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[people/ms/u-boot.git] / drivers / usb / host / ehci-tegra.c
1 /*
2 * Copyright (c) 2011 The Chromium OS Authors.
3 * Copyright (c) 2009-2015 NVIDIA Corporation
4 * Copyright (c) 2013 Lucas Stach
5 *
6 * SPDX-License-Identifier: GPL-2.0+
7 */
8
9 #include <common.h>
10 #include <dm.h>
11 #include <asm/errno.h>
12 #include <asm/io.h>
13 #include <asm-generic/gpio.h>
14 #include <asm/arch/clock.h>
15 #include <asm/arch-tegra/usb.h>
16 #include <asm/arch-tegra/clk_rst.h>
17 #include <usb.h>
18 #include <usb/ulpi.h>
19 #include <libfdt.h>
20 #include <fdtdec.h>
21
22 #include "ehci.h"
23
24 DECLARE_GLOBAL_DATA_PTR;
25
26 #define USB1_ADDR_MASK 0xFFFF0000
27
28 #define HOSTPC1_DEVLC 0x84
29 #define HOSTPC1_PSPD(x) (((x) >> 25) & 0x3)
30
31 #ifdef CONFIG_USB_ULPI
32 #ifndef CONFIG_USB_ULPI_VIEWPORT
33 #error "To use CONFIG_USB_ULPI on Tegra Boards you have to also \
34 define CONFIG_USB_ULPI_VIEWPORT"
35 #endif
36 #endif
37
38 /* Parameters we need for USB */
39 enum {
40 PARAM_DIVN, /* PLL FEEDBACK DIVIDer */
41 PARAM_DIVM, /* PLL INPUT DIVIDER */
42 PARAM_DIVP, /* POST DIVIDER (2^N) */
43 PARAM_CPCON, /* BASE PLLC CHARGE Pump setup ctrl */
44 PARAM_LFCON, /* BASE PLLC LOOP FILter setup ctrl */
45 PARAM_ENABLE_DELAY_COUNT, /* PLL-U Enable Delay Count */
46 PARAM_STABLE_COUNT, /* PLL-U STABLE count */
47 PARAM_ACTIVE_DELAY_COUNT, /* PLL-U Active delay count */
48 PARAM_XTAL_FREQ_COUNT, /* PLL-U XTAL frequency count */
49 PARAM_DEBOUNCE_A_TIME, /* 10MS DELAY for BIAS_DEBOUNCE_A */
50 PARAM_BIAS_TIME, /* 20US DELAY AFter bias cell op */
51
52 PARAM_COUNT
53 };
54
55 /* Possible port types (dual role mode) */
56 enum dr_mode {
57 DR_MODE_NONE = 0,
58 DR_MODE_HOST, /* supports host operation */
59 DR_MODE_DEVICE, /* supports device operation */
60 DR_MODE_OTG, /* supports both */
61 };
62
63 enum usb_ctlr_type {
64 USB_CTLR_T20,
65 USB_CTLR_T30,
66 USB_CTLR_T114,
67 USB_CTLR_T210,
68
69 USB_CTRL_COUNT,
70 };
71
72 /* Information about a USB port */
73 struct fdt_usb {
74 struct ehci_ctrl ehci;
75 struct usb_ctlr *reg; /* address of registers in physical memory */
76 unsigned utmi:1; /* 1 if port has external tranceiver, else 0 */
77 unsigned ulpi:1; /* 1 if port has external ULPI transceiver */
78 unsigned enabled:1; /* 1 to enable, 0 to disable */
79 unsigned has_legacy_mode:1; /* 1 if this port has legacy mode */
80 enum usb_ctlr_type type;
81 enum usb_init_type init_type;
82 enum dr_mode dr_mode; /* dual role mode */
83 enum periph_id periph_id;/* peripheral id */
84 struct gpio_desc vbus_gpio; /* GPIO for vbus enable */
85 struct gpio_desc phy_reset_gpio; /* GPIO to reset ULPI phy */
86 };
87
88 /*
89 * This table has USB timing parameters for each Oscillator frequency we
90 * support. There are four sets of values:
91 *
92 * 1. PLLU configuration information (reference clock is osc/clk_m and
93 * PLLU-FOs are fixed at 12MHz/60MHz/480MHz).
94 *
95 * Reference frequency 13.0MHz 19.2MHz 12.0MHz 26.0MHz
96 * ----------------------------------------------------------------------
97 * DIVN 960 (0x3c0) 200 (0c8) 960 (3c0h) 960 (3c0)
98 * DIVM 13 (0d) 4 (04) 12 (0c) 26 (1a)
99 * Filter frequency (MHz) 1 4.8 6 2
100 * CPCON 1100b 0011b 1100b 1100b
101 * LFCON0 0 0 0 0
102 *
103 * 2. PLL CONFIGURATION & PARAMETERS for different clock generators:
104 *
105 * Reference frequency 13.0MHz 19.2MHz 12.0MHz 26.0MHz
106 * ---------------------------------------------------------------------------
107 * PLLU_ENABLE_DLY_COUNT 02 (0x02) 03 (03) 02 (02) 04 (04)
108 * PLLU_STABLE_COUNT 51 (33) 75 (4B) 47 (2F) 102 (66)
109 * PLL_ACTIVE_DLY_COUNT 05 (05) 06 (06) 04 (04) 09 (09)
110 * XTAL_FREQ_COUNT 127 (7F) 187 (BB) 118 (76) 254 (FE)
111 *
112 * 3. Debounce values IdDig, Avalid, Bvalid, VbusValid, VbusWakeUp, and
113 * SessEnd. Each of these signals have their own debouncer and for each of
114 * those one out of two debouncing times can be chosen (BIAS_DEBOUNCE_A or
115 * BIAS_DEBOUNCE_B).
116 *
117 * The values of DEBOUNCE_A and DEBOUNCE_B are calculated as follows:
118 * 0xffff -> No debouncing at all
119 * <n> ms = <n> *1000 / (1/19.2MHz) / 4
120 *
121 * So to program a 1 ms debounce for BIAS_DEBOUNCE_A, we have:
122 * BIAS_DEBOUNCE_A[15:0] = 1000 * 19.2 / 4 = 4800 = 0x12c0
123 *
124 * We need to use only DebounceA for BOOTROM. We don't need the DebounceB
125 * values, so we can keep those to default.
126 *
127 * 4. The 20 microsecond delay after bias cell operation.
128 */
129 static const unsigned T20_usb_pll[CLOCK_OSC_FREQ_COUNT][PARAM_COUNT] = {
130 /* DivN, DivM, DivP, CPCON, LFCON, Delays Debounce, Bias */
131 { 0x3C0, 0x0D, 0x00, 0xC, 0, 0x02, 0x33, 0x05, 0x7F, 0x7EF4, 5 },
132 { 0x0C8, 0x04, 0x00, 0x3, 0, 0x03, 0x4B, 0x06, 0xBB, 0xBB80, 7 },
133 { 0x3C0, 0x0C, 0x00, 0xC, 0, 0x02, 0x2F, 0x04, 0x76, 0x7530, 5 },
134 { 0x3C0, 0x1A, 0x00, 0xC, 0, 0x04, 0x66, 0x09, 0xFE, 0xFDE8, 9 },
135 { 0x000, 0x00, 0x00, 0x0, 0, 0x00, 0x00, 0x00, 0x00, 0x0000, 0 },
136 { 0x000, 0x00, 0x00, 0x0, 0, 0x00, 0x00, 0x00, 0x00, 0x0000, 0 }
137 };
138
139 static const unsigned T30_usb_pll[CLOCK_OSC_FREQ_COUNT][PARAM_COUNT] = {
140 /* DivN, DivM, DivP, CPCON, LFCON, Delays Debounce, Bias */
141 { 0x3C0, 0x0D, 0x00, 0xC, 1, 0x02, 0x33, 0x09, 0x7F, 0x7EF4, 5 },
142 { 0x0C8, 0x04, 0x00, 0x3, 0, 0x03, 0x4B, 0x0C, 0xBB, 0xBB80, 7 },
143 { 0x3C0, 0x0C, 0x00, 0xC, 1, 0x02, 0x2F, 0x08, 0x76, 0x7530, 5 },
144 { 0x3C0, 0x1A, 0x00, 0xC, 1, 0x04, 0x66, 0x09, 0xFE, 0xFDE8, 9 },
145 { 0x000, 0x00, 0x00, 0x0, 0, 0x00, 0x00, 0x00, 0x00, 0x0000, 0 },
146 { 0x000, 0x00, 0x00, 0x0, 0, 0x00, 0x00, 0x00, 0x00, 0x0000, 0 }
147 };
148
149 static const unsigned T114_usb_pll[CLOCK_OSC_FREQ_COUNT][PARAM_COUNT] = {
150 /* DivN, DivM, DivP, CPCON, LFCON, Delays Debounce, Bias */
151 { 0x3C0, 0x0D, 0x00, 0xC, 2, 0x02, 0x33, 0x09, 0x7F, 0x7EF4, 6 },
152 { 0x0C8, 0x04, 0x00, 0x3, 2, 0x03, 0x4B, 0x0C, 0xBB, 0xBB80, 8 },
153 { 0x3C0, 0x0C, 0x00, 0xC, 2, 0x02, 0x2F, 0x08, 0x76, 0x7530, 5 },
154 { 0x3C0, 0x1A, 0x00, 0xC, 2, 0x04, 0x66, 0x09, 0xFE, 0xFDE8, 11 },
155 { 0x000, 0x00, 0x00, 0x0, 0, 0x00, 0x00, 0x00, 0x00, 0x0000, 0 },
156 { 0x000, 0x00, 0x00, 0x0, 0, 0x00, 0x00, 0x00, 0x00, 0x0000, 0 }
157 };
158
159 /* NOTE: 13/26MHz settings are N/A for T210, so dupe 12MHz settings for now */
160 static const unsigned T210_usb_pll[CLOCK_OSC_FREQ_COUNT][PARAM_COUNT] = {
161 /* DivN, DivM, DivP, KCP, KVCO, Delays Debounce, Bias */
162 { 0x028, 0x01, 0x01, 0x0, 0, 0x02, 0x2F, 0x08, 0x76, 32500, 5 },
163 { 0x019, 0x01, 0x01, 0x0, 0, 0x03, 0x4B, 0x0C, 0xBB, 48000, 8 },
164 { 0x028, 0x01, 0x01, 0x0, 0, 0x02, 0x2F, 0x08, 0x76, 30000, 5 },
165 { 0x028, 0x01, 0x01, 0x0, 0, 0x02, 0x2F, 0x08, 0x76, 65000, 5 },
166 { 0x019, 0x02, 0x01, 0x0, 0, 0x05, 0x96, 0x18, 0x177, 96000, 15 },
167 { 0x028, 0x04, 0x01, 0x0, 0, 0x04, 0x66, 0x09, 0xFE, 120000, 20 }
168 };
169
170 /* UTMIP Idle Wait Delay */
171 static const u8 utmip_idle_wait_delay = 17;
172
173 /* UTMIP Elastic limit */
174 static const u8 utmip_elastic_limit = 16;
175
176 /* UTMIP High Speed Sync Start Delay */
177 static const u8 utmip_hs_sync_start_delay = 9;
178
179 struct fdt_usb_controller {
180 /* flag to determine whether controller supports hostpc register */
181 u32 has_hostpc:1;
182 const unsigned *pll_parameter;
183 };
184
185 static struct fdt_usb_controller fdt_usb_controllers[USB_CTRL_COUNT] = {
186 {
187 .has_hostpc = 0,
188 .pll_parameter = (const unsigned *)T20_usb_pll,
189 },
190 {
191 .has_hostpc = 1,
192 .pll_parameter = (const unsigned *)T30_usb_pll,
193 },
194 {
195 .has_hostpc = 1,
196 .pll_parameter = (const unsigned *)T114_usb_pll,
197 },
198 {
199 .has_hostpc = 1,
200 .pll_parameter = (const unsigned *)T210_usb_pll,
201 },
202 };
203
204 /*
205 * A known hardware issue where Connect Status Change bit of PORTSC register
206 * of USB1 controller will be set after Port Reset.
207 * We have to clear it in order for later device enumeration to proceed.
208 */
209 static void tegra_ehci_powerup_fixup(struct ehci_ctrl *ctrl,
210 uint32_t *status_reg, uint32_t *reg)
211 {
212 struct fdt_usb *config = ctrl->priv;
213 struct fdt_usb_controller *controller;
214
215 controller = &fdt_usb_controllers[config->type];
216 mdelay(50);
217 /* This is to avoid PORT_ENABLE bit to be cleared in "ehci-hcd.c". */
218 if (controller->has_hostpc)
219 *reg |= EHCI_PS_PE;
220
221 if (!config->has_legacy_mode)
222 return;
223 /* For EHCI_PS_CSC to be cleared in ehci_hcd.c */
224 if (ehci_readl(status_reg) & EHCI_PS_CSC)
225 *reg |= EHCI_PS_CSC;
226 }
227
228 static void tegra_ehci_set_usbmode(struct ehci_ctrl *ctrl)
229 {
230 struct fdt_usb *config = ctrl->priv;
231 struct usb_ctlr *usbctlr;
232 uint32_t tmp;
233
234 usbctlr = config->reg;
235
236 tmp = ehci_readl(&usbctlr->usb_mode);
237 tmp |= USBMODE_CM_HC;
238 ehci_writel(&usbctlr->usb_mode, tmp);
239 }
240
241 static int tegra_ehci_get_port_speed(struct ehci_ctrl *ctrl, uint32_t reg)
242 {
243 struct fdt_usb *config = ctrl->priv;
244 struct fdt_usb_controller *controller;
245 uint32_t tmp;
246 uint32_t *reg_ptr;
247
248 controller = &fdt_usb_controllers[config->type];
249 if (controller->has_hostpc) {
250 reg_ptr = (uint32_t *)((u8 *)&ctrl->hcor->or_usbcmd +
251 HOSTPC1_DEVLC);
252 tmp = ehci_readl(reg_ptr);
253 return HOSTPC1_PSPD(tmp);
254 } else
255 return PORTSC_PSPD(reg);
256 }
257
258 /* Set up VBUS for host/device mode */
259 static void set_up_vbus(struct fdt_usb *config, enum usb_init_type init)
260 {
261 /*
262 * If we are an OTG port initializing in host mode,
263 * check if remote host is driving VBus and bail out in this case.
264 */
265 if (init == USB_INIT_HOST &&
266 config->dr_mode == DR_MODE_OTG &&
267 (readl(&config->reg->phy_vbus_sensors) & VBUS_VLD_STS)) {
268 printf("tegrausb: VBUS input active; not enabling as host\n");
269 return;
270 }
271
272 if (dm_gpio_is_valid(&config->vbus_gpio)) {
273 int vbus_value;
274
275 vbus_value = (init == USB_INIT_HOST);
276 dm_gpio_set_value(&config->vbus_gpio, vbus_value);
277
278 debug("set_up_vbus: GPIO %d %d\n",
279 gpio_get_number(&config->vbus_gpio), vbus_value);
280 }
281 }
282
283 static void usbf_reset_controller(struct fdt_usb *config,
284 struct usb_ctlr *usbctlr)
285 {
286 /* Reset the USB controller with 2us delay */
287 reset_periph(config->periph_id, 2);
288
289 /*
290 * Set USB1_NO_LEGACY_MODE to 1, Registers are accessible under
291 * base address
292 */
293 if (config->has_legacy_mode)
294 setbits_le32(&usbctlr->usb1_legacy_ctrl, USB1_NO_LEGACY_MODE);
295
296 /* Put UTMIP1/3 in reset */
297 setbits_le32(&usbctlr->susp_ctrl, UTMIP_RESET);
298
299 /* Enable the UTMIP PHY */
300 if (config->utmi)
301 setbits_le32(&usbctlr->susp_ctrl, UTMIP_PHY_ENB);
302 }
303
304 static const unsigned *get_pll_timing(struct fdt_usb_controller *controller)
305 {
306 const unsigned *timing;
307
308 timing = controller->pll_parameter +
309 clock_get_osc_freq() * PARAM_COUNT;
310
311 return timing;
312 }
313
314 /* select the PHY to use with a USB controller */
315 static void init_phy_mux(struct fdt_usb *config, uint pts,
316 enum usb_init_type init)
317 {
318 struct usb_ctlr *usbctlr = config->reg;
319
320 #if defined(CONFIG_TEGRA20)
321 if (config->periph_id == PERIPH_ID_USBD) {
322 clrsetbits_le32(&usbctlr->port_sc1, PTS1_MASK,
323 pts << PTS1_SHIFT);
324 clrbits_le32(&usbctlr->port_sc1, STS1);
325 } else {
326 clrsetbits_le32(&usbctlr->port_sc1, PTS_MASK,
327 pts << PTS_SHIFT);
328 clrbits_le32(&usbctlr->port_sc1, STS);
329 }
330 #else
331 /* Set to Host mode (if applicable) after Controller Reset was done */
332 clrsetbits_le32(&usbctlr->usb_mode, USBMODE_CM_HC,
333 (init == USB_INIT_HOST) ? USBMODE_CM_HC : 0);
334 /*
335 * Select PHY interface after setting host mode.
336 * For device mode, the ordering requirement is not an issue, since
337 * only the first USB controller supports device mode, and that USB
338 * controller can only talk to a UTMI PHY, so the PHY selection is
339 * already made at reset time, so this write is a no-op.
340 */
341 clrsetbits_le32(&usbctlr->hostpc1_devlc, PTS_MASK,
342 pts << PTS_SHIFT);
343 clrbits_le32(&usbctlr->hostpc1_devlc, STS);
344 #endif
345 }
346
347 /* set up the UTMI USB controller with the parameters provided */
348 static int init_utmi_usb_controller(struct fdt_usb *config,
349 enum usb_init_type init)
350 {
351 struct fdt_usb_controller *controller;
352 u32 b_sess_valid_mask, val;
353 int loop_count;
354 const unsigned *timing;
355 struct usb_ctlr *usbctlr = config->reg;
356 struct clk_rst_ctlr *clkrst;
357 struct usb_ctlr *usb1ctlr;
358
359 clock_enable(config->periph_id);
360
361 /* Reset the usb controller */
362 usbf_reset_controller(config, usbctlr);
363
364 /* Stop crystal clock by setting UTMIP_PHY_XTAL_CLOCKEN low */
365 clrbits_le32(&usbctlr->utmip_misc_cfg1, UTMIP_PHY_XTAL_CLOCKEN);
366
367 /* Follow the crystal clock disable by >100ns delay */
368 udelay(1);
369
370 b_sess_valid_mask = (VBUS_B_SESS_VLD_SW_VALUE | VBUS_B_SESS_VLD_SW_EN);
371 clrsetbits_le32(&usbctlr->phy_vbus_sensors, b_sess_valid_mask,
372 (init == USB_INIT_DEVICE) ? b_sess_valid_mask : 0);
373
374 /*
375 * To Use the A Session Valid for cable detection logic, VBUS_WAKEUP
376 * mux must be switched to actually use a_sess_vld threshold.
377 */
378 if (config->dr_mode == DR_MODE_OTG &&
379 dm_gpio_is_valid(&config->vbus_gpio))
380 clrsetbits_le32(&usbctlr->usb1_legacy_ctrl,
381 VBUS_SENSE_CTL_MASK,
382 VBUS_SENSE_CTL_A_SESS_VLD << VBUS_SENSE_CTL_SHIFT);
383
384 controller = &fdt_usb_controllers[config->type];
385 debug("controller=%p, type=%d\n", controller, config->type);
386
387 /*
388 * PLL Delay CONFIGURATION settings. The following parameters control
389 * the bring up of the plls.
390 */
391 timing = get_pll_timing(controller);
392
393 if (!controller->has_hostpc) {
394 val = readl(&usbctlr->utmip_misc_cfg1);
395 clrsetbits_le32(&val, UTMIP_PLLU_STABLE_COUNT_MASK,
396 timing[PARAM_STABLE_COUNT] <<
397 UTMIP_PLLU_STABLE_COUNT_SHIFT);
398 clrsetbits_le32(&val, UTMIP_PLL_ACTIVE_DLY_COUNT_MASK,
399 timing[PARAM_ACTIVE_DELAY_COUNT] <<
400 UTMIP_PLL_ACTIVE_DLY_COUNT_SHIFT);
401 writel(val, &usbctlr->utmip_misc_cfg1);
402
403 /* Set PLL enable delay count and crystal frequency count */
404 val = readl(&usbctlr->utmip_pll_cfg1);
405 clrsetbits_le32(&val, UTMIP_PLLU_ENABLE_DLY_COUNT_MASK,
406 timing[PARAM_ENABLE_DELAY_COUNT] <<
407 UTMIP_PLLU_ENABLE_DLY_COUNT_SHIFT);
408 clrsetbits_le32(&val, UTMIP_XTAL_FREQ_COUNT_MASK,
409 timing[PARAM_XTAL_FREQ_COUNT] <<
410 UTMIP_XTAL_FREQ_COUNT_SHIFT);
411 writel(val, &usbctlr->utmip_pll_cfg1);
412 } else {
413 clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
414
415 val = readl(&clkrst->crc_utmip_pll_cfg2);
416 clrsetbits_le32(&val, UTMIP_PLLU_STABLE_COUNT_MASK,
417 timing[PARAM_STABLE_COUNT] <<
418 UTMIP_PLLU_STABLE_COUNT_SHIFT);
419 clrsetbits_le32(&val, UTMIP_PLL_ACTIVE_DLY_COUNT_MASK,
420 timing[PARAM_ACTIVE_DELAY_COUNT] <<
421 UTMIP_PLL_ACTIVE_DLY_COUNT_SHIFT);
422 writel(val, &clkrst->crc_utmip_pll_cfg2);
423
424 /* Set PLL enable delay count and crystal frequency count */
425 val = readl(&clkrst->crc_utmip_pll_cfg1);
426 clrsetbits_le32(&val, UTMIP_PLLU_ENABLE_DLY_COUNT_MASK,
427 timing[PARAM_ENABLE_DELAY_COUNT] <<
428 UTMIP_PLLU_ENABLE_DLY_COUNT_SHIFT);
429 clrsetbits_le32(&val, UTMIP_XTAL_FREQ_COUNT_MASK,
430 timing[PARAM_XTAL_FREQ_COUNT] <<
431 UTMIP_XTAL_FREQ_COUNT_SHIFT);
432 writel(val, &clkrst->crc_utmip_pll_cfg1);
433
434 /* Disable Power Down state for PLL */
435 clrbits_le32(&clkrst->crc_utmip_pll_cfg1,
436 PLLU_POWERDOWN | PLL_ENABLE_POWERDOWN |
437 PLL_ACTIVE_POWERDOWN);
438
439 /* Recommended PHY settings for EYE diagram */
440 val = readl(&usbctlr->utmip_xcvr_cfg0);
441 clrsetbits_le32(&val, UTMIP_XCVR_SETUP_MASK,
442 0x4 << UTMIP_XCVR_SETUP_SHIFT);
443 clrsetbits_le32(&val, UTMIP_XCVR_SETUP_MSB_MASK,
444 0x3 << UTMIP_XCVR_SETUP_MSB_SHIFT);
445 clrsetbits_le32(&val, UTMIP_XCVR_HSSLEW_MSB_MASK,
446 0x8 << UTMIP_XCVR_HSSLEW_MSB_SHIFT);
447 writel(val, &usbctlr->utmip_xcvr_cfg0);
448 clrsetbits_le32(&usbctlr->utmip_xcvr_cfg1,
449 UTMIP_XCVR_TERM_RANGE_ADJ_MASK,
450 0x7 << UTMIP_XCVR_TERM_RANGE_ADJ_SHIFT);
451
452 /* Some registers can be controlled from USB1 only. */
453 if (config->periph_id != PERIPH_ID_USBD) {
454 clock_enable(PERIPH_ID_USBD);
455 /* Disable Reset if in Reset state */
456 reset_set_enable(PERIPH_ID_USBD, 0);
457 }
458 usb1ctlr = (struct usb_ctlr *)
459 ((unsigned long)config->reg & USB1_ADDR_MASK);
460 val = readl(&usb1ctlr->utmip_bias_cfg0);
461 setbits_le32(&val, UTMIP_HSDISCON_LEVEL_MSB);
462 clrsetbits_le32(&val, UTMIP_HSDISCON_LEVEL_MASK,
463 0x1 << UTMIP_HSDISCON_LEVEL_SHIFT);
464 clrsetbits_le32(&val, UTMIP_HSSQUELCH_LEVEL_MASK,
465 0x2 << UTMIP_HSSQUELCH_LEVEL_SHIFT);
466 writel(val, &usb1ctlr->utmip_bias_cfg0);
467
468 /* Miscellaneous setting mentioned in Programming Guide */
469 clrbits_le32(&usbctlr->utmip_misc_cfg0,
470 UTMIP_SUSPEND_EXIT_ON_EDGE);
471 }
472
473 /* Setting the tracking length time */
474 clrsetbits_le32(&usbctlr->utmip_bias_cfg1,
475 UTMIP_BIAS_PDTRK_COUNT_MASK,
476 timing[PARAM_BIAS_TIME] << UTMIP_BIAS_PDTRK_COUNT_SHIFT);
477
478 /* Program debounce time for VBUS to become valid */
479 clrsetbits_le32(&usbctlr->utmip_debounce_cfg0,
480 UTMIP_DEBOUNCE_CFG0_MASK,
481 timing[PARAM_DEBOUNCE_A_TIME] << UTMIP_DEBOUNCE_CFG0_SHIFT);
482
483 if (timing[PARAM_DEBOUNCE_A_TIME] > 0xFFFF) {
484 clrsetbits_le32(&usbctlr->utmip_debounce_cfg0,
485 UTMIP_DEBOUNCE_CFG0_MASK,
486 (timing[PARAM_DEBOUNCE_A_TIME] >> 1)
487 << UTMIP_DEBOUNCE_CFG0_SHIFT);
488 clrsetbits_le32(&usbctlr->utmip_bias_cfg1,
489 UTMIP_BIAS_DEBOUNCE_TIMESCALE_MASK,
490 1 << UTMIP_BIAS_DEBOUNCE_TIMESCALE_SHIFT);
491 }
492
493 setbits_le32(&usbctlr->utmip_tx_cfg0, UTMIP_FS_PREAMBLE_J);
494
495 /* Disable battery charge enabling bit */
496 setbits_le32(&usbctlr->utmip_bat_chrg_cfg0, UTMIP_PD_CHRG);
497
498 clrbits_le32(&usbctlr->utmip_xcvr_cfg0, UTMIP_XCVR_LSBIAS_SE);
499 setbits_le32(&usbctlr->utmip_spare_cfg0, FUSE_SETUP_SEL);
500
501 /*
502 * Configure the UTMIP_IDLE_WAIT and UTMIP_ELASTIC_LIMIT
503 * Setting these fields, together with default values of the
504 * other fields, results in programming the registers below as
505 * follows:
506 * UTMIP_HSRX_CFG0 = 0x9168c000
507 * UTMIP_HSRX_CFG1 = 0x13
508 */
509
510 /* Set PLL enable delay count and Crystal frequency count */
511 val = readl(&usbctlr->utmip_hsrx_cfg0);
512 clrsetbits_le32(&val, UTMIP_IDLE_WAIT_MASK,
513 utmip_idle_wait_delay << UTMIP_IDLE_WAIT_SHIFT);
514 clrsetbits_le32(&val, UTMIP_ELASTIC_LIMIT_MASK,
515 utmip_elastic_limit << UTMIP_ELASTIC_LIMIT_SHIFT);
516 writel(val, &usbctlr->utmip_hsrx_cfg0);
517
518 /* Configure the UTMIP_HS_SYNC_START_DLY */
519 clrsetbits_le32(&usbctlr->utmip_hsrx_cfg1,
520 UTMIP_HS_SYNC_START_DLY_MASK,
521 utmip_hs_sync_start_delay << UTMIP_HS_SYNC_START_DLY_SHIFT);
522
523 /* Preceed the crystal clock disable by >100ns delay. */
524 udelay(1);
525
526 /* Resuscitate crystal clock by setting UTMIP_PHY_XTAL_CLOCKEN */
527 setbits_le32(&usbctlr->utmip_misc_cfg1, UTMIP_PHY_XTAL_CLOCKEN);
528
529 if (controller->has_hostpc) {
530 if (config->periph_id == PERIPH_ID_USBD)
531 clrbits_le32(&clkrst->crc_utmip_pll_cfg2,
532 UTMIP_FORCE_PD_SAMP_A_POWERDOWN);
533 if (config->periph_id == PERIPH_ID_USB2)
534 clrbits_le32(&clkrst->crc_utmip_pll_cfg2,
535 UTMIP_FORCE_PD_SAMP_B_POWERDOWN);
536 if (config->periph_id == PERIPH_ID_USB3)
537 clrbits_le32(&clkrst->crc_utmip_pll_cfg2,
538 UTMIP_FORCE_PD_SAMP_C_POWERDOWN);
539 }
540 /* Finished the per-controller init. */
541
542 /* De-assert UTMIP_RESET to bring out of reset. */
543 clrbits_le32(&usbctlr->susp_ctrl, UTMIP_RESET);
544
545 /* Wait for the phy clock to become valid in 100 ms */
546 for (loop_count = 100000; loop_count != 0; loop_count--) {
547 if (readl(&usbctlr->susp_ctrl) & USB_PHY_CLK_VALID)
548 break;
549 udelay(1);
550 }
551 if (!loop_count)
552 return -ETIMEDOUT;
553
554 /* Disable ICUSB FS/LS transceiver */
555 clrbits_le32(&usbctlr->icusb_ctrl, IC_ENB1);
556
557 /* Select UTMI parallel interface */
558 init_phy_mux(config, PTS_UTMI, init);
559
560 /* Deassert power down state */
561 clrbits_le32(&usbctlr->utmip_xcvr_cfg0, UTMIP_FORCE_PD_POWERDOWN |
562 UTMIP_FORCE_PD2_POWERDOWN | UTMIP_FORCE_PDZI_POWERDOWN);
563 clrbits_le32(&usbctlr->utmip_xcvr_cfg1, UTMIP_FORCE_PDDISC_POWERDOWN |
564 UTMIP_FORCE_PDCHRP_POWERDOWN | UTMIP_FORCE_PDDR_POWERDOWN);
565
566 if (controller->has_hostpc) {
567 /*
568 * BIAS Pad Power Down is common among all 3 USB
569 * controllers and can be controlled from USB1 only.
570 */
571 usb1ctlr = (struct usb_ctlr *)
572 ((unsigned long)config->reg & USB1_ADDR_MASK);
573 clrbits_le32(&usb1ctlr->utmip_bias_cfg0, UTMIP_BIASPD);
574 udelay(25);
575 clrbits_le32(&usb1ctlr->utmip_bias_cfg1,
576 UTMIP_FORCE_PDTRK_POWERDOWN);
577 }
578 return 0;
579 }
580
581 #ifdef CONFIG_USB_ULPI
582 /* if board file does not set a ULPI reference frequency we default to 24MHz */
583 #ifndef CONFIG_ULPI_REF_CLK
584 #define CONFIG_ULPI_REF_CLK 24000000
585 #endif
586
587 /* set up the ULPI USB controller with the parameters provided */
588 static int init_ulpi_usb_controller(struct fdt_usb *config,
589 enum usb_init_type init)
590 {
591 u32 val;
592 int loop_count;
593 struct ulpi_viewport ulpi_vp;
594 struct usb_ctlr *usbctlr = config->reg;
595 int ret;
596
597 /* set up ULPI reference clock on pllp_out4 */
598 clock_enable(PERIPH_ID_DEV2_OUT);
599 clock_set_pllout(CLOCK_ID_PERIPH, PLL_OUT4, CONFIG_ULPI_REF_CLK);
600
601 /* reset ULPI phy */
602 if (dm_gpio_is_valid(&config->phy_reset_gpio)) {
603 dm_gpio_set_value(&config->phy_reset_gpio, 0);
604 mdelay(5);
605 dm_gpio_set_value(&config->phy_reset_gpio, 1);
606 }
607
608 /* Reset the usb controller */
609 clock_enable(config->periph_id);
610 usbf_reset_controller(config, usbctlr);
611
612 /* enable pinmux bypass */
613 setbits_le32(&usbctlr->ulpi_timing_ctrl_0,
614 ULPI_CLKOUT_PINMUX_BYP | ULPI_OUTPUT_PINMUX_BYP);
615
616 /* Select ULPI parallel interface */
617 init_phy_mux(config, PTS_ULPI, init);
618
619 /* enable ULPI transceiver */
620 setbits_le32(&usbctlr->susp_ctrl, ULPI_PHY_ENB);
621
622 /* configure ULPI transceiver timings */
623 val = 0;
624 writel(val, &usbctlr->ulpi_timing_ctrl_1);
625
626 val |= ULPI_DATA_TRIMMER_SEL(4);
627 val |= ULPI_STPDIRNXT_TRIMMER_SEL(4);
628 val |= ULPI_DIR_TRIMMER_SEL(4);
629 writel(val, &usbctlr->ulpi_timing_ctrl_1);
630 udelay(10);
631
632 val |= ULPI_DATA_TRIMMER_LOAD;
633 val |= ULPI_STPDIRNXT_TRIMMER_LOAD;
634 val |= ULPI_DIR_TRIMMER_LOAD;
635 writel(val, &usbctlr->ulpi_timing_ctrl_1);
636
637 /* set up phy for host operation with external vbus supply */
638 ulpi_vp.port_num = 0;
639 ulpi_vp.viewport_addr = (u32)&usbctlr->ulpi_viewport;
640
641 ret = ulpi_init(&ulpi_vp);
642 if (ret) {
643 printf("Tegra ULPI viewport init failed\n");
644 return ret;
645 }
646
647 ulpi_set_vbus(&ulpi_vp, 1, 1);
648 ulpi_set_vbus_indicator(&ulpi_vp, 1, 1, 0);
649
650 /* enable wakeup events */
651 setbits_le32(&usbctlr->port_sc1, WKCN | WKDS | WKOC);
652
653 /* Enable and wait for the phy clock to become valid in 100 ms */
654 setbits_le32(&usbctlr->susp_ctrl, USB_SUSP_CLR);
655 for (loop_count = 100000; loop_count != 0; loop_count--) {
656 if (readl(&usbctlr->susp_ctrl) & USB_PHY_CLK_VALID)
657 break;
658 udelay(1);
659 }
660 if (!loop_count)
661 return -ETIMEDOUT;
662 clrbits_le32(&usbctlr->susp_ctrl, USB_SUSP_CLR);
663
664 return 0;
665 }
666 #else
667 static int init_ulpi_usb_controller(struct fdt_usb *config,
668 enum usb_init_type init)
669 {
670 printf("No code to set up ULPI controller, please enable"
671 "CONFIG_USB_ULPI and CONFIG_USB_ULPI_VIEWPORT");
672 return -ENOSYS;
673 }
674 #endif
675
676 static void config_clock(const u32 timing[])
677 {
678 debug("%s: DIVM = %d, DIVN = %d, DIVP = %d, cpcon/lfcon = %d/%d\n",
679 __func__, timing[PARAM_DIVM], timing[PARAM_DIVN],
680 timing[PARAM_DIVP], timing[PARAM_CPCON], timing[PARAM_LFCON]);
681
682 clock_start_pll(CLOCK_ID_USB,
683 timing[PARAM_DIVM], timing[PARAM_DIVN], timing[PARAM_DIVP],
684 timing[PARAM_CPCON], timing[PARAM_LFCON]);
685 }
686
687 static int fdt_decode_usb(struct udevice *dev, struct fdt_usb *config)
688 {
689 const void *blob = gd->fdt_blob;
690 int node = dev->of_offset;
691 const char *phy, *mode;
692
693 config->reg = (struct usb_ctlr *)dev_get_addr(dev);
694 mode = fdt_getprop(blob, node, "dr_mode", NULL);
695 if (mode) {
696 if (0 == strcmp(mode, "host"))
697 config->dr_mode = DR_MODE_HOST;
698 else if (0 == strcmp(mode, "peripheral"))
699 config->dr_mode = DR_MODE_DEVICE;
700 else if (0 == strcmp(mode, "otg"))
701 config->dr_mode = DR_MODE_OTG;
702 else {
703 debug("%s: Cannot decode dr_mode '%s'\n", __func__,
704 mode);
705 return -EINVAL;
706 }
707 } else {
708 config->dr_mode = DR_MODE_HOST;
709 }
710
711 phy = fdt_getprop(blob, node, "phy_type", NULL);
712 config->utmi = phy && 0 == strcmp("utmi", phy);
713 config->ulpi = phy && 0 == strcmp("ulpi", phy);
714 config->enabled = fdtdec_get_is_enabled(blob, node);
715 config->has_legacy_mode = fdtdec_get_bool(blob, node,
716 "nvidia,has-legacy-mode");
717 config->periph_id = clock_decode_periph_id(blob, node);
718 if (config->periph_id == PERIPH_ID_NONE) {
719 debug("%s: Missing/invalid peripheral ID\n", __func__);
720 return -EINVAL;
721 }
722 gpio_request_by_name_nodev(blob, node, "nvidia,vbus-gpio", 0,
723 &config->vbus_gpio, GPIOD_IS_OUT);
724 gpio_request_by_name_nodev(blob, node, "nvidia,phy-reset-gpio", 0,
725 &config->phy_reset_gpio, GPIOD_IS_OUT);
726 debug("enabled=%d, legacy_mode=%d, utmi=%d, ulpi=%d, periph_id=%d, "
727 "vbus=%d, phy_reset=%d, dr_mode=%d\n",
728 config->enabled, config->has_legacy_mode, config->utmi,
729 config->ulpi, config->periph_id,
730 gpio_get_number(&config->vbus_gpio),
731 gpio_get_number(&config->phy_reset_gpio), config->dr_mode);
732
733 return 0;
734 }
735
736 int usb_common_init(struct fdt_usb *config, enum usb_init_type init)
737 {
738 int ret = 0;
739
740 switch (init) {
741 case USB_INIT_HOST:
742 switch (config->dr_mode) {
743 case DR_MODE_HOST:
744 case DR_MODE_OTG:
745 break;
746 default:
747 printf("tegrausb: Invalid dr_mode %d for host mode\n",
748 config->dr_mode);
749 return -1;
750 }
751 break;
752 case USB_INIT_DEVICE:
753 if (config->periph_id != PERIPH_ID_USBD) {
754 printf("tegrausb: Device mode only supported on first USB controller\n");
755 return -1;
756 }
757 if (!config->utmi) {
758 printf("tegrausb: Device mode only supported with UTMI PHY\n");
759 return -1;
760 }
761 switch (config->dr_mode) {
762 case DR_MODE_DEVICE:
763 case DR_MODE_OTG:
764 break;
765 default:
766 printf("tegrausb: Invalid dr_mode %d for device mode\n",
767 config->dr_mode);
768 return -1;
769 }
770 break;
771 default:
772 printf("tegrausb: Unknown USB_INIT_* %d\n", init);
773 return -1;
774 }
775
776 debug("%d, %d\n", config->utmi, config->ulpi);
777 if (config->utmi)
778 ret = init_utmi_usb_controller(config, init);
779 else if (config->ulpi)
780 ret = init_ulpi_usb_controller(config, init);
781 if (ret)
782 return ret;
783
784 set_up_vbus(config, init);
785
786 config->init_type = init;
787
788 return 0;
789 }
790
791 void usb_common_uninit(struct fdt_usb *priv)
792 {
793 struct usb_ctlr *usbctlr;
794
795 usbctlr = priv->reg;
796
797 /* Stop controller */
798 writel(0, &usbctlr->usb_cmd);
799 udelay(1000);
800
801 /* Initiate controller reset */
802 writel(2, &usbctlr->usb_cmd);
803 udelay(1000);
804 }
805
806 static const struct ehci_ops tegra_ehci_ops = {
807 .set_usb_mode = tegra_ehci_set_usbmode,
808 .get_port_speed = tegra_ehci_get_port_speed,
809 .powerup_fixup = tegra_ehci_powerup_fixup,
810 };
811
812 static int ehci_usb_ofdata_to_platdata(struct udevice *dev)
813 {
814 struct fdt_usb *priv = dev_get_priv(dev);
815 int ret;
816
817 ret = fdt_decode_usb(dev, priv);
818 if (ret)
819 return ret;
820
821 priv->type = dev_get_driver_data(dev);
822
823 return 0;
824 }
825
826 static int ehci_usb_probe(struct udevice *dev)
827 {
828 struct usb_platdata *plat = dev_get_platdata(dev);
829 struct fdt_usb *priv = dev_get_priv(dev);
830 struct ehci_hccr *hccr;
831 struct ehci_hcor *hcor;
832 static bool clk_done;
833 int ret;
834
835 ret = usb_common_init(priv, plat->init_type);
836 if (ret)
837 return ret;
838 hccr = (struct ehci_hccr *)&priv->reg->cap_length;
839 hcor = (struct ehci_hcor *)&priv->reg->usb_cmd;
840 if (!clk_done) {
841 config_clock(get_pll_timing(&fdt_usb_controllers[priv->type]));
842 clk_done = true;
843 }
844
845 return ehci_register(dev, hccr, hcor, &tegra_ehci_ops, 0,
846 plat->init_type);
847 }
848
849 static const struct udevice_id ehci_usb_ids[] = {
850 { .compatible = "nvidia,tegra20-ehci", .data = USB_CTLR_T20 },
851 { .compatible = "nvidia,tegra30-ehci", .data = USB_CTLR_T30 },
852 { .compatible = "nvidia,tegra114-ehci", .data = USB_CTLR_T114 },
853 { .compatible = "nvidia,tegra210-ehci", .data = USB_CTLR_T210 },
854 { }
855 };
856
857 U_BOOT_DRIVER(usb_ehci) = {
858 .name = "ehci_tegra",
859 .id = UCLASS_USB,
860 .of_match = ehci_usb_ids,
861 .ofdata_to_platdata = ehci_usb_ofdata_to_platdata,
862 .probe = ehci_usb_probe,
863 .remove = ehci_deregister,
864 .ops = &ehci_usb_ops,
865 .platdata_auto_alloc_size = sizeof(struct usb_platdata),
866 .priv_auto_alloc_size = sizeof(struct fdt_usb),
867 .flags = DM_FLAG_ALLOC_PRIV_DMA,
868 };
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