1 // SPDX-License-Identifier: GPL-2.0-only
3 * Mediatek MT7530 DSA Switch driver
6 #include <linux/etherdevice.h>
7 #include <linux/if_bridge.h>
8 #include <linux/iopoll.h>
9 #include <linux/mdio.h>
10 #include <linux/mfd/syscon.h>
11 #include <linux/module.h>
12 #include <linux/netdevice.h>
13 #include <linux/of_mdio.h>
14 #include <linux/of_net.h>
15 #include <linux/of_platform.h>
16 #include <linux/phylink.h>
17 #include <linux/regmap.h>
18 #include <linux/regulator/consumer.h>
19 #include <linux/reset.h>
20 #include <linux/gpio/consumer.h>
21 #include <linux/gpio/driver.h>
26 /* String, offset, and register size in bytes if different from 4 bytes */
27 static const struct mt7530_mib_desc mt7530_mib[] = {
28 MIB_DESC(1, 0x00, "TxDrop"),
29 MIB_DESC(1, 0x04, "TxCrcErr"),
30 MIB_DESC(1, 0x08, "TxUnicast"),
31 MIB_DESC(1, 0x0c, "TxMulticast"),
32 MIB_DESC(1, 0x10, "TxBroadcast"),
33 MIB_DESC(1, 0x14, "TxCollision"),
34 MIB_DESC(1, 0x18, "TxSingleCollision"),
35 MIB_DESC(1, 0x1c, "TxMultipleCollision"),
36 MIB_DESC(1, 0x20, "TxDeferred"),
37 MIB_DESC(1, 0x24, "TxLateCollision"),
38 MIB_DESC(1, 0x28, "TxExcessiveCollistion"),
39 MIB_DESC(1, 0x2c, "TxPause"),
40 MIB_DESC(1, 0x30, "TxPktSz64"),
41 MIB_DESC(1, 0x34, "TxPktSz65To127"),
42 MIB_DESC(1, 0x38, "TxPktSz128To255"),
43 MIB_DESC(1, 0x3c, "TxPktSz256To511"),
44 MIB_DESC(1, 0x40, "TxPktSz512To1023"),
45 MIB_DESC(1, 0x44, "Tx1024ToMax"),
46 MIB_DESC(2, 0x48, "TxBytes"),
47 MIB_DESC(1, 0x60, "RxDrop"),
48 MIB_DESC(1, 0x64, "RxFiltering"),
49 MIB_DESC(1, 0x6c, "RxMulticast"),
50 MIB_DESC(1, 0x70, "RxBroadcast"),
51 MIB_DESC(1, 0x74, "RxAlignErr"),
52 MIB_DESC(1, 0x78, "RxCrcErr"),
53 MIB_DESC(1, 0x7c, "RxUnderSizeErr"),
54 MIB_DESC(1, 0x80, "RxFragErr"),
55 MIB_DESC(1, 0x84, "RxOverSzErr"),
56 MIB_DESC(1, 0x88, "RxJabberErr"),
57 MIB_DESC(1, 0x8c, "RxPause"),
58 MIB_DESC(1, 0x90, "RxPktSz64"),
59 MIB_DESC(1, 0x94, "RxPktSz65To127"),
60 MIB_DESC(1, 0x98, "RxPktSz128To255"),
61 MIB_DESC(1, 0x9c, "RxPktSz256To511"),
62 MIB_DESC(1, 0xa0, "RxPktSz512To1023"),
63 MIB_DESC(1, 0xa4, "RxPktSz1024ToMax"),
64 MIB_DESC(2, 0xa8, "RxBytes"),
65 MIB_DESC(1, 0xb0, "RxCtrlDrop"),
66 MIB_DESC(1, 0xb4, "RxIngressDrop"),
67 MIB_DESC(1, 0xb8, "RxArlDrop"),
71 core_read_mmd_indirect(struct mt7530_priv *priv, int prtad, int devad)
73 struct mii_bus *bus = priv->bus;
76 /* Write the desired MMD Devad */
77 ret = bus->write(bus, 0, MII_MMD_CTRL, devad);
81 /* Write the desired MMD register address */
82 ret = bus->write(bus, 0, MII_MMD_DATA, prtad);
86 /* Select the Function : DATA with no post increment */
87 ret = bus->write(bus, 0, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR));
91 /* Read the content of the MMD's selected register */
92 value = bus->read(bus, 0, MII_MMD_DATA);
96 dev_err(&bus->dev, "failed to read mmd register\n");
102 core_write_mmd_indirect(struct mt7530_priv *priv, int prtad,
105 struct mii_bus *bus = priv->bus;
108 /* Write the desired MMD Devad */
109 ret = bus->write(bus, 0, MII_MMD_CTRL, devad);
113 /* Write the desired MMD register address */
114 ret = bus->write(bus, 0, MII_MMD_DATA, prtad);
118 /* Select the Function : DATA with no post increment */
119 ret = bus->write(bus, 0, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR));
123 /* Write the data into MMD's selected register */
124 ret = bus->write(bus, 0, MII_MMD_DATA, data);
128 "failed to write mmd register\n");
133 core_write(struct mt7530_priv *priv, u32 reg, u32 val)
135 struct mii_bus *bus = priv->bus;
137 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
139 core_write_mmd_indirect(priv, reg, MDIO_MMD_VEND2, val);
141 mutex_unlock(&bus->mdio_lock);
145 core_rmw(struct mt7530_priv *priv, u32 reg, u32 mask, u32 set)
147 struct mii_bus *bus = priv->bus;
150 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
152 val = core_read_mmd_indirect(priv, reg, MDIO_MMD_VEND2);
155 core_write_mmd_indirect(priv, reg, MDIO_MMD_VEND2, val);
157 mutex_unlock(&bus->mdio_lock);
161 core_set(struct mt7530_priv *priv, u32 reg, u32 val)
163 core_rmw(priv, reg, 0, val);
167 core_clear(struct mt7530_priv *priv, u32 reg, u32 val)
169 core_rmw(priv, reg, val, 0);
173 mt7530_mii_write(struct mt7530_priv *priv, u32 reg, u32 val)
175 struct mii_bus *bus = priv->bus;
179 page = (reg >> 6) & 0x3ff;
180 r = (reg >> 2) & 0xf;
184 /* MT7530 uses 31 as the pseudo port */
185 ret = bus->write(bus, 0x1f, 0x1f, page);
189 ret = bus->write(bus, 0x1f, r, lo);
193 ret = bus->write(bus, 0x1f, 0x10, hi);
197 "failed to write mt7530 register\n");
202 mt7530_mii_read(struct mt7530_priv *priv, u32 reg)
204 struct mii_bus *bus = priv->bus;
208 page = (reg >> 6) & 0x3ff;
209 r = (reg >> 2) & 0xf;
211 /* MT7530 uses 31 as the pseudo port */
212 ret = bus->write(bus, 0x1f, 0x1f, page);
215 "failed to read mt7530 register\n");
219 lo = bus->read(bus, 0x1f, r);
220 hi = bus->read(bus, 0x1f, 0x10);
222 return (hi << 16) | (lo & 0xffff);
226 mt7530_write(struct mt7530_priv *priv, u32 reg, u32 val)
228 struct mii_bus *bus = priv->bus;
230 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
232 mt7530_mii_write(priv, reg, val);
234 mutex_unlock(&bus->mdio_lock);
238 _mt7530_unlocked_read(struct mt7530_dummy_poll *p)
240 return mt7530_mii_read(p->priv, p->reg);
244 _mt7530_read(struct mt7530_dummy_poll *p)
246 struct mii_bus *bus = p->priv->bus;
249 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
251 val = mt7530_mii_read(p->priv, p->reg);
253 mutex_unlock(&bus->mdio_lock);
259 mt7530_read(struct mt7530_priv *priv, u32 reg)
261 struct mt7530_dummy_poll p;
263 INIT_MT7530_DUMMY_POLL(&p, priv, reg);
264 return _mt7530_read(&p);
268 mt7530_rmw(struct mt7530_priv *priv, u32 reg,
271 struct mii_bus *bus = priv->bus;
274 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
276 val = mt7530_mii_read(priv, reg);
279 mt7530_mii_write(priv, reg, val);
281 mutex_unlock(&bus->mdio_lock);
285 mt7530_set(struct mt7530_priv *priv, u32 reg, u32 val)
287 mt7530_rmw(priv, reg, 0, val);
291 mt7530_clear(struct mt7530_priv *priv, u32 reg, u32 val)
293 mt7530_rmw(priv, reg, val, 0);
297 mt7530_fdb_cmd(struct mt7530_priv *priv, enum mt7530_fdb_cmd cmd, u32 *rsp)
301 struct mt7530_dummy_poll p;
303 /* Set the command operating upon the MAC address entries */
304 val = ATC_BUSY | ATC_MAT(0) | cmd;
305 mt7530_write(priv, MT7530_ATC, val);
307 INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_ATC);
308 ret = readx_poll_timeout(_mt7530_read, &p, val,
309 !(val & ATC_BUSY), 20, 20000);
311 dev_err(priv->dev, "reset timeout\n");
315 /* Additional sanity for read command if the specified
318 val = mt7530_read(priv, MT7530_ATC);
319 if ((cmd == MT7530_FDB_READ) && (val & ATC_INVALID))
329 mt7530_fdb_read(struct mt7530_priv *priv, struct mt7530_fdb *fdb)
334 /* Read from ARL table into an array */
335 for (i = 0; i < 3; i++) {
336 reg[i] = mt7530_read(priv, MT7530_TSRA1 + (i * 4));
338 dev_dbg(priv->dev, "%s(%d) reg[%d]=0x%x\n",
339 __func__, __LINE__, i, reg[i]);
342 fdb->vid = (reg[1] >> CVID) & CVID_MASK;
343 fdb->aging = (reg[2] >> AGE_TIMER) & AGE_TIMER_MASK;
344 fdb->port_mask = (reg[2] >> PORT_MAP) & PORT_MAP_MASK;
345 fdb->mac[0] = (reg[0] >> MAC_BYTE_0) & MAC_BYTE_MASK;
346 fdb->mac[1] = (reg[0] >> MAC_BYTE_1) & MAC_BYTE_MASK;
347 fdb->mac[2] = (reg[0] >> MAC_BYTE_2) & MAC_BYTE_MASK;
348 fdb->mac[3] = (reg[0] >> MAC_BYTE_3) & MAC_BYTE_MASK;
349 fdb->mac[4] = (reg[1] >> MAC_BYTE_4) & MAC_BYTE_MASK;
350 fdb->mac[5] = (reg[1] >> MAC_BYTE_5) & MAC_BYTE_MASK;
351 fdb->noarp = ((reg[2] >> ENT_STATUS) & ENT_STATUS_MASK) == STATIC_ENT;
355 mt7530_fdb_write(struct mt7530_priv *priv, u16 vid,
356 u8 port_mask, const u8 *mac,
362 reg[1] |= vid & CVID_MASK;
363 reg[2] |= (aging & AGE_TIMER_MASK) << AGE_TIMER;
364 reg[2] |= (port_mask & PORT_MAP_MASK) << PORT_MAP;
365 /* STATIC_ENT indicate that entry is static wouldn't
366 * be aged out and STATIC_EMP specified as erasing an
369 reg[2] |= (type & ENT_STATUS_MASK) << ENT_STATUS;
370 reg[1] |= mac[5] << MAC_BYTE_5;
371 reg[1] |= mac[4] << MAC_BYTE_4;
372 reg[0] |= mac[3] << MAC_BYTE_3;
373 reg[0] |= mac[2] << MAC_BYTE_2;
374 reg[0] |= mac[1] << MAC_BYTE_1;
375 reg[0] |= mac[0] << MAC_BYTE_0;
377 /* Write array into the ARL table */
378 for (i = 0; i < 3; i++)
379 mt7530_write(priv, MT7530_ATA1 + (i * 4), reg[i]);
382 /* Setup TX circuit including relevant PAD and driving */
384 mt7530_pad_clk_setup(struct dsa_switch *ds, phy_interface_t interface)
386 struct mt7530_priv *priv = ds->priv;
387 u32 ncpo1, ssc_delta, trgint, i, xtal;
389 xtal = mt7530_read(priv, MT7530_MHWTRAP) & HWTRAP_XTAL_MASK;
391 if (xtal == HWTRAP_XTAL_20MHZ) {
393 "%s: MT7530 with a 20MHz XTAL is not supported!\n",
399 case PHY_INTERFACE_MODE_RGMII:
401 /* PLL frequency: 125MHz */
404 case PHY_INTERFACE_MODE_TRGMII:
406 if (priv->id == ID_MT7621) {
407 /* PLL frequency: 150MHz: 1.2GBit */
408 if (xtal == HWTRAP_XTAL_40MHZ)
410 if (xtal == HWTRAP_XTAL_25MHZ)
412 } else { /* PLL frequency: 250MHz: 2.0Gbit */
413 if (xtal == HWTRAP_XTAL_40MHZ)
415 if (xtal == HWTRAP_XTAL_25MHZ)
420 dev_err(priv->dev, "xMII interface %d not supported\n",
425 if (xtal == HWTRAP_XTAL_25MHZ)
430 mt7530_rmw(priv, MT7530_P6ECR, P6_INTF_MODE_MASK,
431 P6_INTF_MODE(trgint));
433 /* Lower Tx Driving for TRGMII path */
434 for (i = 0 ; i < NUM_TRGMII_CTRL ; i++)
435 mt7530_write(priv, MT7530_TRGMII_TD_ODT(i),
436 TD_DM_DRVP(8) | TD_DM_DRVN(8));
438 /* Setup core clock for MT7530 */
439 /* Disable MT7530 core clock */
440 core_clear(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN);
442 /* Disable PLL, since phy_device has not yet been created
443 * provided for phy_[read,write]_mmd_indirect is called, we
444 * provide our own core_write_mmd_indirect to complete this
447 core_write_mmd_indirect(priv,
452 /* Set core clock into 500Mhz */
453 core_write(priv, CORE_GSWPLL_GRP2,
454 RG_GSWPLL_POSDIV_500M(1) |
455 RG_GSWPLL_FBKDIV_500M(25));
458 core_write(priv, CORE_GSWPLL_GRP1,
460 RG_GSWPLL_POSDIV_200M(2) |
461 RG_GSWPLL_FBKDIV_200M(32));
463 /* Enable MT7530 core clock */
464 core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN);
466 /* Setup the MT7530 TRGMII Tx Clock */
467 core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN);
468 core_write(priv, CORE_PLL_GROUP5, RG_LCDDS_PCW_NCPO1(ncpo1));
469 core_write(priv, CORE_PLL_GROUP6, RG_LCDDS_PCW_NCPO0(0));
470 core_write(priv, CORE_PLL_GROUP10, RG_LCDDS_SSC_DELTA(ssc_delta));
471 core_write(priv, CORE_PLL_GROUP11, RG_LCDDS_SSC_DELTA1(ssc_delta));
472 core_write(priv, CORE_PLL_GROUP4,
473 RG_SYSPLL_DDSFBK_EN | RG_SYSPLL_BIAS_EN |
474 RG_SYSPLL_BIAS_LPF_EN);
475 core_write(priv, CORE_PLL_GROUP2,
476 RG_SYSPLL_EN_NORMAL | RG_SYSPLL_VODEN |
477 RG_SYSPLL_POSDIV(1));
478 core_write(priv, CORE_PLL_GROUP7,
479 RG_LCDDS_PCW_NCPO_CHG | RG_LCCDS_C(3) |
480 RG_LCDDS_PWDB | RG_LCDDS_ISO_EN);
481 core_set(priv, CORE_TRGMII_GSW_CLK_CG,
482 REG_GSWCK_EN | REG_TRGMIICK_EN);
485 for (i = 0 ; i < NUM_TRGMII_CTRL; i++)
486 mt7530_rmw(priv, MT7530_TRGMII_RD(i),
487 RD_TAP_MASK, RD_TAP(16));
491 static bool mt7531_dual_sgmii_supported(struct mt7530_priv *priv)
495 val = mt7530_read(priv, MT7531_TOP_SIG_SR);
497 return (val & PAD_DUAL_SGMII_EN) != 0;
501 mt7531_pad_setup(struct dsa_switch *ds, phy_interface_t interface)
503 struct mt7530_priv *priv = ds->priv;
509 if (mt7531_dual_sgmii_supported(priv))
512 val = mt7530_read(priv, MT7531_CREV);
513 top_sig = mt7530_read(priv, MT7531_TOP_SIG_SR);
514 hwstrap = mt7530_read(priv, MT7531_HWTRAP);
515 if ((val & CHIP_REV_M) > 0)
516 xtal = (top_sig & PAD_MCM_SMI_EN) ? HWTRAP_XTAL_FSEL_40MHZ :
517 HWTRAP_XTAL_FSEL_25MHZ;
519 xtal = hwstrap & HWTRAP_XTAL_FSEL_MASK;
521 /* Step 1 : Disable MT7531 COREPLL */
522 val = mt7530_read(priv, MT7531_PLLGP_EN);
524 mt7530_write(priv, MT7531_PLLGP_EN, val);
526 /* Step 2: switch to XTAL output */
527 val = mt7530_read(priv, MT7531_PLLGP_EN);
529 mt7530_write(priv, MT7531_PLLGP_EN, val);
531 val = mt7530_read(priv, MT7531_PLLGP_CR0);
532 val &= ~RG_COREPLL_EN;
533 mt7530_write(priv, MT7531_PLLGP_CR0, val);
535 /* Step 3: disable PLLGP and enable program PLLGP */
536 val = mt7530_read(priv, MT7531_PLLGP_EN);
538 mt7530_write(priv, MT7531_PLLGP_EN, val);
540 /* Step 4: program COREPLL output frequency to 500MHz */
541 val = mt7530_read(priv, MT7531_PLLGP_CR0);
542 val &= ~RG_COREPLL_POSDIV_M;
543 val |= 2 << RG_COREPLL_POSDIV_S;
544 mt7530_write(priv, MT7531_PLLGP_CR0, val);
545 usleep_range(25, 35);
548 case HWTRAP_XTAL_FSEL_25MHZ:
549 val = mt7530_read(priv, MT7531_PLLGP_CR0);
550 val &= ~RG_COREPLL_SDM_PCW_M;
551 val |= 0x140000 << RG_COREPLL_SDM_PCW_S;
552 mt7530_write(priv, MT7531_PLLGP_CR0, val);
554 case HWTRAP_XTAL_FSEL_40MHZ:
555 val = mt7530_read(priv, MT7531_PLLGP_CR0);
556 val &= ~RG_COREPLL_SDM_PCW_M;
557 val |= 0x190000 << RG_COREPLL_SDM_PCW_S;
558 mt7530_write(priv, MT7531_PLLGP_CR0, val);
562 /* Set feedback divide ratio update signal to high */
563 val = mt7530_read(priv, MT7531_PLLGP_CR0);
564 val |= RG_COREPLL_SDM_PCW_CHG;
565 mt7530_write(priv, MT7531_PLLGP_CR0, val);
566 /* Wait for at least 16 XTAL clocks */
567 usleep_range(10, 20);
569 /* Step 5: set feedback divide ratio update signal to low */
570 val = mt7530_read(priv, MT7531_PLLGP_CR0);
571 val &= ~RG_COREPLL_SDM_PCW_CHG;
572 mt7530_write(priv, MT7531_PLLGP_CR0, val);
574 /* Enable 325M clock for SGMII */
575 mt7530_write(priv, MT7531_ANA_PLLGP_CR5, 0xad0000);
577 /* Enable 250SSC clock for RGMII */
578 mt7530_write(priv, MT7531_ANA_PLLGP_CR2, 0x4f40000);
580 /* Step 6: Enable MT7531 PLL */
581 val = mt7530_read(priv, MT7531_PLLGP_CR0);
582 val |= RG_COREPLL_EN;
583 mt7530_write(priv, MT7531_PLLGP_CR0, val);
585 val = mt7530_read(priv, MT7531_PLLGP_EN);
587 mt7530_write(priv, MT7531_PLLGP_EN, val);
588 usleep_range(25, 35);
594 mt7530_mib_reset(struct dsa_switch *ds)
596 struct mt7530_priv *priv = ds->priv;
598 mt7530_write(priv, MT7530_MIB_CCR, CCR_MIB_FLUSH);
599 mt7530_write(priv, MT7530_MIB_CCR, CCR_MIB_ACTIVATE);
602 static int mt7530_phy_read(struct dsa_switch *ds, int port, int regnum)
604 struct mt7530_priv *priv = ds->priv;
606 return mdiobus_read_nested(priv->bus, port, regnum);
609 static int mt7530_phy_write(struct dsa_switch *ds, int port, int regnum,
612 struct mt7530_priv *priv = ds->priv;
614 return mdiobus_write_nested(priv->bus, port, regnum, val);
618 mt7531_ind_c45_phy_read(struct mt7530_priv *priv, int port, int devad,
621 struct mii_bus *bus = priv->bus;
622 struct mt7530_dummy_poll p;
626 INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
628 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
630 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
631 !(val & MT7531_PHY_ACS_ST), 20, 100000);
633 dev_err(priv->dev, "poll timeout\n");
637 reg = MT7531_MDIO_CL45_ADDR | MT7531_MDIO_PHY_ADDR(port) |
638 MT7531_MDIO_DEV_ADDR(devad) | regnum;
639 mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
641 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
642 !(val & MT7531_PHY_ACS_ST), 20, 100000);
644 dev_err(priv->dev, "poll timeout\n");
648 reg = MT7531_MDIO_CL45_READ | MT7531_MDIO_PHY_ADDR(port) |
649 MT7531_MDIO_DEV_ADDR(devad);
650 mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
652 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
653 !(val & MT7531_PHY_ACS_ST), 20, 100000);
655 dev_err(priv->dev, "poll timeout\n");
659 ret = val & MT7531_MDIO_RW_DATA_MASK;
661 mutex_unlock(&bus->mdio_lock);
667 mt7531_ind_c45_phy_write(struct mt7530_priv *priv, int port, int devad,
668 int regnum, u32 data)
670 struct mii_bus *bus = priv->bus;
671 struct mt7530_dummy_poll p;
675 INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
677 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
679 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
680 !(val & MT7531_PHY_ACS_ST), 20, 100000);
682 dev_err(priv->dev, "poll timeout\n");
686 reg = MT7531_MDIO_CL45_ADDR | MT7531_MDIO_PHY_ADDR(port) |
687 MT7531_MDIO_DEV_ADDR(devad) | regnum;
688 mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
690 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
691 !(val & MT7531_PHY_ACS_ST), 20, 100000);
693 dev_err(priv->dev, "poll timeout\n");
697 reg = MT7531_MDIO_CL45_WRITE | MT7531_MDIO_PHY_ADDR(port) |
698 MT7531_MDIO_DEV_ADDR(devad) | data;
699 mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
701 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
702 !(val & MT7531_PHY_ACS_ST), 20, 100000);
704 dev_err(priv->dev, "poll timeout\n");
709 mutex_unlock(&bus->mdio_lock);
715 mt7531_ind_c22_phy_read(struct mt7530_priv *priv, int port, int regnum)
717 struct mii_bus *bus = priv->bus;
718 struct mt7530_dummy_poll p;
722 INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
724 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
726 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
727 !(val & MT7531_PHY_ACS_ST), 20, 100000);
729 dev_err(priv->dev, "poll timeout\n");
733 val = MT7531_MDIO_CL22_READ | MT7531_MDIO_PHY_ADDR(port) |
734 MT7531_MDIO_REG_ADDR(regnum);
736 mt7530_mii_write(priv, MT7531_PHY_IAC, val | MT7531_PHY_ACS_ST);
738 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
739 !(val & MT7531_PHY_ACS_ST), 20, 100000);
741 dev_err(priv->dev, "poll timeout\n");
745 ret = val & MT7531_MDIO_RW_DATA_MASK;
747 mutex_unlock(&bus->mdio_lock);
753 mt7531_ind_c22_phy_write(struct mt7530_priv *priv, int port, int regnum,
756 struct mii_bus *bus = priv->bus;
757 struct mt7530_dummy_poll p;
761 INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
763 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
765 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, reg,
766 !(reg & MT7531_PHY_ACS_ST), 20, 100000);
768 dev_err(priv->dev, "poll timeout\n");
772 reg = MT7531_MDIO_CL22_WRITE | MT7531_MDIO_PHY_ADDR(port) |
773 MT7531_MDIO_REG_ADDR(regnum) | data;
775 mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
777 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, reg,
778 !(reg & MT7531_PHY_ACS_ST), 20, 100000);
780 dev_err(priv->dev, "poll timeout\n");
785 mutex_unlock(&bus->mdio_lock);
791 mt7531_ind_phy_read(struct dsa_switch *ds, int port, int regnum)
793 struct mt7530_priv *priv = ds->priv;
797 if (regnum & MII_ADDR_C45) {
798 devad = (regnum >> MII_DEVADDR_C45_SHIFT) & 0x1f;
799 ret = mt7531_ind_c45_phy_read(priv, port, devad,
800 regnum & MII_REGADDR_C45_MASK);
802 ret = mt7531_ind_c22_phy_read(priv, port, regnum);
809 mt7531_ind_phy_write(struct dsa_switch *ds, int port, int regnum,
812 struct mt7530_priv *priv = ds->priv;
816 if (regnum & MII_ADDR_C45) {
817 devad = (regnum >> MII_DEVADDR_C45_SHIFT) & 0x1f;
818 ret = mt7531_ind_c45_phy_write(priv, port, devad,
819 regnum & MII_REGADDR_C45_MASK,
822 ret = mt7531_ind_c22_phy_write(priv, port, regnum, data);
829 mt7530_get_strings(struct dsa_switch *ds, int port, u32 stringset,
834 if (stringset != ETH_SS_STATS)
837 for (i = 0; i < ARRAY_SIZE(mt7530_mib); i++)
838 strncpy(data + i * ETH_GSTRING_LEN, mt7530_mib[i].name,
843 mt7530_get_ethtool_stats(struct dsa_switch *ds, int port,
846 struct mt7530_priv *priv = ds->priv;
847 const struct mt7530_mib_desc *mib;
851 for (i = 0; i < ARRAY_SIZE(mt7530_mib); i++) {
852 mib = &mt7530_mib[i];
853 reg = MT7530_PORT_MIB_COUNTER(port) + mib->offset;
855 data[i] = mt7530_read(priv, reg);
856 if (mib->size == 2) {
857 hi = mt7530_read(priv, reg + 4);
864 mt7530_get_sset_count(struct dsa_switch *ds, int port, int sset)
866 if (sset != ETH_SS_STATS)
869 return ARRAY_SIZE(mt7530_mib);
873 mt7530_set_ageing_time(struct dsa_switch *ds, unsigned int msecs)
875 struct mt7530_priv *priv = ds->priv;
876 unsigned int secs = msecs / 1000;
877 unsigned int tmp_age_count;
878 unsigned int error = -1;
879 unsigned int age_count;
880 unsigned int age_unit;
882 /* Applied timer is (AGE_CNT + 1) * (AGE_UNIT + 1) seconds */
883 if (secs < 1 || secs > (AGE_CNT_MAX + 1) * (AGE_UNIT_MAX + 1))
886 /* iterate through all possible age_count to find the closest pair */
887 for (tmp_age_count = 0; tmp_age_count <= AGE_CNT_MAX; ++tmp_age_count) {
888 unsigned int tmp_age_unit = secs / (tmp_age_count + 1) - 1;
890 if (tmp_age_unit <= AGE_UNIT_MAX) {
891 unsigned int tmp_error = secs -
892 (tmp_age_count + 1) * (tmp_age_unit + 1);
894 /* found a closer pair */
895 if (error > tmp_error) {
897 age_count = tmp_age_count;
898 age_unit = tmp_age_unit;
901 /* found the exact match, so break the loop */
907 mt7530_write(priv, MT7530_AAC, AGE_CNT(age_count) | AGE_UNIT(age_unit));
912 static void mt7530_setup_port5(struct dsa_switch *ds, phy_interface_t interface)
914 struct mt7530_priv *priv = ds->priv;
918 mutex_lock(&priv->reg_mutex);
920 val = mt7530_read(priv, MT7530_MHWTRAP);
922 val |= MHWTRAP_MANUAL | MHWTRAP_P5_MAC_SEL | MHWTRAP_P5_DIS;
923 val &= ~MHWTRAP_P5_RGMII_MODE & ~MHWTRAP_PHY0_SEL;
925 switch (priv->p5_intf_sel) {
926 case P5_INTF_SEL_PHY_P0:
927 /* MT7530_P5_MODE_GPHY_P0: 2nd GMAC -> P5 -> P0 */
928 val |= MHWTRAP_PHY0_SEL;
930 case P5_INTF_SEL_PHY_P4:
931 /* MT7530_P5_MODE_GPHY_P4: 2nd GMAC -> P5 -> P4 */
932 val &= ~MHWTRAP_P5_MAC_SEL & ~MHWTRAP_P5_DIS;
934 /* Setup the MAC by default for the cpu port */
935 mt7530_write(priv, MT7530_PMCR_P(5), 0x56300);
937 case P5_INTF_SEL_GMAC5:
938 /* MT7530_P5_MODE_GMAC: P5 -> External phy or 2nd GMAC */
939 val &= ~MHWTRAP_P5_DIS;
942 interface = PHY_INTERFACE_MODE_NA;
945 dev_err(ds->dev, "Unsupported p5_intf_sel %d\n",
950 /* Setup RGMII settings */
951 if (phy_interface_mode_is_rgmii(interface)) {
952 val |= MHWTRAP_P5_RGMII_MODE;
954 /* P5 RGMII RX Clock Control: delay setting for 1000M */
955 mt7530_write(priv, MT7530_P5RGMIIRXCR, CSR_RGMII_EDGE_ALIGN);
957 /* Don't set delay in DSA mode */
958 if (!dsa_is_dsa_port(priv->ds, 5) &&
959 (interface == PHY_INTERFACE_MODE_RGMII_TXID ||
960 interface == PHY_INTERFACE_MODE_RGMII_ID))
961 tx_delay = 4; /* n * 0.5 ns */
963 /* P5 RGMII TX Clock Control: delay x */
964 mt7530_write(priv, MT7530_P5RGMIITXCR,
965 CSR_RGMII_TXC_CFG(0x10 + tx_delay));
967 /* reduce P5 RGMII Tx driving, 8mA */
968 mt7530_write(priv, MT7530_IO_DRV_CR,
969 P5_IO_CLK_DRV(1) | P5_IO_DATA_DRV(1));
972 mt7530_write(priv, MT7530_MHWTRAP, val);
974 dev_dbg(ds->dev, "Setup P5, HWTRAP=0x%x, intf_sel=%s, phy-mode=%s\n",
975 val, p5_intf_modes(priv->p5_intf_sel), phy_modes(interface));
977 priv->p5_interface = interface;
980 mutex_unlock(&priv->reg_mutex);
984 mt753x_cpu_port_enable(struct dsa_switch *ds, int port)
986 struct mt7530_priv *priv = ds->priv;
989 /* Setup max capability of CPU port at first */
990 if (priv->info->cpu_port_config) {
991 ret = priv->info->cpu_port_config(ds, port);
996 /* Enable Mediatek header mode on the cpu port */
997 mt7530_write(priv, MT7530_PVC_P(port),
1000 /* Unknown multicast frame forwarding to the cpu port */
1001 mt7530_rmw(priv, MT7530_MFC, UNM_FFP_MASK, UNM_FFP(BIT(port)));
1003 /* Set CPU port number */
1004 if (priv->id == ID_MT7621)
1005 mt7530_rmw(priv, MT7530_MFC, CPU_MASK, CPU_EN | CPU_PORT(port));
1007 /* CPU port gets connected to all user ports of
1010 mt7530_write(priv, MT7530_PCR_P(port),
1011 PCR_MATRIX(dsa_user_ports(priv->ds)));
1017 mt7530_port_enable(struct dsa_switch *ds, int port,
1018 struct phy_device *phy)
1020 struct mt7530_priv *priv = ds->priv;
1022 if (!dsa_is_user_port(ds, port))
1025 mutex_lock(&priv->reg_mutex);
1027 /* Allow the user port gets connected to the cpu port and also
1028 * restore the port matrix if the port is the member of a certain
1031 priv->ports[port].pm |= PCR_MATRIX(BIT(MT7530_CPU_PORT));
1032 priv->ports[port].enable = true;
1033 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK,
1034 priv->ports[port].pm);
1035 mt7530_clear(priv, MT7530_PMCR_P(port), PMCR_LINK_SETTINGS_MASK);
1037 mutex_unlock(&priv->reg_mutex);
1043 mt7530_port_disable(struct dsa_switch *ds, int port)
1045 struct mt7530_priv *priv = ds->priv;
1047 if (!dsa_is_user_port(ds, port))
1050 mutex_lock(&priv->reg_mutex);
1052 /* Clear up all port matrix which could be restored in the next
1053 * enablement for the port.
1055 priv->ports[port].enable = false;
1056 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK,
1058 mt7530_clear(priv, MT7530_PMCR_P(port), PMCR_LINK_SETTINGS_MASK);
1060 mutex_unlock(&priv->reg_mutex);
1064 mt7530_port_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
1066 struct mt7530_priv *priv = ds->priv;
1067 struct mii_bus *bus = priv->bus;
1071 /* When a new MTU is set, DSA always set the CPU port's MTU to the
1072 * largest MTU of the slave ports. Because the switch only has a global
1073 * RX length register, only allowing CPU port here is enough.
1075 if (!dsa_is_cpu_port(ds, port))
1078 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
1080 val = mt7530_mii_read(priv, MT7530_GMACCR);
1081 val &= ~MAX_RX_PKT_LEN_MASK;
1083 /* RX length also includes Ethernet header, MTK tag, and FCS length */
1084 length = new_mtu + ETH_HLEN + MTK_HDR_LEN + ETH_FCS_LEN;
1085 if (length <= 1522) {
1086 val |= MAX_RX_PKT_LEN_1522;
1087 } else if (length <= 1536) {
1088 val |= MAX_RX_PKT_LEN_1536;
1089 } else if (length <= 1552) {
1090 val |= MAX_RX_PKT_LEN_1552;
1092 val &= ~MAX_RX_JUMBO_MASK;
1093 val |= MAX_RX_JUMBO(DIV_ROUND_UP(length, 1024));
1094 val |= MAX_RX_PKT_LEN_JUMBO;
1097 mt7530_mii_write(priv, MT7530_GMACCR, val);
1099 mutex_unlock(&bus->mdio_lock);
1105 mt7530_port_max_mtu(struct dsa_switch *ds, int port)
1107 return MT7530_MAX_MTU;
1111 mt7530_stp_state_set(struct dsa_switch *ds, int port, u8 state)
1113 struct mt7530_priv *priv = ds->priv;
1117 case BR_STATE_DISABLED:
1118 stp_state = MT7530_STP_DISABLED;
1120 case BR_STATE_BLOCKING:
1121 stp_state = MT7530_STP_BLOCKING;
1123 case BR_STATE_LISTENING:
1124 stp_state = MT7530_STP_LISTENING;
1126 case BR_STATE_LEARNING:
1127 stp_state = MT7530_STP_LEARNING;
1129 case BR_STATE_FORWARDING:
1131 stp_state = MT7530_STP_FORWARDING;
1135 mt7530_rmw(priv, MT7530_SSP_P(port), FID_PST_MASK, stp_state);
1139 mt7530_port_bridge_join(struct dsa_switch *ds, int port,
1140 struct net_device *bridge)
1142 struct mt7530_priv *priv = ds->priv;
1143 u32 port_bitmap = BIT(MT7530_CPU_PORT);
1146 mutex_lock(&priv->reg_mutex);
1148 for (i = 0; i < MT7530_NUM_PORTS; i++) {
1149 /* Add this port to the port matrix of the other ports in the
1150 * same bridge. If the port is disabled, port matrix is kept
1151 * and not being setup until the port becomes enabled.
1153 if (dsa_is_user_port(ds, i) && i != port) {
1154 if (dsa_to_port(ds, i)->bridge_dev != bridge)
1156 if (priv->ports[i].enable)
1157 mt7530_set(priv, MT7530_PCR_P(i),
1158 PCR_MATRIX(BIT(port)));
1159 priv->ports[i].pm |= PCR_MATRIX(BIT(port));
1161 port_bitmap |= BIT(i);
1165 /* Add the all other ports to this port matrix. */
1166 if (priv->ports[port].enable)
1167 mt7530_rmw(priv, MT7530_PCR_P(port),
1168 PCR_MATRIX_MASK, PCR_MATRIX(port_bitmap));
1169 priv->ports[port].pm |= PCR_MATRIX(port_bitmap);
1171 mutex_unlock(&priv->reg_mutex);
1177 mt7530_port_set_vlan_unaware(struct dsa_switch *ds, int port)
1179 struct mt7530_priv *priv = ds->priv;
1180 bool all_user_ports_removed = true;
1183 /* When a port is removed from the bridge, the port would be set up
1184 * back to the default as is at initial boot which is a VLAN-unaware
1187 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
1188 MT7530_PORT_MATRIX_MODE);
1189 mt7530_rmw(priv, MT7530_PVC_P(port), VLAN_ATTR_MASK | PVC_EG_TAG_MASK,
1190 VLAN_ATTR(MT7530_VLAN_TRANSPARENT) |
1191 PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
1193 for (i = 0; i < MT7530_NUM_PORTS; i++) {
1194 if (dsa_is_user_port(ds, i) &&
1195 dsa_port_is_vlan_filtering(dsa_to_port(ds, i))) {
1196 all_user_ports_removed = false;
1201 /* CPU port also does the same thing until all user ports belonging to
1202 * the CPU port get out of VLAN filtering mode.
1204 if (all_user_ports_removed) {
1205 mt7530_write(priv, MT7530_PCR_P(MT7530_CPU_PORT),
1206 PCR_MATRIX(dsa_user_ports(priv->ds)));
1207 mt7530_write(priv, MT7530_PVC_P(MT7530_CPU_PORT), PORT_SPEC_TAG
1208 | PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
1213 mt7530_port_set_vlan_aware(struct dsa_switch *ds, int port)
1215 struct mt7530_priv *priv = ds->priv;
1217 /* The real fabric path would be decided on the membership in the
1218 * entry of VLAN table. PCR_MATRIX set up here with ALL_MEMBERS
1219 * means potential VLAN can be consisting of certain subset of all
1222 mt7530_rmw(priv, MT7530_PCR_P(port),
1223 PCR_MATRIX_MASK, PCR_MATRIX(MT7530_ALL_MEMBERS));
1225 /* Trapped into security mode allows packet forwarding through VLAN
1226 * table lookup. CPU port is set to fallback mode to let untagged
1227 * frames pass through.
1229 if (dsa_is_cpu_port(ds, port))
1230 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
1231 MT7530_PORT_FALLBACK_MODE);
1233 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
1234 MT7530_PORT_SECURITY_MODE);
1236 /* Set the port as a user port which is to be able to recognize VID
1237 * from incoming packets before fetching entry within the VLAN table.
1239 mt7530_rmw(priv, MT7530_PVC_P(port), VLAN_ATTR_MASK | PVC_EG_TAG_MASK,
1240 VLAN_ATTR(MT7530_VLAN_USER) |
1241 PVC_EG_TAG(MT7530_VLAN_EG_DISABLED));
1245 mt7530_port_bridge_leave(struct dsa_switch *ds, int port,
1246 struct net_device *bridge)
1248 struct mt7530_priv *priv = ds->priv;
1251 mutex_lock(&priv->reg_mutex);
1253 for (i = 0; i < MT7530_NUM_PORTS; i++) {
1254 /* Remove this port from the port matrix of the other ports
1255 * in the same bridge. If the port is disabled, port matrix
1256 * is kept and not being setup until the port becomes enabled.
1257 * And the other port's port matrix cannot be broken when the
1258 * other port is still a VLAN-aware port.
1260 if (dsa_is_user_port(ds, i) && i != port &&
1261 !dsa_port_is_vlan_filtering(dsa_to_port(ds, i))) {
1262 if (dsa_to_port(ds, i)->bridge_dev != bridge)
1264 if (priv->ports[i].enable)
1265 mt7530_clear(priv, MT7530_PCR_P(i),
1266 PCR_MATRIX(BIT(port)));
1267 priv->ports[i].pm &= ~PCR_MATRIX(BIT(port));
1271 /* Set the cpu port to be the only one in the port matrix of
1274 if (priv->ports[port].enable)
1275 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK,
1276 PCR_MATRIX(BIT(MT7530_CPU_PORT)));
1277 priv->ports[port].pm = PCR_MATRIX(BIT(MT7530_CPU_PORT));
1279 mutex_unlock(&priv->reg_mutex);
1283 mt7530_port_fdb_add(struct dsa_switch *ds, int port,
1284 const unsigned char *addr, u16 vid)
1286 struct mt7530_priv *priv = ds->priv;
1288 u8 port_mask = BIT(port);
1290 mutex_lock(&priv->reg_mutex);
1291 mt7530_fdb_write(priv, vid, port_mask, addr, -1, STATIC_ENT);
1292 ret = mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL);
1293 mutex_unlock(&priv->reg_mutex);
1299 mt7530_port_fdb_del(struct dsa_switch *ds, int port,
1300 const unsigned char *addr, u16 vid)
1302 struct mt7530_priv *priv = ds->priv;
1304 u8 port_mask = BIT(port);
1306 mutex_lock(&priv->reg_mutex);
1307 mt7530_fdb_write(priv, vid, port_mask, addr, -1, STATIC_EMP);
1308 ret = mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL);
1309 mutex_unlock(&priv->reg_mutex);
1315 mt7530_port_fdb_dump(struct dsa_switch *ds, int port,
1316 dsa_fdb_dump_cb_t *cb, void *data)
1318 struct mt7530_priv *priv = ds->priv;
1319 struct mt7530_fdb _fdb = { 0 };
1320 int cnt = MT7530_NUM_FDB_RECORDS;
1324 mutex_lock(&priv->reg_mutex);
1326 ret = mt7530_fdb_cmd(priv, MT7530_FDB_START, &rsp);
1331 if (rsp & ATC_SRCH_HIT) {
1332 mt7530_fdb_read(priv, &_fdb);
1333 if (_fdb.port_mask & BIT(port)) {
1334 ret = cb(_fdb.mac, _fdb.vid, _fdb.noarp,
1341 !(rsp & ATC_SRCH_END) &&
1342 !mt7530_fdb_cmd(priv, MT7530_FDB_NEXT, &rsp));
1344 mutex_unlock(&priv->reg_mutex);
1350 mt7530_vlan_cmd(struct mt7530_priv *priv, enum mt7530_vlan_cmd cmd, u16 vid)
1352 struct mt7530_dummy_poll p;
1356 val = VTCR_BUSY | VTCR_FUNC(cmd) | vid;
1357 mt7530_write(priv, MT7530_VTCR, val);
1359 INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_VTCR);
1360 ret = readx_poll_timeout(_mt7530_read, &p, val,
1361 !(val & VTCR_BUSY), 20, 20000);
1363 dev_err(priv->dev, "poll timeout\n");
1367 val = mt7530_read(priv, MT7530_VTCR);
1368 if (val & VTCR_INVALID) {
1369 dev_err(priv->dev, "read VTCR invalid\n");
1377 mt7530_port_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering,
1378 struct netlink_ext_ack *extack)
1380 if (vlan_filtering) {
1381 /* The port is being kept as VLAN-unaware port when bridge is
1382 * set up with vlan_filtering not being set, Otherwise, the
1383 * port and the corresponding CPU port is required the setup
1384 * for becoming a VLAN-aware port.
1386 mt7530_port_set_vlan_aware(ds, port);
1387 mt7530_port_set_vlan_aware(ds, MT7530_CPU_PORT);
1389 mt7530_port_set_vlan_unaware(ds, port);
1396 mt7530_hw_vlan_add(struct mt7530_priv *priv,
1397 struct mt7530_hw_vlan_entry *entry)
1402 new_members = entry->old_members | BIT(entry->port) |
1403 BIT(MT7530_CPU_PORT);
1405 /* Validate the entry with independent learning, create egress tag per
1406 * VLAN and joining the port as one of the port members.
1408 val = IVL_MAC | VTAG_EN | PORT_MEM(new_members) | VLAN_VALID;
1409 mt7530_write(priv, MT7530_VAWD1, val);
1411 /* Decide whether adding tag or not for those outgoing packets from the
1412 * port inside the VLAN.
1414 val = entry->untagged ? MT7530_VLAN_EGRESS_UNTAG :
1415 MT7530_VLAN_EGRESS_TAG;
1416 mt7530_rmw(priv, MT7530_VAWD2,
1417 ETAG_CTRL_P_MASK(entry->port),
1418 ETAG_CTRL_P(entry->port, val));
1420 /* CPU port is always taken as a tagged port for serving more than one
1421 * VLANs across and also being applied with egress type stack mode for
1422 * that VLAN tags would be appended after hardware special tag used as
1425 mt7530_rmw(priv, MT7530_VAWD2,
1426 ETAG_CTRL_P_MASK(MT7530_CPU_PORT),
1427 ETAG_CTRL_P(MT7530_CPU_PORT,
1428 MT7530_VLAN_EGRESS_STACK));
1432 mt7530_hw_vlan_del(struct mt7530_priv *priv,
1433 struct mt7530_hw_vlan_entry *entry)
1438 new_members = entry->old_members & ~BIT(entry->port);
1440 val = mt7530_read(priv, MT7530_VAWD1);
1441 if (!(val & VLAN_VALID)) {
1443 "Cannot be deleted due to invalid entry\n");
1447 /* If certain member apart from CPU port is still alive in the VLAN,
1448 * the entry would be kept valid. Otherwise, the entry is got to be
1451 if (new_members && new_members != BIT(MT7530_CPU_PORT)) {
1452 val = IVL_MAC | VTAG_EN | PORT_MEM(new_members) |
1454 mt7530_write(priv, MT7530_VAWD1, val);
1456 mt7530_write(priv, MT7530_VAWD1, 0);
1457 mt7530_write(priv, MT7530_VAWD2, 0);
1462 mt7530_hw_vlan_update(struct mt7530_priv *priv, u16 vid,
1463 struct mt7530_hw_vlan_entry *entry,
1464 mt7530_vlan_op vlan_op)
1469 mt7530_vlan_cmd(priv, MT7530_VTCR_RD_VID, vid);
1471 val = mt7530_read(priv, MT7530_VAWD1);
1473 entry->old_members = (val >> PORT_MEM_SHFT) & PORT_MEM_MASK;
1475 /* Manipulate entry */
1476 vlan_op(priv, entry);
1478 /* Flush result to hardware */
1479 mt7530_vlan_cmd(priv, MT7530_VTCR_WR_VID, vid);
1483 mt7530_port_vlan_add(struct dsa_switch *ds, int port,
1484 const struct switchdev_obj_port_vlan *vlan,
1485 struct netlink_ext_ack *extack)
1487 bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
1488 bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
1489 struct mt7530_hw_vlan_entry new_entry;
1490 struct mt7530_priv *priv = ds->priv;
1492 mutex_lock(&priv->reg_mutex);
1494 mt7530_hw_vlan_entry_init(&new_entry, port, untagged);
1495 mt7530_hw_vlan_update(priv, vlan->vid, &new_entry, mt7530_hw_vlan_add);
1498 mt7530_rmw(priv, MT7530_PPBV1_P(port), G0_PORT_VID_MASK,
1499 G0_PORT_VID(vlan->vid));
1500 priv->ports[port].pvid = vlan->vid;
1503 mutex_unlock(&priv->reg_mutex);
1509 mt7530_port_vlan_del(struct dsa_switch *ds, int port,
1510 const struct switchdev_obj_port_vlan *vlan)
1512 struct mt7530_hw_vlan_entry target_entry;
1513 struct mt7530_priv *priv = ds->priv;
1516 mutex_lock(&priv->reg_mutex);
1518 pvid = priv->ports[port].pvid;
1519 mt7530_hw_vlan_entry_init(&target_entry, port, 0);
1520 mt7530_hw_vlan_update(priv, vlan->vid, &target_entry,
1521 mt7530_hw_vlan_del);
1523 /* PVID is being restored to the default whenever the PVID port
1524 * is being removed from the VLAN.
1526 if (pvid == vlan->vid)
1527 pvid = G0_PORT_VID_DEF;
1529 mt7530_rmw(priv, MT7530_PPBV1_P(port), G0_PORT_VID_MASK, pvid);
1530 priv->ports[port].pvid = pvid;
1532 mutex_unlock(&priv->reg_mutex);
1537 static int mt753x_mirror_port_get(unsigned int id, u32 val)
1539 return (id == ID_MT7531) ? MT7531_MIRROR_PORT_GET(val) :
1543 static int mt753x_mirror_port_set(unsigned int id, u32 val)
1545 return (id == ID_MT7531) ? MT7531_MIRROR_PORT_SET(val) :
1549 static int mt753x_port_mirror_add(struct dsa_switch *ds, int port,
1550 struct dsa_mall_mirror_tc_entry *mirror,
1553 struct mt7530_priv *priv = ds->priv;
1557 /* Check for existent entry */
1558 if ((ingress ? priv->mirror_rx : priv->mirror_tx) & BIT(port))
1561 val = mt7530_read(priv, MT753X_MIRROR_REG(priv->id));
1563 /* MT7530 only supports one monitor port */
1564 monitor_port = mt753x_mirror_port_get(priv->id, val);
1565 if (val & MT753X_MIRROR_EN(priv->id) &&
1566 monitor_port != mirror->to_local_port)
1569 val |= MT753X_MIRROR_EN(priv->id);
1570 val &= ~MT753X_MIRROR_MASK(priv->id);
1571 val |= mt753x_mirror_port_set(priv->id, mirror->to_local_port);
1572 mt7530_write(priv, MT753X_MIRROR_REG(priv->id), val);
1574 val = mt7530_read(priv, MT7530_PCR_P(port));
1577 priv->mirror_rx |= BIT(port);
1580 priv->mirror_tx |= BIT(port);
1582 mt7530_write(priv, MT7530_PCR_P(port), val);
1587 static void mt753x_port_mirror_del(struct dsa_switch *ds, int port,
1588 struct dsa_mall_mirror_tc_entry *mirror)
1590 struct mt7530_priv *priv = ds->priv;
1593 val = mt7530_read(priv, MT7530_PCR_P(port));
1594 if (mirror->ingress) {
1595 val &= ~PORT_RX_MIR;
1596 priv->mirror_rx &= ~BIT(port);
1598 val &= ~PORT_TX_MIR;
1599 priv->mirror_tx &= ~BIT(port);
1601 mt7530_write(priv, MT7530_PCR_P(port), val);
1603 if (!priv->mirror_rx && !priv->mirror_tx) {
1604 val = mt7530_read(priv, MT753X_MIRROR_REG(priv->id));
1605 val &= ~MT753X_MIRROR_EN(priv->id);
1606 mt7530_write(priv, MT753X_MIRROR_REG(priv->id), val);
1610 static enum dsa_tag_protocol
1611 mtk_get_tag_protocol(struct dsa_switch *ds, int port,
1612 enum dsa_tag_protocol mp)
1614 struct mt7530_priv *priv = ds->priv;
1616 if (port != MT7530_CPU_PORT) {
1618 "port not matched with tagging CPU port\n");
1619 return DSA_TAG_PROTO_NONE;
1621 return DSA_TAG_PROTO_MTK;
1625 #ifdef CONFIG_GPIOLIB
1627 mt7530_gpio_to_bit(unsigned int offset)
1629 /* Map GPIO offset to register bit
1630 * [ 2: 0] port 0 LED 0..2 as GPIO 0..2
1631 * [ 6: 4] port 1 LED 0..2 as GPIO 3..5
1632 * [10: 8] port 2 LED 0..2 as GPIO 6..8
1633 * [14:12] port 3 LED 0..2 as GPIO 9..11
1634 * [18:16] port 4 LED 0..2 as GPIO 12..14
1636 return BIT(offset + offset / 3);
1640 mt7530_gpio_get(struct gpio_chip *gc, unsigned int offset)
1642 struct mt7530_priv *priv = gpiochip_get_data(gc);
1643 u32 bit = mt7530_gpio_to_bit(offset);
1645 return !!(mt7530_read(priv, MT7530_LED_GPIO_DATA) & bit);
1649 mt7530_gpio_set(struct gpio_chip *gc, unsigned int offset, int value)
1651 struct mt7530_priv *priv = gpiochip_get_data(gc);
1652 u32 bit = mt7530_gpio_to_bit(offset);
1655 mt7530_set(priv, MT7530_LED_GPIO_DATA, bit);
1657 mt7530_clear(priv, MT7530_LED_GPIO_DATA, bit);
1661 mt7530_gpio_get_direction(struct gpio_chip *gc, unsigned int offset)
1663 struct mt7530_priv *priv = gpiochip_get_data(gc);
1664 u32 bit = mt7530_gpio_to_bit(offset);
1666 return (mt7530_read(priv, MT7530_LED_GPIO_DIR) & bit) ?
1667 GPIO_LINE_DIRECTION_OUT : GPIO_LINE_DIRECTION_IN;
1671 mt7530_gpio_direction_input(struct gpio_chip *gc, unsigned int offset)
1673 struct mt7530_priv *priv = gpiochip_get_data(gc);
1674 u32 bit = mt7530_gpio_to_bit(offset);
1676 mt7530_clear(priv, MT7530_LED_GPIO_OE, bit);
1677 mt7530_clear(priv, MT7530_LED_GPIO_DIR, bit);
1683 mt7530_gpio_direction_output(struct gpio_chip *gc, unsigned int offset, int value)
1685 struct mt7530_priv *priv = gpiochip_get_data(gc);
1686 u32 bit = mt7530_gpio_to_bit(offset);
1688 mt7530_set(priv, MT7530_LED_GPIO_DIR, bit);
1691 mt7530_set(priv, MT7530_LED_GPIO_DATA, bit);
1693 mt7530_clear(priv, MT7530_LED_GPIO_DATA, bit);
1695 mt7530_set(priv, MT7530_LED_GPIO_OE, bit);
1701 mt7530_setup_gpio(struct mt7530_priv *priv)
1703 struct device *dev = priv->dev;
1704 struct gpio_chip *gc;
1706 gc = devm_kzalloc(dev, sizeof(*gc), GFP_KERNEL);
1710 mt7530_write(priv, MT7530_LED_GPIO_OE, 0);
1711 mt7530_write(priv, MT7530_LED_GPIO_DIR, 0);
1712 mt7530_write(priv, MT7530_LED_IO_MODE, 0);
1714 gc->label = "mt7530";
1716 gc->owner = THIS_MODULE;
1717 gc->get_direction = mt7530_gpio_get_direction;
1718 gc->direction_input = mt7530_gpio_direction_input;
1719 gc->direction_output = mt7530_gpio_direction_output;
1720 gc->get = mt7530_gpio_get;
1721 gc->set = mt7530_gpio_set;
1724 gc->can_sleep = true;
1726 return devm_gpiochip_add_data(dev, gc, priv);
1728 #endif /* CONFIG_GPIOLIB */
1731 mt7530_setup(struct dsa_switch *ds)
1733 struct mt7530_priv *priv = ds->priv;
1734 struct device_node *phy_node;
1735 struct device_node *mac_np;
1736 struct mt7530_dummy_poll p;
1737 phy_interface_t interface;
1738 struct device_node *dn;
1742 /* The parent node of master netdev which holds the common system
1743 * controller also is the container for two GMACs nodes representing
1744 * as two netdev instances.
1746 dn = dsa_to_port(ds, MT7530_CPU_PORT)->master->dev.of_node->parent;
1747 ds->mtu_enforcement_ingress = true;
1749 if (priv->id == ID_MT7530) {
1750 regulator_set_voltage(priv->core_pwr, 1000000, 1000000);
1751 ret = regulator_enable(priv->core_pwr);
1754 "Failed to enable core power: %d\n", ret);
1758 regulator_set_voltage(priv->io_pwr, 3300000, 3300000);
1759 ret = regulator_enable(priv->io_pwr);
1761 dev_err(priv->dev, "Failed to enable io pwr: %d\n",
1767 /* Reset whole chip through gpio pin or memory-mapped registers for
1768 * different type of hardware
1771 reset_control_assert(priv->rstc);
1772 usleep_range(1000, 1100);
1773 reset_control_deassert(priv->rstc);
1775 gpiod_set_value_cansleep(priv->reset, 0);
1776 usleep_range(1000, 1100);
1777 gpiod_set_value_cansleep(priv->reset, 1);
1780 /* Waiting for MT7530 got to stable */
1781 INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_HWTRAP);
1782 ret = readx_poll_timeout(_mt7530_read, &p, val, val != 0,
1785 dev_err(priv->dev, "reset timeout\n");
1789 id = mt7530_read(priv, MT7530_CREV);
1790 id >>= CHIP_NAME_SHIFT;
1791 if (id != MT7530_ID) {
1792 dev_err(priv->dev, "chip %x can't be supported\n", id);
1796 /* Reset the switch through internal reset */
1797 mt7530_write(priv, MT7530_SYS_CTRL,
1798 SYS_CTRL_PHY_RST | SYS_CTRL_SW_RST |
1801 /* Enable Port 6 only; P5 as GMAC5 which currently is not supported */
1802 val = mt7530_read(priv, MT7530_MHWTRAP);
1803 val &= ~MHWTRAP_P6_DIS & ~MHWTRAP_PHY_ACCESS;
1804 val |= MHWTRAP_MANUAL;
1805 mt7530_write(priv, MT7530_MHWTRAP, val);
1807 priv->p6_interface = PHY_INTERFACE_MODE_NA;
1809 /* Enable and reset MIB counters */
1810 mt7530_mib_reset(ds);
1812 for (i = 0; i < MT7530_NUM_PORTS; i++) {
1813 /* Disable forwarding by default on all ports */
1814 mt7530_rmw(priv, MT7530_PCR_P(i), PCR_MATRIX_MASK,
1817 if (dsa_is_cpu_port(ds, i)) {
1818 ret = mt753x_cpu_port_enable(ds, i);
1822 mt7530_port_disable(ds, i);
1824 /* Enable consistent egress tag */
1825 mt7530_rmw(priv, MT7530_PVC_P(i), PVC_EG_TAG_MASK,
1826 PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
1830 priv->p5_intf_sel = P5_DISABLED;
1831 interface = PHY_INTERFACE_MODE_NA;
1833 if (!dsa_is_unused_port(ds, 5)) {
1834 priv->p5_intf_sel = P5_INTF_SEL_GMAC5;
1835 ret = of_get_phy_mode(dsa_to_port(ds, 5)->dn, &interface);
1836 if (ret && ret != -ENODEV)
1839 /* Scan the ethernet nodes. look for GMAC1, lookup used phy */
1840 for_each_child_of_node(dn, mac_np) {
1841 if (!of_device_is_compatible(mac_np,
1842 "mediatek,eth-mac"))
1845 ret = of_property_read_u32(mac_np, "reg", &id);
1846 if (ret < 0 || id != 1)
1849 phy_node = of_parse_phandle(mac_np, "phy-handle", 0);
1853 if (phy_node->parent == priv->dev->of_node->parent) {
1854 ret = of_get_phy_mode(mac_np, &interface);
1855 if (ret && ret != -ENODEV) {
1856 of_node_put(mac_np);
1859 id = of_mdio_parse_addr(ds->dev, phy_node);
1861 priv->p5_intf_sel = P5_INTF_SEL_PHY_P0;
1863 priv->p5_intf_sel = P5_INTF_SEL_PHY_P4;
1865 of_node_put(mac_np);
1866 of_node_put(phy_node);
1871 #ifdef CONFIG_GPIOLIB
1872 if (of_property_read_bool(priv->dev->of_node, "gpio-controller")) {
1873 ret = mt7530_setup_gpio(priv);
1877 #endif /* CONFIG_GPIOLIB */
1879 mt7530_setup_port5(ds, interface);
1881 /* Flush the FDB table */
1882 ret = mt7530_fdb_cmd(priv, MT7530_FDB_FLUSH, NULL);
1890 mt7531_setup(struct dsa_switch *ds)
1892 struct mt7530_priv *priv = ds->priv;
1893 struct mt7530_dummy_poll p;
1897 /* Reset whole chip through gpio pin or memory-mapped registers for
1898 * different type of hardware
1901 reset_control_assert(priv->rstc);
1902 usleep_range(1000, 1100);
1903 reset_control_deassert(priv->rstc);
1905 gpiod_set_value_cansleep(priv->reset, 0);
1906 usleep_range(1000, 1100);
1907 gpiod_set_value_cansleep(priv->reset, 1);
1910 /* Waiting for MT7530 got to stable */
1911 INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_HWTRAP);
1912 ret = readx_poll_timeout(_mt7530_read, &p, val, val != 0,
1915 dev_err(priv->dev, "reset timeout\n");
1919 id = mt7530_read(priv, MT7531_CREV);
1920 id >>= CHIP_NAME_SHIFT;
1922 if (id != MT7531_ID) {
1923 dev_err(priv->dev, "chip %x can't be supported\n", id);
1927 /* Reset the switch through internal reset */
1928 mt7530_write(priv, MT7530_SYS_CTRL,
1929 SYS_CTRL_PHY_RST | SYS_CTRL_SW_RST |
1932 if (mt7531_dual_sgmii_supported(priv)) {
1933 priv->p5_intf_sel = P5_INTF_SEL_GMAC5_SGMII;
1935 /* Let ds->slave_mii_bus be able to access external phy. */
1936 mt7530_rmw(priv, MT7531_GPIO_MODE1, MT7531_GPIO11_RG_RXD2_MASK,
1937 MT7531_EXT_P_MDC_11);
1938 mt7530_rmw(priv, MT7531_GPIO_MODE1, MT7531_GPIO12_RG_RXD3_MASK,
1939 MT7531_EXT_P_MDIO_12);
1941 priv->p5_intf_sel = P5_INTF_SEL_GMAC5;
1943 dev_dbg(ds->dev, "P5 support %s interface\n",
1944 p5_intf_modes(priv->p5_intf_sel));
1946 mt7530_rmw(priv, MT7531_GPIO_MODE0, MT7531_GPIO0_MASK,
1947 MT7531_GPIO0_INTERRUPT);
1949 /* Let phylink decide the interface later. */
1950 priv->p5_interface = PHY_INTERFACE_MODE_NA;
1951 priv->p6_interface = PHY_INTERFACE_MODE_NA;
1953 /* Enable PHY core PLL, since phy_device has not yet been created
1954 * provided for phy_[read,write]_mmd_indirect is called, we provide
1955 * our own mt7531_ind_mmd_phy_[read,write] to complete this
1958 val = mt7531_ind_c45_phy_read(priv, MT753X_CTRL_PHY_ADDR,
1959 MDIO_MMD_VEND2, CORE_PLL_GROUP4);
1960 val |= MT7531_PHY_PLL_BYPASS_MODE;
1961 val &= ~MT7531_PHY_PLL_OFF;
1962 mt7531_ind_c45_phy_write(priv, MT753X_CTRL_PHY_ADDR, MDIO_MMD_VEND2,
1963 CORE_PLL_GROUP4, val);
1965 /* BPDU to CPU port */
1966 mt7530_rmw(priv, MT7531_CFC, MT7531_CPU_PMAP_MASK,
1967 BIT(MT7530_CPU_PORT));
1968 mt7530_rmw(priv, MT753X_BPC, MT753X_BPDU_PORT_FW_MASK,
1969 MT753X_BPDU_CPU_ONLY);
1971 /* Enable and reset MIB counters */
1972 mt7530_mib_reset(ds);
1974 for (i = 0; i < MT7530_NUM_PORTS; i++) {
1975 /* Disable forwarding by default on all ports */
1976 mt7530_rmw(priv, MT7530_PCR_P(i), PCR_MATRIX_MASK,
1979 mt7530_set(priv, MT7531_DBG_CNT(i), MT7531_DIS_CLR);
1981 if (dsa_is_cpu_port(ds, i)) {
1982 ret = mt753x_cpu_port_enable(ds, i);
1986 mt7530_port_disable(ds, i);
1988 /* Enable consistent egress tag */
1989 mt7530_rmw(priv, MT7530_PVC_P(i), PVC_EG_TAG_MASK,
1990 PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
1993 ds->mtu_enforcement_ingress = true;
1995 /* Flush the FDB table */
1996 ret = mt7530_fdb_cmd(priv, MT7530_FDB_FLUSH, NULL);
2004 mt7530_phy_mode_supported(struct dsa_switch *ds, int port,
2005 const struct phylink_link_state *state)
2007 struct mt7530_priv *priv = ds->priv;
2010 case 0 ... 4: /* Internal phy */
2011 if (state->interface != PHY_INTERFACE_MODE_GMII)
2014 case 5: /* 2nd cpu port with phy of port 0 or 4 / external phy */
2015 if (!phy_interface_mode_is_rgmii(state->interface) &&
2016 state->interface != PHY_INTERFACE_MODE_MII &&
2017 state->interface != PHY_INTERFACE_MODE_GMII)
2020 case 6: /* 1st cpu port */
2021 if (state->interface != PHY_INTERFACE_MODE_RGMII &&
2022 state->interface != PHY_INTERFACE_MODE_TRGMII)
2026 dev_err(priv->dev, "%s: unsupported port: %i\n", __func__,
2034 static bool mt7531_is_rgmii_port(struct mt7530_priv *priv, u32 port)
2036 return (port == 5) && (priv->p5_intf_sel != P5_INTF_SEL_GMAC5_SGMII);
2040 mt7531_phy_mode_supported(struct dsa_switch *ds, int port,
2041 const struct phylink_link_state *state)
2043 struct mt7530_priv *priv = ds->priv;
2046 case 0 ... 4: /* Internal phy */
2047 if (state->interface != PHY_INTERFACE_MODE_GMII)
2050 case 5: /* 2nd cpu port supports either rgmii or sgmii/8023z */
2051 if (mt7531_is_rgmii_port(priv, port))
2052 return phy_interface_mode_is_rgmii(state->interface);
2054 case 6: /* 1st cpu port supports sgmii/8023z only */
2055 if (state->interface != PHY_INTERFACE_MODE_SGMII &&
2056 !phy_interface_mode_is_8023z(state->interface))
2060 dev_err(priv->dev, "%s: unsupported port: %i\n", __func__,
2069 mt753x_phy_mode_supported(struct dsa_switch *ds, int port,
2070 const struct phylink_link_state *state)
2072 struct mt7530_priv *priv = ds->priv;
2074 return priv->info->phy_mode_supported(ds, port, state);
2078 mt753x_pad_setup(struct dsa_switch *ds, const struct phylink_link_state *state)
2080 struct mt7530_priv *priv = ds->priv;
2082 return priv->info->pad_setup(ds, state->interface);
2086 mt7530_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
2087 phy_interface_t interface)
2089 struct mt7530_priv *priv = ds->priv;
2091 /* Only need to setup port5. */
2095 mt7530_setup_port5(priv->ds, interface);
2100 static int mt7531_rgmii_setup(struct mt7530_priv *priv, u32 port,
2101 phy_interface_t interface,
2102 struct phy_device *phydev)
2106 if (!mt7531_is_rgmii_port(priv, port)) {
2107 dev_err(priv->dev, "RGMII mode is not available for port %d\n",
2112 val = mt7530_read(priv, MT7531_CLKGEN_CTRL);
2114 val &= ~GP_MODE_MASK;
2115 val |= GP_MODE(MT7531_GP_MODE_RGMII);
2116 val &= ~CLK_SKEW_IN_MASK;
2117 val |= CLK_SKEW_IN(MT7531_CLK_SKEW_NO_CHG);
2118 val &= ~CLK_SKEW_OUT_MASK;
2119 val |= CLK_SKEW_OUT(MT7531_CLK_SKEW_NO_CHG);
2120 val |= TXCLK_NO_REVERSE | RXCLK_NO_DELAY;
2122 /* Do not adjust rgmii delay when vendor phy driver presents. */
2123 if (!phydev || phy_driver_is_genphy(phydev)) {
2124 val &= ~(TXCLK_NO_REVERSE | RXCLK_NO_DELAY);
2125 switch (interface) {
2126 case PHY_INTERFACE_MODE_RGMII:
2127 val |= TXCLK_NO_REVERSE;
2128 val |= RXCLK_NO_DELAY;
2130 case PHY_INTERFACE_MODE_RGMII_RXID:
2131 val |= TXCLK_NO_REVERSE;
2133 case PHY_INTERFACE_MODE_RGMII_TXID:
2134 val |= RXCLK_NO_DELAY;
2136 case PHY_INTERFACE_MODE_RGMII_ID:
2142 mt7530_write(priv, MT7531_CLKGEN_CTRL, val);
2147 static void mt7531_sgmii_validate(struct mt7530_priv *priv, int port,
2148 unsigned long *supported)
2150 /* Port5 supports ethier RGMII or SGMII.
2151 * Port6 supports SGMII only.
2155 if (mt7531_is_rgmii_port(priv, port))
2159 phylink_set(supported, 1000baseX_Full);
2160 phylink_set(supported, 2500baseX_Full);
2161 phylink_set(supported, 2500baseT_Full);
2166 mt7531_sgmii_link_up_force(struct dsa_switch *ds, int port,
2167 unsigned int mode, phy_interface_t interface,
2168 int speed, int duplex)
2170 struct mt7530_priv *priv = ds->priv;
2173 /* For adjusting speed and duplex of SGMII force mode. */
2174 if (interface != PHY_INTERFACE_MODE_SGMII ||
2175 phylink_autoneg_inband(mode))
2178 /* SGMII force mode setting */
2179 val = mt7530_read(priv, MT7531_SGMII_MODE(port));
2180 val &= ~MT7531_SGMII_IF_MODE_MASK;
2184 val |= MT7531_SGMII_FORCE_SPEED_10;
2187 val |= MT7531_SGMII_FORCE_SPEED_100;
2190 val |= MT7531_SGMII_FORCE_SPEED_1000;
2194 /* MT7531 SGMII 1G force mode can only work in full duplex mode,
2195 * no matter MT7531_SGMII_FORCE_HALF_DUPLEX is set or not.
2197 if ((speed == SPEED_10 || speed == SPEED_100) &&
2198 duplex != DUPLEX_FULL)
2199 val |= MT7531_SGMII_FORCE_HALF_DUPLEX;
2201 mt7530_write(priv, MT7531_SGMII_MODE(port), val);
2204 static bool mt753x_is_mac_port(u32 port)
2206 return (port == 5 || port == 6);
2209 static int mt7531_sgmii_setup_mode_force(struct mt7530_priv *priv, u32 port,
2210 phy_interface_t interface)
2214 if (!mt753x_is_mac_port(port))
2217 mt7530_set(priv, MT7531_QPHY_PWR_STATE_CTRL(port),
2218 MT7531_SGMII_PHYA_PWD);
2220 val = mt7530_read(priv, MT7531_PHYA_CTRL_SIGNAL3(port));
2221 val &= ~MT7531_RG_TPHY_SPEED_MASK;
2222 /* Setup 2.5 times faster clock for 2.5Gbps data speeds with 10B/8B
2225 val |= (interface == PHY_INTERFACE_MODE_2500BASEX) ?
2226 MT7531_RG_TPHY_SPEED_3_125G : MT7531_RG_TPHY_SPEED_1_25G;
2227 mt7530_write(priv, MT7531_PHYA_CTRL_SIGNAL3(port), val);
2229 mt7530_clear(priv, MT7531_PCS_CONTROL_1(port), MT7531_SGMII_AN_ENABLE);
2231 /* MT7531 SGMII 1G and 2.5G force mode can only work in full duplex
2232 * mode, no matter MT7531_SGMII_FORCE_HALF_DUPLEX is set or not.
2234 mt7530_rmw(priv, MT7531_SGMII_MODE(port),
2235 MT7531_SGMII_IF_MODE_MASK | MT7531_SGMII_REMOTE_FAULT_DIS,
2236 MT7531_SGMII_FORCE_SPEED_1000);
2238 mt7530_write(priv, MT7531_QPHY_PWR_STATE_CTRL(port), 0);
2243 static int mt7531_sgmii_setup_mode_an(struct mt7530_priv *priv, int port,
2244 phy_interface_t interface)
2246 if (!mt753x_is_mac_port(port))
2249 mt7530_set(priv, MT7531_QPHY_PWR_STATE_CTRL(port),
2250 MT7531_SGMII_PHYA_PWD);
2252 mt7530_rmw(priv, MT7531_PHYA_CTRL_SIGNAL3(port),
2253 MT7531_RG_TPHY_SPEED_MASK, MT7531_RG_TPHY_SPEED_1_25G);
2255 mt7530_set(priv, MT7531_SGMII_MODE(port),
2256 MT7531_SGMII_REMOTE_FAULT_DIS |
2257 MT7531_SGMII_SPEED_DUPLEX_AN);
2259 mt7530_rmw(priv, MT7531_PCS_SPEED_ABILITY(port),
2260 MT7531_SGMII_TX_CONFIG_MASK, 1);
2262 mt7530_set(priv, MT7531_PCS_CONTROL_1(port), MT7531_SGMII_AN_ENABLE);
2264 mt7530_set(priv, MT7531_PCS_CONTROL_1(port), MT7531_SGMII_AN_RESTART);
2266 mt7530_write(priv, MT7531_QPHY_PWR_STATE_CTRL(port), 0);
2271 static void mt7531_sgmii_restart_an(struct dsa_switch *ds, int port)
2273 struct mt7530_priv *priv = ds->priv;
2276 /* Only restart AN when AN is enabled */
2277 val = mt7530_read(priv, MT7531_PCS_CONTROL_1(port));
2278 if (val & MT7531_SGMII_AN_ENABLE) {
2279 val |= MT7531_SGMII_AN_RESTART;
2280 mt7530_write(priv, MT7531_PCS_CONTROL_1(port), val);
2285 mt7531_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
2286 phy_interface_t interface)
2288 struct mt7530_priv *priv = ds->priv;
2289 struct phy_device *phydev;
2290 struct dsa_port *dp;
2292 if (!mt753x_is_mac_port(port)) {
2293 dev_err(priv->dev, "port %d is not a MAC port\n", port);
2297 switch (interface) {
2298 case PHY_INTERFACE_MODE_RGMII:
2299 case PHY_INTERFACE_MODE_RGMII_ID:
2300 case PHY_INTERFACE_MODE_RGMII_RXID:
2301 case PHY_INTERFACE_MODE_RGMII_TXID:
2302 dp = dsa_to_port(ds, port);
2303 phydev = dp->slave->phydev;
2304 return mt7531_rgmii_setup(priv, port, interface, phydev);
2305 case PHY_INTERFACE_MODE_SGMII:
2306 return mt7531_sgmii_setup_mode_an(priv, port, interface);
2307 case PHY_INTERFACE_MODE_NA:
2308 case PHY_INTERFACE_MODE_1000BASEX:
2309 case PHY_INTERFACE_MODE_2500BASEX:
2310 if (phylink_autoneg_inband(mode))
2313 return mt7531_sgmii_setup_mode_force(priv, port, interface);
2322 mt753x_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
2323 const struct phylink_link_state *state)
2325 struct mt7530_priv *priv = ds->priv;
2327 return priv->info->mac_port_config(ds, port, mode, state->interface);
2331 mt753x_phylink_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
2332 const struct phylink_link_state *state)
2334 struct mt7530_priv *priv = ds->priv;
2335 u32 mcr_cur, mcr_new;
2337 if (!mt753x_phy_mode_supported(ds, port, state))
2341 case 0 ... 4: /* Internal phy */
2342 if (state->interface != PHY_INTERFACE_MODE_GMII)
2345 case 5: /* 2nd cpu port with phy of port 0 or 4 / external phy */
2346 if (priv->p5_interface == state->interface)
2349 if (mt753x_mac_config(ds, port, mode, state) < 0)
2352 if (priv->p5_intf_sel != P5_DISABLED)
2353 priv->p5_interface = state->interface;
2355 case 6: /* 1st cpu port */
2356 if (priv->p6_interface == state->interface)
2359 mt753x_pad_setup(ds, state);
2361 if (mt753x_mac_config(ds, port, mode, state) < 0)
2364 priv->p6_interface = state->interface;
2368 dev_err(ds->dev, "%s: unsupported %s port: %i\n",
2369 __func__, phy_modes(state->interface), port);
2373 if (phylink_autoneg_inband(mode) &&
2374 state->interface != PHY_INTERFACE_MODE_SGMII) {
2375 dev_err(ds->dev, "%s: in-band negotiation unsupported\n",
2380 mcr_cur = mt7530_read(priv, MT7530_PMCR_P(port));
2382 mcr_new &= ~PMCR_LINK_SETTINGS_MASK;
2383 mcr_new |= PMCR_IFG_XMIT(1) | PMCR_MAC_MODE | PMCR_BACKOFF_EN |
2384 PMCR_BACKPR_EN | PMCR_FORCE_MODE_ID(priv->id);
2386 /* Are we connected to external phy */
2387 if (port == 5 && dsa_is_user_port(ds, 5))
2388 mcr_new |= PMCR_EXT_PHY;
2390 if (mcr_new != mcr_cur)
2391 mt7530_write(priv, MT7530_PMCR_P(port), mcr_new);
2395 mt753x_phylink_mac_an_restart(struct dsa_switch *ds, int port)
2397 struct mt7530_priv *priv = ds->priv;
2399 if (!priv->info->mac_pcs_an_restart)
2402 priv->info->mac_pcs_an_restart(ds, port);
2405 static void mt753x_phylink_mac_link_down(struct dsa_switch *ds, int port,
2407 phy_interface_t interface)
2409 struct mt7530_priv *priv = ds->priv;
2411 mt7530_clear(priv, MT7530_PMCR_P(port), PMCR_LINK_SETTINGS_MASK);
2414 static void mt753x_mac_pcs_link_up(struct dsa_switch *ds, int port,
2415 unsigned int mode, phy_interface_t interface,
2416 int speed, int duplex)
2418 struct mt7530_priv *priv = ds->priv;
2420 if (!priv->info->mac_pcs_link_up)
2423 priv->info->mac_pcs_link_up(ds, port, mode, interface, speed, duplex);
2426 static void mt753x_phylink_mac_link_up(struct dsa_switch *ds, int port,
2428 phy_interface_t interface,
2429 struct phy_device *phydev,
2430 int speed, int duplex,
2431 bool tx_pause, bool rx_pause)
2433 struct mt7530_priv *priv = ds->priv;
2436 mt753x_mac_pcs_link_up(ds, port, mode, interface, speed, duplex);
2438 mcr = PMCR_RX_EN | PMCR_TX_EN | PMCR_FORCE_LNK;
2440 /* MT753x MAC works in 1G full duplex mode for all up-clocked
2443 if (interface == PHY_INTERFACE_MODE_TRGMII ||
2444 (phy_interface_mode_is_8023z(interface))) {
2446 duplex = DUPLEX_FULL;
2451 mcr |= PMCR_FORCE_SPEED_1000;
2454 mcr |= PMCR_FORCE_SPEED_100;
2457 if (duplex == DUPLEX_FULL) {
2458 mcr |= PMCR_FORCE_FDX;
2460 mcr |= PMCR_TX_FC_EN;
2462 mcr |= PMCR_RX_FC_EN;
2465 mt7530_set(priv, MT7530_PMCR_P(port), mcr);
2469 mt7531_cpu_port_config(struct dsa_switch *ds, int port)
2471 struct mt7530_priv *priv = ds->priv;
2472 phy_interface_t interface;
2478 if (mt7531_is_rgmii_port(priv, port))
2479 interface = PHY_INTERFACE_MODE_RGMII;
2481 interface = PHY_INTERFACE_MODE_2500BASEX;
2483 priv->p5_interface = interface;
2486 interface = PHY_INTERFACE_MODE_2500BASEX;
2488 mt7531_pad_setup(ds, interface);
2490 priv->p6_interface = interface;
2496 if (interface == PHY_INTERFACE_MODE_2500BASEX)
2501 ret = mt7531_mac_config(ds, port, MLO_AN_FIXED, interface);
2504 mt7530_write(priv, MT7530_PMCR_P(port),
2505 PMCR_CPU_PORT_SETTING(priv->id));
2506 mt753x_phylink_mac_link_up(ds, port, MLO_AN_FIXED, interface, NULL,
2507 speed, DUPLEX_FULL, true, true);
2513 mt7530_mac_port_validate(struct dsa_switch *ds, int port,
2514 unsigned long *supported)
2517 phylink_set(supported, 1000baseX_Full);
2520 static void mt7531_mac_port_validate(struct dsa_switch *ds, int port,
2521 unsigned long *supported)
2523 struct mt7530_priv *priv = ds->priv;
2525 mt7531_sgmii_validate(priv, port, supported);
2529 mt753x_phylink_validate(struct dsa_switch *ds, int port,
2530 unsigned long *supported,
2531 struct phylink_link_state *state)
2533 __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
2534 struct mt7530_priv *priv = ds->priv;
2536 if (state->interface != PHY_INTERFACE_MODE_NA &&
2537 !mt753x_phy_mode_supported(ds, port, state)) {
2538 linkmode_zero(supported);
2542 phylink_set_port_modes(mask);
2544 if (state->interface != PHY_INTERFACE_MODE_TRGMII ||
2545 !phy_interface_mode_is_8023z(state->interface)) {
2546 phylink_set(mask, 10baseT_Half);
2547 phylink_set(mask, 10baseT_Full);
2548 phylink_set(mask, 100baseT_Half);
2549 phylink_set(mask, 100baseT_Full);
2550 phylink_set(mask, Autoneg);
2553 /* This switch only supports 1G full-duplex. */
2554 if (state->interface != PHY_INTERFACE_MODE_MII)
2555 phylink_set(mask, 1000baseT_Full);
2557 priv->info->mac_port_validate(ds, port, mask);
2559 phylink_set(mask, Pause);
2560 phylink_set(mask, Asym_Pause);
2562 linkmode_and(supported, supported, mask);
2563 linkmode_and(state->advertising, state->advertising, mask);
2565 /* We can only operate at 2500BaseX or 1000BaseX. If requested
2566 * to advertise both, only report advertising at 2500BaseX.
2568 phylink_helper_basex_speed(state);
2572 mt7530_phylink_mac_link_state(struct dsa_switch *ds, int port,
2573 struct phylink_link_state *state)
2575 struct mt7530_priv *priv = ds->priv;
2578 if (port < 0 || port >= MT7530_NUM_PORTS)
2581 pmsr = mt7530_read(priv, MT7530_PMSR_P(port));
2583 state->link = (pmsr & PMSR_LINK);
2584 state->an_complete = state->link;
2585 state->duplex = !!(pmsr & PMSR_DPX);
2587 switch (pmsr & PMSR_SPEED_MASK) {
2589 state->speed = SPEED_10;
2591 case PMSR_SPEED_100:
2592 state->speed = SPEED_100;
2594 case PMSR_SPEED_1000:
2595 state->speed = SPEED_1000;
2598 state->speed = SPEED_UNKNOWN;
2602 state->pause &= ~(MLO_PAUSE_RX | MLO_PAUSE_TX);
2603 if (pmsr & PMSR_RX_FC)
2604 state->pause |= MLO_PAUSE_RX;
2605 if (pmsr & PMSR_TX_FC)
2606 state->pause |= MLO_PAUSE_TX;
2612 mt7531_sgmii_pcs_get_state_an(struct mt7530_priv *priv, int port,
2613 struct phylink_link_state *state)
2618 status = mt7530_read(priv, MT7531_PCS_CONTROL_1(port));
2619 state->link = !!(status & MT7531_SGMII_LINK_STATUS);
2620 if (state->interface == PHY_INTERFACE_MODE_SGMII &&
2621 (status & MT7531_SGMII_AN_ENABLE)) {
2622 val = mt7530_read(priv, MT7531_PCS_SPEED_ABILITY(port));
2623 config_reg = val >> 16;
2625 switch (config_reg & LPA_SGMII_SPD_MASK) {
2626 case LPA_SGMII_1000:
2627 state->speed = SPEED_1000;
2630 state->speed = SPEED_100;
2633 state->speed = SPEED_10;
2636 dev_err(priv->dev, "invalid sgmii PHY speed\n");
2637 state->link = false;
2641 if (config_reg & LPA_SGMII_FULL_DUPLEX)
2642 state->duplex = DUPLEX_FULL;
2644 state->duplex = DUPLEX_HALF;
2651 mt7531_phylink_mac_link_state(struct dsa_switch *ds, int port,
2652 struct phylink_link_state *state)
2654 struct mt7530_priv *priv = ds->priv;
2656 if (state->interface == PHY_INTERFACE_MODE_SGMII)
2657 return mt7531_sgmii_pcs_get_state_an(priv, port, state);
2663 mt753x_phylink_mac_link_state(struct dsa_switch *ds, int port,
2664 struct phylink_link_state *state)
2666 struct mt7530_priv *priv = ds->priv;
2668 return priv->info->mac_port_get_state(ds, port, state);
2672 mt753x_setup(struct dsa_switch *ds)
2674 struct mt7530_priv *priv = ds->priv;
2676 return priv->info->sw_setup(ds);
2680 mt753x_phy_read(struct dsa_switch *ds, int port, int regnum)
2682 struct mt7530_priv *priv = ds->priv;
2684 return priv->info->phy_read(ds, port, regnum);
2688 mt753x_phy_write(struct dsa_switch *ds, int port, int regnum, u16 val)
2690 struct mt7530_priv *priv = ds->priv;
2692 return priv->info->phy_write(ds, port, regnum, val);
2695 static const struct dsa_switch_ops mt7530_switch_ops = {
2696 .get_tag_protocol = mtk_get_tag_protocol,
2697 .setup = mt753x_setup,
2698 .get_strings = mt7530_get_strings,
2699 .phy_read = mt753x_phy_read,
2700 .phy_write = mt753x_phy_write,
2701 .get_ethtool_stats = mt7530_get_ethtool_stats,
2702 .get_sset_count = mt7530_get_sset_count,
2703 .set_ageing_time = mt7530_set_ageing_time,
2704 .port_enable = mt7530_port_enable,
2705 .port_disable = mt7530_port_disable,
2706 .port_change_mtu = mt7530_port_change_mtu,
2707 .port_max_mtu = mt7530_port_max_mtu,
2708 .port_stp_state_set = mt7530_stp_state_set,
2709 .port_bridge_join = mt7530_port_bridge_join,
2710 .port_bridge_leave = mt7530_port_bridge_leave,
2711 .port_fdb_add = mt7530_port_fdb_add,
2712 .port_fdb_del = mt7530_port_fdb_del,
2713 .port_fdb_dump = mt7530_port_fdb_dump,
2714 .port_vlan_filtering = mt7530_port_vlan_filtering,
2715 .port_vlan_add = mt7530_port_vlan_add,
2716 .port_vlan_del = mt7530_port_vlan_del,
2717 .port_mirror_add = mt753x_port_mirror_add,
2718 .port_mirror_del = mt753x_port_mirror_del,
2719 .phylink_validate = mt753x_phylink_validate,
2720 .phylink_mac_link_state = mt753x_phylink_mac_link_state,
2721 .phylink_mac_config = mt753x_phylink_mac_config,
2722 .phylink_mac_an_restart = mt753x_phylink_mac_an_restart,
2723 .phylink_mac_link_down = mt753x_phylink_mac_link_down,
2724 .phylink_mac_link_up = mt753x_phylink_mac_link_up,
2727 static const struct mt753x_info mt753x_table[] = {
2730 .sw_setup = mt7530_setup,
2731 .phy_read = mt7530_phy_read,
2732 .phy_write = mt7530_phy_write,
2733 .pad_setup = mt7530_pad_clk_setup,
2734 .phy_mode_supported = mt7530_phy_mode_supported,
2735 .mac_port_validate = mt7530_mac_port_validate,
2736 .mac_port_get_state = mt7530_phylink_mac_link_state,
2737 .mac_port_config = mt7530_mac_config,
2741 .sw_setup = mt7530_setup,
2742 .phy_read = mt7530_phy_read,
2743 .phy_write = mt7530_phy_write,
2744 .pad_setup = mt7530_pad_clk_setup,
2745 .phy_mode_supported = mt7530_phy_mode_supported,
2746 .mac_port_validate = mt7530_mac_port_validate,
2747 .mac_port_get_state = mt7530_phylink_mac_link_state,
2748 .mac_port_config = mt7530_mac_config,
2752 .sw_setup = mt7531_setup,
2753 .phy_read = mt7531_ind_phy_read,
2754 .phy_write = mt7531_ind_phy_write,
2755 .pad_setup = mt7531_pad_setup,
2756 .cpu_port_config = mt7531_cpu_port_config,
2757 .phy_mode_supported = mt7531_phy_mode_supported,
2758 .mac_port_validate = mt7531_mac_port_validate,
2759 .mac_port_get_state = mt7531_phylink_mac_link_state,
2760 .mac_port_config = mt7531_mac_config,
2761 .mac_pcs_an_restart = mt7531_sgmii_restart_an,
2762 .mac_pcs_link_up = mt7531_sgmii_link_up_force,
2766 static const struct of_device_id mt7530_of_match[] = {
2767 { .compatible = "mediatek,mt7621", .data = &mt753x_table[ID_MT7621], },
2768 { .compatible = "mediatek,mt7530", .data = &mt753x_table[ID_MT7530], },
2769 { .compatible = "mediatek,mt7531", .data = &mt753x_table[ID_MT7531], },
2772 MODULE_DEVICE_TABLE(of, mt7530_of_match);
2775 mt7530_probe(struct mdio_device *mdiodev)
2777 struct mt7530_priv *priv;
2778 struct device_node *dn;
2780 dn = mdiodev->dev.of_node;
2782 priv = devm_kzalloc(&mdiodev->dev, sizeof(*priv), GFP_KERNEL);
2786 priv->ds = devm_kzalloc(&mdiodev->dev, sizeof(*priv->ds), GFP_KERNEL);
2790 priv->ds->dev = &mdiodev->dev;
2791 priv->ds->num_ports = DSA_MAX_PORTS;
2793 /* Use medatek,mcm property to distinguish hardware type that would
2794 * casues a little bit differences on power-on sequence.
2796 priv->mcm = of_property_read_bool(dn, "mediatek,mcm");
2798 dev_info(&mdiodev->dev, "MT7530 adapts as multi-chip module\n");
2800 priv->rstc = devm_reset_control_get(&mdiodev->dev, "mcm");
2801 if (IS_ERR(priv->rstc)) {
2802 dev_err(&mdiodev->dev, "Couldn't get our reset line\n");
2803 return PTR_ERR(priv->rstc);
2807 /* Get the hardware identifier from the devicetree node.
2808 * We will need it for some of the clock and regulator setup.
2810 priv->info = of_device_get_match_data(&mdiodev->dev);
2814 /* Sanity check if these required device operations are filled
2817 if (!priv->info->sw_setup || !priv->info->pad_setup ||
2818 !priv->info->phy_read || !priv->info->phy_write ||
2819 !priv->info->phy_mode_supported ||
2820 !priv->info->mac_port_validate ||
2821 !priv->info->mac_port_get_state || !priv->info->mac_port_config)
2824 priv->id = priv->info->id;
2826 if (priv->id == ID_MT7530) {
2827 priv->core_pwr = devm_regulator_get(&mdiodev->dev, "core");
2828 if (IS_ERR(priv->core_pwr))
2829 return PTR_ERR(priv->core_pwr);
2831 priv->io_pwr = devm_regulator_get(&mdiodev->dev, "io");
2832 if (IS_ERR(priv->io_pwr))
2833 return PTR_ERR(priv->io_pwr);
2836 /* Not MCM that indicates switch works as the remote standalone
2837 * integrated circuit so the GPIO pin would be used to complete
2838 * the reset, otherwise memory-mapped register accessing used
2839 * through syscon provides in the case of MCM.
2842 priv->reset = devm_gpiod_get_optional(&mdiodev->dev, "reset",
2844 if (IS_ERR(priv->reset)) {
2845 dev_err(&mdiodev->dev, "Couldn't get our reset line\n");
2846 return PTR_ERR(priv->reset);
2850 priv->bus = mdiodev->bus;
2851 priv->dev = &mdiodev->dev;
2852 priv->ds->priv = priv;
2853 priv->ds->ops = &mt7530_switch_ops;
2854 mutex_init(&priv->reg_mutex);
2855 dev_set_drvdata(&mdiodev->dev, priv);
2857 return dsa_register_switch(priv->ds);
2861 mt7530_remove(struct mdio_device *mdiodev)
2863 struct mt7530_priv *priv = dev_get_drvdata(&mdiodev->dev);
2866 ret = regulator_disable(priv->core_pwr);
2869 "Failed to disable core power: %d\n", ret);
2871 ret = regulator_disable(priv->io_pwr);
2873 dev_err(priv->dev, "Failed to disable io pwr: %d\n",
2876 dsa_unregister_switch(priv->ds);
2877 mutex_destroy(&priv->reg_mutex);
2880 static struct mdio_driver mt7530_mdio_driver = {
2881 .probe = mt7530_probe,
2882 .remove = mt7530_remove,
2885 .of_match_table = mt7530_of_match,
2889 mdio_module_driver(mt7530_mdio_driver);
2892 MODULE_DESCRIPTION("Driver for Mediatek MT7530 Switch");
2893 MODULE_LICENSE("GPL");