1 // SPDX-License-Identifier: GPL-2.0+
4 * Dirk Eibach, Guntermann & Drunck GmbH, dirk.eibach@gdsys.cc
15 MIICMD_WAIT_FOR_VALUE,
27 * verify we are talking to a 88e1518
29 struct mii_setupcmd verify_88e1518[] = {
30 { MIICMD_SET, 22, 0x0000 },
31 { MIICMD_VERIFY_VALUE, 2, 0x0141, 0xffff },
32 { MIICMD_VERIFY_VALUE, 3, 0x0dd0, 0xfff0 },
36 * workaround for erratum mentioned in 88E1518 release notes
38 struct mii_setupcmd fixup_88e1518[] = {
39 { MIICMD_SET, 22, 0x00ff },
40 { MIICMD_SET, 17, 0x214b },
41 { MIICMD_SET, 16, 0x2144 },
42 { MIICMD_SET, 17, 0x0c28 },
43 { MIICMD_SET, 16, 0x2146 },
44 { MIICMD_SET, 17, 0xb233 },
45 { MIICMD_SET, 16, 0x214d },
46 { MIICMD_SET, 17, 0xcc0c },
47 { MIICMD_SET, 16, 0x2159 },
48 { MIICMD_SET, 22, 0x0000 },
52 * default initialization:
53 * - set RGMII receive timing to "receive clock transition when data stable"
54 * - set RGMII transmit timing to "transmit clock internally delayed"
55 * - set RGMII output impedance target to 78,8 Ohm
56 * - run output impedance calibration
57 * - set autonegotiation advertise to 1000FD only
59 struct mii_setupcmd default_88e1518[] = {
60 { MIICMD_SET, 22, 0x0002 },
61 { MIICMD_MODIFY, 21, 0x0030, 0x0030 },
62 { MIICMD_MODIFY, 25, 0x0000, 0x0003 },
63 { MIICMD_MODIFY, 24, 0x8000, 0x8000 },
64 { MIICMD_WAIT_FOR_VALUE, 24, 0x4000, 0x4000, 2000 },
65 { MIICMD_SET, 22, 0x0000 },
66 { MIICMD_MODIFY, 4, 0x0000, 0x01e0 },
67 { MIICMD_MODIFY, 9, 0x0200, 0x0300 },
71 * turn off CLK125 for PHY daughterboard
73 struct mii_setupcmd ch1fix_88e1518[] = {
74 { MIICMD_SET, 22, 0x0002 },
75 { MIICMD_MODIFY, 16, 0x0006, 0x0006 },
76 { MIICMD_SET, 22, 0x0000 },
80 * perform copper software reset
82 struct mii_setupcmd swreset_88e1518[] = {
83 { MIICMD_SET, 22, 0x0000 },
84 { MIICMD_MODIFY, 0, 0x8000, 0x8000 },
85 { MIICMD_WAIT_FOR_VALUE, 0, 0x0000, 0x8000, 2000 },
89 * special one for 88E1514:
90 * Force SGMII to Copper mode
92 struct mii_setupcmd mii_to_copper_88e1514[] = {
93 { MIICMD_SET, 22, 0x0012 },
94 { MIICMD_MODIFY, 20, 0x0001, 0x0007 },
95 { MIICMD_MODIFY, 20, 0x8000, 0x8000 },
96 { MIICMD_SET, 22, 0x0000 },
100 * turn off SGMII auto-negotiation
102 struct mii_setupcmd sgmii_autoneg_off_88e1518[] = {
103 { MIICMD_SET, 22, 0x0001 },
104 { MIICMD_MODIFY, 0, 0x0000, 0x1000 },
105 { MIICMD_MODIFY, 0, 0x8000, 0x8000 },
106 { MIICMD_SET, 22, 0x0000 },
110 * invert LED2 polarity
112 struct mii_setupcmd invert_led2_88e1514[] = {
113 { MIICMD_SET, 22, 0x0003 },
114 { MIICMD_MODIFY, 17, 0x0030, 0x0010 },
115 { MIICMD_SET, 22, 0x0000 },
118 static int process_setupcmd(const char *bus, unsigned char addr,
119 struct mii_setupcmd *setupcmd)
122 u8 reg = setupcmd->reg;
123 u16 data = setupcmd->data;
124 u16 mask = setupcmd->mask;
125 u32 timeout = setupcmd->timeout;
129 debug("mii %s:%u reg %2u ", bus, addr, reg);
131 switch (setupcmd->token) {
133 res = miiphy_read(bus, addr, reg, &orig_data);
136 debug("is %04x. (value %04x mask %04x) ", orig_data, data,
138 data = (orig_data & ~mask) | (data & mask);
141 debug("=> %04x\n", data);
142 res = miiphy_write(bus, addr, reg, data);
144 case MIICMD_VERIFY_VALUE:
145 res = miiphy_read(bus, addr, reg, &orig_data);
148 if ((orig_data & mask) != (data & mask))
150 debug("(value %04x mask %04x) == %04x? %s\n", data, mask,
151 orig_data, res ? "FAIL" : "PASS");
153 case MIICMD_WAIT_FOR_VALUE:
155 start = get_timer(0);
156 while ((res != 0) && (get_timer(start) < timeout)) {
157 res = miiphy_read(bus, addr, reg, &orig_data);
160 if ((orig_data & mask) != (data & mask))
163 debug("(value %04x mask %04x) == %04x? %s after %lu ms\n", data,
164 mask, orig_data, res ? "FAIL" : "PASS",
175 static int process_setup(const char *bus, unsigned char addr,
176 struct mii_setupcmd *setupcmd, unsigned int count)
181 for (k = 0; k < count; ++k) {
182 res = process_setupcmd(bus, addr, &setupcmd[k]);
184 printf("mii cmd %u on bus %s addr %u failed, aborting setup\n",
185 setupcmd[k].token, bus, addr);
193 int setup_88e1518(const char *bus, unsigned char addr)
197 res = process_setup(bus, addr,
198 verify_88e1518, ARRAY_SIZE(verify_88e1518));
202 res = process_setup(bus, addr,
203 fixup_88e1518, ARRAY_SIZE(fixup_88e1518));
207 res = process_setup(bus, addr,
208 default_88e1518, ARRAY_SIZE(default_88e1518));
213 res = process_setup(bus, addr,
214 ch1fix_88e1518, ARRAY_SIZE(ch1fix_88e1518));
219 res = process_setup(bus, addr,
220 swreset_88e1518, ARRAY_SIZE(swreset_88e1518));
227 int setup_88e1514(const char *bus, unsigned char addr)
231 res = process_setup(bus, addr,
232 verify_88e1518, ARRAY_SIZE(verify_88e1518));
236 res = process_setup(bus, addr,
237 fixup_88e1518, ARRAY_SIZE(fixup_88e1518));
241 res = process_setup(bus, addr,
242 mii_to_copper_88e1514,
243 ARRAY_SIZE(mii_to_copper_88e1514));
247 res = process_setup(bus, addr,
248 sgmii_autoneg_off_88e1518,
249 ARRAY_SIZE(sgmii_autoneg_off_88e1518));
253 res = process_setup(bus, addr,
255 ARRAY_SIZE(invert_led2_88e1514));
259 res = process_setup(bus, addr,
260 default_88e1518, ARRAY_SIZE(default_88e1518));
265 res = process_setup(bus, addr,
266 ch1fix_88e1518, ARRAY_SIZE(ch1fix_88e1518));
271 res = process_setup(bus, addr,
272 swreset_88e1518, ARRAY_SIZE(swreset_88e1518));