1 // SPDX-License-Identifier: GPL-2.0+
2 /* Copyright (c) 2017 NXP. */
3
4 #include <linux/bitfield.h>
5 #include <linux/clk.h>
6 #include <linux/delay.h>
7 #include <linux/io.h>
8 #include <linux/module.h>
9 #include <linux/of.h>
10 #include <linux/phy/phy.h>
11 #include <linux/platform_device.h>
12 #include <linux/regulator/consumer.h>
13 #include <linux/usb/typec_mux.h>
14
15 #define PHY_CTRL0 0x0
16 #define PHY_CTRL0_REF_SSP_EN BIT(2)
17 #define PHY_CTRL0_FSEL_MASK GENMASK(10, 5)
18 #define PHY_CTRL0_FSEL_24M 0x2a
19
20 #define PHY_CTRL1 0x4
21 #define PHY_CTRL1_RESET BIT(0)
22 #define PHY_CTRL1_COMMONONN BIT(1)
23 #define PHY_CTRL1_ATERESET BIT(3)
24 #define PHY_CTRL1_VDATSRCENB0 BIT(19)
25 #define PHY_CTRL1_VDATDETENB0 BIT(20)
26
27 #define PHY_CTRL2 0x8
28 #define PHY_CTRL2_TXENABLEN0 BIT(8)
29 #define PHY_CTRL2_OTG_DISABLE BIT(9)
30
31 #define PHY_CTRL3 0xc
32 #define PHY_CTRL3_COMPDISTUNE_MASK GENMASK(2, 0)
33 #define PHY_CTRL3_TXPREEMP_TUNE_MASK GENMASK(16, 15)
34 #define PHY_CTRL3_TXRISE_TUNE_MASK GENMASK(21, 20)
35 #define PHY_CTRL3_TXVREF_TUNE_MASK GENMASK(25, 22)
36 #define PHY_CTRL3_TX_VBOOST_LEVEL_MASK GENMASK(31, 29)
37
38 #define PHY_CTRL4 0x10
39 #define PHY_CTRL4_PCS_TX_DEEMPH_3P5DB_MASK GENMASK(20, 15)
40
41 #define PHY_CTRL5 0x14
42 #define PHY_CTRL5_DMPWD_OVERRIDE_SEL BIT(23)
43 #define PHY_CTRL5_DMPWD_OVERRIDE BIT(22)
44 #define PHY_CTRL5_DPPWD_OVERRIDE_SEL BIT(21)
45 #define PHY_CTRL5_DPPWD_OVERRIDE BIT(20)
46 #define PHY_CTRL5_PCS_TX_SWING_FULL_MASK GENMASK(6, 0)
47
48 #define PHY_CTRL6 0x18
49 #define PHY_CTRL6_ALT_CLK_EN BIT(1)
50 #define PHY_CTRL6_ALT_CLK_SEL BIT(0)
51
52 #define PHY_TUNE_DEFAULT 0xffffffff
53
54 #define TCA_CLK_RST 0x00
55 #define TCA_CLK_RST_SW BIT(9)
56 #define TCA_CLK_RST_REF_CLK_EN BIT(1)
57 #define TCA_CLK_RST_SUSPEND_CLK_EN BIT(0)
58
59 #define TCA_INTR_EN 0x04
60 #define TCA_INTR_STS 0x08
61
62 #define TCA_GCFG 0x10
63 #define TCA_GCFG_ROLE_HSTDEV BIT(4)
64 #define TCA_GCFG_OP_MODE GENMASK(1, 0)
65 #define TCA_GCFG_OP_MODE_SYSMODE 0
66 #define TCA_GCFG_OP_MODE_SYNCMODE 1
67
68 #define TCA_TCPC 0x14
69 #define TCA_TCPC_VALID BIT(4)
70 #define TCA_TCPC_LOW_POWER_EN BIT(3)
71 #define TCA_TCPC_ORIENTATION_NORMAL BIT(2)
72 #define TCA_TCPC_MUX_CONTRL GENMASK(1, 0)
73 #define TCA_TCPC_MUX_CONTRL_NO_CONN 0
74 #define TCA_TCPC_MUX_CONTRL_USB_CONN 1
75
76 #define TCA_SYSMODE_CFG 0x18
77 #define TCA_SYSMODE_TCPC_DISABLE BIT(3)
78 #define TCA_SYSMODE_TCPC_FLIP BIT(2)
79
80 #define TCA_CTRLSYNCMODE_CFG0 0x20
81 #define TCA_CTRLSYNCMODE_CFG1 0x20
82
83 #define TCA_PSTATE 0x30
84 #define TCA_PSTATE_CM_STS BIT(4)
85 #define TCA_PSTATE_TX_STS BIT(3)
86 #define TCA_PSTATE_RX_PLL_STS BIT(2)
87 #define TCA_PSTATE_PIPE0_POWER_DOWN GENMASK(1, 0)
88
89 #define TCA_GEN_STATUS 0x34
90 #define TCA_GEN_DEV_POR BIT(12)
91 #define TCA_GEN_REF_CLK_SEL BIT(8)
92 #define TCA_GEN_TYPEC_FLIP_INVERT BIT(4)
93 #define TCA_GEN_PHY_TYPEC_DISABLE BIT(3)
94 #define TCA_GEN_PHY_TYPEC_FLIP BIT(2)
95
96 #define TCA_VBUS_CTRL 0x40
97 #define TCA_VBUS_STATUS 0x44
98
99 #define TCA_INFO 0xfc
100
101 struct tca_blk {
102 struct typec_switch_dev *sw;
103 void __iomem *base;
104 struct mutex mutex;
105 enum typec_orientation orientation;
106 };
107
108 struct imx8mq_usb_phy {
109 struct phy *phy;
110 struct clk *clk;
111 void __iomem *base;
112 struct regulator *vbus;
113 struct tca_blk *tca;
114 u32 pcs_tx_swing_full;
115 u32 pcs_tx_deemph_3p5db;
116 u32 tx_vref_tune;
117 u32 tx_rise_tune;
118 u32 tx_preemp_amp_tune;
119 u32 tx_vboost_level;
120 u32 comp_dis_tune;
121 };
122
123
124 static void tca_blk_orientation_set(struct tca_blk *tca,
125 enum typec_orientation orientation);
126
127 #ifdef CONFIG_TYPEC
128
tca_blk_typec_switch_set(struct typec_switch_dev * sw,enum typec_orientation orientation)129 static int tca_blk_typec_switch_set(struct typec_switch_dev *sw,
130 enum typec_orientation orientation)
131 {
132 struct imx8mq_usb_phy *imx_phy = typec_switch_get_drvdata(sw);
133 struct tca_blk *tca = imx_phy->tca;
134 int ret;
135
136 if (tca->orientation == orientation)
137 return 0;
138
139 ret = clk_prepare_enable(imx_phy->clk);
140 if (ret)
141 return ret;
142
143 tca_blk_orientation_set(tca, orientation);
144 clk_disable_unprepare(imx_phy->clk);
145
146 return 0;
147 }
148
tca_blk_get_typec_switch(struct platform_device * pdev,struct imx8mq_usb_phy * imx_phy)149 static struct typec_switch_dev *tca_blk_get_typec_switch(struct platform_device *pdev,
150 struct imx8mq_usb_phy *imx_phy)
151 {
152 struct device *dev = &pdev->dev;
153 struct typec_switch_dev *sw;
154 struct typec_switch_desc sw_desc = { };
155
156 sw_desc.drvdata = imx_phy;
157 sw_desc.fwnode = dev->fwnode;
158 sw_desc.set = tca_blk_typec_switch_set;
159 sw_desc.name = NULL;
160
161 sw = typec_switch_register(dev, &sw_desc);
162 if (IS_ERR(sw)) {
163 dev_err(dev, "Error register tca orientation switch: %ld",
164 PTR_ERR(sw));
165 return NULL;
166 }
167
168 return sw;
169 }
170
tca_blk_put_typec_switch(struct typec_switch_dev * sw)171 static void tca_blk_put_typec_switch(struct typec_switch_dev *sw)
172 {
173 typec_switch_unregister(sw);
174 }
175
176 #else
177
tca_blk_get_typec_switch(struct platform_device * pdev,struct imx8mq_usb_phy * imx_phy)178 static struct typec_switch_dev *tca_blk_get_typec_switch(struct platform_device *pdev,
179 struct imx8mq_usb_phy *imx_phy)
180 {
181 return NULL;
182 }
183
tca_blk_put_typec_switch(struct typec_switch_dev * sw)184 static void tca_blk_put_typec_switch(struct typec_switch_dev *sw) {}
185
186 #endif /* CONFIG_TYPEC */
187
tca_blk_orientation_set(struct tca_blk * tca,enum typec_orientation orientation)188 static void tca_blk_orientation_set(struct tca_blk *tca,
189 enum typec_orientation orientation)
190 {
191 u32 val;
192
193 mutex_lock(&tca->mutex);
194
195 if (orientation == TYPEC_ORIENTATION_NONE) {
196 /*
197 * use Controller Synced Mode for TCA low power enable and
198 * put PHY to USB safe state.
199 */
200 val = FIELD_PREP(TCA_GCFG_OP_MODE, TCA_GCFG_OP_MODE_SYNCMODE);
201 writel(val, tca->base + TCA_GCFG);
202
203 val = TCA_TCPC_VALID | TCA_TCPC_LOW_POWER_EN;
204 writel(val, tca->base + TCA_TCPC);
205
206 goto out;
207 }
208
209 /* use System Configuration Mode for TCA mux control. */
210 val = FIELD_PREP(TCA_GCFG_OP_MODE, TCA_GCFG_OP_MODE_SYSMODE);
211 writel(val, tca->base + TCA_GCFG);
212
213 /* Disable TCA module */
214 val = readl(tca->base + TCA_SYSMODE_CFG);
215 val |= TCA_SYSMODE_TCPC_DISABLE;
216 writel(val, tca->base + TCA_SYSMODE_CFG);
217
218 if (orientation == TYPEC_ORIENTATION_REVERSE)
219 val |= TCA_SYSMODE_TCPC_FLIP;
220 else if (orientation == TYPEC_ORIENTATION_NORMAL)
221 val &= ~TCA_SYSMODE_TCPC_FLIP;
222
223 writel(val, tca->base + TCA_SYSMODE_CFG);
224
225 /* Enable TCA module */
226 val &= ~TCA_SYSMODE_TCPC_DISABLE;
227 writel(val, tca->base + TCA_SYSMODE_CFG);
228
229 out:
230 tca->orientation = orientation;
231 mutex_unlock(&tca->mutex);
232 }
233
tca_blk_init(struct tca_blk * tca)234 static void tca_blk_init(struct tca_blk *tca)
235 {
236 u32 val;
237
238 /* reset XBar block */
239 val = readl(tca->base + TCA_CLK_RST);
240 val &= ~TCA_CLK_RST_SW;
241 writel(val, tca->base + TCA_CLK_RST);
242
243 udelay(100);
244
245 /* clear reset */
246 val |= TCA_CLK_RST_SW;
247 writel(val, tca->base + TCA_CLK_RST);
248
249 tca_blk_orientation_set(tca, tca->orientation);
250 }
251
imx95_usb_phy_get_tca(struct platform_device * pdev,struct imx8mq_usb_phy * imx_phy)252 static struct tca_blk *imx95_usb_phy_get_tca(struct platform_device *pdev,
253 struct imx8mq_usb_phy *imx_phy)
254 {
255 struct device *dev = &pdev->dev;
256 struct resource *res;
257 struct tca_blk *tca;
258
259 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
260 if (!res)
261 return NULL;
262
263 tca = devm_kzalloc(dev, sizeof(*tca), GFP_KERNEL);
264 if (!tca)
265 return ERR_PTR(-ENOMEM);
266
267 tca->base = devm_ioremap_resource(&pdev->dev, res);
268 if (IS_ERR(tca->base))
269 return ERR_CAST(tca->base);
270
271 mutex_init(&tca->mutex);
272
273 tca->orientation = TYPEC_ORIENTATION_NORMAL;
274 tca->sw = tca_blk_get_typec_switch(pdev, imx_phy);
275
276 return tca;
277 }
278
imx95_usb_phy_put_tca(struct imx8mq_usb_phy * imx_phy)279 static void imx95_usb_phy_put_tca(struct imx8mq_usb_phy *imx_phy)
280 {
281 struct tca_blk *tca = imx_phy->tca;
282
283 if (!tca)
284 return;
285
286 tca_blk_put_typec_switch(tca->sw);
287 }
288
phy_tx_vref_tune_from_property(u32 percent)289 static u32 phy_tx_vref_tune_from_property(u32 percent)
290 {
291 percent = clamp(percent, 94U, 124U);
292
293 return DIV_ROUND_CLOSEST(percent - 94U, 2);
294 }
295
phy_tx_rise_tune_from_property(u32 percent)296 static u32 phy_tx_rise_tune_from_property(u32 percent)
297 {
298 switch (percent) {
299 case 0 ... 98:
300 return 3;
301 case 99:
302 return 2;
303 case 100 ... 101:
304 return 1;
305 default:
306 return 0;
307 }
308 }
309
phy_tx_preemp_amp_tune_from_property(u32 microamp)310 static u32 phy_tx_preemp_amp_tune_from_property(u32 microamp)
311 {
312 microamp = min(microamp, 1800U);
313
314 return microamp / 600;
315 }
316
phy_tx_vboost_level_from_property(u32 microvolt)317 static u32 phy_tx_vboost_level_from_property(u32 microvolt)
318 {
319 switch (microvolt) {
320 case 0 ... 960:
321 return 0;
322 case 961 ... 1160:
323 return 2;
324 default:
325 return 3;
326 }
327 }
328
phy_pcs_tx_deemph_3p5db_from_property(u32 decibel)329 static u32 phy_pcs_tx_deemph_3p5db_from_property(u32 decibel)
330 {
331 return min(decibel, 36U);
332 }
333
phy_comp_dis_tune_from_property(u32 percent)334 static u32 phy_comp_dis_tune_from_property(u32 percent)
335 {
336 switch (percent) {
337 case 0 ... 92:
338 return 0;
339 case 93 ... 95:
340 return 1;
341 case 96 ... 97:
342 return 2;
343 case 98 ... 102:
344 return 3;
345 case 103 ... 105:
346 return 4;
347 case 106 ... 109:
348 return 5;
349 case 110 ... 113:
350 return 6;
351 default:
352 return 7;
353 }
354 }
phy_pcs_tx_swing_full_from_property(u32 percent)355 static u32 phy_pcs_tx_swing_full_from_property(u32 percent)
356 {
357 percent = min(percent, 100U);
358
359 return (percent * 127) / 100;
360 }
361
imx8m_get_phy_tuning_data(struct imx8mq_usb_phy * imx_phy)362 static void imx8m_get_phy_tuning_data(struct imx8mq_usb_phy *imx_phy)
363 {
364 struct device *dev = imx_phy->phy->dev.parent;
365
366 if (device_property_read_u32(dev, "fsl,phy-tx-vref-tune-percent",
367 &imx_phy->tx_vref_tune))
368 imx_phy->tx_vref_tune = PHY_TUNE_DEFAULT;
369 else
370 imx_phy->tx_vref_tune =
371 phy_tx_vref_tune_from_property(imx_phy->tx_vref_tune);
372
373 if (device_property_read_u32(dev, "fsl,phy-tx-rise-tune-percent",
374 &imx_phy->tx_rise_tune))
375 imx_phy->tx_rise_tune = PHY_TUNE_DEFAULT;
376 else
377 imx_phy->tx_rise_tune =
378 phy_tx_rise_tune_from_property(imx_phy->tx_rise_tune);
379
380 if (device_property_read_u32(dev, "fsl,phy-tx-preemp-amp-tune-microamp",
381 &imx_phy->tx_preemp_amp_tune))
382 imx_phy->tx_preemp_amp_tune = PHY_TUNE_DEFAULT;
383 else
384 imx_phy->tx_preemp_amp_tune =
385 phy_tx_preemp_amp_tune_from_property(imx_phy->tx_preemp_amp_tune);
386
387 if (device_property_read_u32(dev, "fsl,phy-tx-vboost-level-microvolt",
388 &imx_phy->tx_vboost_level))
389 imx_phy->tx_vboost_level = PHY_TUNE_DEFAULT;
390 else
391 imx_phy->tx_vboost_level =
392 phy_tx_vboost_level_from_property(imx_phy->tx_vboost_level);
393
394 if (device_property_read_u32(dev, "fsl,phy-comp-dis-tune-percent",
395 &imx_phy->comp_dis_tune))
396 imx_phy->comp_dis_tune = PHY_TUNE_DEFAULT;
397 else
398 imx_phy->comp_dis_tune =
399 phy_comp_dis_tune_from_property(imx_phy->comp_dis_tune);
400
401 if (device_property_read_u32(dev, "fsl,phy-pcs-tx-deemph-3p5db-attenuation-db",
402 &imx_phy->pcs_tx_deemph_3p5db))
403 imx_phy->pcs_tx_deemph_3p5db = PHY_TUNE_DEFAULT;
404 else
405 imx_phy->pcs_tx_deemph_3p5db =
406 phy_pcs_tx_deemph_3p5db_from_property(imx_phy->pcs_tx_deemph_3p5db);
407
408 if (device_property_read_u32(dev, "fsl,phy-pcs-tx-swing-full-percent",
409 &imx_phy->pcs_tx_swing_full))
410 imx_phy->pcs_tx_swing_full = PHY_TUNE_DEFAULT;
411 else
412 imx_phy->pcs_tx_swing_full =
413 phy_pcs_tx_swing_full_from_property(imx_phy->pcs_tx_swing_full);
414 }
415
imx8m_phy_tune(struct imx8mq_usb_phy * imx_phy)416 static void imx8m_phy_tune(struct imx8mq_usb_phy *imx_phy)
417 {
418 u32 value;
419
420 /* PHY tuning */
421 if (imx_phy->pcs_tx_deemph_3p5db != PHY_TUNE_DEFAULT) {
422 value = readl(imx_phy->base + PHY_CTRL4);
423 value &= ~PHY_CTRL4_PCS_TX_DEEMPH_3P5DB_MASK;
424 value |= FIELD_PREP(PHY_CTRL4_PCS_TX_DEEMPH_3P5DB_MASK,
425 imx_phy->pcs_tx_deemph_3p5db);
426 writel(value, imx_phy->base + PHY_CTRL4);
427 }
428
429 if (imx_phy->pcs_tx_swing_full != PHY_TUNE_DEFAULT) {
430 value = readl(imx_phy->base + PHY_CTRL5);
431 value |= FIELD_PREP(PHY_CTRL5_PCS_TX_SWING_FULL_MASK,
432 imx_phy->pcs_tx_swing_full);
433 writel(value, imx_phy->base + PHY_CTRL5);
434 }
435
436 if ((imx_phy->tx_vref_tune & imx_phy->tx_rise_tune &
437 imx_phy->tx_preemp_amp_tune & imx_phy->comp_dis_tune &
438 imx_phy->tx_vboost_level) == PHY_TUNE_DEFAULT)
439 /* If all are the default values, no need update. */
440 return;
441
442 value = readl(imx_phy->base + PHY_CTRL3);
443
444 if (imx_phy->tx_vref_tune != PHY_TUNE_DEFAULT) {
445 value &= ~PHY_CTRL3_TXVREF_TUNE_MASK;
446 value |= FIELD_PREP(PHY_CTRL3_TXVREF_TUNE_MASK,
447 imx_phy->tx_vref_tune);
448 }
449
450 if (imx_phy->tx_rise_tune != PHY_TUNE_DEFAULT) {
451 value &= ~PHY_CTRL3_TXRISE_TUNE_MASK;
452 value |= FIELD_PREP(PHY_CTRL3_TXRISE_TUNE_MASK,
453 imx_phy->tx_rise_tune);
454 }
455
456 if (imx_phy->tx_preemp_amp_tune != PHY_TUNE_DEFAULT) {
457 value &= ~PHY_CTRL3_TXPREEMP_TUNE_MASK;
458 value |= FIELD_PREP(PHY_CTRL3_TXPREEMP_TUNE_MASK,
459 imx_phy->tx_preemp_amp_tune);
460 }
461
462 if (imx_phy->comp_dis_tune != PHY_TUNE_DEFAULT) {
463 value &= ~PHY_CTRL3_COMPDISTUNE_MASK;
464 value |= FIELD_PREP(PHY_CTRL3_COMPDISTUNE_MASK,
465 imx_phy->comp_dis_tune);
466 }
467
468 if (imx_phy->tx_vboost_level != PHY_TUNE_DEFAULT) {
469 value &= ~PHY_CTRL3_TX_VBOOST_LEVEL_MASK;
470 value |= FIELD_PREP(PHY_CTRL3_TX_VBOOST_LEVEL_MASK,
471 imx_phy->tx_vboost_level);
472 }
473
474 writel(value, imx_phy->base + PHY_CTRL3);
475 }
476
imx8mq_usb_phy_init(struct phy * phy)477 static int imx8mq_usb_phy_init(struct phy *phy)
478 {
479 struct imx8mq_usb_phy *imx_phy = phy_get_drvdata(phy);
480 u32 value;
481
482 value = readl(imx_phy->base + PHY_CTRL1);
483 value &= ~(PHY_CTRL1_VDATSRCENB0 | PHY_CTRL1_VDATDETENB0 |
484 PHY_CTRL1_COMMONONN);
485 value |= PHY_CTRL1_RESET | PHY_CTRL1_ATERESET;
486 writel(value, imx_phy->base + PHY_CTRL1);
487
488 value = readl(imx_phy->base + PHY_CTRL0);
489 value |= PHY_CTRL0_REF_SSP_EN;
490 writel(value, imx_phy->base + PHY_CTRL0);
491
492 value = readl(imx_phy->base + PHY_CTRL2);
493 value |= PHY_CTRL2_TXENABLEN0;
494 writel(value, imx_phy->base + PHY_CTRL2);
495
496 value = readl(imx_phy->base + PHY_CTRL1);
497 value &= ~(PHY_CTRL1_RESET | PHY_CTRL1_ATERESET);
498 writel(value, imx_phy->base + PHY_CTRL1);
499
500 return 0;
501 }
502
imx8mp_usb_phy_init(struct phy * phy)503 static int imx8mp_usb_phy_init(struct phy *phy)
504 {
505 struct imx8mq_usb_phy *imx_phy = phy_get_drvdata(phy);
506 u32 value;
507
508 /* USB3.0 PHY signal fsel for 24M ref */
509 value = readl(imx_phy->base + PHY_CTRL0);
510 value &= ~PHY_CTRL0_FSEL_MASK;
511 value |= FIELD_PREP(PHY_CTRL0_FSEL_MASK, PHY_CTRL0_FSEL_24M);
512 writel(value, imx_phy->base + PHY_CTRL0);
513
514 /* Disable alt_clk_en and use internal MPLL clocks */
515 value = readl(imx_phy->base + PHY_CTRL6);
516 value &= ~(PHY_CTRL6_ALT_CLK_SEL | PHY_CTRL6_ALT_CLK_EN);
517 writel(value, imx_phy->base + PHY_CTRL6);
518
519 value = readl(imx_phy->base + PHY_CTRL1);
520 value &= ~(PHY_CTRL1_VDATSRCENB0 | PHY_CTRL1_VDATDETENB0);
521 value |= PHY_CTRL1_RESET | PHY_CTRL1_ATERESET;
522 writel(value, imx_phy->base + PHY_CTRL1);
523
524 value = readl(imx_phy->base + PHY_CTRL0);
525 value |= PHY_CTRL0_REF_SSP_EN;
526 writel(value, imx_phy->base + PHY_CTRL0);
527
528 value = readl(imx_phy->base + PHY_CTRL2);
529 value |= PHY_CTRL2_TXENABLEN0 | PHY_CTRL2_OTG_DISABLE;
530 writel(value, imx_phy->base + PHY_CTRL2);
531
532 udelay(10);
533
534 value = readl(imx_phy->base + PHY_CTRL1);
535 value &= ~(PHY_CTRL1_RESET | PHY_CTRL1_ATERESET);
536 writel(value, imx_phy->base + PHY_CTRL1);
537
538 imx8m_phy_tune(imx_phy);
539
540 if (imx_phy->tca)
541 tca_blk_init(imx_phy->tca);
542
543 return 0;
544 }
545
imx8mq_phy_power_on(struct phy * phy)546 static int imx8mq_phy_power_on(struct phy *phy)
547 {
548 struct imx8mq_usb_phy *imx_phy = phy_get_drvdata(phy);
549 int ret;
550
551 ret = regulator_enable(imx_phy->vbus);
552 if (ret)
553 return ret;
554
555 return clk_prepare_enable(imx_phy->clk);
556 }
557
imx8mq_phy_power_off(struct phy * phy)558 static int imx8mq_phy_power_off(struct phy *phy)
559 {
560 struct imx8mq_usb_phy *imx_phy = phy_get_drvdata(phy);
561
562 clk_disable_unprepare(imx_phy->clk);
563 regulator_disable(imx_phy->vbus);
564
565 return 0;
566 }
567
568 static const struct phy_ops imx8mq_usb_phy_ops = {
569 .init = imx8mq_usb_phy_init,
570 .power_on = imx8mq_phy_power_on,
571 .power_off = imx8mq_phy_power_off,
572 .owner = THIS_MODULE,
573 };
574
575 static const struct phy_ops imx8mp_usb_phy_ops = {
576 .init = imx8mp_usb_phy_init,
577 .power_on = imx8mq_phy_power_on,
578 .power_off = imx8mq_phy_power_off,
579 .owner = THIS_MODULE,
580 };
581
582 static const struct of_device_id imx8mq_usb_phy_of_match[] = {
583 {.compatible = "fsl,imx8mq-usb-phy",
584 .data = &imx8mq_usb_phy_ops,},
585 {.compatible = "fsl,imx8mp-usb-phy",
586 .data = &imx8mp_usb_phy_ops,},
587 {.compatible = "fsl,imx95-usb-phy",
588 .data = &imx8mp_usb_phy_ops,},
589 { }
590 };
591 MODULE_DEVICE_TABLE(of, imx8mq_usb_phy_of_match);
592
imx8mq_usb_phy_probe(struct platform_device * pdev)593 static int imx8mq_usb_phy_probe(struct platform_device *pdev)
594 {
595 struct phy_provider *phy_provider;
596 struct device *dev = &pdev->dev;
597 struct imx8mq_usb_phy *imx_phy;
598 const struct phy_ops *phy_ops;
599
600 imx_phy = devm_kzalloc(dev, sizeof(*imx_phy), GFP_KERNEL);
601 if (!imx_phy)
602 return -ENOMEM;
603
604 imx_phy->clk = devm_clk_get(dev, "phy");
605 if (IS_ERR(imx_phy->clk)) {
606 dev_err(dev, "failed to get imx8mq usb phy clock\n");
607 return PTR_ERR(imx_phy->clk);
608 }
609
610 imx_phy->base = devm_platform_ioremap_resource(pdev, 0);
611 if (IS_ERR(imx_phy->base))
612 return PTR_ERR(imx_phy->base);
613
614 phy_ops = of_device_get_match_data(dev);
615 if (!phy_ops)
616 return -EINVAL;
617
618 imx_phy->phy = devm_phy_create(dev, NULL, phy_ops);
619 if (IS_ERR(imx_phy->phy))
620 return PTR_ERR(imx_phy->phy);
621
622 imx_phy->vbus = devm_regulator_get(dev, "vbus");
623 if (IS_ERR(imx_phy->vbus))
624 return dev_err_probe(dev, PTR_ERR(imx_phy->vbus), "failed to get vbus\n");
625
626 phy_set_drvdata(imx_phy->phy, imx_phy);
627
628 imx_phy->tca = imx95_usb_phy_get_tca(pdev, imx_phy);
629 if (IS_ERR(imx_phy->tca))
630 return dev_err_probe(dev, PTR_ERR(imx_phy->tca),
631 "failed to get tca\n");
632
633 imx8m_get_phy_tuning_data(imx_phy);
634
635 phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
636
637 return PTR_ERR_OR_ZERO(phy_provider);
638 }
639
imx8mq_usb_phy_remove(struct platform_device * pdev)640 static void imx8mq_usb_phy_remove(struct platform_device *pdev)
641 {
642 struct imx8mq_usb_phy *imx_phy = platform_get_drvdata(pdev);
643
644 imx95_usb_phy_put_tca(imx_phy);
645 }
646
647 static struct platform_driver imx8mq_usb_phy_driver = {
648 .probe = imx8mq_usb_phy_probe,
649 .remove = imx8mq_usb_phy_remove,
650 .driver = {
651 .name = "imx8mq-usb-phy",
652 .of_match_table = imx8mq_usb_phy_of_match,
653 }
654 };
655 module_platform_driver(imx8mq_usb_phy_driver);
656
657 MODULE_DESCRIPTION("FSL IMX8MQ USB PHY driver");
658 MODULE_LICENSE("GPL");
659