1 // SPDX-License-Identifier: GPL-2.0-only
3 * Mediatek MT7530 DSA Switch driver
4 * Copyright (C) 2017 Sean Wang <sean.wang@mediatek.com>
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_irq.h>
14 #include <linux/of_mdio.h>
15 #include <linux/of_net.h>
16 #include <linux/of_platform.h>
17 #include <linux/phylink.h>
18 #include <linux/regmap.h>
19 #include <linux/regulator/consumer.h>
20 #include <linux/reset.h>
21 #include <linux/gpio/consumer.h>
22 #include <linux/gpio/driver.h>
27 static struct mt753x_pcs *pcs_to_mt753x_pcs(struct phylink_pcs *pcs)
29 return container_of(pcs, struct mt753x_pcs, pcs);
32 /* String, offset, and register size in bytes if different from 4 bytes */
33 static const struct mt7530_mib_desc mt7530_mib[] = {
34 MIB_DESC(1, 0x00, "TxDrop"),
35 MIB_DESC(1, 0x04, "TxCrcErr"),
36 MIB_DESC(1, 0x08, "TxUnicast"),
37 MIB_DESC(1, 0x0c, "TxMulticast"),
38 MIB_DESC(1, 0x10, "TxBroadcast"),
39 MIB_DESC(1, 0x14, "TxCollision"),
40 MIB_DESC(1, 0x18, "TxSingleCollision"),
41 MIB_DESC(1, 0x1c, "TxMultipleCollision"),
42 MIB_DESC(1, 0x20, "TxDeferred"),
43 MIB_DESC(1, 0x24, "TxLateCollision"),
44 MIB_DESC(1, 0x28, "TxExcessiveCollistion"),
45 MIB_DESC(1, 0x2c, "TxPause"),
46 MIB_DESC(1, 0x30, "TxPktSz64"),
47 MIB_DESC(1, 0x34, "TxPktSz65To127"),
48 MIB_DESC(1, 0x38, "TxPktSz128To255"),
49 MIB_DESC(1, 0x3c, "TxPktSz256To511"),
50 MIB_DESC(1, 0x40, "TxPktSz512To1023"),
51 MIB_DESC(1, 0x44, "Tx1024ToMax"),
52 MIB_DESC(2, 0x48, "TxBytes"),
53 MIB_DESC(1, 0x60, "RxDrop"),
54 MIB_DESC(1, 0x64, "RxFiltering"),
55 MIB_DESC(1, 0x68, "RxUnicast"),
56 MIB_DESC(1, 0x6c, "RxMulticast"),
57 MIB_DESC(1, 0x70, "RxBroadcast"),
58 MIB_DESC(1, 0x74, "RxAlignErr"),
59 MIB_DESC(1, 0x78, "RxCrcErr"),
60 MIB_DESC(1, 0x7c, "RxUnderSizeErr"),
61 MIB_DESC(1, 0x80, "RxFragErr"),
62 MIB_DESC(1, 0x84, "RxOverSzErr"),
63 MIB_DESC(1, 0x88, "RxJabberErr"),
64 MIB_DESC(1, 0x8c, "RxPause"),
65 MIB_DESC(1, 0x90, "RxPktSz64"),
66 MIB_DESC(1, 0x94, "RxPktSz65To127"),
67 MIB_DESC(1, 0x98, "RxPktSz128To255"),
68 MIB_DESC(1, 0x9c, "RxPktSz256To511"),
69 MIB_DESC(1, 0xa0, "RxPktSz512To1023"),
70 MIB_DESC(1, 0xa4, "RxPktSz1024ToMax"),
71 MIB_DESC(2, 0xa8, "RxBytes"),
72 MIB_DESC(1, 0xb0, "RxCtrlDrop"),
73 MIB_DESC(1, 0xb4, "RxIngressDrop"),
74 MIB_DESC(1, 0xb8, "RxArlDrop"),
77 /* Since phy_device has not yet been created and
78 * phy_{read,write}_mmd_indirect is not available, we provide our own
79 * core_{read,write}_mmd_indirect with core_{clear,write,set} wrappers
80 * to complete this function.
83 core_read_mmd_indirect(struct mt7530_priv *priv, int prtad, int devad)
85 struct mii_bus *bus = priv->bus;
88 /* Write the desired MMD Devad */
89 ret = bus->write(bus, 0, MII_MMD_CTRL, devad);
93 /* Write the desired MMD register address */
94 ret = bus->write(bus, 0, MII_MMD_DATA, prtad);
98 /* Select the Function : DATA with no post increment */
99 ret = bus->write(bus, 0, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR));
103 /* Read the content of the MMD's selected register */
104 value = bus->read(bus, 0, MII_MMD_DATA);
108 dev_err(&bus->dev, "failed to read mmd register\n");
114 core_write_mmd_indirect(struct mt7530_priv *priv, int prtad,
117 struct mii_bus *bus = priv->bus;
120 /* Write the desired MMD Devad */
121 ret = bus->write(bus, 0, MII_MMD_CTRL, devad);
125 /* Write the desired MMD register address */
126 ret = bus->write(bus, 0, MII_MMD_DATA, prtad);
130 /* Select the Function : DATA with no post increment */
131 ret = bus->write(bus, 0, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR));
135 /* Write the data into MMD's selected register */
136 ret = bus->write(bus, 0, MII_MMD_DATA, data);
140 "failed to write mmd register\n");
145 core_write(struct mt7530_priv *priv, u32 reg, u32 val)
147 struct mii_bus *bus = priv->bus;
149 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
151 core_write_mmd_indirect(priv, reg, MDIO_MMD_VEND2, val);
153 mutex_unlock(&bus->mdio_lock);
157 core_rmw(struct mt7530_priv *priv, u32 reg, u32 mask, u32 set)
159 struct mii_bus *bus = priv->bus;
162 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
164 val = core_read_mmd_indirect(priv, reg, MDIO_MMD_VEND2);
167 core_write_mmd_indirect(priv, reg, MDIO_MMD_VEND2, val);
169 mutex_unlock(&bus->mdio_lock);
173 core_set(struct mt7530_priv *priv, u32 reg, u32 val)
175 core_rmw(priv, reg, 0, val);
179 core_clear(struct mt7530_priv *priv, u32 reg, u32 val)
181 core_rmw(priv, reg, val, 0);
185 mt7530_mii_write(struct mt7530_priv *priv, u32 reg, u32 val)
187 struct mii_bus *bus = priv->bus;
191 page = (reg >> 6) & 0x3ff;
192 r = (reg >> 2) & 0xf;
196 /* MT7530 uses 31 as the pseudo port */
197 ret = bus->write(bus, 0x1f, 0x1f, page);
201 ret = bus->write(bus, 0x1f, r, lo);
205 ret = bus->write(bus, 0x1f, 0x10, hi);
209 "failed to write mt7530 register\n");
214 mt7530_mii_read(struct mt7530_priv *priv, u32 reg)
216 struct mii_bus *bus = priv->bus;
220 page = (reg >> 6) & 0x3ff;
221 r = (reg >> 2) & 0xf;
223 /* MT7530 uses 31 as the pseudo port */
224 ret = bus->write(bus, 0x1f, 0x1f, page);
227 "failed to read mt7530 register\n");
231 lo = bus->read(bus, 0x1f, r);
232 hi = bus->read(bus, 0x1f, 0x10);
234 return (hi << 16) | (lo & 0xffff);
238 mt7530_write(struct mt7530_priv *priv, u32 reg, u32 val)
240 struct mii_bus *bus = priv->bus;
242 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
244 mt7530_mii_write(priv, reg, val);
246 mutex_unlock(&bus->mdio_lock);
250 _mt7530_unlocked_read(struct mt7530_dummy_poll *p)
252 return mt7530_mii_read(p->priv, p->reg);
256 _mt7530_read(struct mt7530_dummy_poll *p)
258 struct mii_bus *bus = p->priv->bus;
261 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
263 val = mt7530_mii_read(p->priv, p->reg);
265 mutex_unlock(&bus->mdio_lock);
271 mt7530_read(struct mt7530_priv *priv, u32 reg)
273 struct mt7530_dummy_poll p;
275 INIT_MT7530_DUMMY_POLL(&p, priv, reg);
276 return _mt7530_read(&p);
280 mt7530_rmw(struct mt7530_priv *priv, u32 reg,
283 struct mii_bus *bus = priv->bus;
286 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
288 val = mt7530_mii_read(priv, reg);
291 mt7530_mii_write(priv, reg, val);
293 mutex_unlock(&bus->mdio_lock);
297 mt7530_set(struct mt7530_priv *priv, u32 reg, u32 val)
299 mt7530_rmw(priv, reg, 0, val);
303 mt7530_clear(struct mt7530_priv *priv, u32 reg, u32 val)
305 mt7530_rmw(priv, reg, val, 0);
309 mt7530_fdb_cmd(struct mt7530_priv *priv, enum mt7530_fdb_cmd cmd, u32 *rsp)
313 struct mt7530_dummy_poll p;
315 /* Set the command operating upon the MAC address entries */
316 val = ATC_BUSY | ATC_MAT(0) | cmd;
317 mt7530_write(priv, MT7530_ATC, val);
319 INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_ATC);
320 ret = readx_poll_timeout(_mt7530_read, &p, val,
321 !(val & ATC_BUSY), 20, 20000);
323 dev_err(priv->dev, "reset timeout\n");
327 /* Additional sanity for read command if the specified
330 val = mt7530_read(priv, MT7530_ATC);
331 if ((cmd == MT7530_FDB_READ) && (val & ATC_INVALID))
341 mt7530_fdb_read(struct mt7530_priv *priv, struct mt7530_fdb *fdb)
346 /* Read from ARL table into an array */
347 for (i = 0; i < 3; i++) {
348 reg[i] = mt7530_read(priv, MT7530_TSRA1 + (i * 4));
350 dev_dbg(priv->dev, "%s(%d) reg[%d]=0x%x\n",
351 __func__, __LINE__, i, reg[i]);
354 fdb->vid = (reg[1] >> CVID) & CVID_MASK;
355 fdb->aging = (reg[2] >> AGE_TIMER) & AGE_TIMER_MASK;
356 fdb->port_mask = (reg[2] >> PORT_MAP) & PORT_MAP_MASK;
357 fdb->mac[0] = (reg[0] >> MAC_BYTE_0) & MAC_BYTE_MASK;
358 fdb->mac[1] = (reg[0] >> MAC_BYTE_1) & MAC_BYTE_MASK;
359 fdb->mac[2] = (reg[0] >> MAC_BYTE_2) & MAC_BYTE_MASK;
360 fdb->mac[3] = (reg[0] >> MAC_BYTE_3) & MAC_BYTE_MASK;
361 fdb->mac[4] = (reg[1] >> MAC_BYTE_4) & MAC_BYTE_MASK;
362 fdb->mac[5] = (reg[1] >> MAC_BYTE_5) & MAC_BYTE_MASK;
363 fdb->noarp = ((reg[2] >> ENT_STATUS) & ENT_STATUS_MASK) == STATIC_ENT;
367 mt7530_fdb_write(struct mt7530_priv *priv, u16 vid,
368 u8 port_mask, const u8 *mac,
374 reg[1] |= vid & CVID_MASK;
376 reg[1] |= ATA2_FID(FID_BRIDGED);
377 reg[2] |= (aging & AGE_TIMER_MASK) << AGE_TIMER;
378 reg[2] |= (port_mask & PORT_MAP_MASK) << PORT_MAP;
379 /* STATIC_ENT indicate that entry is static wouldn't
380 * be aged out and STATIC_EMP specified as erasing an
383 reg[2] |= (type & ENT_STATUS_MASK) << ENT_STATUS;
384 reg[1] |= mac[5] << MAC_BYTE_5;
385 reg[1] |= mac[4] << MAC_BYTE_4;
386 reg[0] |= mac[3] << MAC_BYTE_3;
387 reg[0] |= mac[2] << MAC_BYTE_2;
388 reg[0] |= mac[1] << MAC_BYTE_1;
389 reg[0] |= mac[0] << MAC_BYTE_0;
391 /* Write array into the ARL table */
392 for (i = 0; i < 3; i++)
393 mt7530_write(priv, MT7530_ATA1 + (i * 4), reg[i]);
396 /* Setup TX circuit including relevant PAD and driving */
398 mt7530_pad_clk_setup(struct dsa_switch *ds, phy_interface_t interface)
400 struct mt7530_priv *priv = ds->priv;
401 u32 ncpo1, ssc_delta, trgint, i, xtal;
403 xtal = mt7530_read(priv, MT7530_MHWTRAP) & HWTRAP_XTAL_MASK;
405 if (xtal == HWTRAP_XTAL_20MHZ) {
407 "%s: MT7530 with a 20MHz XTAL is not supported!\n",
413 case PHY_INTERFACE_MODE_RGMII:
415 /* PLL frequency: 125MHz */
418 case PHY_INTERFACE_MODE_TRGMII:
420 if (priv->id == ID_MT7621) {
421 /* PLL frequency: 150MHz: 1.2GBit */
422 if (xtal == HWTRAP_XTAL_40MHZ)
424 if (xtal == HWTRAP_XTAL_25MHZ)
426 } else { /* PLL frequency: 250MHz: 2.0Gbit */
427 if (xtal == HWTRAP_XTAL_40MHZ)
429 if (xtal == HWTRAP_XTAL_25MHZ)
434 dev_err(priv->dev, "xMII interface %d not supported\n",
439 if (xtal == HWTRAP_XTAL_25MHZ)
444 mt7530_rmw(priv, MT7530_P6ECR, P6_INTF_MODE_MASK,
445 P6_INTF_MODE(trgint));
447 /* Lower Tx Driving for TRGMII path */
448 for (i = 0 ; i < NUM_TRGMII_CTRL ; i++)
449 mt7530_write(priv, MT7530_TRGMII_TD_ODT(i),
450 TD_DM_DRVP(8) | TD_DM_DRVN(8));
452 /* Disable MT7530 core and TRGMII Tx clocks */
453 core_clear(priv, CORE_TRGMII_GSW_CLK_CG,
454 REG_GSWCK_EN | REG_TRGMIICK_EN);
456 /* Setup core clock for MT7530 */
458 core_write(priv, CORE_GSWPLL_GRP1, 0);
460 /* Set core clock into 500Mhz */
461 core_write(priv, CORE_GSWPLL_GRP2,
462 RG_GSWPLL_POSDIV_500M(1) |
463 RG_GSWPLL_FBKDIV_500M(25));
466 core_write(priv, CORE_GSWPLL_GRP1,
468 RG_GSWPLL_POSDIV_200M(2) |
469 RG_GSWPLL_FBKDIV_200M(32));
471 /* Setup the MT7530 TRGMII Tx Clock */
472 core_write(priv, CORE_PLL_GROUP5, RG_LCDDS_PCW_NCPO1(ncpo1));
473 core_write(priv, CORE_PLL_GROUP6, RG_LCDDS_PCW_NCPO0(0));
474 core_write(priv, CORE_PLL_GROUP10, RG_LCDDS_SSC_DELTA(ssc_delta));
475 core_write(priv, CORE_PLL_GROUP11, RG_LCDDS_SSC_DELTA1(ssc_delta));
476 core_write(priv, CORE_PLL_GROUP4,
477 RG_SYSPLL_DDSFBK_EN | RG_SYSPLL_BIAS_EN |
478 RG_SYSPLL_BIAS_LPF_EN);
479 core_write(priv, CORE_PLL_GROUP2,
480 RG_SYSPLL_EN_NORMAL | RG_SYSPLL_VODEN |
481 RG_SYSPLL_POSDIV(1));
482 core_write(priv, CORE_PLL_GROUP7,
483 RG_LCDDS_PCW_NCPO_CHG | RG_LCCDS_C(3) |
484 RG_LCDDS_PWDB | RG_LCDDS_ISO_EN);
486 /* Enable MT7530 core and TRGMII Tx clocks */
487 core_set(priv, CORE_TRGMII_GSW_CLK_CG,
488 REG_GSWCK_EN | REG_TRGMIICK_EN);
491 for (i = 0 ; i < NUM_TRGMII_CTRL; i++)
492 mt7530_rmw(priv, MT7530_TRGMII_RD(i),
493 RD_TAP_MASK, RD_TAP(16));
497 static bool mt7531_dual_sgmii_supported(struct mt7530_priv *priv)
501 val = mt7530_read(priv, MT7531_TOP_SIG_SR);
503 return (val & PAD_DUAL_SGMII_EN) != 0;
507 mt7531_pad_setup(struct dsa_switch *ds, phy_interface_t interface)
509 struct mt7530_priv *priv = ds->priv;
515 if (mt7531_dual_sgmii_supported(priv))
518 val = mt7530_read(priv, MT7531_CREV);
519 top_sig = mt7530_read(priv, MT7531_TOP_SIG_SR);
520 hwstrap = mt7530_read(priv, MT7531_HWTRAP);
521 if ((val & CHIP_REV_M) > 0)
522 xtal = (top_sig & PAD_MCM_SMI_EN) ? HWTRAP_XTAL_FSEL_40MHZ :
523 HWTRAP_XTAL_FSEL_25MHZ;
525 xtal = hwstrap & HWTRAP_XTAL_FSEL_MASK;
527 /* Step 1 : Disable MT7531 COREPLL */
528 val = mt7530_read(priv, MT7531_PLLGP_EN);
530 mt7530_write(priv, MT7531_PLLGP_EN, val);
532 /* Step 2: switch to XTAL output */
533 val = mt7530_read(priv, MT7531_PLLGP_EN);
535 mt7530_write(priv, MT7531_PLLGP_EN, val);
537 val = mt7530_read(priv, MT7531_PLLGP_CR0);
538 val &= ~RG_COREPLL_EN;
539 mt7530_write(priv, MT7531_PLLGP_CR0, val);
541 /* Step 3: disable PLLGP and enable program PLLGP */
542 val = mt7530_read(priv, MT7531_PLLGP_EN);
544 mt7530_write(priv, MT7531_PLLGP_EN, val);
546 /* Step 4: program COREPLL output frequency to 500MHz */
547 val = mt7530_read(priv, MT7531_PLLGP_CR0);
548 val &= ~RG_COREPLL_POSDIV_M;
549 val |= 2 << RG_COREPLL_POSDIV_S;
550 mt7530_write(priv, MT7531_PLLGP_CR0, val);
551 usleep_range(25, 35);
554 case HWTRAP_XTAL_FSEL_25MHZ:
555 val = mt7530_read(priv, MT7531_PLLGP_CR0);
556 val &= ~RG_COREPLL_SDM_PCW_M;
557 val |= 0x140000 << RG_COREPLL_SDM_PCW_S;
558 mt7530_write(priv, MT7531_PLLGP_CR0, val);
560 case HWTRAP_XTAL_FSEL_40MHZ:
561 val = mt7530_read(priv, MT7531_PLLGP_CR0);
562 val &= ~RG_COREPLL_SDM_PCW_M;
563 val |= 0x190000 << RG_COREPLL_SDM_PCW_S;
564 mt7530_write(priv, MT7531_PLLGP_CR0, val);
568 /* Set feedback divide ratio update signal to high */
569 val = mt7530_read(priv, MT7531_PLLGP_CR0);
570 val |= RG_COREPLL_SDM_PCW_CHG;
571 mt7530_write(priv, MT7531_PLLGP_CR0, val);
572 /* Wait for at least 16 XTAL clocks */
573 usleep_range(10, 20);
575 /* Step 5: set feedback divide ratio update signal to low */
576 val = mt7530_read(priv, MT7531_PLLGP_CR0);
577 val &= ~RG_COREPLL_SDM_PCW_CHG;
578 mt7530_write(priv, MT7531_PLLGP_CR0, val);
580 /* Enable 325M clock for SGMII */
581 mt7530_write(priv, MT7531_ANA_PLLGP_CR5, 0xad0000);
583 /* Enable 250SSC clock for RGMII */
584 mt7530_write(priv, MT7531_ANA_PLLGP_CR2, 0x4f40000);
586 /* Step 6: Enable MT7531 PLL */
587 val = mt7530_read(priv, MT7531_PLLGP_CR0);
588 val |= RG_COREPLL_EN;
589 mt7530_write(priv, MT7531_PLLGP_CR0, val);
591 val = mt7530_read(priv, MT7531_PLLGP_EN);
593 mt7530_write(priv, MT7531_PLLGP_EN, val);
594 usleep_range(25, 35);
600 mt7530_mib_reset(struct dsa_switch *ds)
602 struct mt7530_priv *priv = ds->priv;
604 mt7530_write(priv, MT7530_MIB_CCR, CCR_MIB_FLUSH);
605 mt7530_write(priv, MT7530_MIB_CCR, CCR_MIB_ACTIVATE);
608 static int mt7530_phy_read(struct mt7530_priv *priv, int port, int regnum)
610 return mdiobus_read_nested(priv->bus, port, regnum);
613 static int mt7530_phy_write(struct mt7530_priv *priv, int port, int regnum,
616 return mdiobus_write_nested(priv->bus, port, regnum, val);
620 mt7531_ind_c45_phy_read(struct mt7530_priv *priv, int port, int devad,
623 struct mii_bus *bus = priv->bus;
624 struct mt7530_dummy_poll p;
628 INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
630 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
632 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
633 !(val & MT7531_PHY_ACS_ST), 20, 100000);
635 dev_err(priv->dev, "poll timeout\n");
639 reg = MT7531_MDIO_CL45_ADDR | MT7531_MDIO_PHY_ADDR(port) |
640 MT7531_MDIO_DEV_ADDR(devad) | regnum;
641 mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
643 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
644 !(val & MT7531_PHY_ACS_ST), 20, 100000);
646 dev_err(priv->dev, "poll timeout\n");
650 reg = MT7531_MDIO_CL45_READ | MT7531_MDIO_PHY_ADDR(port) |
651 MT7531_MDIO_DEV_ADDR(devad);
652 mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
654 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
655 !(val & MT7531_PHY_ACS_ST), 20, 100000);
657 dev_err(priv->dev, "poll timeout\n");
661 ret = val & MT7531_MDIO_RW_DATA_MASK;
663 mutex_unlock(&bus->mdio_lock);
669 mt7531_ind_c45_phy_write(struct mt7530_priv *priv, int port, int devad,
670 int regnum, u32 data)
672 struct mii_bus *bus = priv->bus;
673 struct mt7530_dummy_poll p;
677 INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
679 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
681 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
682 !(val & MT7531_PHY_ACS_ST), 20, 100000);
684 dev_err(priv->dev, "poll timeout\n");
688 reg = MT7531_MDIO_CL45_ADDR | MT7531_MDIO_PHY_ADDR(port) |
689 MT7531_MDIO_DEV_ADDR(devad) | regnum;
690 mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
692 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
693 !(val & MT7531_PHY_ACS_ST), 20, 100000);
695 dev_err(priv->dev, "poll timeout\n");
699 reg = MT7531_MDIO_CL45_WRITE | MT7531_MDIO_PHY_ADDR(port) |
700 MT7531_MDIO_DEV_ADDR(devad) | data;
701 mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
703 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
704 !(val & MT7531_PHY_ACS_ST), 20, 100000);
706 dev_err(priv->dev, "poll timeout\n");
711 mutex_unlock(&bus->mdio_lock);
717 mt7531_ind_c22_phy_read(struct mt7530_priv *priv, int port, int regnum)
719 struct mii_bus *bus = priv->bus;
720 struct mt7530_dummy_poll p;
724 INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
726 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
728 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
729 !(val & MT7531_PHY_ACS_ST), 20, 100000);
731 dev_err(priv->dev, "poll timeout\n");
735 val = MT7531_MDIO_CL22_READ | MT7531_MDIO_PHY_ADDR(port) |
736 MT7531_MDIO_REG_ADDR(regnum);
738 mt7530_mii_write(priv, MT7531_PHY_IAC, val | MT7531_PHY_ACS_ST);
740 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
741 !(val & MT7531_PHY_ACS_ST), 20, 100000);
743 dev_err(priv->dev, "poll timeout\n");
747 ret = val & MT7531_MDIO_RW_DATA_MASK;
749 mutex_unlock(&bus->mdio_lock);
755 mt7531_ind_c22_phy_write(struct mt7530_priv *priv, int port, int regnum,
758 struct mii_bus *bus = priv->bus;
759 struct mt7530_dummy_poll p;
763 INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
765 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
767 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, reg,
768 !(reg & MT7531_PHY_ACS_ST), 20, 100000);
770 dev_err(priv->dev, "poll timeout\n");
774 reg = MT7531_MDIO_CL22_WRITE | MT7531_MDIO_PHY_ADDR(port) |
775 MT7531_MDIO_REG_ADDR(regnum) | data;
777 mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
779 ret = readx_poll_timeout(_mt7530_unlocked_read, &p, reg,
780 !(reg & MT7531_PHY_ACS_ST), 20, 100000);
782 dev_err(priv->dev, "poll timeout\n");
787 mutex_unlock(&bus->mdio_lock);
793 mt7531_ind_phy_read(struct mt7530_priv *priv, int port, int regnum)
798 if (regnum & MII_ADDR_C45) {
799 devad = (regnum >> MII_DEVADDR_C45_SHIFT) & 0x1f;
800 ret = mt7531_ind_c45_phy_read(priv, port, devad,
801 regnum & MII_REGADDR_C45_MASK);
803 ret = mt7531_ind_c22_phy_read(priv, port, regnum);
810 mt7531_ind_phy_write(struct mt7530_priv *priv, int port, int regnum,
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 mt753x_phy_read(struct mii_bus *bus, int port, int regnum)
831 struct mt7530_priv *priv = bus->priv;
833 return priv->info->phy_read(priv, port, regnum);
837 mt753x_phy_write(struct mii_bus *bus, int port, int regnum, u16 val)
839 struct mt7530_priv *priv = bus->priv;
841 return priv->info->phy_write(priv, port, regnum, val);
845 mt7530_get_strings(struct dsa_switch *ds, int port, u32 stringset,
850 if (stringset != ETH_SS_STATS)
853 for (i = 0; i < ARRAY_SIZE(mt7530_mib); i++)
854 strncpy(data + i * ETH_GSTRING_LEN, mt7530_mib[i].name,
859 mt7530_get_ethtool_stats(struct dsa_switch *ds, int port,
862 struct mt7530_priv *priv = ds->priv;
863 const struct mt7530_mib_desc *mib;
867 for (i = 0; i < ARRAY_SIZE(mt7530_mib); i++) {
868 mib = &mt7530_mib[i];
869 reg = MT7530_PORT_MIB_COUNTER(port) + mib->offset;
871 data[i] = mt7530_read(priv, reg);
872 if (mib->size == 2) {
873 hi = mt7530_read(priv, reg + 4);
880 mt7530_get_sset_count(struct dsa_switch *ds, int port, int sset)
882 if (sset != ETH_SS_STATS)
885 return ARRAY_SIZE(mt7530_mib);
889 mt7530_set_ageing_time(struct dsa_switch *ds, unsigned int msecs)
891 struct mt7530_priv *priv = ds->priv;
892 unsigned int secs = msecs / 1000;
893 unsigned int tmp_age_count;
894 unsigned int error = -1;
895 unsigned int age_count;
896 unsigned int age_unit;
898 /* Applied timer is (AGE_CNT + 1) * (AGE_UNIT + 1) seconds */
899 if (secs < 1 || secs > (AGE_CNT_MAX + 1) * (AGE_UNIT_MAX + 1))
902 /* iterate through all possible age_count to find the closest pair */
903 for (tmp_age_count = 0; tmp_age_count <= AGE_CNT_MAX; ++tmp_age_count) {
904 unsigned int tmp_age_unit = secs / (tmp_age_count + 1) - 1;
906 if (tmp_age_unit <= AGE_UNIT_MAX) {
907 unsigned int tmp_error = secs -
908 (tmp_age_count + 1) * (tmp_age_unit + 1);
910 /* found a closer pair */
911 if (error > tmp_error) {
913 age_count = tmp_age_count;
914 age_unit = tmp_age_unit;
917 /* found the exact match, so break the loop */
923 mt7530_write(priv, MT7530_AAC, AGE_CNT(age_count) | AGE_UNIT(age_unit));
928 static void mt7530_setup_port5(struct dsa_switch *ds, phy_interface_t interface)
930 struct mt7530_priv *priv = ds->priv;
934 mutex_lock(&priv->reg_mutex);
936 val = mt7530_read(priv, MT7530_MHWTRAP);
938 val |= MHWTRAP_MANUAL | MHWTRAP_P5_MAC_SEL | MHWTRAP_P5_DIS;
939 val &= ~MHWTRAP_P5_RGMII_MODE & ~MHWTRAP_PHY0_SEL;
941 switch (priv->p5_intf_sel) {
942 case P5_INTF_SEL_PHY_P0:
943 /* MT7530_P5_MODE_GPHY_P0: 2nd GMAC -> P5 -> P0 */
944 val |= MHWTRAP_PHY0_SEL;
946 case P5_INTF_SEL_PHY_P4:
947 /* MT7530_P5_MODE_GPHY_P4: 2nd GMAC -> P5 -> P4 */
948 val &= ~MHWTRAP_P5_MAC_SEL & ~MHWTRAP_P5_DIS;
950 /* Setup the MAC by default for the cpu port */
951 mt7530_write(priv, MT7530_PMCR_P(5), 0x56300);
953 case P5_INTF_SEL_GMAC5:
954 /* MT7530_P5_MODE_GMAC: P5 -> External phy or 2nd GMAC */
955 val &= ~MHWTRAP_P5_DIS;
958 interface = PHY_INTERFACE_MODE_NA;
961 dev_err(ds->dev, "Unsupported p5_intf_sel %d\n",
966 /* Setup RGMII settings */
967 if (phy_interface_mode_is_rgmii(interface)) {
968 val |= MHWTRAP_P5_RGMII_MODE;
970 /* P5 RGMII RX Clock Control: delay setting for 1000M */
971 mt7530_write(priv, MT7530_P5RGMIIRXCR, CSR_RGMII_EDGE_ALIGN);
973 /* Don't set delay in DSA mode */
974 if (!dsa_is_dsa_port(priv->ds, 5) &&
975 (interface == PHY_INTERFACE_MODE_RGMII_TXID ||
976 interface == PHY_INTERFACE_MODE_RGMII_ID))
977 tx_delay = 4; /* n * 0.5 ns */
979 /* P5 RGMII TX Clock Control: delay x */
980 mt7530_write(priv, MT7530_P5RGMIITXCR,
981 CSR_RGMII_TXC_CFG(0x10 + tx_delay));
983 /* reduce P5 RGMII Tx driving, 8mA */
984 mt7530_write(priv, MT7530_IO_DRV_CR,
985 P5_IO_CLK_DRV(1) | P5_IO_DATA_DRV(1));
988 mt7530_write(priv, MT7530_MHWTRAP, val);
990 dev_dbg(ds->dev, "Setup P5, HWTRAP=0x%x, intf_sel=%s, phy-mode=%s\n",
991 val, p5_intf_modes(priv->p5_intf_sel), phy_modes(interface));
993 priv->p5_interface = interface;
996 mutex_unlock(&priv->reg_mutex);
1000 mt753x_cpu_port_enable(struct dsa_switch *ds, int port)
1002 struct mt7530_priv *priv = ds->priv;
1005 /* Setup max capability of CPU port at first */
1006 if (priv->info->cpu_port_config) {
1007 ret = priv->info->cpu_port_config(ds, port);
1012 /* Enable Mediatek header mode on the cpu port */
1013 mt7530_write(priv, MT7530_PVC_P(port),
1016 /* Disable flooding by default */
1017 mt7530_rmw(priv, MT7530_MFC, BC_FFP_MASK | UNM_FFP_MASK | UNU_FFP_MASK,
1018 BC_FFP(BIT(port)) | UNM_FFP(BIT(port)) | UNU_FFP(BIT(port)));
1020 /* Set CPU port number */
1021 if (priv->id == ID_MT7621)
1022 mt7530_rmw(priv, MT7530_MFC, CPU_MASK, CPU_EN | CPU_PORT(port));
1024 /* CPU port gets connected to all user ports of
1027 mt7530_write(priv, MT7530_PCR_P(port),
1028 PCR_MATRIX(dsa_user_ports(priv->ds)));
1030 /* Set to fallback mode for independent VLAN learning */
1031 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
1032 MT7530_PORT_FALLBACK_MODE);
1038 mt7530_port_enable(struct dsa_switch *ds, int port,
1039 struct phy_device *phy)
1041 struct dsa_port *dp = dsa_to_port(ds, port);
1042 struct mt7530_priv *priv = ds->priv;
1044 mutex_lock(&priv->reg_mutex);
1046 /* Allow the user port gets connected to the cpu port and also
1047 * restore the port matrix if the port is the member of a certain
1050 if (dsa_port_is_user(dp)) {
1051 struct dsa_port *cpu_dp = dp->cpu_dp;
1053 priv->ports[port].pm |= PCR_MATRIX(BIT(cpu_dp->index));
1055 priv->ports[port].enable = true;
1056 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK,
1057 priv->ports[port].pm);
1058 mt7530_clear(priv, MT7530_PMCR_P(port), PMCR_LINK_SETTINGS_MASK);
1060 mutex_unlock(&priv->reg_mutex);
1066 mt7530_port_disable(struct dsa_switch *ds, int port)
1068 struct mt7530_priv *priv = ds->priv;
1070 mutex_lock(&priv->reg_mutex);
1072 /* Clear up all port matrix which could be restored in the next
1073 * enablement for the port.
1075 priv->ports[port].enable = false;
1076 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK,
1078 mt7530_clear(priv, MT7530_PMCR_P(port), PMCR_LINK_SETTINGS_MASK);
1080 mutex_unlock(&priv->reg_mutex);
1084 mt7530_port_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
1086 struct mt7530_priv *priv = ds->priv;
1087 struct mii_bus *bus = priv->bus;
1091 /* When a new MTU is set, DSA always set the CPU port's MTU to the
1092 * largest MTU of the slave ports. Because the switch only has a global
1093 * RX length register, only allowing CPU port here is enough.
1095 if (!dsa_is_cpu_port(ds, port))
1098 mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
1100 val = mt7530_mii_read(priv, MT7530_GMACCR);
1101 val &= ~MAX_RX_PKT_LEN_MASK;
1103 /* RX length also includes Ethernet header, MTK tag, and FCS length */
1104 length = new_mtu + ETH_HLEN + MTK_HDR_LEN + ETH_FCS_LEN;
1105 if (length <= 1522) {
1106 val |= MAX_RX_PKT_LEN_1522;
1107 } else if (length <= 1536) {
1108 val |= MAX_RX_PKT_LEN_1536;
1109 } else if (length <= 1552) {
1110 val |= MAX_RX_PKT_LEN_1552;
1112 val &= ~MAX_RX_JUMBO_MASK;
1113 val |= MAX_RX_JUMBO(DIV_ROUND_UP(length, 1024));
1114 val |= MAX_RX_PKT_LEN_JUMBO;
1117 mt7530_mii_write(priv, MT7530_GMACCR, val);
1119 mutex_unlock(&bus->mdio_lock);
1125 mt7530_port_max_mtu(struct dsa_switch *ds, int port)
1127 return MT7530_MAX_MTU;
1131 mt7530_stp_state_set(struct dsa_switch *ds, int port, u8 state)
1133 struct mt7530_priv *priv = ds->priv;
1137 case BR_STATE_DISABLED:
1138 stp_state = MT7530_STP_DISABLED;
1140 case BR_STATE_BLOCKING:
1141 stp_state = MT7530_STP_BLOCKING;
1143 case BR_STATE_LISTENING:
1144 stp_state = MT7530_STP_LISTENING;
1146 case BR_STATE_LEARNING:
1147 stp_state = MT7530_STP_LEARNING;
1149 case BR_STATE_FORWARDING:
1151 stp_state = MT7530_STP_FORWARDING;
1155 mt7530_rmw(priv, MT7530_SSP_P(port), FID_PST_MASK(FID_BRIDGED),
1156 FID_PST(FID_BRIDGED, stp_state));
1160 mt7530_port_pre_bridge_flags(struct dsa_switch *ds, int port,
1161 struct switchdev_brport_flags flags,
1162 struct netlink_ext_ack *extack)
1164 if (flags.mask & ~(BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD |
1172 mt7530_port_bridge_flags(struct dsa_switch *ds, int port,
1173 struct switchdev_brport_flags flags,
1174 struct netlink_ext_ack *extack)
1176 struct mt7530_priv *priv = ds->priv;
1178 if (flags.mask & BR_LEARNING)
1179 mt7530_rmw(priv, MT7530_PSC_P(port), SA_DIS,
1180 flags.val & BR_LEARNING ? 0 : SA_DIS);
1182 if (flags.mask & BR_FLOOD)
1183 mt7530_rmw(priv, MT7530_MFC, UNU_FFP(BIT(port)),
1184 flags.val & BR_FLOOD ? UNU_FFP(BIT(port)) : 0);
1186 if (flags.mask & BR_MCAST_FLOOD)
1187 mt7530_rmw(priv, MT7530_MFC, UNM_FFP(BIT(port)),
1188 flags.val & BR_MCAST_FLOOD ? UNM_FFP(BIT(port)) : 0);
1190 if (flags.mask & BR_BCAST_FLOOD)
1191 mt7530_rmw(priv, MT7530_MFC, BC_FFP(BIT(port)),
1192 flags.val & BR_BCAST_FLOOD ? BC_FFP(BIT(port)) : 0);
1198 mt7530_port_bridge_join(struct dsa_switch *ds, int port,
1199 struct dsa_bridge bridge, bool *tx_fwd_offload,
1200 struct netlink_ext_ack *extack)
1202 struct dsa_port *dp = dsa_to_port(ds, port), *other_dp;
1203 struct dsa_port *cpu_dp = dp->cpu_dp;
1204 u32 port_bitmap = BIT(cpu_dp->index);
1205 struct mt7530_priv *priv = ds->priv;
1207 mutex_lock(&priv->reg_mutex);
1209 dsa_switch_for_each_user_port(other_dp, ds) {
1210 int other_port = other_dp->index;
1215 /* Add this port to the port matrix of the other ports in the
1216 * same bridge. If the port is disabled, port matrix is kept
1217 * and not being setup until the port becomes enabled.
1219 if (!dsa_port_offloads_bridge(other_dp, &bridge))
1222 if (priv->ports[other_port].enable)
1223 mt7530_set(priv, MT7530_PCR_P(other_port),
1224 PCR_MATRIX(BIT(port)));
1225 priv->ports[other_port].pm |= PCR_MATRIX(BIT(port));
1227 port_bitmap |= BIT(other_port);
1230 /* Add the all other ports to this port matrix. */
1231 if (priv->ports[port].enable)
1232 mt7530_rmw(priv, MT7530_PCR_P(port),
1233 PCR_MATRIX_MASK, PCR_MATRIX(port_bitmap));
1234 priv->ports[port].pm |= PCR_MATRIX(port_bitmap);
1236 /* Set to fallback mode for independent VLAN learning */
1237 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
1238 MT7530_PORT_FALLBACK_MODE);
1240 mutex_unlock(&priv->reg_mutex);
1246 mt7530_port_set_vlan_unaware(struct dsa_switch *ds, int port)
1248 struct mt7530_priv *priv = ds->priv;
1249 bool all_user_ports_removed = true;
1252 /* This is called after .port_bridge_leave when leaving a VLAN-aware
1253 * bridge. Don't set standalone ports to fallback mode.
1255 if (dsa_port_bridge_dev_get(dsa_to_port(ds, port)))
1256 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
1257 MT7530_PORT_FALLBACK_MODE);
1259 mt7530_rmw(priv, MT7530_PVC_P(port),
1260 VLAN_ATTR_MASK | PVC_EG_TAG_MASK | ACC_FRM_MASK,
1261 VLAN_ATTR(MT7530_VLAN_TRANSPARENT) |
1262 PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT) |
1263 MT7530_VLAN_ACC_ALL);
1266 mt7530_rmw(priv, MT7530_PPBV1_P(port), G0_PORT_VID_MASK,
1269 for (i = 0; i < MT7530_NUM_PORTS; i++) {
1270 if (dsa_is_user_port(ds, i) &&
1271 dsa_port_is_vlan_filtering(dsa_to_port(ds, i))) {
1272 all_user_ports_removed = false;
1277 /* CPU port also does the same thing until all user ports belonging to
1278 * the CPU port get out of VLAN filtering mode.
1280 if (all_user_ports_removed) {
1281 struct dsa_port *dp = dsa_to_port(ds, port);
1282 struct dsa_port *cpu_dp = dp->cpu_dp;
1284 mt7530_write(priv, MT7530_PCR_P(cpu_dp->index),
1285 PCR_MATRIX(dsa_user_ports(priv->ds)));
1286 mt7530_write(priv, MT7530_PVC_P(cpu_dp->index), PORT_SPEC_TAG
1287 | PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
1292 mt7530_port_set_vlan_aware(struct dsa_switch *ds, int port)
1294 struct mt7530_priv *priv = ds->priv;
1296 /* Trapped into security mode allows packet forwarding through VLAN
1299 if (dsa_is_user_port(ds, port)) {
1300 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
1301 MT7530_PORT_SECURITY_MODE);
1302 mt7530_rmw(priv, MT7530_PPBV1_P(port), G0_PORT_VID_MASK,
1303 G0_PORT_VID(priv->ports[port].pvid));
1305 /* Only accept tagged frames if PVID is not set */
1306 if (!priv->ports[port].pvid)
1307 mt7530_rmw(priv, MT7530_PVC_P(port), ACC_FRM_MASK,
1308 MT7530_VLAN_ACC_TAGGED);
1311 /* Set the port as a user port which is to be able to recognize VID
1312 * from incoming packets before fetching entry within the VLAN table.
1314 mt7530_rmw(priv, MT7530_PVC_P(port), VLAN_ATTR_MASK | PVC_EG_TAG_MASK,
1315 VLAN_ATTR(MT7530_VLAN_USER) |
1316 PVC_EG_TAG(MT7530_VLAN_EG_DISABLED));
1320 mt7530_port_bridge_leave(struct dsa_switch *ds, int port,
1321 struct dsa_bridge bridge)
1323 struct dsa_port *dp = dsa_to_port(ds, port), *other_dp;
1324 struct dsa_port *cpu_dp = dp->cpu_dp;
1325 struct mt7530_priv *priv = ds->priv;
1327 mutex_lock(&priv->reg_mutex);
1329 dsa_switch_for_each_user_port(other_dp, ds) {
1330 int other_port = other_dp->index;
1335 /* Remove this port from the port matrix of the other ports
1336 * in the same bridge. If the port is disabled, port matrix
1337 * is kept and not being setup until the port becomes enabled.
1339 if (!dsa_port_offloads_bridge(other_dp, &bridge))
1342 if (priv->ports[other_port].enable)
1343 mt7530_clear(priv, MT7530_PCR_P(other_port),
1344 PCR_MATRIX(BIT(port)));
1345 priv->ports[other_port].pm &= ~PCR_MATRIX(BIT(port));
1348 /* Set the cpu port to be the only one in the port matrix of
1351 if (priv->ports[port].enable)
1352 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK,
1353 PCR_MATRIX(BIT(cpu_dp->index)));
1354 priv->ports[port].pm = PCR_MATRIX(BIT(cpu_dp->index));
1356 /* When a port is removed from the bridge, the port would be set up
1357 * back to the default as is at initial boot which is a VLAN-unaware
1360 mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
1361 MT7530_PORT_MATRIX_MODE);
1363 mutex_unlock(&priv->reg_mutex);
1367 mt7530_port_fdb_add(struct dsa_switch *ds, int port,
1368 const unsigned char *addr, u16 vid,
1371 struct mt7530_priv *priv = ds->priv;
1373 u8 port_mask = BIT(port);
1375 mutex_lock(&priv->reg_mutex);
1376 mt7530_fdb_write(priv, vid, port_mask, addr, -1, STATIC_ENT);
1377 ret = mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL);
1378 mutex_unlock(&priv->reg_mutex);
1384 mt7530_port_fdb_del(struct dsa_switch *ds, int port,
1385 const unsigned char *addr, u16 vid,
1388 struct mt7530_priv *priv = ds->priv;
1390 u8 port_mask = BIT(port);
1392 mutex_lock(&priv->reg_mutex);
1393 mt7530_fdb_write(priv, vid, port_mask, addr, -1, STATIC_EMP);
1394 ret = mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL);
1395 mutex_unlock(&priv->reg_mutex);
1401 mt7530_port_fdb_dump(struct dsa_switch *ds, int port,
1402 dsa_fdb_dump_cb_t *cb, void *data)
1404 struct mt7530_priv *priv = ds->priv;
1405 struct mt7530_fdb _fdb = { 0 };
1406 int cnt = MT7530_NUM_FDB_RECORDS;
1410 mutex_lock(&priv->reg_mutex);
1412 ret = mt7530_fdb_cmd(priv, MT7530_FDB_START, &rsp);
1417 if (rsp & ATC_SRCH_HIT) {
1418 mt7530_fdb_read(priv, &_fdb);
1419 if (_fdb.port_mask & BIT(port)) {
1420 ret = cb(_fdb.mac, _fdb.vid, _fdb.noarp,
1427 !(rsp & ATC_SRCH_END) &&
1428 !mt7530_fdb_cmd(priv, MT7530_FDB_NEXT, &rsp));
1430 mutex_unlock(&priv->reg_mutex);
1436 mt7530_port_mdb_add(struct dsa_switch *ds, int port,
1437 const struct switchdev_obj_port_mdb *mdb,
1440 struct mt7530_priv *priv = ds->priv;
1441 const u8 *addr = mdb->addr;
1446 mutex_lock(&priv->reg_mutex);
1448 mt7530_fdb_write(priv, vid, 0, addr, 0, STATIC_EMP);
1449 if (!mt7530_fdb_cmd(priv, MT7530_FDB_READ, NULL))
1450 port_mask = (mt7530_read(priv, MT7530_ATRD) >> PORT_MAP)
1453 port_mask |= BIT(port);
1454 mt7530_fdb_write(priv, vid, port_mask, addr, -1, STATIC_ENT);
1455 ret = mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL);
1457 mutex_unlock(&priv->reg_mutex);
1463 mt7530_port_mdb_del(struct dsa_switch *ds, int port,
1464 const struct switchdev_obj_port_mdb *mdb,
1467 struct mt7530_priv *priv = ds->priv;
1468 const u8 *addr = mdb->addr;
1473 mutex_lock(&priv->reg_mutex);
1475 mt7530_fdb_write(priv, vid, 0, addr, 0, STATIC_EMP);
1476 if (!mt7530_fdb_cmd(priv, MT7530_FDB_READ, NULL))
1477 port_mask = (mt7530_read(priv, MT7530_ATRD) >> PORT_MAP)
1480 port_mask &= ~BIT(port);
1481 mt7530_fdb_write(priv, vid, port_mask, addr, -1,
1482 port_mask ? STATIC_ENT : STATIC_EMP);
1483 ret = mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL);
1485 mutex_unlock(&priv->reg_mutex);
1491 mt7530_vlan_cmd(struct mt7530_priv *priv, enum mt7530_vlan_cmd cmd, u16 vid)
1493 struct mt7530_dummy_poll p;
1497 val = VTCR_BUSY | VTCR_FUNC(cmd) | vid;
1498 mt7530_write(priv, MT7530_VTCR, val);
1500 INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_VTCR);
1501 ret = readx_poll_timeout(_mt7530_read, &p, val,
1502 !(val & VTCR_BUSY), 20, 20000);
1504 dev_err(priv->dev, "poll timeout\n");
1508 val = mt7530_read(priv, MT7530_VTCR);
1509 if (val & VTCR_INVALID) {
1510 dev_err(priv->dev, "read VTCR invalid\n");
1518 mt7530_port_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering,
1519 struct netlink_ext_ack *extack)
1521 struct dsa_port *dp = dsa_to_port(ds, port);
1522 struct dsa_port *cpu_dp = dp->cpu_dp;
1524 if (vlan_filtering) {
1525 /* The port is being kept as VLAN-unaware port when bridge is
1526 * set up with vlan_filtering not being set, Otherwise, the
1527 * port and the corresponding CPU port is required the setup
1528 * for becoming a VLAN-aware port.
1530 mt7530_port_set_vlan_aware(ds, port);
1531 mt7530_port_set_vlan_aware(ds, cpu_dp->index);
1533 mt7530_port_set_vlan_unaware(ds, port);
1540 mt7530_hw_vlan_add(struct mt7530_priv *priv,
1541 struct mt7530_hw_vlan_entry *entry)
1543 struct dsa_port *dp = dsa_to_port(priv->ds, entry->port);
1547 new_members = entry->old_members | BIT(entry->port);
1549 /* Validate the entry with independent learning, create egress tag per
1550 * VLAN and joining the port as one of the port members.
1552 val = IVL_MAC | VTAG_EN | PORT_MEM(new_members) | FID(FID_BRIDGED) |
1554 mt7530_write(priv, MT7530_VAWD1, val);
1556 /* Decide whether adding tag or not for those outgoing packets from the
1557 * port inside the VLAN.
1558 * CPU port is always taken as a tagged port for serving more than one
1559 * VLANs across and also being applied with egress type stack mode for
1560 * that VLAN tags would be appended after hardware special tag used as
1563 if (dsa_port_is_cpu(dp))
1564 val = MT7530_VLAN_EGRESS_STACK;
1565 else if (entry->untagged)
1566 val = MT7530_VLAN_EGRESS_UNTAG;
1568 val = MT7530_VLAN_EGRESS_TAG;
1569 mt7530_rmw(priv, MT7530_VAWD2,
1570 ETAG_CTRL_P_MASK(entry->port),
1571 ETAG_CTRL_P(entry->port, val));
1575 mt7530_hw_vlan_del(struct mt7530_priv *priv,
1576 struct mt7530_hw_vlan_entry *entry)
1581 new_members = entry->old_members & ~BIT(entry->port);
1583 val = mt7530_read(priv, MT7530_VAWD1);
1584 if (!(val & VLAN_VALID)) {
1586 "Cannot be deleted due to invalid entry\n");
1591 val = IVL_MAC | VTAG_EN | PORT_MEM(new_members) |
1593 mt7530_write(priv, MT7530_VAWD1, val);
1595 mt7530_write(priv, MT7530_VAWD1, 0);
1596 mt7530_write(priv, MT7530_VAWD2, 0);
1601 mt7530_hw_vlan_update(struct mt7530_priv *priv, u16 vid,
1602 struct mt7530_hw_vlan_entry *entry,
1603 mt7530_vlan_op vlan_op)
1608 mt7530_vlan_cmd(priv, MT7530_VTCR_RD_VID, vid);
1610 val = mt7530_read(priv, MT7530_VAWD1);
1612 entry->old_members = (val >> PORT_MEM_SHFT) & PORT_MEM_MASK;
1614 /* Manipulate entry */
1615 vlan_op(priv, entry);
1617 /* Flush result to hardware */
1618 mt7530_vlan_cmd(priv, MT7530_VTCR_WR_VID, vid);
1622 mt7530_setup_vlan0(struct mt7530_priv *priv)
1626 /* Validate the entry with independent learning, keep the original
1627 * ingress tag attribute.
1629 val = IVL_MAC | EG_CON | PORT_MEM(MT7530_ALL_MEMBERS) | FID(FID_BRIDGED) |
1631 mt7530_write(priv, MT7530_VAWD1, val);
1633 return mt7530_vlan_cmd(priv, MT7530_VTCR_WR_VID, 0);
1637 mt7530_port_vlan_add(struct dsa_switch *ds, int port,
1638 const struct switchdev_obj_port_vlan *vlan,
1639 struct netlink_ext_ack *extack)
1641 bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
1642 bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
1643 struct mt7530_hw_vlan_entry new_entry;
1644 struct mt7530_priv *priv = ds->priv;
1646 mutex_lock(&priv->reg_mutex);
1648 mt7530_hw_vlan_entry_init(&new_entry, port, untagged);
1649 mt7530_hw_vlan_update(priv, vlan->vid, &new_entry, mt7530_hw_vlan_add);
1652 priv->ports[port].pvid = vlan->vid;
1654 /* Accept all frames if PVID is set */
1655 mt7530_rmw(priv, MT7530_PVC_P(port), ACC_FRM_MASK,
1656 MT7530_VLAN_ACC_ALL);
1658 /* Only configure PVID if VLAN filtering is enabled */
1659 if (dsa_port_is_vlan_filtering(dsa_to_port(ds, port)))
1660 mt7530_rmw(priv, MT7530_PPBV1_P(port),
1662 G0_PORT_VID(vlan->vid));
1663 } else if (vlan->vid && priv->ports[port].pvid == vlan->vid) {
1664 /* This VLAN is overwritten without PVID, so unset it */
1665 priv->ports[port].pvid = G0_PORT_VID_DEF;
1667 /* Only accept tagged frames if the port is VLAN-aware */
1668 if (dsa_port_is_vlan_filtering(dsa_to_port(ds, port)))
1669 mt7530_rmw(priv, MT7530_PVC_P(port), ACC_FRM_MASK,
1670 MT7530_VLAN_ACC_TAGGED);
1672 mt7530_rmw(priv, MT7530_PPBV1_P(port), G0_PORT_VID_MASK,
1676 mutex_unlock(&priv->reg_mutex);
1682 mt7530_port_vlan_del(struct dsa_switch *ds, int port,
1683 const struct switchdev_obj_port_vlan *vlan)
1685 struct mt7530_hw_vlan_entry target_entry;
1686 struct mt7530_priv *priv = ds->priv;
1688 mutex_lock(&priv->reg_mutex);
1690 mt7530_hw_vlan_entry_init(&target_entry, port, 0);
1691 mt7530_hw_vlan_update(priv, vlan->vid, &target_entry,
1692 mt7530_hw_vlan_del);
1694 /* PVID is being restored to the default whenever the PVID port
1695 * is being removed from the VLAN.
1697 if (priv->ports[port].pvid == vlan->vid) {
1698 priv->ports[port].pvid = G0_PORT_VID_DEF;
1700 /* Only accept tagged frames if the port is VLAN-aware */
1701 if (dsa_port_is_vlan_filtering(dsa_to_port(ds, port)))
1702 mt7530_rmw(priv, MT7530_PVC_P(port), ACC_FRM_MASK,
1703 MT7530_VLAN_ACC_TAGGED);
1705 mt7530_rmw(priv, MT7530_PPBV1_P(port), G0_PORT_VID_MASK,
1710 mutex_unlock(&priv->reg_mutex);
1715 static int mt753x_mirror_port_get(unsigned int id, u32 val)
1717 return (id == ID_MT7531) ? MT7531_MIRROR_PORT_GET(val) :
1721 static int mt753x_mirror_port_set(unsigned int id, u32 val)
1723 return (id == ID_MT7531) ? MT7531_MIRROR_PORT_SET(val) :
1727 static int mt753x_port_mirror_add(struct dsa_switch *ds, int port,
1728 struct dsa_mall_mirror_tc_entry *mirror,
1729 bool ingress, struct netlink_ext_ack *extack)
1731 struct mt7530_priv *priv = ds->priv;
1735 /* Check for existent entry */
1736 if ((ingress ? priv->mirror_rx : priv->mirror_tx) & BIT(port))
1739 val = mt7530_read(priv, MT753X_MIRROR_REG(priv->id));
1741 /* MT7530 only supports one monitor port */
1742 monitor_port = mt753x_mirror_port_get(priv->id, val);
1743 if (val & MT753X_MIRROR_EN(priv->id) &&
1744 monitor_port != mirror->to_local_port)
1747 val |= MT753X_MIRROR_EN(priv->id);
1748 val &= ~MT753X_MIRROR_MASK(priv->id);
1749 val |= mt753x_mirror_port_set(priv->id, mirror->to_local_port);
1750 mt7530_write(priv, MT753X_MIRROR_REG(priv->id), val);
1752 val = mt7530_read(priv, MT7530_PCR_P(port));
1755 priv->mirror_rx |= BIT(port);
1758 priv->mirror_tx |= BIT(port);
1760 mt7530_write(priv, MT7530_PCR_P(port), val);
1765 static void mt753x_port_mirror_del(struct dsa_switch *ds, int port,
1766 struct dsa_mall_mirror_tc_entry *mirror)
1768 struct mt7530_priv *priv = ds->priv;
1771 val = mt7530_read(priv, MT7530_PCR_P(port));
1772 if (mirror->ingress) {
1773 val &= ~PORT_RX_MIR;
1774 priv->mirror_rx &= ~BIT(port);
1776 val &= ~PORT_TX_MIR;
1777 priv->mirror_tx &= ~BIT(port);
1779 mt7530_write(priv, MT7530_PCR_P(port), val);
1781 if (!priv->mirror_rx && !priv->mirror_tx) {
1782 val = mt7530_read(priv, MT753X_MIRROR_REG(priv->id));
1783 val &= ~MT753X_MIRROR_EN(priv->id);
1784 mt7530_write(priv, MT753X_MIRROR_REG(priv->id), val);
1788 static enum dsa_tag_protocol
1789 mtk_get_tag_protocol(struct dsa_switch *ds, int port,
1790 enum dsa_tag_protocol mp)
1792 return DSA_TAG_PROTO_MTK;
1795 #ifdef CONFIG_GPIOLIB
1797 mt7530_gpio_to_bit(unsigned int offset)
1799 /* Map GPIO offset to register bit
1800 * [ 2: 0] port 0 LED 0..2 as GPIO 0..2
1801 * [ 6: 4] port 1 LED 0..2 as GPIO 3..5
1802 * [10: 8] port 2 LED 0..2 as GPIO 6..8
1803 * [14:12] port 3 LED 0..2 as GPIO 9..11
1804 * [18:16] port 4 LED 0..2 as GPIO 12..14
1806 return BIT(offset + offset / 3);
1810 mt7530_gpio_get(struct gpio_chip *gc, unsigned int offset)
1812 struct mt7530_priv *priv = gpiochip_get_data(gc);
1813 u32 bit = mt7530_gpio_to_bit(offset);
1815 return !!(mt7530_read(priv, MT7530_LED_GPIO_DATA) & bit);
1819 mt7530_gpio_set(struct gpio_chip *gc, unsigned int offset, int value)
1821 struct mt7530_priv *priv = gpiochip_get_data(gc);
1822 u32 bit = mt7530_gpio_to_bit(offset);
1825 mt7530_set(priv, MT7530_LED_GPIO_DATA, bit);
1827 mt7530_clear(priv, MT7530_LED_GPIO_DATA, bit);
1831 mt7530_gpio_get_direction(struct gpio_chip *gc, unsigned int offset)
1833 struct mt7530_priv *priv = gpiochip_get_data(gc);
1834 u32 bit = mt7530_gpio_to_bit(offset);
1836 return (mt7530_read(priv, MT7530_LED_GPIO_DIR) & bit) ?
1837 GPIO_LINE_DIRECTION_OUT : GPIO_LINE_DIRECTION_IN;
1841 mt7530_gpio_direction_input(struct gpio_chip *gc, unsigned int offset)
1843 struct mt7530_priv *priv = gpiochip_get_data(gc);
1844 u32 bit = mt7530_gpio_to_bit(offset);
1846 mt7530_clear(priv, MT7530_LED_GPIO_OE, bit);
1847 mt7530_clear(priv, MT7530_LED_GPIO_DIR, bit);
1853 mt7530_gpio_direction_output(struct gpio_chip *gc, unsigned int offset, int value)
1855 struct mt7530_priv *priv = gpiochip_get_data(gc);
1856 u32 bit = mt7530_gpio_to_bit(offset);
1858 mt7530_set(priv, MT7530_LED_GPIO_DIR, bit);
1861 mt7530_set(priv, MT7530_LED_GPIO_DATA, bit);
1863 mt7530_clear(priv, MT7530_LED_GPIO_DATA, bit);
1865 mt7530_set(priv, MT7530_LED_GPIO_OE, bit);
1871 mt7530_setup_gpio(struct mt7530_priv *priv)
1873 struct device *dev = priv->dev;
1874 struct gpio_chip *gc;
1876 gc = devm_kzalloc(dev, sizeof(*gc), GFP_KERNEL);
1880 mt7530_write(priv, MT7530_LED_GPIO_OE, 0);
1881 mt7530_write(priv, MT7530_LED_GPIO_DIR, 0);
1882 mt7530_write(priv, MT7530_LED_IO_MODE, 0);
1884 gc->label = "mt7530";
1886 gc->owner = THIS_MODULE;
1887 gc->get_direction = mt7530_gpio_get_direction;
1888 gc->direction_input = mt7530_gpio_direction_input;
1889 gc->direction_output = mt7530_gpio_direction_output;
1890 gc->get = mt7530_gpio_get;
1891 gc->set = mt7530_gpio_set;
1894 gc->can_sleep = true;
1896 return devm_gpiochip_add_data(dev, gc, priv);
1898 #endif /* CONFIG_GPIOLIB */
1901 mt7530_irq_thread_fn(int irq, void *dev_id)
1903 struct mt7530_priv *priv = dev_id;
1904 bool handled = false;
1908 mutex_lock_nested(&priv->bus->mdio_lock, MDIO_MUTEX_NESTED);
1909 val = mt7530_mii_read(priv, MT7530_SYS_INT_STS);
1910 mt7530_mii_write(priv, MT7530_SYS_INT_STS, val);
1911 mutex_unlock(&priv->bus->mdio_lock);
1913 for (p = 0; p < MT7530_NUM_PHYS; p++) {
1917 irq = irq_find_mapping(priv->irq_domain, p);
1918 handle_nested_irq(irq);
1923 return IRQ_RETVAL(handled);
1927 mt7530_irq_mask(struct irq_data *d)
1929 struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
1931 priv->irq_enable &= ~BIT(d->hwirq);
1935 mt7530_irq_unmask(struct irq_data *d)
1937 struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
1939 priv->irq_enable |= BIT(d->hwirq);
1943 mt7530_irq_bus_lock(struct irq_data *d)
1945 struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
1947 mutex_lock_nested(&priv->bus->mdio_lock, MDIO_MUTEX_NESTED);
1951 mt7530_irq_bus_sync_unlock(struct irq_data *d)
1953 struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
1955 mt7530_mii_write(priv, MT7530_SYS_INT_EN, priv->irq_enable);
1956 mutex_unlock(&priv->bus->mdio_lock);
1959 static struct irq_chip mt7530_irq_chip = {
1960 .name = KBUILD_MODNAME,
1961 .irq_mask = mt7530_irq_mask,
1962 .irq_unmask = mt7530_irq_unmask,
1963 .irq_bus_lock = mt7530_irq_bus_lock,
1964 .irq_bus_sync_unlock = mt7530_irq_bus_sync_unlock,
1968 mt7530_irq_map(struct irq_domain *domain, unsigned int irq,
1969 irq_hw_number_t hwirq)
1971 irq_set_chip_data(irq, domain->host_data);
1972 irq_set_chip_and_handler(irq, &mt7530_irq_chip, handle_simple_irq);
1973 irq_set_nested_thread(irq, true);
1974 irq_set_noprobe(irq);
1979 static const struct irq_domain_ops mt7530_irq_domain_ops = {
1980 .map = mt7530_irq_map,
1981 .xlate = irq_domain_xlate_onecell,
1985 mt7530_setup_mdio_irq(struct mt7530_priv *priv)
1987 struct dsa_switch *ds = priv->ds;
1990 for (p = 0; p < MT7530_NUM_PHYS; p++) {
1991 if (BIT(p) & ds->phys_mii_mask) {
1994 irq = irq_create_mapping(priv->irq_domain, p);
1995 ds->slave_mii_bus->irq[p] = irq;
2001 mt7530_setup_irq(struct mt7530_priv *priv)
2003 struct device *dev = priv->dev;
2004 struct device_node *np = dev->of_node;
2007 if (!of_property_read_bool(np, "interrupt-controller")) {
2008 dev_info(dev, "no interrupt support\n");
2012 priv->irq = of_irq_get(np, 0);
2013 if (priv->irq <= 0) {
2014 dev_err(dev, "failed to get parent IRQ: %d\n", priv->irq);
2015 return priv->irq ? : -EINVAL;
2018 priv->irq_domain = irq_domain_add_linear(np, MT7530_NUM_PHYS,
2019 &mt7530_irq_domain_ops, priv);
2020 if (!priv->irq_domain) {
2021 dev_err(dev, "failed to create IRQ domain\n");
2025 /* This register must be set for MT7530 to properly fire interrupts */
2026 if (priv->id != ID_MT7531)
2027 mt7530_set(priv, MT7530_TOP_SIG_CTRL, TOP_SIG_CTRL_NORMAL);
2029 ret = request_threaded_irq(priv->irq, NULL, mt7530_irq_thread_fn,
2030 IRQF_ONESHOT, KBUILD_MODNAME, priv);
2032 irq_domain_remove(priv->irq_domain);
2033 dev_err(dev, "failed to request IRQ: %d\n", ret);
2041 mt7530_free_mdio_irq(struct mt7530_priv *priv)
2045 for (p = 0; p < MT7530_NUM_PHYS; p++) {
2046 if (BIT(p) & priv->ds->phys_mii_mask) {
2049 irq = irq_find_mapping(priv->irq_domain, p);
2050 irq_dispose_mapping(irq);
2056 mt7530_free_irq_common(struct mt7530_priv *priv)
2058 free_irq(priv->irq, priv);
2059 irq_domain_remove(priv->irq_domain);
2063 mt7530_free_irq(struct mt7530_priv *priv)
2065 mt7530_free_mdio_irq(priv);
2066 mt7530_free_irq_common(priv);
2070 mt7530_setup_mdio(struct mt7530_priv *priv)
2072 struct dsa_switch *ds = priv->ds;
2073 struct device *dev = priv->dev;
2074 struct mii_bus *bus;
2078 bus = devm_mdiobus_alloc(dev);
2082 ds->slave_mii_bus = bus;
2084 bus->name = KBUILD_MODNAME "-mii";
2085 snprintf(bus->id, MII_BUS_ID_SIZE, KBUILD_MODNAME "-%d", idx++);
2086 bus->read = mt753x_phy_read;
2087 bus->write = mt753x_phy_write;
2089 bus->phy_mask = ~ds->phys_mii_mask;
2092 mt7530_setup_mdio_irq(priv);
2094 ret = devm_mdiobus_register(dev, bus);
2096 dev_err(dev, "failed to register MDIO bus: %d\n", ret);
2098 mt7530_free_mdio_irq(priv);
2105 mt7530_setup(struct dsa_switch *ds)
2107 struct mt7530_priv *priv = ds->priv;
2108 struct device_node *dn = NULL;
2109 struct device_node *phy_node;
2110 struct device_node *mac_np;
2111 struct mt7530_dummy_poll p;
2112 phy_interface_t interface;
2113 struct dsa_port *cpu_dp;
2117 /* The parent node of master netdev which holds the common system
2118 * controller also is the container for two GMACs nodes representing
2119 * as two netdev instances.
2121 dsa_switch_for_each_cpu_port(cpu_dp, ds) {
2122 dn = cpu_dp->master->dev.of_node->parent;
2123 /* It doesn't matter which CPU port is found first,
2124 * their masters should share the same parent OF node
2130 dev_err(ds->dev, "parent OF node of DSA master not found");
2134 ds->assisted_learning_on_cpu_port = true;
2135 ds->mtu_enforcement_ingress = true;
2137 if (priv->id == ID_MT7530) {
2138 regulator_set_voltage(priv->core_pwr, 1000000, 1000000);
2139 ret = regulator_enable(priv->core_pwr);
2142 "Failed to enable core power: %d\n", ret);
2146 regulator_set_voltage(priv->io_pwr, 3300000, 3300000);
2147 ret = regulator_enable(priv->io_pwr);
2149 dev_err(priv->dev, "Failed to enable io pwr: %d\n",
2155 /* Reset whole chip through gpio pin or memory-mapped registers for
2156 * different type of hardware
2159 reset_control_assert(priv->rstc);
2160 usleep_range(1000, 1100);
2161 reset_control_deassert(priv->rstc);
2163 gpiod_set_value_cansleep(priv->reset, 0);
2164 usleep_range(1000, 1100);
2165 gpiod_set_value_cansleep(priv->reset, 1);
2168 /* Waiting for MT7530 got to stable */
2169 INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_HWTRAP);
2170 ret = readx_poll_timeout(_mt7530_read, &p, val, val != 0,
2173 dev_err(priv->dev, "reset timeout\n");
2177 id = mt7530_read(priv, MT7530_CREV);
2178 id >>= CHIP_NAME_SHIFT;
2179 if (id != MT7530_ID) {
2180 dev_err(priv->dev, "chip %x can't be supported\n", id);
2184 /* Reset the switch through internal reset */
2185 mt7530_write(priv, MT7530_SYS_CTRL,
2186 SYS_CTRL_PHY_RST | SYS_CTRL_SW_RST |
2189 /* Enable Port 6 only; P5 as GMAC5 which currently is not supported */
2190 val = mt7530_read(priv, MT7530_MHWTRAP);
2191 val &= ~MHWTRAP_P6_DIS & ~MHWTRAP_PHY_ACCESS;
2192 val |= MHWTRAP_MANUAL;
2193 mt7530_write(priv, MT7530_MHWTRAP, val);
2195 priv->p6_interface = PHY_INTERFACE_MODE_NA;
2197 /* Enable and reset MIB counters */
2198 mt7530_mib_reset(ds);
2200 for (i = 0; i < MT7530_NUM_PORTS; i++) {
2201 /* Disable forwarding by default on all ports */
2202 mt7530_rmw(priv, MT7530_PCR_P(i), PCR_MATRIX_MASK,
2205 /* Disable learning by default on all ports */
2206 mt7530_set(priv, MT7530_PSC_P(i), SA_DIS);
2208 if (dsa_is_cpu_port(ds, i)) {
2209 ret = mt753x_cpu_port_enable(ds, i);
2213 mt7530_port_disable(ds, i);
2215 /* Set default PVID to 0 on all user ports */
2216 mt7530_rmw(priv, MT7530_PPBV1_P(i), G0_PORT_VID_MASK,
2219 /* Enable consistent egress tag */
2220 mt7530_rmw(priv, MT7530_PVC_P(i), PVC_EG_TAG_MASK,
2221 PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
2224 /* Setup VLAN ID 0 for VLAN-unaware bridges */
2225 ret = mt7530_setup_vlan0(priv);
2230 priv->p5_intf_sel = P5_DISABLED;
2231 interface = PHY_INTERFACE_MODE_NA;
2233 if (!dsa_is_unused_port(ds, 5)) {
2234 priv->p5_intf_sel = P5_INTF_SEL_GMAC5;
2235 ret = of_get_phy_mode(dsa_to_port(ds, 5)->dn, &interface);
2236 if (ret && ret != -ENODEV)
2239 /* Scan the ethernet nodes. look for GMAC1, lookup used phy */
2240 for_each_child_of_node(dn, mac_np) {
2241 if (!of_device_is_compatible(mac_np,
2242 "mediatek,eth-mac"))
2245 ret = of_property_read_u32(mac_np, "reg", &id);
2246 if (ret < 0 || id != 1)
2249 phy_node = of_parse_phandle(mac_np, "phy-handle", 0);
2253 if (phy_node->parent == priv->dev->of_node->parent) {
2254 ret = of_get_phy_mode(mac_np, &interface);
2255 if (ret && ret != -ENODEV) {
2256 of_node_put(mac_np);
2257 of_node_put(phy_node);
2260 id = of_mdio_parse_addr(ds->dev, phy_node);
2262 priv->p5_intf_sel = P5_INTF_SEL_PHY_P0;
2264 priv->p5_intf_sel = P5_INTF_SEL_PHY_P4;
2266 of_node_put(mac_np);
2267 of_node_put(phy_node);
2272 #ifdef CONFIG_GPIOLIB
2273 if (of_property_read_bool(priv->dev->of_node, "gpio-controller")) {
2274 ret = mt7530_setup_gpio(priv);
2278 #endif /* CONFIG_GPIOLIB */
2280 mt7530_setup_port5(ds, interface);
2282 /* Flush the FDB table */
2283 ret = mt7530_fdb_cmd(priv, MT7530_FDB_FLUSH, NULL);
2291 mt7531_setup(struct dsa_switch *ds)
2293 struct mt7530_priv *priv = ds->priv;
2294 struct mt7530_dummy_poll p;
2295 struct dsa_port *cpu_dp;
2299 /* Reset whole chip through gpio pin or memory-mapped registers for
2300 * different type of hardware
2303 reset_control_assert(priv->rstc);
2304 usleep_range(1000, 1100);
2305 reset_control_deassert(priv->rstc);
2307 gpiod_set_value_cansleep(priv->reset, 0);
2308 usleep_range(1000, 1100);
2309 gpiod_set_value_cansleep(priv->reset, 1);
2312 /* Waiting for MT7530 got to stable */
2313 INIT_MT7530_DUMMY_POLL(&p, priv, MT7530_HWTRAP);
2314 ret = readx_poll_timeout(_mt7530_read, &p, val, val != 0,
2317 dev_err(priv->dev, "reset timeout\n");
2321 id = mt7530_read(priv, MT7531_CREV);
2322 id >>= CHIP_NAME_SHIFT;
2324 if (id != MT7531_ID) {
2325 dev_err(priv->dev, "chip %x can't be supported\n", id);
2329 /* Reset the switch through internal reset */
2330 mt7530_write(priv, MT7530_SYS_CTRL,
2331 SYS_CTRL_PHY_RST | SYS_CTRL_SW_RST |
2334 if (mt7531_dual_sgmii_supported(priv)) {
2335 priv->p5_intf_sel = P5_INTF_SEL_GMAC5_SGMII;
2337 /* Let ds->slave_mii_bus be able to access external phy. */
2338 mt7530_rmw(priv, MT7531_GPIO_MODE1, MT7531_GPIO11_RG_RXD2_MASK,
2339 MT7531_EXT_P_MDC_11);
2340 mt7530_rmw(priv, MT7531_GPIO_MODE1, MT7531_GPIO12_RG_RXD3_MASK,
2341 MT7531_EXT_P_MDIO_12);
2343 priv->p5_intf_sel = P5_INTF_SEL_GMAC5;
2345 dev_dbg(ds->dev, "P5 support %s interface\n",
2346 p5_intf_modes(priv->p5_intf_sel));
2348 mt7530_rmw(priv, MT7531_GPIO_MODE0, MT7531_GPIO0_MASK,
2349 MT7531_GPIO0_INTERRUPT);
2351 /* Let phylink decide the interface later. */
2352 priv->p5_interface = PHY_INTERFACE_MODE_NA;
2353 priv->p6_interface = PHY_INTERFACE_MODE_NA;
2355 /* Enable PHY core PLL, since phy_device has not yet been created
2356 * provided for phy_[read,write]_mmd_indirect is called, we provide
2357 * our own mt7531_ind_mmd_phy_[read,write] to complete this
2360 val = mt7531_ind_c45_phy_read(priv, MT753X_CTRL_PHY_ADDR,
2361 MDIO_MMD_VEND2, CORE_PLL_GROUP4);
2362 val |= MT7531_PHY_PLL_BYPASS_MODE;
2363 val &= ~MT7531_PHY_PLL_OFF;
2364 mt7531_ind_c45_phy_write(priv, MT753X_CTRL_PHY_ADDR, MDIO_MMD_VEND2,
2365 CORE_PLL_GROUP4, val);
2367 /* BPDU to CPU port */
2368 dsa_switch_for_each_cpu_port(cpu_dp, ds) {
2369 mt7530_rmw(priv, MT7531_CFC, MT7531_CPU_PMAP_MASK,
2370 BIT(cpu_dp->index));
2373 mt7530_rmw(priv, MT753X_BPC, MT753X_BPDU_PORT_FW_MASK,
2374 MT753X_BPDU_CPU_ONLY);
2376 /* Enable and reset MIB counters */
2377 mt7530_mib_reset(ds);
2379 for (i = 0; i < MT7530_NUM_PORTS; i++) {
2380 /* Disable forwarding by default on all ports */
2381 mt7530_rmw(priv, MT7530_PCR_P(i), PCR_MATRIX_MASK,
2384 /* Disable learning by default on all ports */
2385 mt7530_set(priv, MT7530_PSC_P(i), SA_DIS);
2387 mt7530_set(priv, MT7531_DBG_CNT(i), MT7531_DIS_CLR);
2389 if (dsa_is_cpu_port(ds, i)) {
2390 ret = mt753x_cpu_port_enable(ds, i);
2394 mt7530_port_disable(ds, i);
2396 /* Set default PVID to 0 on all user ports */
2397 mt7530_rmw(priv, MT7530_PPBV1_P(i), G0_PORT_VID_MASK,
2401 /* Enable consistent egress tag */
2402 mt7530_rmw(priv, MT7530_PVC_P(i), PVC_EG_TAG_MASK,
2403 PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
2406 /* Setup VLAN ID 0 for VLAN-unaware bridges */
2407 ret = mt7530_setup_vlan0(priv);
2411 ds->assisted_learning_on_cpu_port = true;
2412 ds->mtu_enforcement_ingress = true;
2414 /* Flush the FDB table */
2415 ret = mt7530_fdb_cmd(priv, MT7530_FDB_FLUSH, NULL);
2422 static void mt7530_mac_port_get_caps(struct dsa_switch *ds, int port,
2423 struct phylink_config *config)
2426 case 0 ... 4: /* Internal phy */
2427 __set_bit(PHY_INTERFACE_MODE_GMII,
2428 config->supported_interfaces);
2431 case 5: /* 2nd cpu port with phy of port 0 or 4 / external phy */
2432 phy_interface_set_rgmii(config->supported_interfaces);
2433 __set_bit(PHY_INTERFACE_MODE_MII,
2434 config->supported_interfaces);
2435 __set_bit(PHY_INTERFACE_MODE_GMII,
2436 config->supported_interfaces);
2439 case 6: /* 1st cpu port */
2440 __set_bit(PHY_INTERFACE_MODE_RGMII,
2441 config->supported_interfaces);
2442 __set_bit(PHY_INTERFACE_MODE_TRGMII,
2443 config->supported_interfaces);
2448 static bool mt7531_is_rgmii_port(struct mt7530_priv *priv, u32 port)
2450 return (port == 5) && (priv->p5_intf_sel != P5_INTF_SEL_GMAC5_SGMII);
2453 static void mt7531_mac_port_get_caps(struct dsa_switch *ds, int port,
2454 struct phylink_config *config)
2456 struct mt7530_priv *priv = ds->priv;
2459 case 0 ... 4: /* Internal phy */
2460 __set_bit(PHY_INTERFACE_MODE_GMII,
2461 config->supported_interfaces);
2464 case 5: /* 2nd cpu port supports either rgmii or sgmii/8023z */
2465 if (mt7531_is_rgmii_port(priv, port)) {
2466 phy_interface_set_rgmii(config->supported_interfaces);
2471 case 6: /* 1st cpu port supports sgmii/8023z only */
2472 __set_bit(PHY_INTERFACE_MODE_SGMII,
2473 config->supported_interfaces);
2474 __set_bit(PHY_INTERFACE_MODE_1000BASEX,
2475 config->supported_interfaces);
2476 __set_bit(PHY_INTERFACE_MODE_2500BASEX,
2477 config->supported_interfaces);
2479 config->mac_capabilities |= MAC_2500FD;
2485 mt753x_pad_setup(struct dsa_switch *ds, const struct phylink_link_state *state)
2487 struct mt7530_priv *priv = ds->priv;
2489 return priv->info->pad_setup(ds, state->interface);
2493 mt7530_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
2494 phy_interface_t interface)
2496 struct mt7530_priv *priv = ds->priv;
2498 /* Only need to setup port5. */
2502 mt7530_setup_port5(priv->ds, interface);
2507 static int mt7531_rgmii_setup(struct mt7530_priv *priv, u32 port,
2508 phy_interface_t interface,
2509 struct phy_device *phydev)
2513 if (!mt7531_is_rgmii_port(priv, port)) {
2514 dev_err(priv->dev, "RGMII mode is not available for port %d\n",
2519 val = mt7530_read(priv, MT7531_CLKGEN_CTRL);
2521 val &= ~GP_MODE_MASK;
2522 val |= GP_MODE(MT7531_GP_MODE_RGMII);
2523 val &= ~CLK_SKEW_IN_MASK;
2524 val |= CLK_SKEW_IN(MT7531_CLK_SKEW_NO_CHG);
2525 val &= ~CLK_SKEW_OUT_MASK;
2526 val |= CLK_SKEW_OUT(MT7531_CLK_SKEW_NO_CHG);
2527 val |= TXCLK_NO_REVERSE | RXCLK_NO_DELAY;
2529 /* Do not adjust rgmii delay when vendor phy driver presents. */
2530 if (!phydev || phy_driver_is_genphy(phydev)) {
2531 val &= ~(TXCLK_NO_REVERSE | RXCLK_NO_DELAY);
2532 switch (interface) {
2533 case PHY_INTERFACE_MODE_RGMII:
2534 val |= TXCLK_NO_REVERSE;
2535 val |= RXCLK_NO_DELAY;
2537 case PHY_INTERFACE_MODE_RGMII_RXID:
2538 val |= TXCLK_NO_REVERSE;
2540 case PHY_INTERFACE_MODE_RGMII_TXID:
2541 val |= RXCLK_NO_DELAY;
2543 case PHY_INTERFACE_MODE_RGMII_ID:
2549 mt7530_write(priv, MT7531_CLKGEN_CTRL, val);
2554 static void mt7531_pcs_link_up(struct phylink_pcs *pcs, unsigned int mode,
2555 phy_interface_t interface, int speed, int duplex)
2557 struct mt7530_priv *priv = pcs_to_mt753x_pcs(pcs)->priv;
2558 int port = pcs_to_mt753x_pcs(pcs)->port;
2561 /* For adjusting speed and duplex of SGMII force mode. */
2562 if (interface != PHY_INTERFACE_MODE_SGMII ||
2563 phylink_autoneg_inband(mode))
2566 /* SGMII force mode setting */
2567 val = mt7530_read(priv, MT7531_SGMII_MODE(port));
2568 val &= ~MT7531_SGMII_IF_MODE_MASK;
2572 val |= MT7531_SGMII_FORCE_SPEED_10;
2575 val |= MT7531_SGMII_FORCE_SPEED_100;
2578 val |= MT7531_SGMII_FORCE_SPEED_1000;
2582 /* MT7531 SGMII 1G force mode can only work in full duplex mode,
2583 * no matter MT7531_SGMII_FORCE_HALF_DUPLEX is set or not.
2585 * The speed check is unnecessary as the MAC capabilities apply
2586 * this restriction. --rmk
2588 if ((speed == SPEED_10 || speed == SPEED_100) &&
2589 duplex != DUPLEX_FULL)
2590 val |= MT7531_SGMII_FORCE_HALF_DUPLEX;
2592 mt7530_write(priv, MT7531_SGMII_MODE(port), val);
2595 static bool mt753x_is_mac_port(u32 port)
2597 return (port == 5 || port == 6);
2600 static int mt7531_sgmii_setup_mode_force(struct mt7530_priv *priv, u32 port,
2601 phy_interface_t interface)
2605 if (!mt753x_is_mac_port(port))
2608 mt7530_set(priv, MT7531_QPHY_PWR_STATE_CTRL(port),
2609 MT7531_SGMII_PHYA_PWD);
2611 val = mt7530_read(priv, MT7531_PHYA_CTRL_SIGNAL3(port));
2612 val &= ~MT7531_RG_TPHY_SPEED_MASK;
2613 /* Setup 2.5 times faster clock for 2.5Gbps data speeds with 10B/8B
2616 val |= (interface == PHY_INTERFACE_MODE_2500BASEX) ?
2617 MT7531_RG_TPHY_SPEED_3_125G : MT7531_RG_TPHY_SPEED_1_25G;
2618 mt7530_write(priv, MT7531_PHYA_CTRL_SIGNAL3(port), val);
2620 mt7530_clear(priv, MT7531_PCS_CONTROL_1(port), MT7531_SGMII_AN_ENABLE);
2622 /* MT7531 SGMII 1G and 2.5G force mode can only work in full duplex
2623 * mode, no matter MT7531_SGMII_FORCE_HALF_DUPLEX is set or not.
2625 mt7530_rmw(priv, MT7531_SGMII_MODE(port),
2626 MT7531_SGMII_IF_MODE_MASK | MT7531_SGMII_REMOTE_FAULT_DIS,
2627 MT7531_SGMII_FORCE_SPEED_1000);
2629 mt7530_write(priv, MT7531_QPHY_PWR_STATE_CTRL(port), 0);
2634 static int mt7531_sgmii_setup_mode_an(struct mt7530_priv *priv, int port,
2635 phy_interface_t interface)
2637 if (!mt753x_is_mac_port(port))
2640 mt7530_set(priv, MT7531_QPHY_PWR_STATE_CTRL(port),
2641 MT7531_SGMII_PHYA_PWD);
2643 mt7530_rmw(priv, MT7531_PHYA_CTRL_SIGNAL3(port),
2644 MT7531_RG_TPHY_SPEED_MASK, MT7531_RG_TPHY_SPEED_1_25G);
2646 mt7530_set(priv, MT7531_SGMII_MODE(port),
2647 MT7531_SGMII_REMOTE_FAULT_DIS |
2648 MT7531_SGMII_SPEED_DUPLEX_AN);
2650 mt7530_rmw(priv, MT7531_PCS_SPEED_ABILITY(port),
2651 MT7531_SGMII_TX_CONFIG_MASK, 1);
2653 mt7530_set(priv, MT7531_PCS_CONTROL_1(port), MT7531_SGMII_AN_ENABLE);
2655 mt7530_set(priv, MT7531_PCS_CONTROL_1(port), MT7531_SGMII_AN_RESTART);
2657 mt7530_write(priv, MT7531_QPHY_PWR_STATE_CTRL(port), 0);
2662 static void mt7531_pcs_an_restart(struct phylink_pcs *pcs)
2664 struct mt7530_priv *priv = pcs_to_mt753x_pcs(pcs)->priv;
2665 int port = pcs_to_mt753x_pcs(pcs)->port;
2668 /* Only restart AN when AN is enabled */
2669 val = mt7530_read(priv, MT7531_PCS_CONTROL_1(port));
2670 if (val & MT7531_SGMII_AN_ENABLE) {
2671 val |= MT7531_SGMII_AN_RESTART;
2672 mt7530_write(priv, MT7531_PCS_CONTROL_1(port), val);
2677 mt7531_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
2678 phy_interface_t interface)
2680 struct mt7530_priv *priv = ds->priv;
2681 struct phy_device *phydev;
2682 struct dsa_port *dp;
2684 if (!mt753x_is_mac_port(port)) {
2685 dev_err(priv->dev, "port %d is not a MAC port\n", port);
2689 switch (interface) {
2690 case PHY_INTERFACE_MODE_RGMII:
2691 case PHY_INTERFACE_MODE_RGMII_ID:
2692 case PHY_INTERFACE_MODE_RGMII_RXID:
2693 case PHY_INTERFACE_MODE_RGMII_TXID:
2694 dp = dsa_to_port(ds, port);
2695 phydev = dp->slave->phydev;
2696 return mt7531_rgmii_setup(priv, port, interface, phydev);
2697 case PHY_INTERFACE_MODE_SGMII:
2698 return mt7531_sgmii_setup_mode_an(priv, port, interface);
2699 case PHY_INTERFACE_MODE_NA:
2700 case PHY_INTERFACE_MODE_1000BASEX:
2701 case PHY_INTERFACE_MODE_2500BASEX:
2702 if (phylink_autoneg_inband(mode))
2705 return mt7531_sgmii_setup_mode_force(priv, port, interface);
2714 mt753x_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
2715 const struct phylink_link_state *state)
2717 struct mt7530_priv *priv = ds->priv;
2719 return priv->info->mac_port_config(ds, port, mode, state->interface);
2722 static struct phylink_pcs *
2723 mt753x_phylink_mac_select_pcs(struct dsa_switch *ds, int port,
2724 phy_interface_t interface)
2726 struct mt7530_priv *priv = ds->priv;
2728 switch (interface) {
2729 case PHY_INTERFACE_MODE_TRGMII:
2730 case PHY_INTERFACE_MODE_SGMII:
2731 case PHY_INTERFACE_MODE_1000BASEX:
2732 case PHY_INTERFACE_MODE_2500BASEX:
2733 return &priv->pcs[port].pcs;
2741 mt753x_phylink_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
2742 const struct phylink_link_state *state)
2744 struct mt7530_priv *priv = ds->priv;
2745 u32 mcr_cur, mcr_new;
2748 case 0 ... 4: /* Internal phy */
2749 if (state->interface != PHY_INTERFACE_MODE_GMII)
2752 case 5: /* 2nd cpu port with phy of port 0 or 4 / external phy */
2753 if (priv->p5_interface == state->interface)
2756 if (mt753x_mac_config(ds, port, mode, state) < 0)
2759 if (priv->p5_intf_sel != P5_DISABLED)
2760 priv->p5_interface = state->interface;
2762 case 6: /* 1st cpu port */
2763 if (priv->p6_interface == state->interface)
2766 mt753x_pad_setup(ds, state);
2768 if (mt753x_mac_config(ds, port, mode, state) < 0)
2771 priv->p6_interface = state->interface;
2775 dev_err(ds->dev, "%s: unsupported %s port: %i\n",
2776 __func__, phy_modes(state->interface), port);
2780 if (phylink_autoneg_inband(mode) &&
2781 state->interface != PHY_INTERFACE_MODE_SGMII) {
2782 dev_err(ds->dev, "%s: in-band negotiation unsupported\n",
2787 mcr_cur = mt7530_read(priv, MT7530_PMCR_P(port));
2789 mcr_new &= ~PMCR_LINK_SETTINGS_MASK;
2790 mcr_new |= PMCR_IFG_XMIT(1) | PMCR_MAC_MODE | PMCR_BACKOFF_EN |
2791 PMCR_BACKPR_EN | PMCR_FORCE_MODE_ID(priv->id);
2793 /* Are we connected to external phy */
2794 if (port == 5 && dsa_is_user_port(ds, 5))
2795 mcr_new |= PMCR_EXT_PHY;
2797 if (mcr_new != mcr_cur)
2798 mt7530_write(priv, MT7530_PMCR_P(port), mcr_new);
2801 static void mt753x_phylink_mac_link_down(struct dsa_switch *ds, int port,
2803 phy_interface_t interface)
2805 struct mt7530_priv *priv = ds->priv;
2807 mt7530_clear(priv, MT7530_PMCR_P(port), PMCR_LINK_SETTINGS_MASK);
2810 static void mt753x_phylink_pcs_link_up(struct phylink_pcs *pcs,
2812 phy_interface_t interface,
2813 int speed, int duplex)
2815 if (pcs->ops->pcs_link_up)
2816 pcs->ops->pcs_link_up(pcs, mode, interface, speed, duplex);
2819 static void mt753x_phylink_mac_link_up(struct dsa_switch *ds, int port,
2821 phy_interface_t interface,
2822 struct phy_device *phydev,
2823 int speed, int duplex,
2824 bool tx_pause, bool rx_pause)
2826 struct mt7530_priv *priv = ds->priv;
2829 mcr = PMCR_RX_EN | PMCR_TX_EN | PMCR_FORCE_LNK;
2831 /* MT753x MAC works in 1G full duplex mode for all up-clocked
2834 if (interface == PHY_INTERFACE_MODE_TRGMII ||
2835 (phy_interface_mode_is_8023z(interface))) {
2837 duplex = DUPLEX_FULL;
2842 mcr |= PMCR_FORCE_SPEED_1000;
2845 mcr |= PMCR_FORCE_SPEED_100;
2848 if (duplex == DUPLEX_FULL) {
2849 mcr |= PMCR_FORCE_FDX;
2851 mcr |= PMCR_TX_FC_EN;
2853 mcr |= PMCR_RX_FC_EN;
2856 if (mode == MLO_AN_PHY && phydev && phy_init_eee(phydev, false) >= 0) {
2859 mcr |= PMCR_FORCE_EEE1G;
2862 mcr |= PMCR_FORCE_EEE100;
2867 mt7530_set(priv, MT7530_PMCR_P(port), mcr);
2871 mt7531_cpu_port_config(struct dsa_switch *ds, int port)
2873 struct mt7530_priv *priv = ds->priv;
2874 phy_interface_t interface;
2880 if (mt7531_is_rgmii_port(priv, port))
2881 interface = PHY_INTERFACE_MODE_RGMII;
2883 interface = PHY_INTERFACE_MODE_2500BASEX;
2885 priv->p5_interface = interface;
2888 interface = PHY_INTERFACE_MODE_2500BASEX;
2890 mt7531_pad_setup(ds, interface);
2892 priv->p6_interface = interface;
2898 if (interface == PHY_INTERFACE_MODE_2500BASEX)
2903 ret = mt7531_mac_config(ds, port, MLO_AN_FIXED, interface);
2906 mt7530_write(priv, MT7530_PMCR_P(port),
2907 PMCR_CPU_PORT_SETTING(priv->id));
2908 mt753x_phylink_pcs_link_up(&priv->pcs[port].pcs, MLO_AN_FIXED,
2909 interface, speed, DUPLEX_FULL);
2910 mt753x_phylink_mac_link_up(ds, port, MLO_AN_FIXED, interface, NULL,
2911 speed, DUPLEX_FULL, true, true);
2916 static void mt753x_phylink_get_caps(struct dsa_switch *ds, int port,
2917 struct phylink_config *config)
2919 struct mt7530_priv *priv = ds->priv;
2921 /* This switch only supports full-duplex at 1Gbps */
2922 config->mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
2923 MAC_10 | MAC_100 | MAC_1000FD;
2925 /* This driver does not make use of the speed, duplex, pause or the
2926 * advertisement in its mac_config, so it is safe to mark this driver
2929 config->legacy_pre_march2020 = false;
2931 priv->info->mac_port_get_caps(ds, port, config);
2934 static int mt753x_pcs_validate(struct phylink_pcs *pcs,
2935 unsigned long *supported,
2936 const struct phylink_link_state *state)
2938 /* Autonegotiation is not supported in TRGMII nor 802.3z modes */
2939 if (state->interface == PHY_INTERFACE_MODE_TRGMII ||
2940 phy_interface_mode_is_8023z(state->interface))
2941 phylink_clear(supported, Autoneg);
2946 static void mt7530_pcs_get_state(struct phylink_pcs *pcs,
2947 struct phylink_link_state *state)
2949 struct mt7530_priv *priv = pcs_to_mt753x_pcs(pcs)->priv;
2950 int port = pcs_to_mt753x_pcs(pcs)->port;
2953 pmsr = mt7530_read(priv, MT7530_PMSR_P(port));
2955 state->link = (pmsr & PMSR_LINK);
2956 state->an_complete = state->link;
2957 state->duplex = !!(pmsr & PMSR_DPX);
2959 switch (pmsr & PMSR_SPEED_MASK) {
2961 state->speed = SPEED_10;
2963 case PMSR_SPEED_100:
2964 state->speed = SPEED_100;
2966 case PMSR_SPEED_1000:
2967 state->speed = SPEED_1000;
2970 state->speed = SPEED_UNKNOWN;
2974 state->pause &= ~(MLO_PAUSE_RX | MLO_PAUSE_TX);
2975 if (pmsr & PMSR_RX_FC)
2976 state->pause |= MLO_PAUSE_RX;
2977 if (pmsr & PMSR_TX_FC)
2978 state->pause |= MLO_PAUSE_TX;
2982 mt7531_sgmii_pcs_get_state_an(struct mt7530_priv *priv, int port,
2983 struct phylink_link_state *state)
2988 status = mt7530_read(priv, MT7531_PCS_CONTROL_1(port));
2989 state->link = !!(status & MT7531_SGMII_LINK_STATUS);
2990 if (state->interface == PHY_INTERFACE_MODE_SGMII &&
2991 (status & MT7531_SGMII_AN_ENABLE)) {
2992 val = mt7530_read(priv, MT7531_PCS_SPEED_ABILITY(port));
2993 config_reg = val >> 16;
2995 switch (config_reg & LPA_SGMII_SPD_MASK) {
2996 case LPA_SGMII_1000:
2997 state->speed = SPEED_1000;
3000 state->speed = SPEED_100;
3003 state->speed = SPEED_10;
3006 dev_err(priv->dev, "invalid sgmii PHY speed\n");
3007 state->link = false;
3011 if (config_reg & LPA_SGMII_FULL_DUPLEX)
3012 state->duplex = DUPLEX_FULL;
3014 state->duplex = DUPLEX_HALF;
3020 static void mt7531_pcs_get_state(struct phylink_pcs *pcs,
3021 struct phylink_link_state *state)
3023 struct mt7530_priv *priv = pcs_to_mt753x_pcs(pcs)->priv;
3024 int port = pcs_to_mt753x_pcs(pcs)->port;
3026 if (state->interface == PHY_INTERFACE_MODE_SGMII)
3027 mt7531_sgmii_pcs_get_state_an(priv, port, state);
3029 state->link = false;
3032 static int mt753x_pcs_config(struct phylink_pcs *pcs, unsigned int mode,
3033 phy_interface_t interface,
3034 const unsigned long *advertising,
3035 bool permit_pause_to_mac)
3040 static void mt7530_pcs_an_restart(struct phylink_pcs *pcs)
3044 static const struct phylink_pcs_ops mt7530_pcs_ops = {
3045 .pcs_validate = mt753x_pcs_validate,
3046 .pcs_get_state = mt7530_pcs_get_state,
3047 .pcs_config = mt753x_pcs_config,
3048 .pcs_an_restart = mt7530_pcs_an_restart,
3051 static const struct phylink_pcs_ops mt7531_pcs_ops = {
3052 .pcs_validate = mt753x_pcs_validate,
3053 .pcs_get_state = mt7531_pcs_get_state,
3054 .pcs_config = mt753x_pcs_config,
3055 .pcs_an_restart = mt7531_pcs_an_restart,
3056 .pcs_link_up = mt7531_pcs_link_up,
3060 mt753x_setup(struct dsa_switch *ds)
3062 struct mt7530_priv *priv = ds->priv;
3065 /* Initialise the PCS devices */
3066 for (i = 0; i < priv->ds->num_ports; i++) {
3067 priv->pcs[i].pcs.ops = priv->info->pcs_ops;
3068 priv->pcs[i].priv = priv;
3069 priv->pcs[i].port = i;
3072 ret = priv->info->sw_setup(ds);
3076 ret = mt7530_setup_irq(priv);
3080 ret = mt7530_setup_mdio(priv);
3081 if (ret && priv->irq)
3082 mt7530_free_irq_common(priv);
3087 static int mt753x_get_mac_eee(struct dsa_switch *ds, int port,
3088 struct ethtool_eee *e)
3090 struct mt7530_priv *priv = ds->priv;
3091 u32 eeecr = mt7530_read(priv, MT7530_PMEEECR_P(port));
3093 e->tx_lpi_enabled = !(eeecr & LPI_MODE_EN);
3094 e->tx_lpi_timer = GET_LPI_THRESH(eeecr);
3099 static int mt753x_set_mac_eee(struct dsa_switch *ds, int port,
3100 struct ethtool_eee *e)
3102 struct mt7530_priv *priv = ds->priv;
3103 u32 set, mask = LPI_THRESH_MASK | LPI_MODE_EN;
3105 if (e->tx_lpi_timer > 0xFFF)
3108 set = SET_LPI_THRESH(e->tx_lpi_timer);
3109 if (!e->tx_lpi_enabled)
3110 /* Force LPI Mode without a delay */
3112 mt7530_rmw(priv, MT7530_PMEEECR_P(port), mask, set);
3117 static const struct dsa_switch_ops mt7530_switch_ops = {
3118 .get_tag_protocol = mtk_get_tag_protocol,
3119 .setup = mt753x_setup,
3120 .get_strings = mt7530_get_strings,
3121 .get_ethtool_stats = mt7530_get_ethtool_stats,
3122 .get_sset_count = mt7530_get_sset_count,
3123 .set_ageing_time = mt7530_set_ageing_time,
3124 .port_enable = mt7530_port_enable,
3125 .port_disable = mt7530_port_disable,
3126 .port_change_mtu = mt7530_port_change_mtu,
3127 .port_max_mtu = mt7530_port_max_mtu,
3128 .port_stp_state_set = mt7530_stp_state_set,
3129 .port_pre_bridge_flags = mt7530_port_pre_bridge_flags,
3130 .port_bridge_flags = mt7530_port_bridge_flags,
3131 .port_bridge_join = mt7530_port_bridge_join,
3132 .port_bridge_leave = mt7530_port_bridge_leave,
3133 .port_fdb_add = mt7530_port_fdb_add,
3134 .port_fdb_del = mt7530_port_fdb_del,
3135 .port_fdb_dump = mt7530_port_fdb_dump,
3136 .port_mdb_add = mt7530_port_mdb_add,
3137 .port_mdb_del = mt7530_port_mdb_del,
3138 .port_vlan_filtering = mt7530_port_vlan_filtering,
3139 .port_vlan_add = mt7530_port_vlan_add,
3140 .port_vlan_del = mt7530_port_vlan_del,
3141 .port_mirror_add = mt753x_port_mirror_add,
3142 .port_mirror_del = mt753x_port_mirror_del,
3143 .phylink_get_caps = mt753x_phylink_get_caps,
3144 .phylink_mac_select_pcs = mt753x_phylink_mac_select_pcs,
3145 .phylink_mac_config = mt753x_phylink_mac_config,
3146 .phylink_mac_link_down = mt753x_phylink_mac_link_down,
3147 .phylink_mac_link_up = mt753x_phylink_mac_link_up,
3148 .get_mac_eee = mt753x_get_mac_eee,
3149 .set_mac_eee = mt753x_set_mac_eee,
3152 static const struct mt753x_info mt753x_table[] = {
3155 .pcs_ops = &mt7530_pcs_ops,
3156 .sw_setup = mt7530_setup,
3157 .phy_read = mt7530_phy_read,
3158 .phy_write = mt7530_phy_write,
3159 .pad_setup = mt7530_pad_clk_setup,
3160 .mac_port_get_caps = mt7530_mac_port_get_caps,
3161 .mac_port_config = mt7530_mac_config,
3165 .pcs_ops = &mt7530_pcs_ops,
3166 .sw_setup = mt7530_setup,
3167 .phy_read = mt7530_phy_read,
3168 .phy_write = mt7530_phy_write,
3169 .pad_setup = mt7530_pad_clk_setup,
3170 .mac_port_get_caps = mt7530_mac_port_get_caps,
3171 .mac_port_config = mt7530_mac_config,
3175 .pcs_ops = &mt7531_pcs_ops,
3176 .sw_setup = mt7531_setup,
3177 .phy_read = mt7531_ind_phy_read,
3178 .phy_write = mt7531_ind_phy_write,
3179 .pad_setup = mt7531_pad_setup,
3180 .cpu_port_config = mt7531_cpu_port_config,
3181 .mac_port_get_caps = mt7531_mac_port_get_caps,
3182 .mac_port_config = mt7531_mac_config,
3186 static const struct of_device_id mt7530_of_match[] = {
3187 { .compatible = "mediatek,mt7621", .data = &mt753x_table[ID_MT7621], },
3188 { .compatible = "mediatek,mt7530", .data = &mt753x_table[ID_MT7530], },
3189 { .compatible = "mediatek,mt7531", .data = &mt753x_table[ID_MT7531], },
3192 MODULE_DEVICE_TABLE(of, mt7530_of_match);
3195 mt7530_probe(struct mdio_device *mdiodev)
3197 struct mt7530_priv *priv;
3198 struct device_node *dn;
3200 dn = mdiodev->dev.of_node;
3202 priv = devm_kzalloc(&mdiodev->dev, sizeof(*priv), GFP_KERNEL);
3206 priv->ds = devm_kzalloc(&mdiodev->dev, sizeof(*priv->ds), GFP_KERNEL);
3210 priv->ds->dev = &mdiodev->dev;
3211 priv->ds->num_ports = MT7530_NUM_PORTS;
3213 /* Use medatek,mcm property to distinguish hardware type that would
3214 * casues a little bit differences on power-on sequence.
3216 priv->mcm = of_property_read_bool(dn, "mediatek,mcm");
3218 dev_info(&mdiodev->dev, "MT7530 adapts as multi-chip module\n");
3220 priv->rstc = devm_reset_control_get(&mdiodev->dev, "mcm");
3221 if (IS_ERR(priv->rstc)) {
3222 dev_err(&mdiodev->dev, "Couldn't get our reset line\n");
3223 return PTR_ERR(priv->rstc);
3227 /* Get the hardware identifier from the devicetree node.
3228 * We will need it for some of the clock and regulator setup.
3230 priv->info = of_device_get_match_data(&mdiodev->dev);
3234 /* Sanity check if these required device operations are filled
3237 if (!priv->info->sw_setup || !priv->info->pad_setup ||
3238 !priv->info->phy_read || !priv->info->phy_write ||
3239 !priv->info->mac_port_get_caps ||
3240 !priv->info->mac_port_config)
3243 priv->id = priv->info->id;
3245 if (priv->id == ID_MT7530) {
3246 priv->core_pwr = devm_regulator_get(&mdiodev->dev, "core");
3247 if (IS_ERR(priv->core_pwr))
3248 return PTR_ERR(priv->core_pwr);
3250 priv->io_pwr = devm_regulator_get(&mdiodev->dev, "io");
3251 if (IS_ERR(priv->io_pwr))
3252 return PTR_ERR(priv->io_pwr);
3255 /* Not MCM that indicates switch works as the remote standalone
3256 * integrated circuit so the GPIO pin would be used to complete
3257 * the reset, otherwise memory-mapped register accessing used
3258 * through syscon provides in the case of MCM.
3261 priv->reset = devm_gpiod_get_optional(&mdiodev->dev, "reset",
3263 if (IS_ERR(priv->reset)) {
3264 dev_err(&mdiodev->dev, "Couldn't get our reset line\n");
3265 return PTR_ERR(priv->reset);
3269 priv->bus = mdiodev->bus;
3270 priv->dev = &mdiodev->dev;
3271 priv->ds->priv = priv;
3272 priv->ds->ops = &mt7530_switch_ops;
3273 mutex_init(&priv->reg_mutex);
3274 dev_set_drvdata(&mdiodev->dev, priv);
3276 return dsa_register_switch(priv->ds);
3280 mt7530_remove(struct mdio_device *mdiodev)
3282 struct mt7530_priv *priv = dev_get_drvdata(&mdiodev->dev);
3288 ret = regulator_disable(priv->core_pwr);
3291 "Failed to disable core power: %d\n", ret);
3293 ret = regulator_disable(priv->io_pwr);
3295 dev_err(priv->dev, "Failed to disable io pwr: %d\n",
3299 mt7530_free_irq(priv);
3301 dsa_unregister_switch(priv->ds);
3302 mutex_destroy(&priv->reg_mutex);
3304 dev_set_drvdata(&mdiodev->dev, NULL);
3307 static void mt7530_shutdown(struct mdio_device *mdiodev)
3309 struct mt7530_priv *priv = dev_get_drvdata(&mdiodev->dev);
3314 dsa_switch_shutdown(priv->ds);
3316 dev_set_drvdata(&mdiodev->dev, NULL);
3319 static struct mdio_driver mt7530_mdio_driver = {
3320 .probe = mt7530_probe,
3321 .remove = mt7530_remove,
3322 .shutdown = mt7530_shutdown,
3325 .of_match_table = mt7530_of_match,
3329 mdio_module_driver(mt7530_mdio_driver);
3331 MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
3332 MODULE_DESCRIPTION("Driver for Mediatek MT7530 Switch");
3333 MODULE_LICENSE("GPL");