x01
-
-/* MACON1 Register Bits */
-#define ENC_MACON1_LOOPBK	0x10
-#define ENC_MACON1_TXPAUS	0x08
-#define ENC_MACON1_RXPAUS	0x04
-#define ENC_MACON1_PASSALL	0x02
-#define ENC_MACON1_MARXEN	0x01
-
-/* MACON2 Register Bits */
-#define ENC_MACON2_MARST	0x80
-#define ENC_MACON2_RNDRST	0x40
-#define ENC_MACON2_MARXRST	0x08
-#define ENC_MACON2_RFUNRST	0x04
-#define ENC_MACON2_MATXRST	0x02
-#define ENC_MACON2_TFUNRST	0x01
-
-/* MACON3 Register Bits */
-#define ENC_MACON3_PADCFG2	0x80
-#define ENC_MACON3_PADCFG1	0x40
-#define ENC_MACON3_PADCFG0	0x20
-#define ENC_MACON3_TXCRCEN	0x10
-#define ENC_MACON3_PHDRLEN	0x08
-#define ENC_MACON3_HFRMEN	0x04
-#define ENC_MACON3_FRMLNEN	0x02
-#define ENC_MACON3_FULDPX	0x01
-
-/* MACON4 Register Bits */
-#define ENC_MACON4_DEFER	0x40
-
-/* MICMD Register Bits */
-#define ENC_MICMD_MIISCAN	0x02
-#define ENC_MICMD_MIIRD		0x01
-
-/* MISTAT Register Bits */
-#define ENC_MISTAT_NVALID	0x04
-#define ENC_MISTAT_SCAN		0x02
-#define ENC_MISTAT_BUSY		0x01
-
-/* PHID1 and PHID2 values */
-#define ENC_PHID1_VALUE		0x0083
-#define ENC_PHID2_VALUE		0x1400
-#define ENC_PHID2_MASK		0xFC00
-
-/* PHCON1 values */
-#define	ENC_PHCON1_PDPXMD	0x0100
-
-/* PHSTAT1 values */
-#define	ENC_PHSTAT1_LLSTAT	0x0004
-
-/* PHSTAT2 values */
-#define	ENC_PHSTAT2_LSTAT	0x0400
-#define	ENC_PHSTAT2_DPXSTAT	0x0200
-
-#endif
diff --git a/include/netdev.h b/include/netdev.h
index 3958a4cd32..86d28ade14 100644
--- a/include/netdev.h
+++ b/include/netdev.h
@@ -39,8 +39,6 @@ int dm9000_initialize(bd_t *bis);
 int dnet_eth_initialize(int id, void *regs, unsigned int phy_addr);
 int e1000_initialize(bd_t *bis);
 int eepro100_initialize(bd_t *bis);
-int enc28j60_initialize(unsigned int bus, unsigned int cs,
-	unsigned int max_hz, unsigned int mode);
 int ep93xx_eth_initialize(u8 dev_num, int base_addr);
 int eth_3com_initialize (bd_t * bis);
 int ethoc_initialize(u8 dev_num, int base_addr);
-- 
2.16.1

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