1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Wrapper driver for SERDES used in J721E
4 *
5 * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com/
6 * Author: Kishon Vijay Abraham I <kishon@ti.com>
7 */
8
9 #include <dt-bindings/phy/phy.h>
10 #include <dt-bindings/phy/phy-ti.h>
11 #include <linux/slab.h>
12 #include <linux/clk.h>
13 #include <linux/clk-provider.h>
14 #include <linux/gpio.h>
15 #include <linux/gpio/consumer.h>
16 #include <linux/io.h>
17 #include <linux/module.h>
18 #include <linux/mfd/syscon.h>
19 #include <linux/mux/consumer.h>
20 #include <linux/of_address.h>
21 #include <linux/of_platform.h>
22 #include <linux/platform_device.h>
23 #include <linux/pm_runtime.h>
24 #include <linux/regmap.h>
25 #include <linux/reset-controller.h>
26
27 #define REF_CLK_19_2MHZ 19200000
28 #define REF_CLK_25MHZ 25000000
29 #define REF_CLK_100MHZ 100000000
30 #define REF_CLK_156_25MHZ 156250000
31
32 /* SCM offsets */
33 #define SERDES_SUP_CTRL 0x4400
34
35 /* SERDES offsets */
36 #define WIZ_SERDES_CTRL 0x404
37 #define WIZ_SERDES_TOP_CTRL 0x408
38 #define WIZ_SERDES_RST 0x40c
39 #define WIZ_SERDES_TYPEC 0x410
40 #define WIZ_LANECTL(n) (0x480 + (0x40 * (n)))
41 #define WIZ_LANEDIV(n) (0x484 + (0x40 * (n)))
42
43 #define WIZ_MAX_INPUT_CLOCKS 4
44 /* To include mux clocks, divider clocks and gate clocks */
45 #define WIZ_MAX_OUTPUT_CLOCKS 32
46
47 #define WIZ_MAX_LANES 4
48 #define WIZ_MUX_NUM_CLOCKS 3
49 #define WIZ_DIV_NUM_CLOCKS_16G 2
50 #define WIZ_DIV_NUM_CLOCKS_10G 1
51
52 #define WIZ_SERDES_TYPEC_LN10_SWAP BIT(30)
53
54 enum wiz_lane_standard_mode {
55 LANE_MODE_GEN1,
56 LANE_MODE_GEN2,
57 LANE_MODE_GEN3,
58 LANE_MODE_GEN4,
59 };
60
61 /*
62 * List of master lanes used for lane swapping
63 */
64 enum wiz_typec_master_lane {
65 LANE0 = 0,
66 LANE2 = 2,
67 };
68
69 enum wiz_refclk_mux_sel {
70 PLL0_REFCLK,
71 PLL1_REFCLK,
72 REFCLK_DIG,
73 };
74
75 enum wiz_refclk_div_sel {
76 CMN_REFCLK_DIG_DIV,
77 CMN_REFCLK1_DIG_DIV,
78 };
79
80 enum wiz_clock_input {
81 WIZ_CORE_REFCLK,
82 WIZ_EXT_REFCLK,
83 WIZ_CORE_REFCLK1,
84 WIZ_EXT_REFCLK1,
85 };
86
87 static const struct reg_field por_en = REG_FIELD(WIZ_SERDES_CTRL, 31, 31);
88 static const struct reg_field phy_reset_n = REG_FIELD(WIZ_SERDES_RST, 31, 31);
89 static const struct reg_field phy_en_refclk = REG_FIELD(WIZ_SERDES_RST, 30, 30);
90 static const struct reg_field pll1_refclk_mux_sel =
91 REG_FIELD(WIZ_SERDES_RST, 29, 29);
92 static const struct reg_field pll1_refclk_mux_sel_2 =
93 REG_FIELD(WIZ_SERDES_RST, 22, 23);
94 static const struct reg_field pll0_refclk_mux_sel =
95 REG_FIELD(WIZ_SERDES_RST, 28, 28);
96 static const struct reg_field pll0_refclk_mux_sel_2 =
97 REG_FIELD(WIZ_SERDES_RST, 28, 29);
98 static const struct reg_field refclk_dig_sel_16g =
99 REG_FIELD(WIZ_SERDES_RST, 24, 25);
100 static const struct reg_field refclk_dig_sel_10g =
101 REG_FIELD(WIZ_SERDES_RST, 24, 24);
102 static const struct reg_field pma_cmn_refclk_int_mode =
103 REG_FIELD(WIZ_SERDES_TOP_CTRL, 28, 29);
104 static const struct reg_field pma_cmn_refclk1_int_mode =
105 REG_FIELD(WIZ_SERDES_TOP_CTRL, 20, 21);
106 static const struct reg_field pma_cmn_refclk_mode =
107 REG_FIELD(WIZ_SERDES_TOP_CTRL, 30, 31);
108 static const struct reg_field pma_cmn_refclk_dig_div =
109 REG_FIELD(WIZ_SERDES_TOP_CTRL, 26, 27);
110 static const struct reg_field pma_cmn_refclk1_dig_div =
111 REG_FIELD(WIZ_SERDES_TOP_CTRL, 24, 25);
112
113 static const struct reg_field sup_pll0_refclk_mux_sel =
114 REG_FIELD(SERDES_SUP_CTRL, 0, 1);
115 static const struct reg_field sup_pll1_refclk_mux_sel =
116 REG_FIELD(SERDES_SUP_CTRL, 2, 3);
117 static const struct reg_field sup_pma_cmn_refclk1_int_mode =
118 REG_FIELD(SERDES_SUP_CTRL, 4, 5);
119 static const struct reg_field sup_refclk_dig_sel_10g =
120 REG_FIELD(SERDES_SUP_CTRL, 6, 7);
121 static const struct reg_field sup_legacy_clk_override =
122 REG_FIELD(SERDES_SUP_CTRL, 8, 8);
123
124 static const char * const output_clk_names[] = {
125 [TI_WIZ_PLL0_REFCLK] = "pll0-refclk",
126 [TI_WIZ_PLL1_REFCLK] = "pll1-refclk",
127 [TI_WIZ_REFCLK_DIG] = "refclk-dig",
128 [TI_WIZ_PHY_EN_REFCLK] = "phy-en-refclk",
129 };
130
131 static const struct reg_field p_enable[WIZ_MAX_LANES] = {
132 REG_FIELD(WIZ_LANECTL(0), 30, 31),
133 REG_FIELD(WIZ_LANECTL(1), 30, 31),
134 REG_FIELD(WIZ_LANECTL(2), 30, 31),
135 REG_FIELD(WIZ_LANECTL(3), 30, 31),
136 };
137
138 enum p_enable { P_ENABLE = 2, P_ENABLE_FORCE = 1, P_ENABLE_DISABLE = 0 };
139
140 static const struct reg_field p_align[WIZ_MAX_LANES] = {
141 REG_FIELD(WIZ_LANECTL(0), 29, 29),
142 REG_FIELD(WIZ_LANECTL(1), 29, 29),
143 REG_FIELD(WIZ_LANECTL(2), 29, 29),
144 REG_FIELD(WIZ_LANECTL(3), 29, 29),
145 };
146
147 static const struct reg_field p_raw_auto_start[WIZ_MAX_LANES] = {
148 REG_FIELD(WIZ_LANECTL(0), 28, 28),
149 REG_FIELD(WIZ_LANECTL(1), 28, 28),
150 REG_FIELD(WIZ_LANECTL(2), 28, 28),
151 REG_FIELD(WIZ_LANECTL(3), 28, 28),
152 };
153
154 static const struct reg_field p_standard_mode[WIZ_MAX_LANES] = {
155 REG_FIELD(WIZ_LANECTL(0), 24, 25),
156 REG_FIELD(WIZ_LANECTL(1), 24, 25),
157 REG_FIELD(WIZ_LANECTL(2), 24, 25),
158 REG_FIELD(WIZ_LANECTL(3), 24, 25),
159 };
160
161 static const struct reg_field p0_fullrt_div[WIZ_MAX_LANES] = {
162 REG_FIELD(WIZ_LANECTL(0), 22, 23),
163 REG_FIELD(WIZ_LANECTL(1), 22, 23),
164 REG_FIELD(WIZ_LANECTL(2), 22, 23),
165 REG_FIELD(WIZ_LANECTL(3), 22, 23),
166 };
167
168 static const struct reg_field p0_mac_src_sel[WIZ_MAX_LANES] = {
169 REG_FIELD(WIZ_LANECTL(0), 20, 21),
170 REG_FIELD(WIZ_LANECTL(1), 20, 21),
171 REG_FIELD(WIZ_LANECTL(2), 20, 21),
172 REG_FIELD(WIZ_LANECTL(3), 20, 21),
173 };
174
175 static const struct reg_field p0_rxfclk_sel[WIZ_MAX_LANES] = {
176 REG_FIELD(WIZ_LANECTL(0), 6, 7),
177 REG_FIELD(WIZ_LANECTL(1), 6, 7),
178 REG_FIELD(WIZ_LANECTL(2), 6, 7),
179 REG_FIELD(WIZ_LANECTL(3), 6, 7),
180 };
181
182 static const struct reg_field p0_refclk_sel[WIZ_MAX_LANES] = {
183 REG_FIELD(WIZ_LANECTL(0), 18, 19),
184 REG_FIELD(WIZ_LANECTL(1), 18, 19),
185 REG_FIELD(WIZ_LANECTL(2), 18, 19),
186 REG_FIELD(WIZ_LANECTL(3), 18, 19),
187 };
188 static const struct reg_field p_mac_div_sel0[WIZ_MAX_LANES] = {
189 REG_FIELD(WIZ_LANEDIV(0), 16, 22),
190 REG_FIELD(WIZ_LANEDIV(1), 16, 22),
191 REG_FIELD(WIZ_LANEDIV(2), 16, 22),
192 REG_FIELD(WIZ_LANEDIV(3), 16, 22),
193 };
194
195 static const struct reg_field p_mac_div_sel1[WIZ_MAX_LANES] = {
196 REG_FIELD(WIZ_LANEDIV(0), 0, 8),
197 REG_FIELD(WIZ_LANEDIV(1), 0, 8),
198 REG_FIELD(WIZ_LANEDIV(2), 0, 8),
199 REG_FIELD(WIZ_LANEDIV(3), 0, 8),
200 };
201
202 static const struct reg_field typec_ln10_swap =
203 REG_FIELD(WIZ_SERDES_TYPEC, 30, 30);
204
205 static const struct reg_field typec_ln23_swap =
206 REG_FIELD(WIZ_SERDES_TYPEC, 31, 31);
207
208 struct wiz_clk_mux {
209 struct clk_hw hw;
210 struct regmap_field *field;
211 const u32 *table;
212 struct clk_init_data clk_data;
213 };
214
215 #define to_wiz_clk_mux(_hw) container_of(_hw, struct wiz_clk_mux, hw)
216
217 struct wiz_clk_divider {
218 struct clk_hw hw;
219 struct regmap_field *field;
220 const struct clk_div_table *table;
221 struct clk_init_data clk_data;
222 };
223
224 #define to_wiz_clk_div(_hw) container_of(_hw, struct wiz_clk_divider, hw)
225
226 struct wiz_clk_mux_sel {
227 u32 table[WIZ_MAX_INPUT_CLOCKS];
228 const char *node_name;
229 u32 num_parents;
230 u32 parents[WIZ_MAX_INPUT_CLOCKS];
231 };
232
233 struct wiz_clk_div_sel {
234 const struct clk_div_table *table;
235 const char *node_name;
236 };
237
238 struct wiz_phy_en_refclk {
239 struct clk_hw hw;
240 struct regmap_field *phy_en_refclk;
241 struct clk_init_data clk_data;
242 };
243
244 #define to_wiz_phy_en_refclk(_hw) container_of(_hw, struct wiz_phy_en_refclk, hw)
245
246 static const struct wiz_clk_mux_sel clk_mux_sel_16g[] = {
247 {
248 /*
249 * Mux value to be configured for each of the input clocks
250 * in the order populated in device tree
251 */
252 .table = { 1, 0 },
253 .node_name = "pll0-refclk",
254 },
255 {
256 .table = { 1, 0 },
257 .node_name = "pll1-refclk",
258 },
259 {
260 .table = { 1, 3, 0, 2 },
261 .node_name = "refclk-dig",
262 },
263 };
264
265 static const struct wiz_clk_mux_sel clk_mux_sel_10g[] = {
266 {
267 /*
268 * Mux value to be configured for each of the input clocks
269 * in the order populated in device tree
270 */
271 .num_parents = 2,
272 .parents = { WIZ_CORE_REFCLK, WIZ_EXT_REFCLK },
273 .table = { 1, 0 },
274 .node_name = "pll0-refclk",
275 },
276 {
277 .num_parents = 2,
278 .parents = { WIZ_CORE_REFCLK, WIZ_EXT_REFCLK },
279 .table = { 1, 0 },
280 .node_name = "pll1-refclk",
281 },
282 {
283 .num_parents = 2,
284 .parents = { WIZ_CORE_REFCLK, WIZ_EXT_REFCLK },
285 .table = { 1, 0 },
286 .node_name = "refclk-dig",
287 },
288 };
289
290 static const struct wiz_clk_mux_sel clk_mux_sel_10g_2_refclk[] = {
291 {
292 .num_parents = 3,
293 .parents = { WIZ_CORE_REFCLK, WIZ_CORE_REFCLK1, WIZ_EXT_REFCLK },
294 .table = { 2, 3, 0 },
295 .node_name = "pll0-refclk",
296 },
297 {
298 .num_parents = 3,
299 .parents = { WIZ_CORE_REFCLK, WIZ_CORE_REFCLK1, WIZ_EXT_REFCLK },
300 .table = { 2, 3, 0 },
301 .node_name = "pll1-refclk",
302 },
303 {
304 .num_parents = 3,
305 .parents = { WIZ_CORE_REFCLK, WIZ_CORE_REFCLK1, WIZ_EXT_REFCLK },
306 .table = { 2, 3, 0 },
307 .node_name = "refclk-dig",
308 },
309 };
310
311 static const struct clk_div_table clk_div_table[] = {
312 { .val = 0, .div = 1, },
313 { .val = 1, .div = 2, },
314 { .val = 2, .div = 4, },
315 { .val = 3, .div = 8, },
316 { /* sentinel */ },
317 };
318
319 static const struct wiz_clk_div_sel clk_div_sel[] = {
320 {
321 .table = clk_div_table,
322 .node_name = "cmn-refclk-dig-div",
323 },
324 {
325 .table = clk_div_table,
326 .node_name = "cmn-refclk1-dig-div",
327 },
328 };
329
330 enum wiz_type {
331 J721E_WIZ_16G,
332 J721E_WIZ_10G, /* Also for J7200 SR1.0 */
333 AM64_WIZ_10G,
334 J7200_WIZ_10G, /* J7200 SR2.0 */
335 J784S4_WIZ_10G,
336 J721S2_WIZ_10G,
337 };
338
339 struct wiz_data {
340 enum wiz_type type;
341 const struct reg_field *pll0_refclk_mux_sel;
342 const struct reg_field *pll1_refclk_mux_sel;
343 const struct reg_field *refclk_dig_sel;
344 const struct reg_field *pma_cmn_refclk1_dig_div;
345 const struct reg_field *pma_cmn_refclk1_int_mode;
346 const struct wiz_clk_mux_sel *clk_mux_sel;
347 unsigned int clk_div_sel_num;
348 };
349
350 #define WIZ_TYPEC_DIR_DEBOUNCE_MIN 100 /* ms */
351 #define WIZ_TYPEC_DIR_DEBOUNCE_MAX 1000
352
353 struct wiz {
354 struct regmap *regmap;
355 struct regmap *scm_regmap;
356 enum wiz_type type;
357 const struct wiz_clk_mux_sel *clk_mux_sel;
358 const struct wiz_clk_div_sel *clk_div_sel;
359 unsigned int clk_div_sel_num;
360 struct regmap_field *por_en;
361 struct regmap_field *phy_reset_n;
362 struct regmap_field *phy_en_refclk;
363 struct regmap_field *p_enable[WIZ_MAX_LANES];
364 struct regmap_field *p_align[WIZ_MAX_LANES];
365 struct regmap_field *p_raw_auto_start[WIZ_MAX_LANES];
366 struct regmap_field *p_standard_mode[WIZ_MAX_LANES];
367 struct regmap_field *p_mac_div_sel0[WIZ_MAX_LANES];
368 struct regmap_field *p_mac_div_sel1[WIZ_MAX_LANES];
369 struct regmap_field *p0_fullrt_div[WIZ_MAX_LANES];
370 struct regmap_field *p0_mac_src_sel[WIZ_MAX_LANES];
371 struct regmap_field *p0_rxfclk_sel[WIZ_MAX_LANES];
372 struct regmap_field *p0_refclk_sel[WIZ_MAX_LANES];
373 struct regmap_field *pma_cmn_refclk_int_mode;
374 struct regmap_field *pma_cmn_refclk1_int_mode;
375 struct regmap_field *pma_cmn_refclk_mode;
376 struct regmap_field *pma_cmn_refclk_dig_div;
377 struct regmap_field *pma_cmn_refclk1_dig_div;
378 struct regmap_field *mux_sel_field[WIZ_MUX_NUM_CLOCKS];
379 struct regmap_field *div_sel_field[WIZ_DIV_NUM_CLOCKS_16G];
380 struct regmap_field *typec_ln10_swap;
381 struct regmap_field *typec_ln23_swap;
382 struct regmap_field *sup_legacy_clk_override;
383
384 struct device *dev;
385 u32 num_lanes;
386 struct platform_device *serdes_pdev;
387 struct reset_controller_dev wiz_phy_reset_dev;
388 struct gpio_desc *gpio_typec_dir;
389 int typec_dir_delay;
390 u32 lane_phy_type[WIZ_MAX_LANES];
391 u32 master_lane_num[WIZ_MAX_LANES];
392 struct clk *input_clks[WIZ_MAX_INPUT_CLOCKS];
393 struct clk *output_clks[WIZ_MAX_OUTPUT_CLOCKS];
394 struct clk_onecell_data clk_data;
395 const struct wiz_data *data;
396 };
397
wiz_reset(struct wiz * wiz)398 static int wiz_reset(struct wiz *wiz)
399 {
400 int ret;
401
402 ret = regmap_field_write(wiz->por_en, 0x1);
403 if (ret)
404 return ret;
405
406 mdelay(1);
407
408 ret = regmap_field_write(wiz->por_en, 0x0);
409 if (ret)
410 return ret;
411
412 return 0;
413 }
414
wiz_p_mac_div_sel(struct wiz * wiz)415 static int wiz_p_mac_div_sel(struct wiz *wiz)
416 {
417 u32 num_lanes = wiz->num_lanes;
418 int ret;
419 int i;
420
421 for (i = 0; i < num_lanes; i++) {
422 if (wiz->lane_phy_type[i] == PHY_TYPE_SGMII ||
423 wiz->lane_phy_type[i] == PHY_TYPE_QSGMII ||
424 wiz->lane_phy_type[i] == PHY_TYPE_USXGMII) {
425 ret = regmap_field_write(wiz->p_mac_div_sel0[i], 1);
426 if (ret)
427 return ret;
428
429 ret = regmap_field_write(wiz->p_mac_div_sel1[i], 2);
430 if (ret)
431 return ret;
432 }
433 }
434
435 return 0;
436 }
437
wiz_mode_select(struct wiz * wiz)438 static int wiz_mode_select(struct wiz *wiz)
439 {
440 u32 num_lanes = wiz->num_lanes;
441 enum wiz_lane_standard_mode mode;
442 int ret;
443 int i;
444
445 for (i = 0; i < num_lanes; i++) {
446 if (wiz->lane_phy_type[i] == PHY_TYPE_DP) {
447 mode = LANE_MODE_GEN1;
448 } else if (wiz->lane_phy_type[i] == PHY_TYPE_QSGMII) {
449 mode = LANE_MODE_GEN2;
450 } else if (wiz->lane_phy_type[i] == PHY_TYPE_USXGMII) {
451 ret = regmap_field_write(wiz->p0_mac_src_sel[i], 0x3);
452 ret = regmap_field_write(wiz->p0_rxfclk_sel[i], 0x3);
453 ret = regmap_field_write(wiz->p0_refclk_sel[i], 0x3);
454 mode = LANE_MODE_GEN1;
455 } else {
456 continue;
457 }
458
459 ret = regmap_field_write(wiz->p_standard_mode[i], mode);
460 if (ret)
461 return ret;
462 }
463
464 return 0;
465 }
466
wiz_init_raw_interface(struct wiz * wiz,bool enable)467 static int wiz_init_raw_interface(struct wiz *wiz, bool enable)
468 {
469 u32 num_lanes = wiz->num_lanes;
470 int i;
471 int ret;
472
473 for (i = 0; i < num_lanes; i++) {
474 ret = regmap_field_write(wiz->p_align[i], enable);
475 if (ret)
476 return ret;
477
478 ret = regmap_field_write(wiz->p_raw_auto_start[i], enable);
479 if (ret)
480 return ret;
481 }
482
483 return 0;
484 }
485
wiz_init(struct wiz * wiz)486 static int wiz_init(struct wiz *wiz)
487 {
488 struct device *dev = wiz->dev;
489 int ret;
490
491 ret = wiz_reset(wiz);
492 if (ret) {
493 dev_err(dev, "WIZ reset failed\n");
494 return ret;
495 }
496
497 ret = wiz_mode_select(wiz);
498 if (ret) {
499 dev_err(dev, "WIZ mode select failed\n");
500 return ret;
501 }
502
503 ret = wiz_p_mac_div_sel(wiz);
504 if (ret) {
505 dev_err(dev, "Configuring P0 MAC DIV SEL failed\n");
506 return ret;
507 }
508
509 ret = wiz_init_raw_interface(wiz, true);
510 if (ret) {
511 dev_err(dev, "WIZ interface initialization failed\n");
512 return ret;
513 }
514
515 return 0;
516 }
517
wiz_regfield_init(struct wiz * wiz)518 static int wiz_regfield_init(struct wiz *wiz)
519 {
520 struct regmap *regmap = wiz->regmap;
521 struct regmap *scm_regmap = wiz->regmap; /* updated later to scm_regmap if applicable */
522 int num_lanes = wiz->num_lanes;
523 struct device *dev = wiz->dev;
524 const struct wiz_data *data = wiz->data;
525 int i;
526
527 wiz->por_en = devm_regmap_field_alloc(dev, regmap, por_en);
528 if (IS_ERR(wiz->por_en)) {
529 dev_err(dev, "POR_EN reg field init failed\n");
530 return PTR_ERR(wiz->por_en);
531 }
532
533 wiz->phy_reset_n = devm_regmap_field_alloc(dev, regmap,
534 phy_reset_n);
535 if (IS_ERR(wiz->phy_reset_n)) {
536 dev_err(dev, "PHY_RESET_N reg field init failed\n");
537 return PTR_ERR(wiz->phy_reset_n);
538 }
539
540 wiz->pma_cmn_refclk_int_mode =
541 devm_regmap_field_alloc(dev, regmap, pma_cmn_refclk_int_mode);
542 if (IS_ERR(wiz->pma_cmn_refclk_int_mode)) {
543 dev_err(dev, "PMA_CMN_REFCLK_INT_MODE reg field init failed\n");
544 return PTR_ERR(wiz->pma_cmn_refclk_int_mode);
545 }
546
547 wiz->pma_cmn_refclk_mode =
548 devm_regmap_field_alloc(dev, regmap, pma_cmn_refclk_mode);
549 if (IS_ERR(wiz->pma_cmn_refclk_mode)) {
550 dev_err(dev, "PMA_CMN_REFCLK_MODE reg field init failed\n");
551 return PTR_ERR(wiz->pma_cmn_refclk_mode);
552 }
553
554 wiz->div_sel_field[CMN_REFCLK_DIG_DIV] =
555 devm_regmap_field_alloc(dev, regmap, pma_cmn_refclk_dig_div);
556 if (IS_ERR(wiz->div_sel_field[CMN_REFCLK_DIG_DIV])) {
557 dev_err(dev, "PMA_CMN_REFCLK_DIG_DIV reg field init failed\n");
558 return PTR_ERR(wiz->div_sel_field[CMN_REFCLK_DIG_DIV]);
559 }
560
561 if (data->pma_cmn_refclk1_dig_div) {
562 wiz->div_sel_field[CMN_REFCLK1_DIG_DIV] =
563 devm_regmap_field_alloc(dev, regmap,
564 *data->pma_cmn_refclk1_dig_div);
565 if (IS_ERR(wiz->div_sel_field[CMN_REFCLK1_DIG_DIV])) {
566 dev_err(dev, "PMA_CMN_REFCLK1_DIG_DIV reg field init failed\n");
567 return PTR_ERR(wiz->div_sel_field[CMN_REFCLK1_DIG_DIV]);
568 }
569 }
570
571 if (wiz->scm_regmap) {
572 scm_regmap = wiz->scm_regmap;
573 wiz->sup_legacy_clk_override =
574 devm_regmap_field_alloc(dev, scm_regmap, sup_legacy_clk_override);
575 if (IS_ERR(wiz->sup_legacy_clk_override)) {
576 dev_err(dev, "SUP_LEGACY_CLK_OVERRIDE reg field init failed\n");
577 return PTR_ERR(wiz->sup_legacy_clk_override);
578 }
579 }
580
581 wiz->mux_sel_field[PLL0_REFCLK] =
582 devm_regmap_field_alloc(dev, scm_regmap, *data->pll0_refclk_mux_sel);
583 if (IS_ERR(wiz->mux_sel_field[PLL0_REFCLK])) {
584 dev_err(dev, "PLL0_REFCLK_SEL reg field init failed\n");
585 return PTR_ERR(wiz->mux_sel_field[PLL0_REFCLK]);
586 }
587
588 wiz->mux_sel_field[PLL1_REFCLK] =
589 devm_regmap_field_alloc(dev, scm_regmap, *data->pll1_refclk_mux_sel);
590 if (IS_ERR(wiz->mux_sel_field[PLL1_REFCLK])) {
591 dev_err(dev, "PLL1_REFCLK_SEL reg field init failed\n");
592 return PTR_ERR(wiz->mux_sel_field[PLL1_REFCLK]);
593 }
594
595 wiz->mux_sel_field[REFCLK_DIG] = devm_regmap_field_alloc(dev, scm_regmap,
596 *data->refclk_dig_sel);
597 if (IS_ERR(wiz->mux_sel_field[REFCLK_DIG])) {
598 dev_err(dev, "REFCLK_DIG_SEL reg field init failed\n");
599 return PTR_ERR(wiz->mux_sel_field[REFCLK_DIG]);
600 }
601
602 if (data->pma_cmn_refclk1_int_mode) {
603 wiz->pma_cmn_refclk1_int_mode =
604 devm_regmap_field_alloc(dev, scm_regmap, *data->pma_cmn_refclk1_int_mode);
605 if (IS_ERR(wiz->pma_cmn_refclk1_int_mode)) {
606 dev_err(dev, "PMA_CMN_REFCLK1_INT_MODE reg field init failed\n");
607 return PTR_ERR(wiz->pma_cmn_refclk1_int_mode);
608 }
609 }
610
611 for (i = 0; i < num_lanes; i++) {
612 wiz->p_enable[i] = devm_regmap_field_alloc(dev, regmap,
613 p_enable[i]);
614 if (IS_ERR(wiz->p_enable[i])) {
615 dev_err(dev, "P%d_ENABLE reg field init failed\n", i);
616 return PTR_ERR(wiz->p_enable[i]);
617 }
618
619 wiz->p_align[i] = devm_regmap_field_alloc(dev, regmap,
620 p_align[i]);
621 if (IS_ERR(wiz->p_align[i])) {
622 dev_err(dev, "P%d_ALIGN reg field init failed\n", i);
623 return PTR_ERR(wiz->p_align[i]);
624 }
625
626 wiz->p_raw_auto_start[i] =
627 devm_regmap_field_alloc(dev, regmap, p_raw_auto_start[i]);
628 if (IS_ERR(wiz->p_raw_auto_start[i])) {
629 dev_err(dev, "P%d_RAW_AUTO_START reg field init fail\n",
630 i);
631 return PTR_ERR(wiz->p_raw_auto_start[i]);
632 }
633
634 wiz->p_standard_mode[i] =
635 devm_regmap_field_alloc(dev, regmap, p_standard_mode[i]);
636 if (IS_ERR(wiz->p_standard_mode[i])) {
637 dev_err(dev, "P%d_STANDARD_MODE reg field init fail\n",
638 i);
639 return PTR_ERR(wiz->p_standard_mode[i]);
640 }
641
642 wiz->p0_fullrt_div[i] = devm_regmap_field_alloc(dev, regmap, p0_fullrt_div[i]);
643 if (IS_ERR(wiz->p0_fullrt_div[i])) {
644 dev_err(dev, "P%d_FULLRT_DIV reg field init failed\n", i);
645 return PTR_ERR(wiz->p0_fullrt_div[i]);
646 }
647
648 wiz->p0_mac_src_sel[i] = devm_regmap_field_alloc(dev, regmap, p0_mac_src_sel[i]);
649 if (IS_ERR(wiz->p0_mac_src_sel[i])) {
650 dev_err(dev, "P%d_MAC_SRC_SEL reg field init failed\n", i);
651 return PTR_ERR(wiz->p0_mac_src_sel[i]);
652 }
653
654 wiz->p0_rxfclk_sel[i] = devm_regmap_field_alloc(dev, regmap, p0_rxfclk_sel[i]);
655 if (IS_ERR(wiz->p0_rxfclk_sel[i])) {
656 dev_err(dev, "P%d_RXFCLK_SEL reg field init failed\n", i);
657 return PTR_ERR(wiz->p0_rxfclk_sel[i]);
658 }
659
660 wiz->p0_refclk_sel[i] = devm_regmap_field_alloc(dev, regmap, p0_refclk_sel[i]);
661 if (IS_ERR(wiz->p0_refclk_sel[i])) {
662 dev_err(dev, "P%d_REFCLK_SEL reg field init failed\n", i);
663 return PTR_ERR(wiz->p0_refclk_sel[i]);
664 }
665
666 wiz->p_mac_div_sel0[i] =
667 devm_regmap_field_alloc(dev, regmap, p_mac_div_sel0[i]);
668 if (IS_ERR(wiz->p_mac_div_sel0[i])) {
669 dev_err(dev, "P%d_MAC_DIV_SEL0 reg field init fail\n",
670 i);
671 return PTR_ERR(wiz->p_mac_div_sel0[i]);
672 }
673
674 wiz->p_mac_div_sel1[i] =
675 devm_regmap_field_alloc(dev, regmap, p_mac_div_sel1[i]);
676 if (IS_ERR(wiz->p_mac_div_sel1[i])) {
677 dev_err(dev, "P%d_MAC_DIV_SEL1 reg field init fail\n",
678 i);
679 return PTR_ERR(wiz->p_mac_div_sel1[i]);
680 }
681 }
682
683 wiz->typec_ln10_swap = devm_regmap_field_alloc(dev, regmap,
684 typec_ln10_swap);
685 if (IS_ERR(wiz->typec_ln10_swap)) {
686 dev_err(dev, "LN10_SWAP reg field init failed\n");
687 return PTR_ERR(wiz->typec_ln10_swap);
688 }
689
690 wiz->typec_ln23_swap = devm_regmap_field_alloc(dev, regmap,
691 typec_ln23_swap);
692 if (IS_ERR(wiz->typec_ln23_swap)) {
693 dev_err(dev, "LN23_SWAP reg field init failed\n");
694 return PTR_ERR(wiz->typec_ln23_swap);
695 }
696
697 wiz->phy_en_refclk = devm_regmap_field_alloc(dev, regmap, phy_en_refclk);
698 if (IS_ERR(wiz->phy_en_refclk)) {
699 dev_err(dev, "PHY_EN_REFCLK reg field init failed\n");
700 return PTR_ERR(wiz->phy_en_refclk);
701 }
702
703 return 0;
704 }
705
wiz_phy_en_refclk_enable(struct clk_hw * hw)706 static int wiz_phy_en_refclk_enable(struct clk_hw *hw)
707 {
708 struct wiz_phy_en_refclk *wiz_phy_en_refclk = to_wiz_phy_en_refclk(hw);
709 struct regmap_field *phy_en_refclk = wiz_phy_en_refclk->phy_en_refclk;
710
711 regmap_field_write(phy_en_refclk, 1);
712
713 return 0;
714 }
715
wiz_phy_en_refclk_disable(struct clk_hw * hw)716 static void wiz_phy_en_refclk_disable(struct clk_hw *hw)
717 {
718 struct wiz_phy_en_refclk *wiz_phy_en_refclk = to_wiz_phy_en_refclk(hw);
719 struct regmap_field *phy_en_refclk = wiz_phy_en_refclk->phy_en_refclk;
720
721 regmap_field_write(phy_en_refclk, 0);
722 }
723
wiz_phy_en_refclk_is_enabled(struct clk_hw * hw)724 static int wiz_phy_en_refclk_is_enabled(struct clk_hw *hw)
725 {
726 struct wiz_phy_en_refclk *wiz_phy_en_refclk = to_wiz_phy_en_refclk(hw);
727 struct regmap_field *phy_en_refclk = wiz_phy_en_refclk->phy_en_refclk;
728 int val;
729
730 regmap_field_read(phy_en_refclk, &val);
731
732 return !!val;
733 }
734
735 static const struct clk_ops wiz_phy_en_refclk_ops = {
736 .enable = wiz_phy_en_refclk_enable,
737 .disable = wiz_phy_en_refclk_disable,
738 .is_enabled = wiz_phy_en_refclk_is_enabled,
739 };
740
wiz_phy_en_refclk_register(struct wiz * wiz)741 static int wiz_phy_en_refclk_register(struct wiz *wiz)
742 {
743 struct wiz_phy_en_refclk *wiz_phy_en_refclk;
744 struct device *dev = wiz->dev;
745 struct clk_init_data *init;
746 struct clk *clk;
747 char *clk_name;
748 unsigned int sz;
749
750 wiz_phy_en_refclk = devm_kzalloc(dev, sizeof(*wiz_phy_en_refclk), GFP_KERNEL);
751 if (!wiz_phy_en_refclk)
752 return -ENOMEM;
753
754 init = &wiz_phy_en_refclk->clk_data;
755
756 init->ops = &wiz_phy_en_refclk_ops;
757 init->flags = 0;
758
759 sz = strlen(dev_name(dev)) + strlen(output_clk_names[TI_WIZ_PHY_EN_REFCLK]) + 2;
760
761 clk_name = kzalloc(sz, GFP_KERNEL);
762 if (!clk_name)
763 return -ENOMEM;
764
765 snprintf(clk_name, sz, "%s_%s", dev_name(dev), output_clk_names[TI_WIZ_PHY_EN_REFCLK]);
766 init->name = clk_name;
767
768 wiz_phy_en_refclk->phy_en_refclk = wiz->phy_en_refclk;
769 wiz_phy_en_refclk->hw.init = init;
770
771 clk = devm_clk_register(dev, &wiz_phy_en_refclk->hw);
772
773 kfree(clk_name);
774
775 if (IS_ERR(clk))
776 return PTR_ERR(clk);
777
778 wiz->output_clks[TI_WIZ_PHY_EN_REFCLK] = clk;
779
780 return 0;
781 }
782
wiz_clk_mux_get_parent(struct clk_hw * hw)783 static u8 wiz_clk_mux_get_parent(struct clk_hw *hw)
784 {
785 struct wiz_clk_mux *mux = to_wiz_clk_mux(hw);
786 struct regmap_field *field = mux->field;
787 unsigned int val;
788
789 regmap_field_read(field, &val);
790 return clk_mux_val_to_index(hw, (u32 *)mux->table, 0, val);
791 }
792
wiz_clk_mux_set_parent(struct clk_hw * hw,u8 index)793 static int wiz_clk_mux_set_parent(struct clk_hw *hw, u8 index)
794 {
795 struct wiz_clk_mux *mux = to_wiz_clk_mux(hw);
796 struct regmap_field *field = mux->field;
797 int val;
798
799 val = mux->table[index];
800 return regmap_field_write(field, val);
801 }
802
803 static const struct clk_ops wiz_clk_mux_ops = {
804 .determine_rate = __clk_mux_determine_rate,
805 .set_parent = wiz_clk_mux_set_parent,
806 .get_parent = wiz_clk_mux_get_parent,
807 };
808
wiz_mux_clk_register(struct wiz * wiz,struct regmap_field * field,const struct wiz_clk_mux_sel * mux_sel,int clk_index)809 static int wiz_mux_clk_register(struct wiz *wiz, struct regmap_field *field,
810 const struct wiz_clk_mux_sel *mux_sel, int clk_index)
811 {
812 struct device *dev = wiz->dev;
813 struct clk_init_data *init;
814 const char **parent_names;
815 unsigned int num_parents;
816 struct wiz_clk_mux *mux;
817 char clk_name[100];
818 struct clk *clk;
819 int ret = 0, i;
820
821 mux = devm_kzalloc(dev, sizeof(*mux), GFP_KERNEL);
822 if (!mux)
823 return -ENOMEM;
824
825 num_parents = mux_sel->num_parents;
826
827 parent_names = kzalloc((sizeof(char *) * num_parents), GFP_KERNEL);
828 if (!parent_names)
829 return -ENOMEM;
830
831 for (i = 0; i < num_parents; i++) {
832 clk = wiz->input_clks[mux_sel->parents[i]];
833 if (IS_ERR_OR_NULL(clk)) {
834 dev_err(dev, "Failed to get parent clk for %s\n",
835 output_clk_names[clk_index]);
836 ret = -EINVAL;
837 goto err;
838 }
839 parent_names[i] = __clk_get_name(clk);
840 }
841
842 snprintf(clk_name, sizeof(clk_name), "%s_%s", dev_name(dev), output_clk_names[clk_index]);
843
844 init = &mux->clk_data;
845
846 init->ops = &wiz_clk_mux_ops;
847 init->flags = CLK_SET_RATE_NO_REPARENT;
848 init->parent_names = parent_names;
849 init->num_parents = num_parents;
850 init->name = clk_name;
851
852 mux->field = field;
853 mux->table = mux_sel->table;
854 mux->hw.init = init;
855
856 clk = devm_clk_register(dev, &mux->hw);
857 if (IS_ERR(clk)) {
858 ret = PTR_ERR(clk);
859 goto err;
860 }
861
862 wiz->output_clks[clk_index] = clk;
863
864 err:
865 kfree(parent_names);
866
867 return ret;
868 }
869
wiz_mux_of_clk_register(struct wiz * wiz,struct device_node * node,struct regmap_field * field,const u32 * table)870 static int wiz_mux_of_clk_register(struct wiz *wiz, struct device_node *node,
871 struct regmap_field *field, const u32 *table)
872 {
873 struct device *dev = wiz->dev;
874 struct clk_init_data *init;
875 const char **parent_names;
876 unsigned int num_parents;
877 struct wiz_clk_mux *mux;
878 char clk_name[100];
879 struct clk *clk;
880 int ret;
881
882 mux = devm_kzalloc(dev, sizeof(*mux), GFP_KERNEL);
883 if (!mux)
884 return -ENOMEM;
885
886 num_parents = of_clk_get_parent_count(node);
887 if (num_parents < 2) {
888 dev_err(dev, "SERDES clock must have parents\n");
889 return -EINVAL;
890 }
891
892 parent_names = devm_kzalloc(dev, (sizeof(char *) * num_parents),
893 GFP_KERNEL);
894 if (!parent_names)
895 return -ENOMEM;
896
897 of_clk_parent_fill(node, parent_names, num_parents);
898
899 snprintf(clk_name, sizeof(clk_name), "%s_%s", dev_name(dev),
900 node->name);
901
902 init = &mux->clk_data;
903
904 init->ops = &wiz_clk_mux_ops;
905 init->flags = CLK_SET_RATE_NO_REPARENT;
906 init->parent_names = parent_names;
907 init->num_parents = num_parents;
908 init->name = clk_name;
909
910 mux->field = field;
911 mux->table = table;
912 mux->hw.init = init;
913
914 clk = devm_clk_register(dev, &mux->hw);
915 if (IS_ERR(clk))
916 return PTR_ERR(clk);
917
918 ret = of_clk_add_provider(node, of_clk_src_simple_get, clk);
919 if (ret)
920 dev_err(dev, "Failed to add clock provider: %s\n", clk_name);
921
922 return ret;
923 }
924
wiz_clk_div_recalc_rate(struct clk_hw * hw,unsigned long parent_rate)925 static unsigned long wiz_clk_div_recalc_rate(struct clk_hw *hw,
926 unsigned long parent_rate)
927 {
928 struct wiz_clk_divider *div = to_wiz_clk_div(hw);
929 struct regmap_field *field = div->field;
930 int val;
931
932 regmap_field_read(field, &val);
933
934 return divider_recalc_rate(hw, parent_rate, val, div->table, 0x0, 2);
935 }
936
wiz_clk_div_round_rate(struct clk_hw * hw,unsigned long rate,unsigned long * prate)937 static long wiz_clk_div_round_rate(struct clk_hw *hw, unsigned long rate,
938 unsigned long *prate)
939 {
940 struct wiz_clk_divider *div = to_wiz_clk_div(hw);
941
942 return divider_round_rate(hw, rate, prate, div->table, 2, 0x0);
943 }
944
wiz_clk_div_set_rate(struct clk_hw * hw,unsigned long rate,unsigned long parent_rate)945 static int wiz_clk_div_set_rate(struct clk_hw *hw, unsigned long rate,
946 unsigned long parent_rate)
947 {
948 struct wiz_clk_divider *div = to_wiz_clk_div(hw);
949 struct regmap_field *field = div->field;
950 int val;
951
952 val = divider_get_val(rate, parent_rate, div->table, 2, 0x0);
953 if (val < 0)
954 return val;
955
956 return regmap_field_write(field, val);
957 }
958
959 static const struct clk_ops wiz_clk_div_ops = {
960 .recalc_rate = wiz_clk_div_recalc_rate,
961 .round_rate = wiz_clk_div_round_rate,
962 .set_rate = wiz_clk_div_set_rate,
963 };
964
wiz_div_clk_register(struct wiz * wiz,struct device_node * node,struct regmap_field * field,const struct clk_div_table * table)965 static int wiz_div_clk_register(struct wiz *wiz, struct device_node *node,
966 struct regmap_field *field,
967 const struct clk_div_table *table)
968 {
969 struct device *dev = wiz->dev;
970 struct wiz_clk_divider *div;
971 struct clk_init_data *init;
972 const char **parent_names;
973 char clk_name[100];
974 struct clk *clk;
975 int ret;
976
977 div = devm_kzalloc(dev, sizeof(*div), GFP_KERNEL);
978 if (!div)
979 return -ENOMEM;
980
981 snprintf(clk_name, sizeof(clk_name), "%s_%s", dev_name(dev),
982 node->name);
983
984 parent_names = devm_kzalloc(dev, sizeof(char *), GFP_KERNEL);
985 if (!parent_names)
986 return -ENOMEM;
987
988 of_clk_parent_fill(node, parent_names, 1);
989
990 init = &div->clk_data;
991
992 init->ops = &wiz_clk_div_ops;
993 init->flags = 0;
994 init->parent_names = parent_names;
995 init->num_parents = 1;
996 init->name = clk_name;
997
998 div->field = field;
999 div->table = table;
1000 div->hw.init = init;
1001
1002 clk = devm_clk_register(dev, &div->hw);
1003 if (IS_ERR(clk))
1004 return PTR_ERR(clk);
1005
1006 ret = of_clk_add_provider(node, of_clk_src_simple_get, clk);
1007 if (ret)
1008 dev_err(dev, "Failed to add clock provider: %s\n", clk_name);
1009
1010 return ret;
1011 }
1012
wiz_clock_cleanup(struct wiz * wiz,struct device_node * node)1013 static void wiz_clock_cleanup(struct wiz *wiz, struct device_node *node)
1014 {
1015 const struct wiz_clk_mux_sel *clk_mux_sel = wiz->clk_mux_sel;
1016 struct device *dev = wiz->dev;
1017 struct device_node *clk_node;
1018 int i;
1019
1020 switch (wiz->type) {
1021 case AM64_WIZ_10G:
1022 case J7200_WIZ_10G:
1023 case J784S4_WIZ_10G:
1024 case J721S2_WIZ_10G:
1025 of_clk_del_provider(dev->of_node);
1026 return;
1027 default:
1028 break;
1029 }
1030
1031 for (i = 0; i < WIZ_MUX_NUM_CLOCKS; i++) {
1032 clk_node = of_get_child_by_name(node, clk_mux_sel[i].node_name);
1033 of_clk_del_provider(clk_node);
1034 of_node_put(clk_node);
1035 }
1036
1037 for (i = 0; i < wiz->clk_div_sel_num; i++) {
1038 clk_node = of_get_child_by_name(node, clk_div_sel[i].node_name);
1039 of_clk_del_provider(clk_node);
1040 of_node_put(clk_node);
1041 }
1042
1043 of_clk_del_provider(wiz->dev->of_node);
1044 }
1045
wiz_clock_register(struct wiz * wiz)1046 static int wiz_clock_register(struct wiz *wiz)
1047 {
1048 const struct wiz_clk_mux_sel *clk_mux_sel = wiz->clk_mux_sel;
1049 struct device *dev = wiz->dev;
1050 struct device_node *node = dev->of_node;
1051 int clk_index;
1052 int ret;
1053 int i;
1054
1055 clk_index = TI_WIZ_PLL0_REFCLK;
1056 for (i = 0; i < WIZ_MUX_NUM_CLOCKS; i++, clk_index++) {
1057 ret = wiz_mux_clk_register(wiz, wiz->mux_sel_field[i], &clk_mux_sel[i], clk_index);
1058 if (ret) {
1059 dev_err(dev, "Failed to register clk: %s\n", output_clk_names[clk_index]);
1060 return ret;
1061 }
1062 }
1063
1064 ret = wiz_phy_en_refclk_register(wiz);
1065 if (ret) {
1066 dev_err(dev, "Failed to add phy-en-refclk\n");
1067 return ret;
1068 }
1069
1070 wiz->clk_data.clks = wiz->output_clks;
1071 wiz->clk_data.clk_num = WIZ_MAX_OUTPUT_CLOCKS;
1072 ret = of_clk_add_provider(node, of_clk_src_onecell_get, &wiz->clk_data);
1073 if (ret)
1074 dev_err(dev, "Failed to add clock provider: %s\n", node->name);
1075
1076 return ret;
1077 }
1078
wiz_clock_init(struct wiz * wiz,struct device_node * node)1079 static int wiz_clock_init(struct wiz *wiz, struct device_node *node)
1080 {
1081 const struct wiz_clk_mux_sel *clk_mux_sel = wiz->clk_mux_sel;
1082 struct device *dev = wiz->dev;
1083 struct device_node *clk_node;
1084 const char *node_name;
1085 unsigned long rate;
1086 struct clk *clk;
1087 int ret;
1088 int i;
1089
1090 clk = devm_clk_get(dev, "core_ref_clk");
1091 if (IS_ERR(clk)) {
1092 dev_err(dev, "core_ref_clk clock not found\n");
1093 ret = PTR_ERR(clk);
1094 return ret;
1095 }
1096 wiz->input_clks[WIZ_CORE_REFCLK] = clk;
1097
1098 rate = clk_get_rate(clk);
1099 if (rate >= 100000000)
1100 regmap_field_write(wiz->pma_cmn_refclk_int_mode, 0x1);
1101 else
1102 regmap_field_write(wiz->pma_cmn_refclk_int_mode, 0x3);
1103
1104 switch (wiz->type) {
1105 case AM64_WIZ_10G:
1106 case J7200_WIZ_10G:
1107 switch (rate) {
1108 case REF_CLK_100MHZ:
1109 regmap_field_write(wiz->div_sel_field[CMN_REFCLK_DIG_DIV], 0x2);
1110 break;
1111 case REF_CLK_156_25MHZ:
1112 regmap_field_write(wiz->div_sel_field[CMN_REFCLK_DIG_DIV], 0x3);
1113 break;
1114 default:
1115 regmap_field_write(wiz->div_sel_field[CMN_REFCLK_DIG_DIV], 0);
1116 break;
1117 }
1118 break;
1119 default:
1120 break;
1121 }
1122
1123 if (wiz->data->pma_cmn_refclk1_int_mode) {
1124 clk = devm_clk_get(dev, "core_ref1_clk");
1125 if (IS_ERR(clk)) {
1126 dev_err(dev, "core_ref1_clk clock not found\n");
1127 ret = PTR_ERR(clk);
1128 return ret;
1129 }
1130 wiz->input_clks[WIZ_CORE_REFCLK1] = clk;
1131
1132 rate = clk_get_rate(clk);
1133 if (rate >= 100000000)
1134 regmap_field_write(wiz->pma_cmn_refclk1_int_mode, 0x1);
1135 else
1136 regmap_field_write(wiz->pma_cmn_refclk1_int_mode, 0x3);
1137 }
1138
1139 clk = devm_clk_get(dev, "ext_ref_clk");
1140 if (IS_ERR(clk)) {
1141 dev_err(dev, "ext_ref_clk clock not found\n");
1142 ret = PTR_ERR(clk);
1143 return ret;
1144 }
1145 wiz->input_clks[WIZ_EXT_REFCLK] = clk;
1146
1147 rate = clk_get_rate(clk);
1148 if (rate >= 100000000)
1149 regmap_field_write(wiz->pma_cmn_refclk_mode, 0x0);
1150 else
1151 regmap_field_write(wiz->pma_cmn_refclk_mode, 0x2);
1152
1153 switch (wiz->type) {
1154 case AM64_WIZ_10G:
1155 case J7200_WIZ_10G:
1156 case J784S4_WIZ_10G:
1157 case J721S2_WIZ_10G:
1158 ret = wiz_clock_register(wiz);
1159 if (ret)
1160 dev_err(dev, "Failed to register wiz clocks\n");
1161 return ret;
1162 default:
1163 break;
1164 }
1165
1166 for (i = 0; i < WIZ_MUX_NUM_CLOCKS; i++) {
1167 node_name = clk_mux_sel[i].node_name;
1168 clk_node = of_get_child_by_name(node, node_name);
1169 if (!clk_node) {
1170 dev_err(dev, "Unable to get %s node\n", node_name);
1171 ret = -EINVAL;
1172 goto err;
1173 }
1174
1175 ret = wiz_mux_of_clk_register(wiz, clk_node, wiz->mux_sel_field[i],
1176 clk_mux_sel[i].table);
1177 if (ret) {
1178 dev_err(dev, "Failed to register %s clock\n",
1179 node_name);
1180 of_node_put(clk_node);
1181 goto err;
1182 }
1183
1184 of_node_put(clk_node);
1185 }
1186
1187 for (i = 0; i < wiz->clk_div_sel_num; i++) {
1188 node_name = clk_div_sel[i].node_name;
1189 clk_node = of_get_child_by_name(node, node_name);
1190 if (!clk_node) {
1191 dev_err(dev, "Unable to get %s node\n", node_name);
1192 ret = -EINVAL;
1193 goto err;
1194 }
1195
1196 ret = wiz_div_clk_register(wiz, clk_node, wiz->div_sel_field[i],
1197 clk_div_sel[i].table);
1198 if (ret) {
1199 dev_err(dev, "Failed to register %s clock\n",
1200 node_name);
1201 of_node_put(clk_node);
1202 goto err;
1203 }
1204
1205 of_node_put(clk_node);
1206 }
1207
1208 return 0;
1209 err:
1210 wiz_clock_cleanup(wiz, node);
1211
1212 return ret;
1213 }
1214
wiz_phy_reset_assert(struct reset_controller_dev * rcdev,unsigned long id)1215 static int wiz_phy_reset_assert(struct reset_controller_dev *rcdev,
1216 unsigned long id)
1217 {
1218 struct device *dev = rcdev->dev;
1219 struct wiz *wiz = dev_get_drvdata(dev);
1220 int ret = 0;
1221
1222 if (id == 0) {
1223 ret = regmap_field_write(wiz->phy_reset_n, false);
1224 return ret;
1225 }
1226
1227 ret = regmap_field_write(wiz->p_enable[id - 1], P_ENABLE_DISABLE);
1228 return ret;
1229 }
1230
wiz_phy_fullrt_div(struct wiz * wiz,int lane)1231 static int wiz_phy_fullrt_div(struct wiz *wiz, int lane)
1232 {
1233 switch (wiz->type) {
1234 case AM64_WIZ_10G:
1235 if (wiz->lane_phy_type[lane] == PHY_TYPE_PCIE)
1236 return regmap_field_write(wiz->p0_fullrt_div[lane], 0x1);
1237 break;
1238
1239 case J721E_WIZ_16G:
1240 case J721E_WIZ_10G:
1241 case J7200_WIZ_10G:
1242 case J721S2_WIZ_10G:
1243 if (wiz->lane_phy_type[lane] == PHY_TYPE_SGMII)
1244 return regmap_field_write(wiz->p0_fullrt_div[lane], 0x2);
1245 break;
1246 default:
1247 return 0;
1248 }
1249 return 0;
1250 }
1251
wiz_phy_reset_deassert(struct reset_controller_dev * rcdev,unsigned long id)1252 static int wiz_phy_reset_deassert(struct reset_controller_dev *rcdev,
1253 unsigned long id)
1254 {
1255 struct device *dev = rcdev->dev;
1256 struct wiz *wiz = dev_get_drvdata(dev);
1257 int ret;
1258
1259 if (id == 0) {
1260 /* if typec-dir gpio was specified, set LN10 SWAP bit based on that */
1261 if (wiz->gpio_typec_dir) {
1262 if (wiz->typec_dir_delay)
1263 msleep_interruptible(wiz->typec_dir_delay);
1264
1265 if (gpiod_get_value_cansleep(wiz->gpio_typec_dir))
1266 regmap_field_write(wiz->typec_ln10_swap, 1);
1267 else
1268 regmap_field_write(wiz->typec_ln10_swap, 0);
1269 } else {
1270 /* if no typec-dir gpio is specified and PHY type is USB3
1271 * with master lane number is '0' or '2', then set LN10 or
1272 * LN23 SWAP bit to '1' respectively.
1273 */
1274 u32 num_lanes = wiz->num_lanes;
1275 int i;
1276
1277 for (i = 0; i < num_lanes; i++) {
1278 if (wiz->lane_phy_type[i] == PHY_TYPE_USB3) {
1279 switch (wiz->master_lane_num[i]) {
1280 case LANE0:
1281 regmap_field_write(wiz->typec_ln10_swap, 1);
1282 break;
1283 case LANE2:
1284 regmap_field_write(wiz->typec_ln23_swap, 1);
1285 break;
1286 default:
1287 break;
1288 }
1289 }
1290 }
1291 }
1292 }
1293
1294 if (id == 0) {
1295 ret = regmap_field_write(wiz->phy_reset_n, true);
1296 return ret;
1297 }
1298
1299 ret = wiz_phy_fullrt_div(wiz, id - 1);
1300 if (ret)
1301 return ret;
1302
1303 if (wiz->lane_phy_type[id - 1] == PHY_TYPE_DP)
1304 ret = regmap_field_write(wiz->p_enable[id - 1], P_ENABLE);
1305 else
1306 ret = regmap_field_write(wiz->p_enable[id - 1], P_ENABLE_FORCE);
1307
1308 return ret;
1309 }
1310
1311 static const struct reset_control_ops wiz_phy_reset_ops = {
1312 .assert = wiz_phy_reset_assert,
1313 .deassert = wiz_phy_reset_deassert,
1314 };
1315
1316 static const struct regmap_config wiz_regmap_config = {
1317 .reg_bits = 32,
1318 .val_bits = 32,
1319 .reg_stride = 4,
1320 .fast_io = true,
1321 };
1322
1323 static struct wiz_data j721e_16g_data = {
1324 .type = J721E_WIZ_16G,
1325 .pll0_refclk_mux_sel = &pll0_refclk_mux_sel,
1326 .pll1_refclk_mux_sel = &pll1_refclk_mux_sel,
1327 .refclk_dig_sel = &refclk_dig_sel_16g,
1328 .pma_cmn_refclk1_dig_div = &pma_cmn_refclk1_dig_div,
1329 .clk_mux_sel = clk_mux_sel_16g,
1330 .clk_div_sel_num = WIZ_DIV_NUM_CLOCKS_16G,
1331 };
1332
1333 static struct wiz_data j721e_10g_data = {
1334 .type = J721E_WIZ_10G,
1335 .pll0_refclk_mux_sel = &pll0_refclk_mux_sel,
1336 .pll1_refclk_mux_sel = &pll1_refclk_mux_sel,
1337 .refclk_dig_sel = &refclk_dig_sel_10g,
1338 .clk_mux_sel = clk_mux_sel_10g,
1339 .clk_div_sel_num = WIZ_DIV_NUM_CLOCKS_10G,
1340 };
1341
1342 static struct wiz_data am64_10g_data = {
1343 .type = AM64_WIZ_10G,
1344 .pll0_refclk_mux_sel = &pll0_refclk_mux_sel,
1345 .pll1_refclk_mux_sel = &pll1_refclk_mux_sel,
1346 .refclk_dig_sel = &refclk_dig_sel_10g,
1347 .clk_mux_sel = clk_mux_sel_10g,
1348 .clk_div_sel_num = WIZ_DIV_NUM_CLOCKS_10G,
1349 };
1350
1351 static struct wiz_data j7200_pg2_10g_data = {
1352 .type = J7200_WIZ_10G,
1353 .pll0_refclk_mux_sel = &sup_pll0_refclk_mux_sel,
1354 .pll1_refclk_mux_sel = &sup_pll1_refclk_mux_sel,
1355 .refclk_dig_sel = &sup_refclk_dig_sel_10g,
1356 .pma_cmn_refclk1_int_mode = &sup_pma_cmn_refclk1_int_mode,
1357 .clk_mux_sel = clk_mux_sel_10g_2_refclk,
1358 .clk_div_sel_num = WIZ_DIV_NUM_CLOCKS_10G,
1359 };
1360
1361 static struct wiz_data j784s4_10g_data = {
1362 .type = J784S4_WIZ_10G,
1363 .pll0_refclk_mux_sel = &pll0_refclk_mux_sel_2,
1364 .pll1_refclk_mux_sel = &pll1_refclk_mux_sel_2,
1365 .refclk_dig_sel = &refclk_dig_sel_16g,
1366 .pma_cmn_refclk1_int_mode = &pma_cmn_refclk1_int_mode,
1367 .clk_mux_sel = clk_mux_sel_10g_2_refclk,
1368 .clk_div_sel_num = WIZ_DIV_NUM_CLOCKS_10G,
1369 };
1370
1371 static struct wiz_data j721s2_10g_data = {
1372 .type = J721S2_WIZ_10G,
1373 .pll0_refclk_mux_sel = &pll0_refclk_mux_sel,
1374 .pll1_refclk_mux_sel = &pll1_refclk_mux_sel,
1375 .refclk_dig_sel = &refclk_dig_sel_10g,
1376 .clk_mux_sel = clk_mux_sel_10g,
1377 .clk_div_sel_num = WIZ_DIV_NUM_CLOCKS_10G,
1378 };
1379
1380 static const struct of_device_id wiz_id_table[] = {
1381 {
1382 .compatible = "ti,j721e-wiz-16g", .data = &j721e_16g_data,
1383 },
1384 {
1385 .compatible = "ti,j721e-wiz-10g", .data = &j721e_10g_data,
1386 },
1387 {
1388 .compatible = "ti,am64-wiz-10g", .data = &am64_10g_data,
1389 },
1390 {
1391 .compatible = "ti,j7200-wiz-10g", .data = &j7200_pg2_10g_data,
1392 },
1393 {
1394 .compatible = "ti,j784s4-wiz-10g", .data = &j784s4_10g_data,
1395 },
1396 {
1397 .compatible = "ti,j721s2-wiz-10g", .data = &j721s2_10g_data,
1398 },
1399 {}
1400 };
1401 MODULE_DEVICE_TABLE(of, wiz_id_table);
1402
wiz_get_lane_phy_types(struct device * dev,struct wiz * wiz)1403 static int wiz_get_lane_phy_types(struct device *dev, struct wiz *wiz)
1404 {
1405 struct device_node *serdes, *subnode;
1406
1407 serdes = of_get_child_by_name(dev->of_node, "serdes");
1408 if (!serdes) {
1409 dev_err(dev, "%s: Getting \"serdes\"-node failed\n", __func__);
1410 return -EINVAL;
1411 }
1412
1413 for_each_child_of_node(serdes, subnode) {
1414 u32 reg, num_lanes = 1, phy_type = PHY_NONE;
1415 int ret, i;
1416
1417 if (!(of_node_name_eq(subnode, "phy") ||
1418 of_node_name_eq(subnode, "link")))
1419 continue;
1420
1421 ret = of_property_read_u32(subnode, "reg", ®);
1422 if (ret) {
1423 of_node_put(subnode);
1424 dev_err(dev,
1425 "%s: Reading \"reg\" from \"%s\" failed: %d\n",
1426 __func__, subnode->name, ret);
1427 return ret;
1428 }
1429 of_property_read_u32(subnode, "cdns,num-lanes", &num_lanes);
1430 of_property_read_u32(subnode, "cdns,phy-type", &phy_type);
1431
1432 dev_dbg(dev, "%s: Lanes %u-%u have phy-type %u\n", __func__,
1433 reg, reg + num_lanes - 1, phy_type);
1434
1435 for (i = reg; i < reg + num_lanes; i++) {
1436 wiz->master_lane_num[i] = reg;
1437 wiz->lane_phy_type[i] = phy_type;
1438 }
1439 }
1440
1441 return 0;
1442 }
1443
wiz_probe(struct platform_device * pdev)1444 static int wiz_probe(struct platform_device *pdev)
1445 {
1446 struct reset_controller_dev *phy_reset_dev;
1447 struct device *dev = &pdev->dev;
1448 struct device_node *node = dev->of_node;
1449 struct platform_device *serdes_pdev;
1450 bool already_configured = false;
1451 struct device_node *child_node;
1452 struct regmap *regmap;
1453 struct resource res;
1454 void __iomem *base;
1455 struct wiz *wiz;
1456 int ret, val, i;
1457 u32 num_lanes;
1458 const struct wiz_data *data;
1459
1460 wiz = devm_kzalloc(dev, sizeof(*wiz), GFP_KERNEL);
1461 if (!wiz)
1462 return -ENOMEM;
1463
1464 data = of_device_get_match_data(dev);
1465 if (!data) {
1466 dev_err(dev, "NULL device data\n");
1467 return -EINVAL;
1468 }
1469
1470 wiz->data = data;
1471 wiz->type = data->type;
1472
1473 child_node = of_get_child_by_name(node, "serdes");
1474 if (!child_node) {
1475 dev_err(dev, "Failed to get SERDES child DT node\n");
1476 return -ENODEV;
1477 }
1478
1479 ret = of_address_to_resource(child_node, 0, &res);
1480 if (ret) {
1481 dev_err(dev, "Failed to get memory resource\n");
1482 goto err_addr_to_resource;
1483 }
1484
1485 base = devm_ioremap(dev, res.start, resource_size(&res));
1486 if (!base) {
1487 ret = -ENOMEM;
1488 goto err_addr_to_resource;
1489 }
1490
1491 regmap = devm_regmap_init_mmio(dev, base, &wiz_regmap_config);
1492 if (IS_ERR(regmap)) {
1493 dev_err(dev, "Failed to initialize regmap\n");
1494 ret = PTR_ERR(regmap);
1495 goto err_addr_to_resource;
1496 }
1497
1498 wiz->scm_regmap = syscon_regmap_lookup_by_phandle(node, "ti,scm");
1499 if (IS_ERR(wiz->scm_regmap)) {
1500 if (wiz->type == J7200_WIZ_10G) {
1501 dev_err(dev, "Couldn't get ti,scm regmap\n");
1502 ret = -ENODEV;
1503 goto err_addr_to_resource;
1504 }
1505
1506 wiz->scm_regmap = NULL;
1507 }
1508
1509 ret = of_property_read_u32(node, "num-lanes", &num_lanes);
1510 if (ret) {
1511 dev_err(dev, "Failed to read num-lanes property\n");
1512 goto err_addr_to_resource;
1513 }
1514
1515 if (num_lanes > WIZ_MAX_LANES) {
1516 dev_err(dev, "Cannot support %d lanes\n", num_lanes);
1517 ret = -ENODEV;
1518 goto err_addr_to_resource;
1519 }
1520
1521 wiz->gpio_typec_dir = devm_gpiod_get_optional(dev, "typec-dir",
1522 GPIOD_IN);
1523 if (IS_ERR(wiz->gpio_typec_dir)) {
1524 ret = PTR_ERR(wiz->gpio_typec_dir);
1525 if (ret != -EPROBE_DEFER)
1526 dev_err(dev, "Failed to request typec-dir gpio: %d\n",
1527 ret);
1528 goto err_addr_to_resource;
1529 }
1530
1531 if (wiz->gpio_typec_dir) {
1532 ret = of_property_read_u32(node, "typec-dir-debounce-ms",
1533 &wiz->typec_dir_delay);
1534 if (ret && ret != -EINVAL) {
1535 dev_err(dev, "Invalid typec-dir-debounce property\n");
1536 goto err_addr_to_resource;
1537 }
1538
1539 /* use min. debounce from Type-C spec if not provided in DT */
1540 if (ret == -EINVAL)
1541 wiz->typec_dir_delay = WIZ_TYPEC_DIR_DEBOUNCE_MIN;
1542
1543 if (wiz->typec_dir_delay < WIZ_TYPEC_DIR_DEBOUNCE_MIN ||
1544 wiz->typec_dir_delay > WIZ_TYPEC_DIR_DEBOUNCE_MAX) {
1545 ret = -EINVAL;
1546 dev_err(dev, "Invalid typec-dir-debounce property\n");
1547 goto err_addr_to_resource;
1548 }
1549 }
1550
1551 ret = wiz_get_lane_phy_types(dev, wiz);
1552 if (ret)
1553 goto err_addr_to_resource;
1554
1555 wiz->dev = dev;
1556 wiz->regmap = regmap;
1557 wiz->num_lanes = num_lanes;
1558 wiz->clk_mux_sel = data->clk_mux_sel;
1559 wiz->clk_div_sel = clk_div_sel;
1560 wiz->clk_div_sel_num = data->clk_div_sel_num;
1561
1562 platform_set_drvdata(pdev, wiz);
1563
1564 ret = wiz_regfield_init(wiz);
1565 if (ret) {
1566 dev_err(dev, "Failed to initialize regfields\n");
1567 goto err_addr_to_resource;
1568 }
1569
1570 /* Enable supplemental Control override if available */
1571 if (wiz->scm_regmap)
1572 regmap_field_write(wiz->sup_legacy_clk_override, 1);
1573
1574 phy_reset_dev = &wiz->wiz_phy_reset_dev;
1575 phy_reset_dev->dev = dev;
1576 phy_reset_dev->ops = &wiz_phy_reset_ops,
1577 phy_reset_dev->owner = THIS_MODULE,
1578 phy_reset_dev->of_node = node;
1579 /* Reset for each of the lane and one for the entire SERDES */
1580 phy_reset_dev->nr_resets = num_lanes + 1;
1581
1582 ret = devm_reset_controller_register(dev, phy_reset_dev);
1583 if (ret < 0) {
1584 dev_warn(dev, "Failed to register reset controller\n");
1585 goto err_addr_to_resource;
1586 }
1587
1588 pm_runtime_enable(dev);
1589 ret = pm_runtime_get_sync(dev);
1590 if (ret < 0) {
1591 dev_err(dev, "pm_runtime_get_sync failed\n");
1592 goto err_get_sync;
1593 }
1594
1595 ret = wiz_clock_init(wiz, node);
1596 if (ret < 0) {
1597 dev_warn(dev, "Failed to initialize clocks\n");
1598 goto err_get_sync;
1599 }
1600
1601 for (i = 0; i < wiz->num_lanes; i++) {
1602 regmap_field_read(wiz->p_enable[i], &val);
1603 if (val & (P_ENABLE | P_ENABLE_FORCE)) {
1604 already_configured = true;
1605 break;
1606 }
1607 }
1608
1609 if (!already_configured) {
1610 ret = wiz_init(wiz);
1611 if (ret) {
1612 dev_err(dev, "WIZ initialization failed\n");
1613 goto err_wiz_init;
1614 }
1615 }
1616
1617 serdes_pdev = of_platform_device_create(child_node, NULL, dev);
1618 if (!serdes_pdev) {
1619 dev_WARN(dev, "Unable to create SERDES platform device\n");
1620 ret = -ENOMEM;
1621 goto err_wiz_init;
1622 }
1623 wiz->serdes_pdev = serdes_pdev;
1624
1625 of_node_put(child_node);
1626 return 0;
1627
1628 err_wiz_init:
1629 wiz_clock_cleanup(wiz, node);
1630
1631 err_get_sync:
1632 pm_runtime_put(dev);
1633 pm_runtime_disable(dev);
1634
1635 err_addr_to_resource:
1636 of_node_put(child_node);
1637
1638 return ret;
1639 }
1640
wiz_remove(struct platform_device * pdev)1641 static void wiz_remove(struct platform_device *pdev)
1642 {
1643 struct device *dev = &pdev->dev;
1644 struct device_node *node = dev->of_node;
1645 struct platform_device *serdes_pdev;
1646 struct wiz *wiz;
1647
1648 wiz = dev_get_drvdata(dev);
1649 serdes_pdev = wiz->serdes_pdev;
1650
1651 of_platform_device_destroy(&serdes_pdev->dev, NULL);
1652 wiz_clock_cleanup(wiz, node);
1653 pm_runtime_put(dev);
1654 pm_runtime_disable(dev);
1655 }
1656
1657 static struct platform_driver wiz_driver = {
1658 .probe = wiz_probe,
1659 .remove_new = wiz_remove,
1660 .driver = {
1661 .name = "wiz",
1662 .of_match_table = wiz_id_table,
1663 },
1664 };
1665 module_platform_driver(wiz_driver);
1666
1667 MODULE_AUTHOR("Texas Instruments Inc.");
1668 MODULE_DESCRIPTION("TI J721E WIZ driver");
1669 MODULE_LICENSE("GPL v2");
1670