1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 2011 The Chromium OS Authors.
4 * Copyright (c) 2009-2015 NVIDIA Corporation
5 * Copyright (c) 2013 Lucas Stach
11 #include <linux/errno.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>
19 #include <linux/libfdt.h>
23 #define USB1_ADDR_MASK 0xFFFF0000
25 #define HOSTPC1_DEVLC 0x84
26 #define HOSTPC1_PSPD(x) (((x) >> 25) & 0x3)
28 #ifdef CONFIG_USB_ULPI
29 #ifndef CONFIG_USB_ULPI_VIEWPORT
30 #error "To use CONFIG_USB_ULPI on Tegra Boards you have to also \
31 define CONFIG_USB_ULPI_VIEWPORT"
35 /* Parameters we need for USB */
37 PARAM_DIVN, /* PLL FEEDBACK DIVIDer */
38 PARAM_DIVM, /* PLL INPUT DIVIDER */
39 PARAM_DIVP, /* POST DIVIDER (2^N) */
40 PARAM_CPCON, /* BASE PLLC CHARGE Pump setup ctrl */
41 PARAM_LFCON, /* BASE PLLC LOOP FILter setup ctrl */
42 PARAM_ENABLE_DELAY_COUNT, /* PLL-U Enable Delay Count */
43 PARAM_STABLE_COUNT, /* PLL-U STABLE count */
44 PARAM_ACTIVE_DELAY_COUNT, /* PLL-U Active delay count */
45 PARAM_XTAL_FREQ_COUNT, /* PLL-U XTAL frequency count */
46 PARAM_DEBOUNCE_A_TIME, /* 10MS DELAY for BIAS_DEBOUNCE_A */
47 PARAM_BIAS_TIME, /* 20US DELAY AFter bias cell op */
52 /* Possible port types (dual role mode) */
55 DR_MODE_HOST, /* supports host operation */
56 DR_MODE_DEVICE, /* supports device operation */
57 DR_MODE_OTG, /* supports both */
69 /* Information about a USB port */
71 struct ehci_ctrl ehci;
72 struct usb_ctlr *reg; /* address of registers in physical memory */
73 unsigned utmi:1; /* 1 if port has external tranceiver, else 0 */
74 unsigned ulpi:1; /* 1 if port has external ULPI transceiver */
75 unsigned enabled:1; /* 1 to enable, 0 to disable */
76 unsigned has_legacy_mode:1; /* 1 if this port has legacy mode */
77 enum usb_ctlr_type type;
78 enum usb_init_type init_type;
79 enum dr_mode dr_mode; /* dual role mode */
80 enum periph_id periph_id;/* peripheral id */
81 struct gpio_desc vbus_gpio; /* GPIO for vbus enable */
82 struct gpio_desc phy_reset_gpio; /* GPIO to reset ULPI phy */
86 * This table has USB timing parameters for each Oscillator frequency we
87 * support. There are four sets of values:
89 * 1. PLLU configuration information (reference clock is osc/clk_m and
90 * PLLU-FOs are fixed at 12MHz/60MHz/480MHz).
92 * Reference frequency 13.0MHz 19.2MHz 12.0MHz 26.0MHz
93 * ----------------------------------------------------------------------
94 * DIVN 960 (0x3c0) 200 (0c8) 960 (3c0h) 960 (3c0)
95 * DIVM 13 (0d) 4 (04) 12 (0c) 26 (1a)
96 * Filter frequency (MHz) 1 4.8 6 2
97 * CPCON 1100b 0011b 1100b 1100b
100 * 2. PLL CONFIGURATION & PARAMETERS for different clock generators:
102 * Reference frequency 13.0MHz 19.2MHz 12.0MHz 26.0MHz
103 * ---------------------------------------------------------------------------
104 * PLLU_ENABLE_DLY_COUNT 02 (0x02) 03 (03) 02 (02) 04 (04)
105 * PLLU_STABLE_COUNT 51 (33) 75 (4B) 47 (2F) 102 (66)
106 * PLL_ACTIVE_DLY_COUNT 05 (05) 06 (06) 04 (04) 09 (09)
107 * XTAL_FREQ_COUNT 127 (7F) 187 (BB) 118 (76) 254 (FE)
109 * 3. Debounce values IdDig, Avalid, Bvalid, VbusValid, VbusWakeUp, and
110 * SessEnd. Each of these signals have their own debouncer and for each of
111 * those one out of two debouncing times can be chosen (BIAS_DEBOUNCE_A or
114 * The values of DEBOUNCE_A and DEBOUNCE_B are calculated as follows:
115 * 0xffff -> No debouncing at all
116 * <n> ms = <n> *1000 / (1/19.2MHz) / 4
118 * So to program a 1 ms debounce for BIAS_DEBOUNCE_A, we have:
119 * BIAS_DEBOUNCE_A[15:0] = 1000 * 19.2 / 4 = 4800 = 0x12c0
121 * We need to use only DebounceA for BOOTROM. We don't need the DebounceB
122 * values, so we can keep those to default.
124 * 4. The 20 microsecond delay after bias cell operation.
126 static const unsigned T20_usb_pll[CLOCK_OSC_FREQ_COUNT][PARAM_COUNT] = {
127 /* DivN, DivM, DivP, CPCON, LFCON, Delays Debounce, Bias */
128 { 0x3C0, 0x0D, 0x00, 0xC, 0, 0x02, 0x33, 0x05, 0x7F, 0x7EF4, 5 },
129 { 0x0C8, 0x04, 0x00, 0x3, 0, 0x03, 0x4B, 0x06, 0xBB, 0xBB80, 7 },
130 { 0x3C0, 0x0C, 0x00, 0xC, 0, 0x02, 0x2F, 0x04, 0x76, 0x7530, 5 },
131 { 0x3C0, 0x1A, 0x00, 0xC, 0, 0x04, 0x66, 0x09, 0xFE, 0xFDE8, 9 },
132 { 0x000, 0x00, 0x00, 0x0, 0, 0x00, 0x00, 0x00, 0x00, 0x0000, 0 },
133 { 0x000, 0x00, 0x00, 0x0, 0, 0x00, 0x00, 0x00, 0x00, 0x0000, 0 }
136 static const unsigned T30_usb_pll[CLOCK_OSC_FREQ_COUNT][PARAM_COUNT] = {
137 /* DivN, DivM, DivP, CPCON, LFCON, Delays Debounce, Bias */
138 { 0x3C0, 0x0D, 0x00, 0xC, 1, 0x02, 0x33, 0x09, 0x7F, 0x7EF4, 5 },
139 { 0x0C8, 0x04, 0x00, 0x3, 0, 0x03, 0x4B, 0x0C, 0xBB, 0xBB80, 7 },
140 { 0x3C0, 0x0C, 0x00, 0xC, 1, 0x02, 0x2F, 0x08, 0x76, 0x7530, 5 },
141 { 0x3C0, 0x1A, 0x00, 0xC, 1, 0x04, 0x66, 0x09, 0xFE, 0xFDE8, 9 },
142 { 0x000, 0x00, 0x00, 0x0, 0, 0x00, 0x00, 0x00, 0x00, 0x0000, 0 },
143 { 0x000, 0x00, 0x00, 0x0, 0, 0x00, 0x00, 0x00, 0x00, 0x0000, 0 }
146 static const unsigned T114_usb_pll[CLOCK_OSC_FREQ_COUNT][PARAM_COUNT] = {
147 /* DivN, DivM, DivP, CPCON, LFCON, Delays Debounce, Bias */
148 { 0x3C0, 0x0D, 0x00, 0xC, 2, 0x02, 0x33, 0x09, 0x7F, 0x7EF4, 6 },
149 { 0x0C8, 0x04, 0x00, 0x3, 2, 0x03, 0x4B, 0x0C, 0xBB, 0xBB80, 8 },
150 { 0x3C0, 0x0C, 0x00, 0xC, 2, 0x02, 0x2F, 0x08, 0x76, 0x7530, 5 },
151 { 0x3C0, 0x1A, 0x00, 0xC, 2, 0x04, 0x66, 0x09, 0xFE, 0xFDE8, 11 },
152 { 0x000, 0x00, 0x00, 0x0, 0, 0x00, 0x00, 0x00, 0x00, 0x0000, 0 },
153 { 0x000, 0x00, 0x00, 0x0, 0, 0x00, 0x00, 0x00, 0x00, 0x0000, 0 }
156 /* NOTE: 13/26MHz settings are N/A for T210, so dupe 12MHz settings for now */
157 static const unsigned T210_usb_pll[CLOCK_OSC_FREQ_COUNT][PARAM_COUNT] = {
158 /* DivN, DivM, DivP, KCP, KVCO, Delays Debounce, Bias */
159 { 0x028, 0x01, 0x01, 0x0, 0, 0x02, 0x2F, 0x08, 0x76, 32500, 5 },
160 { 0x019, 0x01, 0x01, 0x0, 0, 0x03, 0x4B, 0x0C, 0xBB, 48000, 8 },
161 { 0x028, 0x01, 0x01, 0x0, 0, 0x02, 0x2F, 0x08, 0x76, 30000, 5 },
162 { 0x028, 0x01, 0x01, 0x0, 0, 0x02, 0x2F, 0x08, 0x76, 65000, 5 },
163 { 0x019, 0x02, 0x01, 0x0, 0, 0x05, 0x96, 0x18, 0x177, 96000, 15 },
164 { 0x028, 0x04, 0x01, 0x0, 0, 0x04, 0x66, 0x09, 0xFE, 120000, 20 }
167 /* UTMIP Idle Wait Delay */
168 static const u8 utmip_idle_wait_delay = 17;
170 /* UTMIP Elastic limit */
171 static const u8 utmip_elastic_limit = 16;
173 /* UTMIP High Speed Sync Start Delay */
174 static const u8 utmip_hs_sync_start_delay = 9;
176 struct fdt_usb_controller {
177 /* flag to determine whether controller supports hostpc register */
179 const unsigned *pll_parameter;
182 static struct fdt_usb_controller fdt_usb_controllers[USB_CTRL_COUNT] = {
185 .pll_parameter = (const unsigned *)T20_usb_pll,
189 .pll_parameter = (const unsigned *)T30_usb_pll,
193 .pll_parameter = (const unsigned *)T114_usb_pll,
197 .pll_parameter = (const unsigned *)T210_usb_pll,
202 * A known hardware issue where Connect Status Change bit of PORTSC register
203 * of USB1 controller will be set after Port Reset.
204 * We have to clear it in order for later device enumeration to proceed.
206 static void tegra_ehci_powerup_fixup(struct ehci_ctrl *ctrl,
207 uint32_t *status_reg, uint32_t *reg)
209 struct fdt_usb *config = ctrl->priv;
210 struct fdt_usb_controller *controller;
212 controller = &fdt_usb_controllers[config->type];
214 /* This is to avoid PORT_ENABLE bit to be cleared in "ehci-hcd.c". */
215 if (controller->has_hostpc)
218 if (!config->has_legacy_mode)
220 /* For EHCI_PS_CSC to be cleared in ehci_hcd.c */
221 if (ehci_readl(status_reg) & EHCI_PS_CSC)
225 static void tegra_ehci_set_usbmode(struct ehci_ctrl *ctrl)
227 struct fdt_usb *config = ctrl->priv;
228 struct usb_ctlr *usbctlr;
231 usbctlr = config->reg;
233 tmp = ehci_readl(&usbctlr->usb_mode);
234 tmp |= USBMODE_CM_HC;
235 ehci_writel(&usbctlr->usb_mode, tmp);
238 static int tegra_ehci_get_port_speed(struct ehci_ctrl *ctrl, uint32_t reg)
240 struct fdt_usb *config = ctrl->priv;
241 struct fdt_usb_controller *controller;
245 controller = &fdt_usb_controllers[config->type];
246 if (controller->has_hostpc) {
247 reg_ptr = (uint32_t *)((u8 *)&ctrl->hcor->or_usbcmd +
249 tmp = ehci_readl(reg_ptr);
250 return HOSTPC1_PSPD(tmp);
252 return PORTSC_PSPD(reg);
255 /* Set up VBUS for host/device mode */
256 static void set_up_vbus(struct fdt_usb *config, enum usb_init_type init)
259 * If we are an OTG port initializing in host mode,
260 * check if remote host is driving VBus and bail out in this case.
262 if (init == USB_INIT_HOST &&
263 config->dr_mode == DR_MODE_OTG &&
264 (readl(&config->reg->phy_vbus_sensors) & VBUS_VLD_STS)) {
265 printf("tegrausb: VBUS input active; not enabling as host\n");
269 if (dm_gpio_is_valid(&config->vbus_gpio)) {
272 vbus_value = (init == USB_INIT_HOST);
273 dm_gpio_set_value(&config->vbus_gpio, vbus_value);
275 debug("set_up_vbus: GPIO %d %d\n",
276 gpio_get_number(&config->vbus_gpio), vbus_value);
280 static void usbf_reset_controller(struct fdt_usb *config,
281 struct usb_ctlr *usbctlr)
283 /* Reset the USB controller with 2us delay */
284 reset_periph(config->periph_id, 2);
287 * Set USB1_NO_LEGACY_MODE to 1, Registers are accessible under
290 if (config->has_legacy_mode)
291 setbits_le32(&usbctlr->usb1_legacy_ctrl, USB1_NO_LEGACY_MODE);
293 /* Put UTMIP1/3 in reset */
294 setbits_le32(&usbctlr->susp_ctrl, UTMIP_RESET);
296 /* Enable the UTMIP PHY */
298 setbits_le32(&usbctlr->susp_ctrl, UTMIP_PHY_ENB);
301 static const unsigned *get_pll_timing(struct fdt_usb_controller *controller)
303 const unsigned *timing;
305 timing = controller->pll_parameter +
306 clock_get_osc_freq() * PARAM_COUNT;
311 /* select the PHY to use with a USB controller */
312 static void init_phy_mux(struct fdt_usb *config, uint pts,
313 enum usb_init_type init)
315 struct usb_ctlr *usbctlr = config->reg;
317 #if defined(CONFIG_TEGRA20)
318 if (config->periph_id == PERIPH_ID_USBD) {
319 clrsetbits_le32(&usbctlr->port_sc1, PTS1_MASK,
321 clrbits_le32(&usbctlr->port_sc1, STS1);
323 clrsetbits_le32(&usbctlr->port_sc1, PTS_MASK,
325 clrbits_le32(&usbctlr->port_sc1, STS);
328 /* Set to Host mode (if applicable) after Controller Reset was done */
329 clrsetbits_le32(&usbctlr->usb_mode, USBMODE_CM_HC,
330 (init == USB_INIT_HOST) ? USBMODE_CM_HC : 0);
332 * Select PHY interface after setting host mode.
333 * For device mode, the ordering requirement is not an issue, since
334 * only the first USB controller supports device mode, and that USB
335 * controller can only talk to a UTMI PHY, so the PHY selection is
336 * already made at reset time, so this write is a no-op.
338 clrsetbits_le32(&usbctlr->hostpc1_devlc, PTS_MASK,
340 clrbits_le32(&usbctlr->hostpc1_devlc, STS);
344 /* set up the UTMI USB controller with the parameters provided */
345 static int init_utmi_usb_controller(struct fdt_usb *config,
346 enum usb_init_type init)
348 struct fdt_usb_controller *controller;
349 u32 b_sess_valid_mask, val;
351 const unsigned *timing;
352 struct usb_ctlr *usbctlr = config->reg;
353 struct clk_rst_ctlr *clkrst;
354 struct usb_ctlr *usb1ctlr;
356 clock_enable(config->periph_id);
358 /* Reset the usb controller */
359 usbf_reset_controller(config, usbctlr);
361 /* Stop crystal clock by setting UTMIP_PHY_XTAL_CLOCKEN low */
362 clrbits_le32(&usbctlr->utmip_misc_cfg1, UTMIP_PHY_XTAL_CLOCKEN);
364 /* Follow the crystal clock disable by >100ns delay */
367 b_sess_valid_mask = (VBUS_B_SESS_VLD_SW_VALUE | VBUS_B_SESS_VLD_SW_EN);
368 clrsetbits_le32(&usbctlr->phy_vbus_sensors, b_sess_valid_mask,
369 (init == USB_INIT_DEVICE) ? b_sess_valid_mask : 0);
372 * To Use the A Session Valid for cable detection logic, VBUS_WAKEUP
373 * mux must be switched to actually use a_sess_vld threshold.
375 if (config->dr_mode == DR_MODE_OTG &&
376 dm_gpio_is_valid(&config->vbus_gpio))
377 clrsetbits_le32(&usbctlr->usb1_legacy_ctrl,
379 VBUS_SENSE_CTL_A_SESS_VLD << VBUS_SENSE_CTL_SHIFT);
381 controller = &fdt_usb_controllers[config->type];
382 debug("controller=%p, type=%d\n", controller, config->type);
385 * PLL Delay CONFIGURATION settings. The following parameters control
386 * the bring up of the plls.
388 timing = get_pll_timing(controller);
390 if (!controller->has_hostpc) {
391 val = readl(&usbctlr->utmip_misc_cfg1);
392 clrsetbits_le32(&val, UTMIP_PLLU_STABLE_COUNT_MASK,
393 timing[PARAM_STABLE_COUNT] <<
394 UTMIP_PLLU_STABLE_COUNT_SHIFT);
395 clrsetbits_le32(&val, UTMIP_PLL_ACTIVE_DLY_COUNT_MASK,
396 timing[PARAM_ACTIVE_DELAY_COUNT] <<
397 UTMIP_PLL_ACTIVE_DLY_COUNT_SHIFT);
398 writel(val, &usbctlr->utmip_misc_cfg1);
400 /* Set PLL enable delay count and crystal frequency count */
401 val = readl(&usbctlr->utmip_pll_cfg1);
402 clrsetbits_le32(&val, UTMIP_PLLU_ENABLE_DLY_COUNT_MASK,
403 timing[PARAM_ENABLE_DELAY_COUNT] <<
404 UTMIP_PLLU_ENABLE_DLY_COUNT_SHIFT);
405 clrsetbits_le32(&val, UTMIP_XTAL_FREQ_COUNT_MASK,
406 timing[PARAM_XTAL_FREQ_COUNT] <<
407 UTMIP_XTAL_FREQ_COUNT_SHIFT);
408 writel(val, &usbctlr->utmip_pll_cfg1);
410 clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
412 val = readl(&clkrst->crc_utmip_pll_cfg2);
413 clrsetbits_le32(&val, UTMIP_PLLU_STABLE_COUNT_MASK,
414 timing[PARAM_STABLE_COUNT] <<
415 UTMIP_PLLU_STABLE_COUNT_SHIFT);
416 clrsetbits_le32(&val, UTMIP_PLL_ACTIVE_DLY_COUNT_MASK,
417 timing[PARAM_ACTIVE_DELAY_COUNT] <<
418 UTMIP_PLL_ACTIVE_DLY_COUNT_SHIFT);
419 writel(val, &clkrst->crc_utmip_pll_cfg2);
421 /* Set PLL enable delay count and crystal frequency count */
422 val = readl(&clkrst->crc_utmip_pll_cfg1);
423 clrsetbits_le32(&val, UTMIP_PLLU_ENABLE_DLY_COUNT_MASK,
424 timing[PARAM_ENABLE_DELAY_COUNT] <<
425 UTMIP_PLLU_ENABLE_DLY_COUNT_SHIFT);
426 clrsetbits_le32(&val, UTMIP_XTAL_FREQ_COUNT_MASK,
427 timing[PARAM_XTAL_FREQ_COUNT] <<
428 UTMIP_XTAL_FREQ_COUNT_SHIFT);
429 writel(val, &clkrst->crc_utmip_pll_cfg1);
431 /* Disable Power Down state for PLL */
432 clrbits_le32(&clkrst->crc_utmip_pll_cfg1,
433 PLLU_POWERDOWN | PLL_ENABLE_POWERDOWN |
434 PLL_ACTIVE_POWERDOWN);
436 /* Recommended PHY settings for EYE diagram */
437 val = readl(&usbctlr->utmip_xcvr_cfg0);
438 clrsetbits_le32(&val, UTMIP_XCVR_SETUP_MASK,
439 0x4 << UTMIP_XCVR_SETUP_SHIFT);
440 clrsetbits_le32(&val, UTMIP_XCVR_SETUP_MSB_MASK,
441 0x3 << UTMIP_XCVR_SETUP_MSB_SHIFT);
442 clrsetbits_le32(&val, UTMIP_XCVR_HSSLEW_MSB_MASK,
443 0x8 << UTMIP_XCVR_HSSLEW_MSB_SHIFT);
444 writel(val, &usbctlr->utmip_xcvr_cfg0);
445 clrsetbits_le32(&usbctlr->utmip_xcvr_cfg1,
446 UTMIP_XCVR_TERM_RANGE_ADJ_MASK,
447 0x7 << UTMIP_XCVR_TERM_RANGE_ADJ_SHIFT);
449 /* Some registers can be controlled from USB1 only. */
450 if (config->periph_id != PERIPH_ID_USBD) {
451 clock_enable(PERIPH_ID_USBD);
452 /* Disable Reset if in Reset state */
453 reset_set_enable(PERIPH_ID_USBD, 0);
455 usb1ctlr = (struct usb_ctlr *)
456 ((unsigned long)config->reg & USB1_ADDR_MASK);
457 val = readl(&usb1ctlr->utmip_bias_cfg0);
458 setbits_le32(&val, UTMIP_HSDISCON_LEVEL_MSB);
459 clrsetbits_le32(&val, UTMIP_HSDISCON_LEVEL_MASK,
460 0x1 << UTMIP_HSDISCON_LEVEL_SHIFT);
461 clrsetbits_le32(&val, UTMIP_HSSQUELCH_LEVEL_MASK,
462 0x2 << UTMIP_HSSQUELCH_LEVEL_SHIFT);
463 writel(val, &usb1ctlr->utmip_bias_cfg0);
465 /* Miscellaneous setting mentioned in Programming Guide */
466 clrbits_le32(&usbctlr->utmip_misc_cfg0,
467 UTMIP_SUSPEND_EXIT_ON_EDGE);
470 /* Setting the tracking length time */
471 clrsetbits_le32(&usbctlr->utmip_bias_cfg1,
472 UTMIP_BIAS_PDTRK_COUNT_MASK,
473 timing[PARAM_BIAS_TIME] << UTMIP_BIAS_PDTRK_COUNT_SHIFT);
475 /* Program debounce time for VBUS to become valid */
476 clrsetbits_le32(&usbctlr->utmip_debounce_cfg0,
477 UTMIP_DEBOUNCE_CFG0_MASK,
478 timing[PARAM_DEBOUNCE_A_TIME] << UTMIP_DEBOUNCE_CFG0_SHIFT);
480 if (timing[PARAM_DEBOUNCE_A_TIME] > 0xFFFF) {
481 clrsetbits_le32(&usbctlr->utmip_debounce_cfg0,
482 UTMIP_DEBOUNCE_CFG0_MASK,
483 (timing[PARAM_DEBOUNCE_A_TIME] >> 1)
484 << UTMIP_DEBOUNCE_CFG0_SHIFT);
485 clrsetbits_le32(&usbctlr->utmip_bias_cfg1,
486 UTMIP_BIAS_DEBOUNCE_TIMESCALE_MASK,
487 1 << UTMIP_BIAS_DEBOUNCE_TIMESCALE_SHIFT);
490 setbits_le32(&usbctlr->utmip_tx_cfg0, UTMIP_FS_PREAMBLE_J);
492 /* Disable battery charge enabling bit */
493 setbits_le32(&usbctlr->utmip_bat_chrg_cfg0, UTMIP_PD_CHRG);
495 clrbits_le32(&usbctlr->utmip_xcvr_cfg0, UTMIP_XCVR_LSBIAS_SE);
496 setbits_le32(&usbctlr->utmip_spare_cfg0, FUSE_SETUP_SEL);
499 * Configure the UTMIP_IDLE_WAIT and UTMIP_ELASTIC_LIMIT
500 * Setting these fields, together with default values of the
501 * other fields, results in programming the registers below as
503 * UTMIP_HSRX_CFG0 = 0x9168c000
504 * UTMIP_HSRX_CFG1 = 0x13
507 /* Set PLL enable delay count and Crystal frequency count */
508 val = readl(&usbctlr->utmip_hsrx_cfg0);
509 clrsetbits_le32(&val, UTMIP_IDLE_WAIT_MASK,
510 utmip_idle_wait_delay << UTMIP_IDLE_WAIT_SHIFT);
511 clrsetbits_le32(&val, UTMIP_ELASTIC_LIMIT_MASK,
512 utmip_elastic_limit << UTMIP_ELASTIC_LIMIT_SHIFT);
513 writel(val, &usbctlr->utmip_hsrx_cfg0);
515 /* Configure the UTMIP_HS_SYNC_START_DLY */
516 clrsetbits_le32(&usbctlr->utmip_hsrx_cfg1,
517 UTMIP_HS_SYNC_START_DLY_MASK,
518 utmip_hs_sync_start_delay << UTMIP_HS_SYNC_START_DLY_SHIFT);
520 /* Preceed the crystal clock disable by >100ns delay. */
523 /* Resuscitate crystal clock by setting UTMIP_PHY_XTAL_CLOCKEN */
524 setbits_le32(&usbctlr->utmip_misc_cfg1, UTMIP_PHY_XTAL_CLOCKEN);
526 if (controller->has_hostpc) {
527 if (config->periph_id == PERIPH_ID_USBD)
528 clrbits_le32(&clkrst->crc_utmip_pll_cfg2,
529 UTMIP_FORCE_PD_SAMP_A_POWERDOWN);
530 if (config->periph_id == PERIPH_ID_USB2)
531 clrbits_le32(&clkrst->crc_utmip_pll_cfg2,
532 UTMIP_FORCE_PD_SAMP_B_POWERDOWN);
533 if (config->periph_id == PERIPH_ID_USB3)
534 clrbits_le32(&clkrst->crc_utmip_pll_cfg2,
535 UTMIP_FORCE_PD_SAMP_C_POWERDOWN);
537 /* Finished the per-controller init. */
539 /* De-assert UTMIP_RESET to bring out of reset. */
540 clrbits_le32(&usbctlr->susp_ctrl, UTMIP_RESET);
542 /* Wait for the phy clock to become valid in 100 ms */
543 for (loop_count = 100000; loop_count != 0; loop_count--) {
544 if (readl(&usbctlr->susp_ctrl) & USB_PHY_CLK_VALID)
551 /* Disable ICUSB FS/LS transceiver */
552 clrbits_le32(&usbctlr->icusb_ctrl, IC_ENB1);
554 /* Select UTMI parallel interface */
555 init_phy_mux(config, PTS_UTMI, init);
557 /* Deassert power down state */
558 clrbits_le32(&usbctlr->utmip_xcvr_cfg0, UTMIP_FORCE_PD_POWERDOWN |
559 UTMIP_FORCE_PD2_POWERDOWN | UTMIP_FORCE_PDZI_POWERDOWN);
560 clrbits_le32(&usbctlr->utmip_xcvr_cfg1, UTMIP_FORCE_PDDISC_POWERDOWN |
561 UTMIP_FORCE_PDCHRP_POWERDOWN | UTMIP_FORCE_PDDR_POWERDOWN);
563 if (controller->has_hostpc) {
565 * BIAS Pad Power Down is common among all 3 USB
566 * controllers and can be controlled from USB1 only.
568 usb1ctlr = (struct usb_ctlr *)
569 ((unsigned long)config->reg & USB1_ADDR_MASK);
570 clrbits_le32(&usb1ctlr->utmip_bias_cfg0, UTMIP_BIASPD);
572 clrbits_le32(&usb1ctlr->utmip_bias_cfg1,
573 UTMIP_FORCE_PDTRK_POWERDOWN);
578 #ifdef CONFIG_USB_ULPI
579 /* if board file does not set a ULPI reference frequency we default to 24MHz */
580 #ifndef CONFIG_ULPI_REF_CLK
581 #define CONFIG_ULPI_REF_CLK 24000000
584 /* set up the ULPI USB controller with the parameters provided */
585 static int init_ulpi_usb_controller(struct fdt_usb *config,
586 enum usb_init_type init)
590 struct ulpi_viewport ulpi_vp;
591 struct usb_ctlr *usbctlr = config->reg;
594 /* set up ULPI reference clock on pllp_out4 */
595 clock_enable(PERIPH_ID_DEV2_OUT);
596 clock_set_pllout(CLOCK_ID_PERIPH, PLL_OUT4, CONFIG_ULPI_REF_CLK);
599 if (dm_gpio_is_valid(&config->phy_reset_gpio)) {
601 * This GPIO is typically active-low, and marked as such in
602 * device tree. dm_gpio_set_value() takes this into account
603 * and inverts the value we pass here if required. In other
604 * words, this first call logically asserts the reset signal,
605 * which typically results in driving the physical GPIO low,
606 * and the second call logically de-asserts the reset signal,
607 * which typically results in driver the GPIO high.
609 dm_gpio_set_value(&config->phy_reset_gpio, 1);
611 dm_gpio_set_value(&config->phy_reset_gpio, 0);
614 /* Reset the usb controller */
615 clock_enable(config->periph_id);
616 usbf_reset_controller(config, usbctlr);
618 /* enable pinmux bypass */
619 setbits_le32(&usbctlr->ulpi_timing_ctrl_0,
620 ULPI_CLKOUT_PINMUX_BYP | ULPI_OUTPUT_PINMUX_BYP);
622 /* Select ULPI parallel interface */
623 init_phy_mux(config, PTS_ULPI, init);
625 /* enable ULPI transceiver */
626 setbits_le32(&usbctlr->susp_ctrl, ULPI_PHY_ENB);
628 /* configure ULPI transceiver timings */
630 writel(val, &usbctlr->ulpi_timing_ctrl_1);
632 val |= ULPI_DATA_TRIMMER_SEL(4);
633 val |= ULPI_STPDIRNXT_TRIMMER_SEL(4);
634 val |= ULPI_DIR_TRIMMER_SEL(4);
635 writel(val, &usbctlr->ulpi_timing_ctrl_1);
638 val |= ULPI_DATA_TRIMMER_LOAD;
639 val |= ULPI_STPDIRNXT_TRIMMER_LOAD;
640 val |= ULPI_DIR_TRIMMER_LOAD;
641 writel(val, &usbctlr->ulpi_timing_ctrl_1);
643 /* set up phy for host operation with external vbus supply */
644 ulpi_vp.port_num = 0;
645 ulpi_vp.viewport_addr = (u32)&usbctlr->ulpi_viewport;
647 ret = ulpi_init(&ulpi_vp);
649 printf("Tegra ULPI viewport init failed\n");
653 ulpi_set_vbus(&ulpi_vp, 1, 1);
654 ulpi_set_vbus_indicator(&ulpi_vp, 1, 1, 0);
656 /* enable wakeup events */
657 setbits_le32(&usbctlr->port_sc1, WKCN | WKDS | WKOC);
659 /* Enable and wait for the phy clock to become valid in 100 ms */
660 setbits_le32(&usbctlr->susp_ctrl, USB_SUSP_CLR);
661 for (loop_count = 100000; loop_count != 0; loop_count--) {
662 if (readl(&usbctlr->susp_ctrl) & USB_PHY_CLK_VALID)
668 clrbits_le32(&usbctlr->susp_ctrl, USB_SUSP_CLR);
673 static int init_ulpi_usb_controller(struct fdt_usb *config,
674 enum usb_init_type init)
676 printf("No code to set up ULPI controller, please enable"
677 "CONFIG_USB_ULPI and CONFIG_USB_ULPI_VIEWPORT");
682 static void config_clock(const u32 timing[])
684 debug("%s: DIVM = %d, DIVN = %d, DIVP = %d, cpcon/lfcon = %d/%d\n",
685 __func__, timing[PARAM_DIVM], timing[PARAM_DIVN],
686 timing[PARAM_DIVP], timing[PARAM_CPCON], timing[PARAM_LFCON]);
688 clock_start_pll(CLOCK_ID_USB,
689 timing[PARAM_DIVM], timing[PARAM_DIVN], timing[PARAM_DIVP],
690 timing[PARAM_CPCON], timing[PARAM_LFCON]);
693 static int fdt_decode_usb(struct udevice *dev, struct fdt_usb *config)
695 const char *phy, *mode;
697 config->reg = (struct usb_ctlr *)dev_read_addr(dev);
698 debug("reg=%p\n", config->reg);
699 mode = dev_read_string(dev, "dr_mode");
701 if (0 == strcmp(mode, "host"))
702 config->dr_mode = DR_MODE_HOST;
703 else if (0 == strcmp(mode, "peripheral"))
704 config->dr_mode = DR_MODE_DEVICE;
705 else if (0 == strcmp(mode, "otg"))
706 config->dr_mode = DR_MODE_OTG;
708 debug("%s: Cannot decode dr_mode '%s'\n", __func__,
713 config->dr_mode = DR_MODE_HOST;
716 phy = dev_read_string(dev, "phy_type");
717 config->utmi = phy && 0 == strcmp("utmi", phy);
718 config->ulpi = phy && 0 == strcmp("ulpi", phy);
719 config->has_legacy_mode = dev_read_bool(dev, "nvidia,has-legacy-mode");
720 config->periph_id = clock_decode_periph_id(dev);
721 if (config->periph_id == PERIPH_ID_NONE) {
722 debug("%s: Missing/invalid peripheral ID\n", __func__);
725 gpio_request_by_name(dev, "nvidia,vbus-gpio", 0, &config->vbus_gpio,
727 gpio_request_by_name(dev, "nvidia,phy-reset-gpio", 0,
728 &config->phy_reset_gpio, GPIOD_IS_OUT);
729 debug("legacy_mode=%d, utmi=%d, ulpi=%d, periph_id=%d, vbus=%d, phy_reset=%d, dr_mode=%d, reg=%p\n",
730 config->has_legacy_mode, config->utmi, config->ulpi,
731 config->periph_id, gpio_get_number(&config->vbus_gpio),
732 gpio_get_number(&config->phy_reset_gpio), config->dr_mode,
738 int usb_common_init(struct fdt_usb *config, enum usb_init_type init)
744 switch (config->dr_mode) {
749 printf("tegrausb: Invalid dr_mode %d for host mode\n",
754 case USB_INIT_DEVICE:
755 if (config->periph_id != PERIPH_ID_USBD) {
756 printf("tegrausb: Device mode only supported on first USB controller\n");
760 printf("tegrausb: Device mode only supported with UTMI PHY\n");
763 switch (config->dr_mode) {
768 printf("tegrausb: Invalid dr_mode %d for device mode\n",
774 printf("tegrausb: Unknown USB_INIT_* %d\n", init);
778 debug("%d, %d\n", config->utmi, config->ulpi);
780 ret = init_utmi_usb_controller(config, init);
781 else if (config->ulpi)
782 ret = init_ulpi_usb_controller(config, init);
786 set_up_vbus(config, init);
788 config->init_type = init;
793 void usb_common_uninit(struct fdt_usb *priv)
795 struct usb_ctlr *usbctlr;
799 /* Stop controller */
800 writel(0, &usbctlr->usb_cmd);
803 /* Initiate controller reset */
804 writel(2, &usbctlr->usb_cmd);
808 static const struct ehci_ops tegra_ehci_ops = {
809 .set_usb_mode = tegra_ehci_set_usbmode,
810 .get_port_speed = tegra_ehci_get_port_speed,
811 .powerup_fixup = tegra_ehci_powerup_fixup,
814 static int ehci_usb_ofdata_to_platdata(struct udevice *dev)
816 struct fdt_usb *priv = dev_get_priv(dev);
819 ret = fdt_decode_usb(dev, priv);
823 priv->type = dev_get_driver_data(dev);
828 static int ehci_usb_probe(struct udevice *dev)
830 struct usb_platdata *plat = dev_get_platdata(dev);
831 struct fdt_usb *priv = dev_get_priv(dev);
832 struct ehci_hccr *hccr;
833 struct ehci_hcor *hcor;
834 static bool clk_done;
837 ret = usb_common_init(priv, plat->init_type);
840 hccr = (struct ehci_hccr *)&priv->reg->cap_length;
841 hcor = (struct ehci_hcor *)&priv->reg->usb_cmd;
843 config_clock(get_pll_timing(&fdt_usb_controllers[priv->type]));
847 return ehci_register(dev, hccr, hcor, &tegra_ehci_ops, 0,
851 static const struct udevice_id ehci_usb_ids[] = {
852 { .compatible = "nvidia,tegra20-ehci", .data = USB_CTLR_T20 },
853 { .compatible = "nvidia,tegra30-ehci", .data = USB_CTLR_T30 },
854 { .compatible = "nvidia,tegra114-ehci", .data = USB_CTLR_T114 },
855 { .compatible = "nvidia,tegra210-ehci", .data = USB_CTLR_T210 },
859 U_BOOT_DRIVER(usb_ehci) = {
860 .name = "ehci_tegra",
862 .of_match = ehci_usb_ids,
863 .ofdata_to_platdata = ehci_usb_ofdata_to_platdata,
864 .probe = ehci_usb_probe,
865 .remove = ehci_deregister,
866 .ops = &ehci_usb_ops,
867 .platdata_auto_alloc_size = sizeof(struct usb_platdata),
868 .priv_auto_alloc_size = sizeof(struct fdt_usb),
869 .flags = DM_FLAG_ALLOC_PRIV_DMA,