1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2018 MediaTek Inc.
5 #include <linux/bitfield.h>
7 #include <linux/mfd/syscon.h>
8 #include <linux/module.h>
10 #include <linux/of_device.h>
11 #include <linux/of_net.h>
12 #include <linux/regmap.h>
13 #include <linux/stmmac.h>
16 #include "stmmac_platform.h"
18 /* Peri Configuration register for mt2712 */
19 #define PERI_ETH_PHY_INTF_SEL 0x418
20 #define PHY_INTF_MII 0
21 #define PHY_INTF_RGMII 1
22 #define PHY_INTF_RMII 4
23 #define RMII_CLK_SRC_RXC BIT(4)
24 #define RMII_CLK_SRC_INTERNAL BIT(5)
26 #define PERI_ETH_DLY 0x428
27 #define ETH_DLY_GTXC_INV BIT(6)
28 #define ETH_DLY_GTXC_ENABLE BIT(5)
29 #define ETH_DLY_GTXC_STAGES GENMASK(4, 0)
30 #define ETH_DLY_TXC_INV BIT(20)
31 #define ETH_DLY_TXC_ENABLE BIT(19)
32 #define ETH_DLY_TXC_STAGES GENMASK(18, 14)
33 #define ETH_DLY_RXC_INV BIT(13)
34 #define ETH_DLY_RXC_ENABLE BIT(12)
35 #define ETH_DLY_RXC_STAGES GENMASK(11, 7)
37 #define PERI_ETH_DLY_FINE 0x800
38 #define ETH_RMII_DLY_TX_INV BIT(2)
39 #define ETH_FINE_DLY_GTXC BIT(1)
40 #define ETH_FINE_DLY_RXC BIT(0)
42 /* Peri Configuration register for mt8195 */
43 #define MT8195_PERI_ETH_CTRL0 0xFD0
44 #define MT8195_RMII_CLK_SRC_INTERNAL BIT(28)
45 #define MT8195_RMII_CLK_SRC_RXC BIT(27)
46 #define MT8195_ETH_INTF_SEL GENMASK(26, 24)
47 #define MT8195_RGMII_TXC_PHASE_CTRL BIT(22)
48 #define MT8195_EXT_PHY_MODE BIT(21)
49 #define MT8195_DLY_GTXC_INV BIT(12)
50 #define MT8195_DLY_GTXC_ENABLE BIT(5)
51 #define MT8195_DLY_GTXC_STAGES GENMASK(4, 0)
53 #define MT8195_PERI_ETH_CTRL1 0xFD4
54 #define MT8195_DLY_RXC_INV BIT(25)
55 #define MT8195_DLY_RXC_ENABLE BIT(18)
56 #define MT8195_DLY_RXC_STAGES GENMASK(17, 13)
57 #define MT8195_DLY_TXC_INV BIT(12)
58 #define MT8195_DLY_TXC_ENABLE BIT(5)
59 #define MT8195_DLY_TXC_STAGES GENMASK(4, 0)
61 #define MT8195_PERI_ETH_CTRL2 0xFD8
62 #define MT8195_DLY_RMII_RXC_INV BIT(25)
63 #define MT8195_DLY_RMII_RXC_ENABLE BIT(18)
64 #define MT8195_DLY_RMII_RXC_STAGES GENMASK(17, 13)
65 #define MT8195_DLY_RMII_TXC_INV BIT(12)
66 #define MT8195_DLY_RMII_TXC_ENABLE BIT(5)
67 #define MT8195_DLY_RMII_TXC_STAGES GENMASK(4, 0)
69 struct mac_delay_struct {
76 struct mediatek_dwmac_plat_data {
77 const struct mediatek_dwmac_variant *variant;
78 struct mac_delay_struct mac_delay;
79 struct clk *rmii_internal_clk;
80 struct clk_bulk_data *clks;
81 struct regmap *peri_regmap;
82 struct device_node *np;
84 phy_interface_t phy_mode;
85 bool rmii_clk_from_mac;
90 struct mediatek_dwmac_variant {
91 int (*dwmac_set_phy_interface)(struct mediatek_dwmac_plat_data *plat);
92 int (*dwmac_set_delay)(struct mediatek_dwmac_plat_data *plat);
93 void (*dwmac_fix_mac_speed)(void *priv, unsigned int speed);
95 /* clock ids to be requested */
96 const char * const *clk_list;
104 /* list of clocks required for mac */
105 static const char * const mt2712_dwmac_clk_l[] = {
106 "axi", "apb", "mac_main", "ptp_ref"
109 static const char * const mt8195_dwmac_clk_l[] = {
110 "axi", "apb", "mac_cg", "mac_main", "ptp_ref"
113 static int mt2712_set_interface(struct mediatek_dwmac_plat_data *plat)
115 int rmii_clk_from_mac = plat->rmii_clk_from_mac ? RMII_CLK_SRC_INTERNAL : 0;
116 int rmii_rxc = plat->rmii_rxc ? RMII_CLK_SRC_RXC : 0;
119 /* select phy interface in top control domain */
120 switch (plat->phy_mode) {
121 case PHY_INTERFACE_MODE_MII:
122 intf_val |= PHY_INTF_MII;
124 case PHY_INTERFACE_MODE_RMII:
125 intf_val |= (PHY_INTF_RMII | rmii_rxc | rmii_clk_from_mac);
127 case PHY_INTERFACE_MODE_RGMII:
128 case PHY_INTERFACE_MODE_RGMII_TXID:
129 case PHY_INTERFACE_MODE_RGMII_RXID:
130 case PHY_INTERFACE_MODE_RGMII_ID:
131 intf_val |= PHY_INTF_RGMII;
134 dev_err(plat->dev, "phy interface not supported\n");
138 regmap_write(plat->peri_regmap, PERI_ETH_PHY_INTF_SEL, intf_val);
143 static void mt2712_delay_ps2stage(struct mediatek_dwmac_plat_data *plat)
145 struct mac_delay_struct *mac_delay = &plat->mac_delay;
147 switch (plat->phy_mode) {
148 case PHY_INTERFACE_MODE_MII:
149 case PHY_INTERFACE_MODE_RMII:
150 /* 550ps per stage for MII/RMII */
151 mac_delay->tx_delay /= 550;
152 mac_delay->rx_delay /= 550;
154 case PHY_INTERFACE_MODE_RGMII:
155 case PHY_INTERFACE_MODE_RGMII_TXID:
156 case PHY_INTERFACE_MODE_RGMII_RXID:
157 case PHY_INTERFACE_MODE_RGMII_ID:
158 /* 170ps per stage for RGMII */
159 mac_delay->tx_delay /= 170;
160 mac_delay->rx_delay /= 170;
163 dev_err(plat->dev, "phy interface not supported\n");
168 static void mt2712_delay_stage2ps(struct mediatek_dwmac_plat_data *plat)
170 struct mac_delay_struct *mac_delay = &plat->mac_delay;
172 switch (plat->phy_mode) {
173 case PHY_INTERFACE_MODE_MII:
174 case PHY_INTERFACE_MODE_RMII:
175 /* 550ps per stage for MII/RMII */
176 mac_delay->tx_delay *= 550;
177 mac_delay->rx_delay *= 550;
179 case PHY_INTERFACE_MODE_RGMII:
180 case PHY_INTERFACE_MODE_RGMII_TXID:
181 case PHY_INTERFACE_MODE_RGMII_RXID:
182 case PHY_INTERFACE_MODE_RGMII_ID:
183 /* 170ps per stage for RGMII */
184 mac_delay->tx_delay *= 170;
185 mac_delay->rx_delay *= 170;
188 dev_err(plat->dev, "phy interface not supported\n");
193 static int mt2712_set_delay(struct mediatek_dwmac_plat_data *plat)
195 struct mac_delay_struct *mac_delay = &plat->mac_delay;
196 u32 delay_val = 0, fine_val = 0;
198 mt2712_delay_ps2stage(plat);
200 switch (plat->phy_mode) {
201 case PHY_INTERFACE_MODE_MII:
202 delay_val |= FIELD_PREP(ETH_DLY_TXC_ENABLE, !!mac_delay->tx_delay);
203 delay_val |= FIELD_PREP(ETH_DLY_TXC_STAGES, mac_delay->tx_delay);
204 delay_val |= FIELD_PREP(ETH_DLY_TXC_INV, mac_delay->tx_inv);
206 delay_val |= FIELD_PREP(ETH_DLY_RXC_ENABLE, !!mac_delay->rx_delay);
207 delay_val |= FIELD_PREP(ETH_DLY_RXC_STAGES, mac_delay->rx_delay);
208 delay_val |= FIELD_PREP(ETH_DLY_RXC_INV, mac_delay->rx_inv);
210 case PHY_INTERFACE_MODE_RMII:
211 if (plat->rmii_clk_from_mac) {
212 /* case 1: mac provides the rmii reference clock,
213 * and the clock output to TXC pin.
214 * The egress timing can be adjusted by GTXC delay macro circuit.
215 * The ingress timing can be adjusted by TXC delay macro circuit.
217 delay_val |= FIELD_PREP(ETH_DLY_TXC_ENABLE, !!mac_delay->rx_delay);
218 delay_val |= FIELD_PREP(ETH_DLY_TXC_STAGES, mac_delay->rx_delay);
219 delay_val |= FIELD_PREP(ETH_DLY_TXC_INV, mac_delay->rx_inv);
221 delay_val |= FIELD_PREP(ETH_DLY_GTXC_ENABLE, !!mac_delay->tx_delay);
222 delay_val |= FIELD_PREP(ETH_DLY_GTXC_STAGES, mac_delay->tx_delay);
223 delay_val |= FIELD_PREP(ETH_DLY_GTXC_INV, mac_delay->tx_inv);
225 /* case 2: the rmii reference clock is from external phy,
226 * and the property "rmii_rxc" indicates which pin(TXC/RXC)
227 * the reference clk is connected to. The reference clock is a
228 * received signal, so rx_delay/rx_inv are used to indicate
229 * the reference clock timing adjustment
231 if (plat->rmii_rxc) {
232 /* the rmii reference clock from outside is connected
233 * to RXC pin, the reference clock will be adjusted
234 * by RXC delay macro circuit.
236 delay_val |= FIELD_PREP(ETH_DLY_RXC_ENABLE, !!mac_delay->rx_delay);
237 delay_val |= FIELD_PREP(ETH_DLY_RXC_STAGES, mac_delay->rx_delay);
238 delay_val |= FIELD_PREP(ETH_DLY_RXC_INV, mac_delay->rx_inv);
240 /* the rmii reference clock from outside is connected
241 * to TXC pin, the reference clock will be adjusted
242 * by TXC delay macro circuit.
244 delay_val |= FIELD_PREP(ETH_DLY_TXC_ENABLE, !!mac_delay->rx_delay);
245 delay_val |= FIELD_PREP(ETH_DLY_TXC_STAGES, mac_delay->rx_delay);
246 delay_val |= FIELD_PREP(ETH_DLY_TXC_INV, mac_delay->rx_inv);
248 /* tx_inv will inverse the tx clock inside mac relateive to
249 * reference clock from external phy,
250 * and this bit is located in the same register with fine-tune
252 if (mac_delay->tx_inv)
253 fine_val = ETH_RMII_DLY_TX_INV;
256 case PHY_INTERFACE_MODE_RGMII:
257 case PHY_INTERFACE_MODE_RGMII_TXID:
258 case PHY_INTERFACE_MODE_RGMII_RXID:
259 case PHY_INTERFACE_MODE_RGMII_ID:
260 fine_val = ETH_FINE_DLY_GTXC | ETH_FINE_DLY_RXC;
262 delay_val |= FIELD_PREP(ETH_DLY_GTXC_ENABLE, !!mac_delay->tx_delay);
263 delay_val |= FIELD_PREP(ETH_DLY_GTXC_STAGES, mac_delay->tx_delay);
264 delay_val |= FIELD_PREP(ETH_DLY_GTXC_INV, mac_delay->tx_inv);
266 delay_val |= FIELD_PREP(ETH_DLY_RXC_ENABLE, !!mac_delay->rx_delay);
267 delay_val |= FIELD_PREP(ETH_DLY_RXC_STAGES, mac_delay->rx_delay);
268 delay_val |= FIELD_PREP(ETH_DLY_RXC_INV, mac_delay->rx_inv);
271 dev_err(plat->dev, "phy interface not supported\n");
274 regmap_write(plat->peri_regmap, PERI_ETH_DLY, delay_val);
275 regmap_write(plat->peri_regmap, PERI_ETH_DLY_FINE, fine_val);
277 mt2712_delay_stage2ps(plat);
282 static const struct mediatek_dwmac_variant mt2712_gmac_variant = {
283 .dwmac_set_phy_interface = mt2712_set_interface,
284 .dwmac_set_delay = mt2712_set_delay,
285 .clk_list = mt2712_dwmac_clk_l,
286 .num_clks = ARRAY_SIZE(mt2712_dwmac_clk_l),
288 .rx_delay_max = 17600,
289 .tx_delay_max = 17600,
292 static int mt8195_set_interface(struct mediatek_dwmac_plat_data *plat)
294 int rmii_clk_from_mac = plat->rmii_clk_from_mac ? MT8195_RMII_CLK_SRC_INTERNAL : 0;
295 int rmii_rxc = plat->rmii_rxc ? MT8195_RMII_CLK_SRC_RXC : 0;
298 /* select phy interface in top control domain */
299 switch (plat->phy_mode) {
300 case PHY_INTERFACE_MODE_MII:
301 intf_val |= FIELD_PREP(MT8195_ETH_INTF_SEL, PHY_INTF_MII);
303 case PHY_INTERFACE_MODE_RMII:
304 intf_val |= (rmii_rxc | rmii_clk_from_mac);
305 intf_val |= FIELD_PREP(MT8195_ETH_INTF_SEL, PHY_INTF_RMII);
307 case PHY_INTERFACE_MODE_RGMII:
308 case PHY_INTERFACE_MODE_RGMII_TXID:
309 case PHY_INTERFACE_MODE_RGMII_RXID:
310 case PHY_INTERFACE_MODE_RGMII_ID:
311 intf_val |= FIELD_PREP(MT8195_ETH_INTF_SEL, PHY_INTF_RGMII);
314 dev_err(plat->dev, "phy interface not supported\n");
318 /* MT8195 only support external PHY */
319 intf_val |= MT8195_EXT_PHY_MODE;
321 regmap_write(plat->peri_regmap, MT8195_PERI_ETH_CTRL0, intf_val);
326 static void mt8195_delay_ps2stage(struct mediatek_dwmac_plat_data *plat)
328 struct mac_delay_struct *mac_delay = &plat->mac_delay;
330 /* 290ps per stage */
331 mac_delay->tx_delay /= 290;
332 mac_delay->rx_delay /= 290;
335 static void mt8195_delay_stage2ps(struct mediatek_dwmac_plat_data *plat)
337 struct mac_delay_struct *mac_delay = &plat->mac_delay;
339 /* 290ps per stage */
340 mac_delay->tx_delay *= 290;
341 mac_delay->rx_delay *= 290;
344 static int mt8195_set_delay(struct mediatek_dwmac_plat_data *plat)
346 struct mac_delay_struct *mac_delay = &plat->mac_delay;
347 u32 gtxc_delay_val = 0, delay_val = 0, rmii_delay_val = 0;
349 mt8195_delay_ps2stage(plat);
351 switch (plat->phy_mode) {
352 case PHY_INTERFACE_MODE_MII:
353 delay_val |= FIELD_PREP(MT8195_DLY_TXC_ENABLE, !!mac_delay->tx_delay);
354 delay_val |= FIELD_PREP(MT8195_DLY_TXC_STAGES, mac_delay->tx_delay);
355 delay_val |= FIELD_PREP(MT8195_DLY_TXC_INV, mac_delay->tx_inv);
357 delay_val |= FIELD_PREP(MT8195_DLY_RXC_ENABLE, !!mac_delay->rx_delay);
358 delay_val |= FIELD_PREP(MT8195_DLY_RXC_STAGES, mac_delay->rx_delay);
359 delay_val |= FIELD_PREP(MT8195_DLY_RXC_INV, mac_delay->rx_inv);
361 case PHY_INTERFACE_MODE_RMII:
362 if (plat->rmii_clk_from_mac) {
363 /* case 1: mac provides the rmii reference clock,
364 * and the clock output to TXC pin.
365 * The egress timing can be adjusted by RMII_TXC delay macro circuit.
366 * The ingress timing can be adjusted by RMII_RXC delay macro circuit.
368 rmii_delay_val |= FIELD_PREP(MT8195_DLY_RMII_TXC_ENABLE,
369 !!mac_delay->tx_delay);
370 rmii_delay_val |= FIELD_PREP(MT8195_DLY_RMII_TXC_STAGES,
371 mac_delay->tx_delay);
372 rmii_delay_val |= FIELD_PREP(MT8195_DLY_RMII_TXC_INV,
375 rmii_delay_val |= FIELD_PREP(MT8195_DLY_RMII_RXC_ENABLE,
376 !!mac_delay->rx_delay);
377 rmii_delay_val |= FIELD_PREP(MT8195_DLY_RMII_RXC_STAGES,
378 mac_delay->rx_delay);
379 rmii_delay_val |= FIELD_PREP(MT8195_DLY_RMII_RXC_INV,
382 /* case 2: the rmii reference clock is from external phy,
383 * and the property "rmii_rxc" indicates which pin(TXC/RXC)
384 * the reference clk is connected to. The reference clock is a
385 * received signal, so rx_delay/rx_inv are used to indicate
386 * the reference clock timing adjustment
388 if (plat->rmii_rxc) {
389 /* the rmii reference clock from outside is connected
390 * to RXC pin, the reference clock will be adjusted
391 * by RXC delay macro circuit.
393 delay_val |= FIELD_PREP(MT8195_DLY_RXC_ENABLE,
394 !!mac_delay->rx_delay);
395 delay_val |= FIELD_PREP(MT8195_DLY_RXC_STAGES,
396 mac_delay->rx_delay);
397 delay_val |= FIELD_PREP(MT8195_DLY_RXC_INV,
400 /* the rmii reference clock from outside is connected
401 * to TXC pin, the reference clock will be adjusted
402 * by TXC delay macro circuit.
404 delay_val |= FIELD_PREP(MT8195_DLY_TXC_ENABLE,
405 !!mac_delay->rx_delay);
406 delay_val |= FIELD_PREP(MT8195_DLY_TXC_STAGES,
407 mac_delay->rx_delay);
408 delay_val |= FIELD_PREP(MT8195_DLY_TXC_INV,
413 case PHY_INTERFACE_MODE_RGMII:
414 case PHY_INTERFACE_MODE_RGMII_TXID:
415 case PHY_INTERFACE_MODE_RGMII_RXID:
416 case PHY_INTERFACE_MODE_RGMII_ID:
417 gtxc_delay_val |= FIELD_PREP(MT8195_DLY_GTXC_ENABLE, !!mac_delay->tx_delay);
418 gtxc_delay_val |= FIELD_PREP(MT8195_DLY_GTXC_STAGES, mac_delay->tx_delay);
419 gtxc_delay_val |= FIELD_PREP(MT8195_DLY_GTXC_INV, mac_delay->tx_inv);
421 delay_val |= FIELD_PREP(MT8195_DLY_RXC_ENABLE, !!mac_delay->rx_delay);
422 delay_val |= FIELD_PREP(MT8195_DLY_RXC_STAGES, mac_delay->rx_delay);
423 delay_val |= FIELD_PREP(MT8195_DLY_RXC_INV, mac_delay->rx_inv);
427 dev_err(plat->dev, "phy interface not supported\n");
431 regmap_update_bits(plat->peri_regmap,
432 MT8195_PERI_ETH_CTRL0,
433 MT8195_RGMII_TXC_PHASE_CTRL |
434 MT8195_DLY_GTXC_INV |
435 MT8195_DLY_GTXC_ENABLE |
436 MT8195_DLY_GTXC_STAGES,
438 regmap_write(plat->peri_regmap, MT8195_PERI_ETH_CTRL1, delay_val);
439 regmap_write(plat->peri_regmap, MT8195_PERI_ETH_CTRL2, rmii_delay_val);
441 mt8195_delay_stage2ps(plat);
446 static void mt8195_fix_mac_speed(void *priv, unsigned int speed)
448 struct mediatek_dwmac_plat_data *priv_plat = priv;
450 if ((phy_interface_mode_is_rgmii(priv_plat->phy_mode))) {
451 /* prefer 2ns fixed delay which is controlled by TXC_PHASE_CTRL,
452 * when link speed is 1Gbps with RGMII interface,
453 * Fall back to delay macro circuit for 10/100Mbps link speed.
455 if (speed == SPEED_1000)
456 regmap_update_bits(priv_plat->peri_regmap,
457 MT8195_PERI_ETH_CTRL0,
458 MT8195_RGMII_TXC_PHASE_CTRL |
459 MT8195_DLY_GTXC_ENABLE |
460 MT8195_DLY_GTXC_INV |
461 MT8195_DLY_GTXC_STAGES,
462 MT8195_RGMII_TXC_PHASE_CTRL);
464 mt8195_set_delay(priv_plat);
468 static const struct mediatek_dwmac_variant mt8195_gmac_variant = {
469 .dwmac_set_phy_interface = mt8195_set_interface,
470 .dwmac_set_delay = mt8195_set_delay,
471 .dwmac_fix_mac_speed = mt8195_fix_mac_speed,
472 .clk_list = mt8195_dwmac_clk_l,
473 .num_clks = ARRAY_SIZE(mt8195_dwmac_clk_l),
475 .rx_delay_max = 9280,
476 .tx_delay_max = 9280,
479 static int mediatek_dwmac_config_dt(struct mediatek_dwmac_plat_data *plat)
481 struct mac_delay_struct *mac_delay = &plat->mac_delay;
482 u32 tx_delay_ps, rx_delay_ps;
485 plat->peri_regmap = syscon_regmap_lookup_by_phandle(plat->np, "mediatek,pericfg");
486 if (IS_ERR(plat->peri_regmap)) {
487 dev_err(plat->dev, "Failed to get pericfg syscon\n");
488 return PTR_ERR(plat->peri_regmap);
491 err = of_get_phy_mode(plat->np, &plat->phy_mode);
493 dev_err(plat->dev, "not find phy-mode\n");
497 if (!of_property_read_u32(plat->np, "mediatek,tx-delay-ps", &tx_delay_ps)) {
498 if (tx_delay_ps < plat->variant->tx_delay_max) {
499 mac_delay->tx_delay = tx_delay_ps;
501 dev_err(plat->dev, "Invalid TX clock delay: %dps\n", tx_delay_ps);
506 if (!of_property_read_u32(plat->np, "mediatek,rx-delay-ps", &rx_delay_ps)) {
507 if (rx_delay_ps < plat->variant->rx_delay_max) {
508 mac_delay->rx_delay = rx_delay_ps;
510 dev_err(plat->dev, "Invalid RX clock delay: %dps\n", rx_delay_ps);
515 mac_delay->tx_inv = of_property_read_bool(plat->np, "mediatek,txc-inverse");
516 mac_delay->rx_inv = of_property_read_bool(plat->np, "mediatek,rxc-inverse");
517 plat->rmii_rxc = of_property_read_bool(plat->np, "mediatek,rmii-rxc");
518 plat->rmii_clk_from_mac = of_property_read_bool(plat->np, "mediatek,rmii-clk-from-mac");
519 plat->mac_wol = of_property_read_bool(plat->np, "mediatek,mac-wol");
524 static int mediatek_dwmac_clk_init(struct mediatek_dwmac_plat_data *plat)
526 const struct mediatek_dwmac_variant *variant = plat->variant;
529 plat->clks = devm_kcalloc(plat->dev, variant->num_clks, sizeof(*plat->clks), GFP_KERNEL);
533 for (i = 0; i < variant->num_clks; i++)
534 plat->clks[i].id = variant->clk_list[i];
536 ret = devm_clk_bulk_get(plat->dev, variant->num_clks, plat->clks);
540 /* The clock labeled as "rmii_internal" is needed only in RMII(when
541 * MAC provides the reference clock), and useless for RGMII/MII or
542 * RMII(when PHY provides the reference clock).
543 * So, "rmii_internal" clock is got and configured only when
544 * reference clock of RMII is from MAC.
546 if (plat->rmii_clk_from_mac) {
547 plat->rmii_internal_clk = devm_clk_get(plat->dev, "rmii_internal");
548 if (IS_ERR(plat->rmii_internal_clk))
549 ret = PTR_ERR(plat->rmii_internal_clk);
551 plat->rmii_internal_clk = NULL;
557 static int mediatek_dwmac_init(struct platform_device *pdev, void *priv)
559 struct mediatek_dwmac_plat_data *plat = priv;
560 const struct mediatek_dwmac_variant *variant = plat->variant;
563 if (variant->dwmac_set_phy_interface) {
564 ret = variant->dwmac_set_phy_interface(plat);
566 dev_err(plat->dev, "failed to set phy interface, err = %d\n", ret);
571 if (variant->dwmac_set_delay) {
572 ret = variant->dwmac_set_delay(plat);
574 dev_err(plat->dev, "failed to set delay value, err = %d\n", ret);
582 static int mediatek_dwmac_clks_config(void *priv, bool enabled)
584 struct mediatek_dwmac_plat_data *plat = priv;
585 const struct mediatek_dwmac_variant *variant = plat->variant;
589 ret = clk_bulk_prepare_enable(variant->num_clks, plat->clks);
591 dev_err(plat->dev, "failed to enable clks, err = %d\n", ret);
595 ret = clk_prepare_enable(plat->rmii_internal_clk);
597 dev_err(plat->dev, "failed to enable rmii internal clk, err = %d\n", ret);
601 clk_disable_unprepare(plat->rmii_internal_clk);
602 clk_bulk_disable_unprepare(variant->num_clks, plat->clks);
608 static int mediatek_dwmac_common_data(struct platform_device *pdev,
609 struct plat_stmmacenet_data *plat,
610 struct mediatek_dwmac_plat_data *priv_plat)
614 plat->interface = priv_plat->phy_mode;
615 plat->use_phy_wol = priv_plat->mac_wol ? 0 : 1;
617 plat->maxmtu = ETH_DATA_LEN;
618 plat->addr64 = priv_plat->variant->dma_bit_mask;
619 plat->bsp_priv = priv_plat;
620 plat->init = mediatek_dwmac_init;
621 plat->clks_config = mediatek_dwmac_clks_config;
622 if (priv_plat->variant->dwmac_fix_mac_speed)
623 plat->fix_mac_speed = priv_plat->variant->dwmac_fix_mac_speed;
625 plat->safety_feat_cfg = devm_kzalloc(&pdev->dev,
626 sizeof(*plat->safety_feat_cfg),
628 if (!plat->safety_feat_cfg)
631 plat->safety_feat_cfg->tsoee = 1;
632 plat->safety_feat_cfg->mrxpee = 0;
633 plat->safety_feat_cfg->mestee = 1;
634 plat->safety_feat_cfg->mrxee = 1;
635 plat->safety_feat_cfg->mtxee = 1;
636 plat->safety_feat_cfg->epsi = 0;
637 plat->safety_feat_cfg->edpp = 1;
638 plat->safety_feat_cfg->prtyen = 1;
639 plat->safety_feat_cfg->tmouten = 1;
641 for (i = 0; i < plat->tx_queues_to_use; i++) {
642 /* Default TX Q0 to use TSO and rest TXQ for TBS */
644 plat->tx_queues_cfg[i].tbs_en = 1;
650 static int mediatek_dwmac_probe(struct platform_device *pdev)
652 struct mediatek_dwmac_plat_data *priv_plat;
653 struct plat_stmmacenet_data *plat_dat;
654 struct stmmac_resources stmmac_res;
657 priv_plat = devm_kzalloc(&pdev->dev, sizeof(*priv_plat), GFP_KERNEL);
661 priv_plat->variant = of_device_get_match_data(&pdev->dev);
662 if (!priv_plat->variant) {
663 dev_err(&pdev->dev, "Missing dwmac-mediatek variant\n");
667 priv_plat->dev = &pdev->dev;
668 priv_plat->np = pdev->dev.of_node;
670 ret = mediatek_dwmac_config_dt(priv_plat);
674 ret = mediatek_dwmac_clk_init(priv_plat);
678 ret = stmmac_get_platform_resources(pdev, &stmmac_res);
682 plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
683 if (IS_ERR(plat_dat))
684 return PTR_ERR(plat_dat);
686 mediatek_dwmac_common_data(pdev, plat_dat, priv_plat);
687 mediatek_dwmac_init(pdev, priv_plat);
689 ret = mediatek_dwmac_clks_config(priv_plat, true);
693 ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
695 stmmac_remove_config_dt(pdev, plat_dat);
702 mediatek_dwmac_clks_config(priv_plat, false);
706 static int mediatek_dwmac_remove(struct platform_device *pdev)
708 struct mediatek_dwmac_plat_data *priv_plat = get_stmmac_bsp_priv(&pdev->dev);
711 ret = stmmac_pltfr_remove(pdev);
712 mediatek_dwmac_clks_config(priv_plat, false);
717 static const struct of_device_id mediatek_dwmac_match[] = {
718 { .compatible = "mediatek,mt2712-gmac",
719 .data = &mt2712_gmac_variant },
720 { .compatible = "mediatek,mt8195-gmac",
721 .data = &mt8195_gmac_variant },
725 MODULE_DEVICE_TABLE(of, mediatek_dwmac_match);
727 static struct platform_driver mediatek_dwmac_driver = {
728 .probe = mediatek_dwmac_probe,
729 .remove = mediatek_dwmac_remove,
731 .name = "dwmac-mediatek",
732 .pm = &stmmac_pltfr_pm_ops,
733 .of_match_table = mediatek_dwmac_match,
736 module_platform_driver(mediatek_dwmac_driver);
738 MODULE_AUTHOR("Biao Huang <biao.huang@mediatek.com>");
739 MODULE_DESCRIPTION("MediaTek DWMAC specific glue layer");
740 MODULE_LICENSE("GPL v2");