2 * Copyright (C) 2004-2008 Freescale Semiconductor, Inc.
3 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
5 * SPDX-License-Identifier: GPL-2.0+
13 #ifdef CONFIG_MCF547x_8x
14 #include <asm/fsl_mcdmafec.h>
18 #include <asm/immap.h>
20 DECLARE_GLOBAL_DATA_PTR;
22 #if defined(CONFIG_CMD_NET)
26 /*extern int fecpin_setclear(struct eth_device *dev, int setclear);*/
28 #if defined(CONFIG_SYS_DISCOVER_PHY) || defined(CONFIG_CMD_MII)
31 /* Make MII read/write commands for the FEC. */
32 #define mk_mii_read(ADDR, REG) (0x60020000 | ((ADDR << 23) | \
34 #define mk_mii_write(ADDR, REG, VAL) (0x50020000 | ((ADDR << 23) | \
35 (REG & 0x1f) << 18) | (VAL & 0xffff))
37 #ifndef CONFIG_SYS_UNSPEC_PHYID
38 # define CONFIG_SYS_UNSPEC_PHYID 0
40 #ifndef CONFIG_SYS_UNSPEC_STRID
41 # define CONFIG_SYS_UNSPEC_STRID 0
44 #ifdef CONFIG_MCF547x_8x
45 typedef struct fec_info_dma FEC_INFO_T;
46 #define FEC_T fecdma_t
48 typedef struct fec_info_s FEC_INFO_T;
52 typedef struct phy_info_struct {
57 phy_info_t phyinfo[] = {
58 {0x0022561B, "AMD79C784VC"}, /* AMD 79C784VC */
59 {0x00406322, "BCM5222"}, /* Broadcom 5222 */
60 {0x02a80150, "Intel82555"}, /* Intel 82555 */
61 {0x0016f870, "LSI80225"}, /* LSI 80225 */
62 {0x0016f880, "LSI80225/B"}, /* LSI 80225/B */
63 {0x78100000, "LXT970"}, /* LXT970 */
64 {0x001378e0, "LXT971"}, /* LXT971 and 972 */
65 {0x00221619, "KS8721BL"}, /* Micrel KS8721BL/SL */
66 {0x00221512, "KSZ8041NL"}, /* Micrel KSZ8041NL */
67 {0x20005CE1, "N83640"}, /* National 83640 */
68 {0x20005C90, "N83848"}, /* National 83848 */
69 {0x20005CA2, "N83849"}, /* National 83849 */
70 {0x01814400, "QS6612"}, /* QS6612 */
71 #if defined(CONFIG_SYS_UNSPEC_PHYID) && defined(CONFIG_SYS_UNSPEC_STRID)
72 {CONFIG_SYS_UNSPEC_PHYID, CONFIG_SYS_UNSPEC_STRID},
78 * mii_init -- Initialize the MII for MII command without ethernet
79 * This function is a subset of eth_init
81 void mii_reset(FEC_INFO_T *info)
83 volatile FEC_T *fecp = (FEC_T *) (info->miibase);
86 fecp->ecr = FEC_ECR_RESET;
88 for (i = 0; (fecp->ecr & FEC_ECR_RESET) && (i < FEC_RESET_DELAY); ++i) {
91 if (i == FEC_RESET_DELAY)
92 printf("FEC_RESET_DELAY timeout\n");
95 /* send command to phy using mii, wait for result */
96 uint mii_send(uint mii_cmd)
100 struct eth_device *dev;
104 /* retrieve from register structure */
108 ep = (FEC_T *) info->miibase;
110 ep->mmfr = mii_cmd; /* command to phy */
112 /* wait for mii complete */
113 while (!(ep->eir & FEC_EIR_MII) && (j < MCFFEC_TOUT_LOOP)) {
117 if (j >= MCFFEC_TOUT_LOOP) {
118 printf("MII not complete\n");
122 mii_reply = ep->mmfr; /* result from phy */
123 ep->eir = FEC_EIR_MII; /* clear MII complete */
125 printf("%s[%d] %s: sent=0x%8.8x, reply=0x%8.8x\n",
126 __FILE__, __LINE__, __FUNCTION__, mii_cmd, mii_reply);
129 return (mii_reply & 0xffff); /* data read from phy */
131 #endif /* CONFIG_SYS_DISCOVER_PHY || (CONFIG_MII) */
133 #if defined(CONFIG_SYS_DISCOVER_PHY)
134 int mii_discover_phy(struct eth_device *dev)
136 #define MAX_PHY_PASSES 11
137 FEC_INFO_T *info = dev->priv;
142 if (info->phyname_init)
143 return info->phy_addr;
145 phyaddr = -1; /* didn't find a PHY yet */
146 for (pass = 1; pass <= MAX_PHY_PASSES && phyaddr < 0; ++pass) {
148 /* PHY may need more time to recover from reset.
149 * The LXT970 needs 50ms typical, no maximum is
150 * specified, so wait 10ms before try again.
151 * With 11 passes this gives it 100ms to wake up.
153 udelay(10000); /* wait 10ms */
156 for (phyno = 0; phyno < 32 && phyaddr < 0; ++phyno) {
158 phytype = mii_send(mk_mii_read(phyno, MII_PHYSID1));
160 printf("PHY type 0x%x pass %d type\n", phytype, pass);
162 if (phytype == 0xffff)
167 mii_send(mk_mii_read(phyno, MII_PHYSID2));
170 printf("PHY @ 0x%x pass %d\n", phyno, pass);
173 for (i = 0; (i < ARRAY_SIZE(phyinfo))
174 && (phyinfo[i].phyid != 0); i++) {
175 if (phyinfo[i].phyid == phytype) {
177 printf("phyid %x - %s\n",
181 strcpy(info->phy_name, phyinfo[i].strid);
182 info->phyname_init = 1;
190 printf("0x%08x\n", phytype);
192 strcpy(info->phy_name, "unknown");
193 info->phyname_init = 1;
200 printf("No PHY device found.\n");
204 #endif /* CONFIG_SYS_DISCOVER_PHY */
206 void mii_init(void) __attribute__((weak,alias("__mii_init")));
208 void __mii_init(void)
211 volatile FEC_T *fecp;
212 struct eth_device *dev;
213 int miispd = 0, i = 0;
217 /* retrieve from register structure */
221 fecp = (FEC_T *) info->miibase;
223 fecpin_setclear(dev, 1);
227 /* We use strictly polling mode only */
230 /* Clear any pending interrupt */
231 fecp->eir = 0xffffffff;
234 miispd = (gd->bus_clk / 1000000) / 5;
235 fecp->mscr = miispd << 1;
237 info->phy_addr = mii_discover_phy(dev);
239 while (i < MCFFEC_TOUT_LOOP) {
242 /* Read PHY control register */
243 miiphy_read(dev->name, info->phy_addr, MII_BMCR, &status);
245 /* If phy set to autonegotiate, wait for autonegotiation done,
246 * if phy is not autonegotiating, just wait for link up.
248 if ((status & BMCR_ANENABLE) == BMCR_ANENABLE) {
249 linkgood = (BMSR_ANEGCOMPLETE | BMSR_LSTATUS);
251 linkgood = BMSR_LSTATUS;
253 /* Read PHY status register */
254 miiphy_read(dev->name, info->phy_addr, MII_BMSR, &status);
255 if ((status & linkgood) == linkgood)
260 if (i >= MCFFEC_TOUT_LOOP) {
261 printf("Link UP timeout\n");
264 /* adapt to the duplex and speed settings of the phy */
265 info->dup_spd = miiphy_duplex(dev->name, info->phy_addr) << 16;
266 info->dup_spd |= miiphy_speed(dev->name, info->phy_addr);
270 * Read and write a MII PHY register, routines used by MII Utilities
272 * FIXME: These routines are expected to return 0 on success, but mii_send
273 * does _not_ return an error code. Maybe 0xFFFF means error, i.e.
274 * no PHY connected...
275 * For now always return 0.
276 * FIXME: These routines only work after calling eth_init() at least once!
277 * Otherwise they hang in mii_send() !!! Sorry!
280 int mcffec_miiphy_read(const char *devname, unsigned char addr, unsigned char reg,
281 unsigned short *value)
283 short rdreg; /* register working value */
286 printf("miiphy_read(0x%x) @ 0x%x = ", reg, addr);
288 rdreg = mii_send(mk_mii_read(addr, reg));
293 printf("0x%04x\n", *value);
299 int mcffec_miiphy_write(const char *devname, unsigned char addr, unsigned char reg,
300 unsigned short value)
303 printf("miiphy_write(0x%x) @ 0x%x = ", reg, addr);
306 mii_send(mk_mii_write(addr, reg, value));
309 printf("0x%04x\n", value);
315 #endif /* CONFIG_CMD_NET */