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Jagan Tekid3c38282018-05-07 13:03:26 +05301/*
2 * Allwinner sun4i USB PHY driver
3 *
4 * Copyright (C) 2017 Jagan Teki <jagan@amarulasolutions.com>
5 * Copyright (C) 2015 Hans de Goede <hdegoede@redhat.com>
6 * Copyright (C) 2014 Roman Byshko <rbyshko@gmail.com>
7 *
8 * Modelled arch/arm/mach-sunxi/usb_phy.c to compatible with generic-phy.
9 *
10 * SPDX-License-Identifier: GPL-2.0+
11 */
12
Jagan Teki0dc33332018-08-06 12:16:39 +053013#include <clk.h>
Jagan Tekid3c38282018-05-07 13:03:26 +053014#include <dm.h>
Simon Glass0f2af882020-05-10 11:40:05 -060015#include <log.h>
Jagan Tekid3c38282018-05-07 13:03:26 +053016#include <dm/device.h>
17#include <generic-phy.h>
Jagan Teki21fc42d2018-05-07 13:03:27 +053018#include <phy-sun4i-usb.h>
Jagan Teki0dc33332018-08-06 12:16:39 +053019#include <reset.h>
Jagan Tekid3c38282018-05-07 13:03:26 +053020#include <asm/gpio.h>
21#include <asm/io.h>
Simon Glass9bc15642020-02-03 07:36:16 -070022#include <dm/device_compat.h>
Simon Glass4dcacfc2020-05-10 11:40:13 -060023#include <linux/bitops.h>
Simon Glassdbd79542020-05-10 11:40:11 -060024#include <linux/delay.h>
Simon Glassd66c5f72020-02-03 07:36:15 -070025#include <linux/err.h>
Samuel Hollandc70137c2021-09-12 09:22:42 -050026#include <power/regulator.h>
Jagan Tekid3c38282018-05-07 13:03:26 +053027
28#define REG_ISCR 0x00
29#define REG_PHYCTL_A10 0x04
30#define REG_PHYBIST 0x08
31#define REG_PHYTUNE 0x0c
32#define REG_PHYCTL_A33 0x10
33#define REG_PHY_OTGCTL 0x20
Andre Przywara8662e7e2022-07-14 23:09:21 -050034
35#define REG_HCI_PHY_CTL 0x10
Jagan Tekid3c38282018-05-07 13:03:26 +053036
37/* Common Control Bits for Both PHYs */
38#define PHY_PLL_BW 0x03
39#define PHY_RES45_CAL_EN 0x0c
40
41/* Private Control Bits for Each PHY */
42#define PHY_TX_AMPLITUDE_TUNE 0x20
43#define PHY_TX_SLEWRATE_TUNE 0x22
44#define PHY_DISCON_TH_SEL 0x2a
Jagan Teki37671e12018-05-07 13:03:37 +053045#define PHY_SQUELCH_DETECT 0x3c
Jagan Tekid3c38282018-05-07 13:03:26 +053046
47#define PHYCTL_DATA BIT(7)
48#define OTGCTL_ROUTE_MUSB BIT(0)
49
50#define PHY_TX_RATE BIT(4)
51#define PHY_TX_MAGNITUDE BIT(2)
52#define PHY_TX_AMPLITUDE_LEN 5
53
54#define PHY_RES45_CAL_DATA BIT(0)
55#define PHY_RES45_CAL_LEN 1
56#define PHY_DISCON_TH_LEN 2
57
58#define SUNXI_AHB_ICHR8_EN BIT(10)
59#define SUNXI_AHB_INCR4_BURST_EN BIT(9)
60#define SUNXI_AHB_INCRX_ALIGN_EN BIT(8)
61#define SUNXI_ULPI_BYPASS_EN BIT(0)
62
Jagan Teki05a7b9f2018-05-07 13:03:30 +053063/* A83T specific control bits for PHY0 */
64#define PHY_CTL_VBUSVLDEXT BIT(5)
65#define PHY_CTL_SIDDQ BIT(3)
Andre Przywara8662e7e2022-07-14 23:09:21 -050066#define PHY_CTL_H3_SIDDQ BIT(1)
Jagan Teki05a7b9f2018-05-07 13:03:30 +053067
68/* A83T specific control bits for PHY2 HSIC */
69#define SUNXI_EHCI_HS_FORCE BIT(20)
70#define SUNXI_HSIC_CONNECT_INT BIT(16)
71#define SUNXI_HSIC BIT(1)
72
Jagan Tekid3c38282018-05-07 13:03:26 +053073#define MAX_PHYS 4
74
Jagan Tekid3c38282018-05-07 13:03:26 +053075struct sun4i_usb_phy_cfg {
76 int num_phys;
Andre Przywarab06b90f2023-06-12 00:32:38 +010077 int hsic_index;
Jagan Tekid3c38282018-05-07 13:03:26 +053078 u32 disc_thresh;
Andre Przywara8662e7e2022-07-14 23:09:21 -050079 u32 hci_phy_ctl_clear;
Jagan Tekid3c38282018-05-07 13:03:26 +053080 u8 phyctl_offset;
Jagan Teki0dc33332018-08-06 12:16:39 +053081 bool dedicated_clocks;
Jagan Tekid3c38282018-05-07 13:03:26 +053082 bool phy0_dual_route;
Andre Przywarab06b90f2023-06-12 00:32:38 +010083 bool siddq_in_base;
Andre Przywara720f4e42023-06-12 00:32:39 +010084 bool needs_phy2_siddq;
Andre Przywarab2f0f312019-06-23 15:09:49 +010085 int missing_phys;
Jagan Tekid3c38282018-05-07 13:03:26 +053086};
87
88struct sun4i_usb_phy_info {
Jagan Tekid3c38282018-05-07 13:03:26 +053089 const char *gpio_id_det;
Jagan Tekid3c38282018-05-07 13:03:26 +053090} phy_info[] = {
91 {
Jagan Tekid3c38282018-05-07 13:03:26 +053092 .gpio_id_det = CONFIG_USB0_ID_DET,
Jagan Tekid3c38282018-05-07 13:03:26 +053093 },
94 {
Jagan Tekid3c38282018-05-07 13:03:26 +053095 .gpio_id_det = NULL,
Jagan Tekid3c38282018-05-07 13:03:26 +053096 },
97 {
Jagan Tekid3c38282018-05-07 13:03:26 +053098 .gpio_id_det = NULL,
Jagan Tekid3c38282018-05-07 13:03:26 +053099 },
100 {
Jagan Tekid3c38282018-05-07 13:03:26 +0530101 .gpio_id_det = NULL,
Jagan Tekid3c38282018-05-07 13:03:26 +0530102 },
103};
104
105struct sun4i_usb_phy_plat {
106 void __iomem *pmu;
Andre Przywara3331d222022-06-07 23:36:18 +0100107 struct gpio_desc gpio_vbus_det;
108 struct gpio_desc gpio_id_det;
Jagan Teki0dc33332018-08-06 12:16:39 +0530109 struct clk clocks;
Andre Przywara720f4e42023-06-12 00:32:39 +0100110 struct clk clk2;
Jagan Teki0dc33332018-08-06 12:16:39 +0530111 struct reset_ctl resets;
Samuel Holland9a361ef2023-10-31 01:39:53 -0500112 struct udevice *vbus;
Jagan Tekid3c38282018-05-07 13:03:26 +0530113 int id;
114};
115
116struct sun4i_usb_phy_data {
117 void __iomem *base;
Jagan Tekid3c38282018-05-07 13:03:26 +0530118 const struct sun4i_usb_phy_cfg *cfg;
119 struct sun4i_usb_phy_plat *usb_phy;
Samuel Hollandc70137c2021-09-12 09:22:42 -0500120 struct udevice *vbus_power_supply;
Jagan Tekid3c38282018-05-07 13:03:26 +0530121};
122
123static int initial_usb_scan_delay = CONFIG_INITIAL_USB_SCAN_DELAY;
124
125static void sun4i_usb_phy_write(struct phy *phy, u32 addr, u32 data, int len)
126{
127 struct sun4i_usb_phy_data *phy_data = dev_get_priv(phy->dev);
128 struct sun4i_usb_phy_plat *usb_phy = &phy_data->usb_phy[phy->id];
129 u32 temp, usbc_bit = BIT(usb_phy->id * 2);
130 void __iomem *phyctl = phy_data->base + phy_data->cfg->phyctl_offset;
131 int i;
132
133 if (phy_data->cfg->phyctl_offset == REG_PHYCTL_A33) {
134 /* SoCs newer than A33 need us to set phyctl to 0 explicitly */
135 writel(0, phyctl);
136 }
137
138 for (i = 0; i < len; i++) {
139 temp = readl(phyctl);
140
141 /* clear the address portion */
142 temp &= ~(0xff << 8);
143
144 /* set the address */
145 temp |= ((addr + i) << 8);
146 writel(temp, phyctl);
147
148 /* set the data bit and clear usbc bit*/
149 temp = readb(phyctl);
150 if (data & 0x1)
151 temp |= PHYCTL_DATA;
152 else
153 temp &= ~PHYCTL_DATA;
154 temp &= ~usbc_bit;
155 writeb(temp, phyctl);
156
157 /* pulse usbc_bit */
158 temp = readb(phyctl);
159 temp |= usbc_bit;
160 writeb(temp, phyctl);
161
162 temp = readb(phyctl);
163 temp &= ~usbc_bit;
164 writeb(temp, phyctl);
165
166 data >>= 1;
167 }
168}
169
Jagan Teki05a7b9f2018-05-07 13:03:30 +0530170static void sun4i_usb_phy_passby(struct phy *phy, bool enable)
Jagan Tekid3c38282018-05-07 13:03:26 +0530171{
Jagan Teki05a7b9f2018-05-07 13:03:30 +0530172 struct sun4i_usb_phy_data *data = dev_get_priv(phy->dev);
173 struct sun4i_usb_phy_plat *usb_phy = &data->usb_phy[phy->id];
Jagan Tekid3c38282018-05-07 13:03:26 +0530174 u32 bits, reg_value;
175
176 if (!usb_phy->pmu)
177 return;
178
179 bits = SUNXI_AHB_ICHR8_EN | SUNXI_AHB_INCR4_BURST_EN |
180 SUNXI_AHB_INCRX_ALIGN_EN | SUNXI_ULPI_BYPASS_EN;
Jagan Teki05a7b9f2018-05-07 13:03:30 +0530181
182 /* A83T USB2 is HSIC */
Andre Przywarab06b90f2023-06-12 00:32:38 +0100183 if (data->cfg->hsic_index && usb_phy->id == data->cfg->hsic_index)
Jagan Teki05a7b9f2018-05-07 13:03:30 +0530184 bits |= SUNXI_EHCI_HS_FORCE | SUNXI_HSIC_CONNECT_INT |
185 SUNXI_HSIC;
186
Jagan Tekid3c38282018-05-07 13:03:26 +0530187 reg_value = readl(usb_phy->pmu);
188
189 if (enable)
190 reg_value |= bits;
191 else
192 reg_value &= ~bits;
193
194 writel(reg_value, usb_phy->pmu);
195}
196
197static int sun4i_usb_phy_power_on(struct phy *phy)
198{
199 struct sun4i_usb_phy_data *data = dev_get_priv(phy->dev);
200 struct sun4i_usb_phy_plat *usb_phy = &data->usb_phy[phy->id];
Samuel Holland9a361ef2023-10-31 01:39:53 -0500201 int ret;
Jagan Tekid3c38282018-05-07 13:03:26 +0530202
203 if (initial_usb_scan_delay) {
204 mdelay(initial_usb_scan_delay);
205 initial_usb_scan_delay = 0;
206 }
207
Samuel Hollandad991492022-07-14 22:34:53 -0500208 /* For phy0 only turn on Vbus if we don't have an ext. Vbus */
209 if (phy->id == 0 && sun4i_usb_phy_vbus_detect(phy)) {
210 dev_warn(phy->dev, "External vbus detected, not enabling our own vbus\n");
211 return 0;
212 }
213
Samuel Holland9a361ef2023-10-31 01:39:53 -0500214 ret = regulator_set_enable_if_allowed(usb_phy->vbus, true);
215 if (ret)
216 return ret;
Jagan Tekid3c38282018-05-07 13:03:26 +0530217
218 return 0;
219}
220
221static int sun4i_usb_phy_power_off(struct phy *phy)
222{
223 struct sun4i_usb_phy_data *data = dev_get_priv(phy->dev);
224 struct sun4i_usb_phy_plat *usb_phy = &data->usb_phy[phy->id];
Samuel Holland9a361ef2023-10-31 01:39:53 -0500225 int ret;
Jagan Tekid3c38282018-05-07 13:03:26 +0530226
Samuel Holland9a361ef2023-10-31 01:39:53 -0500227 ret = regulator_set_enable_if_allowed(usb_phy->vbus, false);
228 if (ret)
229 return ret;
Jagan Tekid3c38282018-05-07 13:03:26 +0530230
231 return 0;
232}
233
234static void sun4i_usb_phy0_reroute(struct sun4i_usb_phy_data *data, bool id_det)
235{
236 u32 regval;
237
238 regval = readl(data->base + REG_PHY_OTGCTL);
239 if (!id_det) {
240 /* Host mode. Route phy0 to EHCI/OHCI */
241 regval &= ~OTGCTL_ROUTE_MUSB;
242 } else {
243 /* Peripheral mode. Route phy0 to MUSB */
244 regval |= OTGCTL_ROUTE_MUSB;
245 }
246 writel(regval, data->base + REG_PHY_OTGCTL);
247}
248
249static int sun4i_usb_phy_init(struct phy *phy)
250{
251 struct sun4i_usb_phy_data *data = dev_get_priv(phy->dev);
252 struct sun4i_usb_phy_plat *usb_phy = &data->usb_phy[phy->id];
253 u32 val;
Jagan Teki0dc33332018-08-06 12:16:39 +0530254 int ret;
Jagan Tekid3c38282018-05-07 13:03:26 +0530255
Jagan Teki0dc33332018-08-06 12:16:39 +0530256 ret = clk_enable(&usb_phy->clocks);
257 if (ret) {
Sean Andersone4d3c972020-09-15 10:45:04 -0400258 dev_err(phy->dev, "failed to enable usb_%ldphy clock\n",
259 phy->id);
Jagan Teki0dc33332018-08-06 12:16:39 +0530260 return ret;
261 }
262
263 ret = reset_deassert(&usb_phy->resets);
264 if (ret) {
Sean Andersone4d3c972020-09-15 10:45:04 -0400265 dev_err(phy->dev, "failed to deassert usb_%ldreset reset\n",
266 phy->id);
Jagan Teki0dc33332018-08-06 12:16:39 +0530267 return ret;
268 }
Jagan Tekid3c38282018-05-07 13:03:26 +0530269
Andre Przywara720f4e42023-06-12 00:32:39 +0100270 /* Some PHYs on some SoCs (the H616) need the help of PHY2 to work. */
271 if (data->cfg->needs_phy2_siddq && phy->id != 2) {
272 struct sun4i_usb_phy_plat *phy2 = &data->usb_phy[2];
273
274 ret = clk_enable(&phy2->clocks);
275 if (ret) {
276 dev_err(phy->dev, "failed to enable aux clock\n");
277 return ret;
278 }
279
280 ret = reset_deassert(&phy2->resets);
281 if (ret) {
282 dev_err(phy->dev, "failed to deassert aux reset\n");
283 return ret;
284 }
285
286 /*
287 * This extra clock is just needed to access the
288 * REG_HCI_PHY_CTL PMU register for PHY2.
289 */
290 ret = clk_enable(&phy2->clk2);
291 if (ret) {
292 dev_err(phy->dev, "failed to enable PHY2 clock\n");
293 return ret;
294 }
295
296 if (phy2->pmu && data->cfg->hci_phy_ctl_clear) {
297 val = readl(phy2->pmu + REG_HCI_PHY_CTL);
298 val &= ~data->cfg->hci_phy_ctl_clear;
299 writel(val, phy2->pmu + REG_HCI_PHY_CTL);
300 }
301
302 clk_disable(&phy2->clk2);
303 }
304
Andre Przywara8662e7e2022-07-14 23:09:21 -0500305 if (usb_phy->pmu && data->cfg->hci_phy_ctl_clear) {
306 val = readl(usb_phy->pmu + REG_HCI_PHY_CTL);
307 val &= ~data->cfg->hci_phy_ctl_clear;
308 writel(val, usb_phy->pmu + REG_HCI_PHY_CTL);
309 }
310
Andre Przywarab06b90f2023-06-12 00:32:38 +0100311 if (data->cfg->siddq_in_base) {
Jagan Teki05a7b9f2018-05-07 13:03:30 +0530312 if (phy->id == 0) {
313 val = readl(data->base + data->cfg->phyctl_offset);
314 val |= PHY_CTL_VBUSVLDEXT;
315 val &= ~PHY_CTL_SIDDQ;
316 writel(val, data->base + data->cfg->phyctl_offset);
317 }
318 } else {
Jagan Teki05a7b9f2018-05-07 13:03:30 +0530319 if (usb_phy->id == 0)
320 sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN,
321 PHY_RES45_CAL_DATA,
322 PHY_RES45_CAL_LEN);
Jagan Tekid3c38282018-05-07 13:03:26 +0530323
Jagan Teki05a7b9f2018-05-07 13:03:30 +0530324 /* Adjust PHY's magnitude and rate */
325 sun4i_usb_phy_write(phy, PHY_TX_AMPLITUDE_TUNE,
326 PHY_TX_MAGNITUDE | PHY_TX_RATE,
327 PHY_TX_AMPLITUDE_LEN);
Jagan Tekid3c38282018-05-07 13:03:26 +0530328
Jagan Teki05a7b9f2018-05-07 13:03:30 +0530329 /* Disconnect threshold adjustment */
330 sun4i_usb_phy_write(phy, PHY_DISCON_TH_SEL,
331 data->cfg->disc_thresh, PHY_DISCON_TH_LEN);
332 }
Jagan Tekid3c38282018-05-07 13:03:26 +0530333
Paul Kocialkowski2ee06372019-03-14 10:38:00 +0000334#ifdef CONFIG_USB_MUSB_SUNXI
335 /* Needed for HCI and conflicts with MUSB, keep PHY0 on MUSB */
336 if (usb_phy->id != 0)
337 sun4i_usb_phy_passby(phy, true);
338
339 /* Route PHY0 to MUSB to allow USB gadget */
340 if (data->cfg->phy0_dual_route)
341 sun4i_usb_phy0_reroute(data, true);
342#else
Jagan Tekib8cbf9d2018-07-20 12:34:20 +0530343 sun4i_usb_phy_passby(phy, true);
Jagan Tekid3c38282018-05-07 13:03:26 +0530344
Paul Kocialkowski2ee06372019-03-14 10:38:00 +0000345 /* Route PHY0 to HCI to allow USB host */
346 if (data->cfg->phy0_dual_route)
347 sun4i_usb_phy0_reroute(data, false);
348#endif
Jagan Tekid3c38282018-05-07 13:03:26 +0530349
350 return 0;
351}
352
353static int sun4i_usb_phy_exit(struct phy *phy)
354{
355 struct sun4i_usb_phy_data *data = dev_get_priv(phy->dev);
356 struct sun4i_usb_phy_plat *usb_phy = &data->usb_phy[phy->id];
Jagan Teki0dc33332018-08-06 12:16:39 +0530357 int ret;
Jagan Tekid3c38282018-05-07 13:03:26 +0530358
Jagan Teki05a7b9f2018-05-07 13:03:30 +0530359 if (phy->id == 0) {
Andre Przywarab06b90f2023-06-12 00:32:38 +0100360 if (data->cfg->siddq_in_base) {
Jagan Teki05a7b9f2018-05-07 13:03:30 +0530361 void __iomem *phyctl = data->base +
362 data->cfg->phyctl_offset;
363
364 writel(readl(phyctl) | PHY_CTL_SIDDQ, phyctl);
365 }
366 }
367
368 sun4i_usb_phy_passby(phy, false);
Jagan Tekid3c38282018-05-07 13:03:26 +0530369
Jagan Teki0dc33332018-08-06 12:16:39 +0530370 ret = clk_disable(&usb_phy->clocks);
371 if (ret) {
Sean Andersone4d3c972020-09-15 10:45:04 -0400372 dev_err(phy->dev, "failed to disable usb_%ldphy clock\n",
373 phy->id);
Jagan Teki0dc33332018-08-06 12:16:39 +0530374 return ret;
375 }
376
377 ret = reset_assert(&usb_phy->resets);
378 if (ret) {
Sean Andersone4d3c972020-09-15 10:45:04 -0400379 dev_err(phy->dev, "failed to assert usb_%ldreset reset\n",
380 phy->id);
Jagan Teki0dc33332018-08-06 12:16:39 +0530381 return ret;
382 }
Jagan Tekid3c38282018-05-07 13:03:26 +0530383
384 return 0;
385}
386
387static int sun4i_usb_phy_xlate(struct phy *phy,
388 struct ofnode_phandle_args *args)
389{
390 struct sun4i_usb_phy_data *data = dev_get_priv(phy->dev);
391
Andre Przywara6c53de52023-06-12 00:32:35 +0100392 if (args->args_count != 1)
393 return -EINVAL;
394
395 if (args->args[0] >= data->cfg->num_phys)
Jagan Tekid3c38282018-05-07 13:03:26 +0530396 return -EINVAL;
397
Andre Przywarab2f0f312019-06-23 15:09:49 +0100398 if (data->cfg->missing_phys & BIT(args->args[0]))
399 return -ENODEV;
400
Jagan Tekid3c38282018-05-07 13:03:26 +0530401 if (args->args_count)
402 phy->id = args->args[0];
403 else
404 phy->id = 0;
405
406 debug("%s: phy_id = %ld\n", __func__, phy->id);
407 return 0;
408}
409
Jagan Teki21fc42d2018-05-07 13:03:27 +0530410int sun4i_usb_phy_vbus_detect(struct phy *phy)
411{
412 struct sun4i_usb_phy_data *data = dev_get_priv(phy->dev);
413 struct sun4i_usb_phy_plat *usb_phy = &data->usb_phy[phy->id];
Samuel Hollandf42dbdf2021-09-12 09:22:41 -0500414 int err = 1, retries = 3;
Jagan Teki21fc42d2018-05-07 13:03:27 +0530415
Andre Przywara3331d222022-06-07 23:36:18 +0100416 if (dm_gpio_is_valid(&usb_phy->gpio_vbus_det)) {
417 err = dm_gpio_get_value(&usb_phy->gpio_vbus_det);
Samuel Hollandf42dbdf2021-09-12 09:22:41 -0500418 /*
419 * Vbus may have been provided by the board and just turned off
420 * some milliseconds ago on reset. What we're measuring then is
421 * a residual charge on Vbus. Sleep a bit and try again.
422 */
423 while (err > 0 && retries--) {
424 mdelay(100);
Andre Przywara3331d222022-06-07 23:36:18 +0100425 err = dm_gpio_get_value(&usb_phy->gpio_vbus_det);
Samuel Hollandf42dbdf2021-09-12 09:22:41 -0500426 }
Samuel Hollandc70137c2021-09-12 09:22:42 -0500427 } else if (data->vbus_power_supply) {
428 err = regulator_get_enable(data->vbus_power_supply);
Jagan Teki21fc42d2018-05-07 13:03:27 +0530429 }
430
431 return err;
432}
433
434int sun4i_usb_phy_id_detect(struct phy *phy)
435{
436 struct sun4i_usb_phy_data *data = dev_get_priv(phy->dev);
437 struct sun4i_usb_phy_plat *usb_phy = &data->usb_phy[phy->id];
438
Andre Przywara3331d222022-06-07 23:36:18 +0100439 if (!dm_gpio_is_valid(&usb_phy->gpio_id_det))
440 return -1;
Jagan Teki21fc42d2018-05-07 13:03:27 +0530441
Andre Przywara3331d222022-06-07 23:36:18 +0100442 return dm_gpio_get_value(&usb_phy->gpio_id_det);
Jagan Teki21fc42d2018-05-07 13:03:27 +0530443}
444
Jagan Teki37671e12018-05-07 13:03:37 +0530445void sun4i_usb_phy_set_squelch_detect(struct phy *phy, bool enabled)
446{
447 sun4i_usb_phy_write(phy, PHY_SQUELCH_DETECT, enabled ? 0 : 2, 2);
448}
449
Jagan Tekid3c38282018-05-07 13:03:26 +0530450static struct phy_ops sun4i_usb_phy_ops = {
451 .of_xlate = sun4i_usb_phy_xlate,
452 .init = sun4i_usb_phy_init,
453 .power_on = sun4i_usb_phy_power_on,
454 .power_off = sun4i_usb_phy_power_off,
455 .exit = sun4i_usb_phy_exit,
456};
457
458static int sun4i_usb_phy_probe(struct udevice *dev)
459{
Simon Glassfa20e932020-12-03 16:55:20 -0700460 struct sun4i_usb_phy_plat *plat = dev_get_plat(dev);
Jagan Tekid3c38282018-05-07 13:03:26 +0530461 struct sun4i_usb_phy_data *data = dev_get_priv(dev);
462 int i, ret;
463
464 data->cfg = (const struct sun4i_usb_phy_cfg *)dev_get_driver_data(dev);
465 if (!data->cfg)
466 return -EINVAL;
467
Matthias Schiffer47331932023-09-27 15:33:34 +0200468 data->base = (void __iomem *)dev_read_addr_name_ptr(dev, "phy_ctrl");
469 if (!data->base)
470 return -EINVAL;
Jagan Tekid3c38282018-05-07 13:03:26 +0530471
Samuel Hollandc70137c2021-09-12 09:22:42 -0500472 device_get_supply_regulator(dev, "usb0_vbus_power-supply",
473 &data->vbus_power_supply);
474
Jagan Tekid3c38282018-05-07 13:03:26 +0530475 data->usb_phy = plat;
476 for (i = 0; i < data->cfg->num_phys; i++) {
477 struct sun4i_usb_phy_plat *phy = &plat[i];
478 struct sun4i_usb_phy_info *info = &phy_info[i];
Samuel Holland9a361ef2023-10-31 01:39:53 -0500479 char name[32];
Jagan Tekid3c38282018-05-07 13:03:26 +0530480
Andre Przywarab2f0f312019-06-23 15:09:49 +0100481 if (data->cfg->missing_phys & BIT(i))
482 continue;
483
Samuel Holland9a361ef2023-10-31 01:39:53 -0500484 snprintf(name, sizeof(name), "usb%d_vbus-supply", i);
485 ret = device_get_supply_regulator(dev, name, &phy->vbus);
486 if (phy->vbus) {
487 ret = regulator_set_enable_if_allowed(phy->vbus, false);
Andre Przywara3331d222022-06-07 23:36:18 +0100488 if (ret)
489 return ret;
Jagan Tekid3c38282018-05-07 13:03:26 +0530490 }
491
Andre Przywara2624ded2025-03-30 17:13:23 +0100492 if (i == 0) {
493 ret = gpio_request_by_name(dev, "usb0_vbus_det-gpios",
494 0, &phy->gpio_vbus_det,
495 GPIOD_IS_IN);
496 if (ret && ret != -ENOENT) {
497 dev_err(dev,
498 "failed to get VBUS detect GPIO: %d\n",
499 ret);
Jagan Tekid3c38282018-05-07 13:03:26 +0530500 return ret;
Andre Przywara2624ded2025-03-30 17:13:23 +0100501 }
Jagan Tekid3c38282018-05-07 13:03:26 +0530502 }
503
Andre Przywara3331d222022-06-07 23:36:18 +0100504 ret = dm_gpio_lookup_name(info->gpio_id_det, &phy->gpio_id_det);
505 if (ret == 0) {
506 ret = dm_gpio_request(&phy->gpio_id_det, "usb_id_det");
Jagan Tekid3c38282018-05-07 13:03:26 +0530507 if (ret)
508 return ret;
Andre Przywara3331d222022-06-07 23:36:18 +0100509 ret = dm_gpio_set_dir_flags(&phy->gpio_id_det,
510 GPIOD_IS_IN | GPIOD_PULL_UP);
Jagan Tekid3c38282018-05-07 13:03:26 +0530511 if (ret)
512 return ret;
Jagan Tekid3c38282018-05-07 13:03:26 +0530513 }
514
Jagan Teki0dc33332018-08-06 12:16:39 +0530515 if (data->cfg->dedicated_clocks)
516 snprintf(name, sizeof(name), "usb%d_phy", i);
517 else
518 strlcpy(name, "usb_phy", sizeof(name));
519
520 ret = clk_get_by_name(dev, name, &phy->clocks);
521 if (ret) {
522 dev_err(dev, "failed to get usb%d_phy clock phandle\n", i);
523 return ret;
524 }
525
Andre Przywara720f4e42023-06-12 00:32:39 +0100526 /* Helper clock from PHY2 for the H616 PHY quirk */
527 snprintf(name, sizeof(name), "pmu%d_clk", i);
528 ret = clk_get_by_name_optional(dev, name, &phy->clk2);
529 if (ret) {
530 dev_err(dev, "failed to get pmu%d_clk clock phandle\n",
531 i);
532 return ret;
533 }
534
Jagan Teki0dc33332018-08-06 12:16:39 +0530535 snprintf(name, sizeof(name), "usb%d_reset", i);
536 ret = reset_get_by_name(dev, name, &phy->resets);
537 if (ret) {
538 dev_err(dev, "failed to get usb%d_reset reset phandle\n", i);
539 return ret;
540 }
541
Jagan Tekid3c38282018-05-07 13:03:26 +0530542 if (i || data->cfg->phy0_dual_route) {
543 snprintf(name, sizeof(name), "pmu%d", i);
Matthias Schiffer47331932023-09-27 15:33:34 +0200544 phy->pmu = (void __iomem *)dev_read_addr_name_ptr(dev, name);
545 if (!phy->pmu)
546 return -EINVAL;
Jagan Tekid3c38282018-05-07 13:03:26 +0530547 }
548
549 phy->id = i;
Jagan Tekid3c38282018-05-07 13:03:26 +0530550 };
551
Jagan Tekid3c38282018-05-07 13:03:26 +0530552 debug("Allwinner Sun4I USB PHY driver loaded\n");
553 return 0;
554}
555
Jagan Teki5a3000f2018-05-07 13:03:31 +0530556static const struct sun4i_usb_phy_cfg sun4i_a10_cfg = {
557 .num_phys = 3,
Jagan Teki5a3000f2018-05-07 13:03:31 +0530558 .disc_thresh = 3,
559 .phyctl_offset = REG_PHYCTL_A10,
Jagan Teki0dc33332018-08-06 12:16:39 +0530560 .dedicated_clocks = false,
Jagan Teki5a3000f2018-05-07 13:03:31 +0530561};
562
563static const struct sun4i_usb_phy_cfg sun5i_a13_cfg = {
564 .num_phys = 2,
Jagan Teki5a3000f2018-05-07 13:03:31 +0530565 .disc_thresh = 2,
566 .phyctl_offset = REG_PHYCTL_A10,
Jagan Teki0dc33332018-08-06 12:16:39 +0530567 .dedicated_clocks = false,
Jagan Teki5a3000f2018-05-07 13:03:31 +0530568};
569
Jagan Teki1cbc80c2018-05-07 13:03:32 +0530570static const struct sun4i_usb_phy_cfg sun6i_a31_cfg = {
571 .num_phys = 3,
Jagan Teki1cbc80c2018-05-07 13:03:32 +0530572 .disc_thresh = 3,
573 .phyctl_offset = REG_PHYCTL_A10,
Jagan Teki0dc33332018-08-06 12:16:39 +0530574 .dedicated_clocks = true,
Jagan Teki1cbc80c2018-05-07 13:03:32 +0530575};
576
Jagan Teki5a3000f2018-05-07 13:03:31 +0530577static const struct sun4i_usb_phy_cfg sun7i_a20_cfg = {
578 .num_phys = 3,
Jagan Teki5a3000f2018-05-07 13:03:31 +0530579 .disc_thresh = 2,
580 .phyctl_offset = REG_PHYCTL_A10,
Jagan Teki0dc33332018-08-06 12:16:39 +0530581 .dedicated_clocks = false,
Jagan Teki5a3000f2018-05-07 13:03:31 +0530582};
583
Jagan Teki00f9f6b2018-05-07 13:03:34 +0530584static const struct sun4i_usb_phy_cfg sun8i_a23_cfg = {
585 .num_phys = 2,
Jagan Teki00f9f6b2018-05-07 13:03:34 +0530586 .disc_thresh = 3,
587 .phyctl_offset = REG_PHYCTL_A10,
Jagan Teki0dc33332018-08-06 12:16:39 +0530588 .dedicated_clocks = true,
Jagan Teki00f9f6b2018-05-07 13:03:34 +0530589};
590
Jagan Teki0e574bb2018-05-07 13:03:33 +0530591static const struct sun4i_usb_phy_cfg sun8i_a33_cfg = {
592 .num_phys = 2,
Jagan Teki0e574bb2018-05-07 13:03:33 +0530593 .disc_thresh = 3,
594 .phyctl_offset = REG_PHYCTL_A33,
Jagan Teki0dc33332018-08-06 12:16:39 +0530595 .dedicated_clocks = true,
Jagan Teki0e574bb2018-05-07 13:03:33 +0530596};
597
Jagan Teki05a7b9f2018-05-07 13:03:30 +0530598static const struct sun4i_usb_phy_cfg sun8i_a83t_cfg = {
599 .num_phys = 3,
Andre Przywarab06b90f2023-06-12 00:32:38 +0100600 .hsic_index = 2,
Jagan Teki05a7b9f2018-05-07 13:03:30 +0530601 .phyctl_offset = REG_PHYCTL_A33,
Jagan Teki0dc33332018-08-06 12:16:39 +0530602 .dedicated_clocks = true,
Andre Przywarab06b90f2023-06-12 00:32:38 +0100603 .siddq_in_base = true,
Jagan Teki05a7b9f2018-05-07 13:03:30 +0530604};
605
Jagan Tekic1b0e5a2018-05-07 13:03:28 +0530606static const struct sun4i_usb_phy_cfg sun8i_h3_cfg = {
607 .num_phys = 4,
Jagan Tekic1b0e5a2018-05-07 13:03:28 +0530608 .disc_thresh = 3,
609 .phyctl_offset = REG_PHYCTL_A33,
Jagan Teki0dc33332018-08-06 12:16:39 +0530610 .dedicated_clocks = true,
Andre Przywara8662e7e2022-07-14 23:09:21 -0500611 .hci_phy_ctl_clear = PHY_CTL_H3_SIDDQ,
Jagan Tekic1b0e5a2018-05-07 13:03:28 +0530612 .phy0_dual_route = true,
613};
614
Andre Przywara47d49972020-01-01 23:44:48 +0000615static const struct sun4i_usb_phy_cfg sun8i_r40_cfg = {
616 .num_phys = 3,
Andre Przywara47d49972020-01-01 23:44:48 +0000617 .disc_thresh = 3,
618 .phyctl_offset = REG_PHYCTL_A33,
619 .dedicated_clocks = true,
Andre Przywara8662e7e2022-07-14 23:09:21 -0500620 .hci_phy_ctl_clear = PHY_CTL_H3_SIDDQ,
Andre Przywara47d49972020-01-01 23:44:48 +0000621 .phy0_dual_route = true,
622};
623
Jagan Tekiac4bab42018-05-07 13:03:29 +0530624static const struct sun4i_usb_phy_cfg sun8i_v3s_cfg = {
625 .num_phys = 1,
Jagan Tekiac4bab42018-05-07 13:03:29 +0530626 .disc_thresh = 3,
627 .phyctl_offset = REG_PHYCTL_A33,
Jagan Teki0dc33332018-08-06 12:16:39 +0530628 .dedicated_clocks = true,
Andre Przywara8662e7e2022-07-14 23:09:21 -0500629 .hci_phy_ctl_clear = PHY_CTL_H3_SIDDQ,
Jagan Tekiac4bab42018-05-07 13:03:29 +0530630 .phy0_dual_route = true,
631};
632
Samuel Holland9f30cce2022-07-14 23:09:22 -0500633static const struct sun4i_usb_phy_cfg sun20i_d1_cfg = {
634 .num_phys = 2,
Samuel Holland9f30cce2022-07-14 23:09:22 -0500635 .phyctl_offset = REG_PHYCTL_A33,
636 .dedicated_clocks = true,
637 .hci_phy_ctl_clear = PHY_CTL_SIDDQ,
638 .phy0_dual_route = true,
Andre Przywarab06b90f2023-06-12 00:32:38 +0100639 .siddq_in_base = true,
Samuel Holland9f30cce2022-07-14 23:09:22 -0500640};
641
Jagan Tekid3c38282018-05-07 13:03:26 +0530642static const struct sun4i_usb_phy_cfg sun50i_a64_cfg = {
643 .num_phys = 2,
Jagan Tekid3c38282018-05-07 13:03:26 +0530644 .disc_thresh = 3,
645 .phyctl_offset = REG_PHYCTL_A33,
Jagan Teki0dc33332018-08-06 12:16:39 +0530646 .dedicated_clocks = true,
Andre Przywara8662e7e2022-07-14 23:09:21 -0500647 .hci_phy_ctl_clear = PHY_CTL_H3_SIDDQ,
Jagan Tekid3c38282018-05-07 13:03:26 +0530648 .phy0_dual_route = true,
Andre Przywarab2f0f312019-06-23 15:09:49 +0100649};
650
651static const struct sun4i_usb_phy_cfg sun50i_h6_cfg = {
652 .num_phys = 4,
Andre Przywarab2f0f312019-06-23 15:09:49 +0100653 .disc_thresh = 3,
654 .phyctl_offset = REG_PHYCTL_A33,
655 .dedicated_clocks = true,
Andre Przywarab2f0f312019-06-23 15:09:49 +0100656 .phy0_dual_route = true,
Andre Przywarab06b90f2023-06-12 00:32:38 +0100657 .siddq_in_base = true,
Andre Przywarab2f0f312019-06-23 15:09:49 +0100658 .missing_phys = BIT(1) | BIT(2),
Jagan Tekid3c38282018-05-07 13:03:26 +0530659};
660
Andre Przywara8a3292a2023-06-12 00:32:40 +0100661static const struct sun4i_usb_phy_cfg sun50i_h616_cfg = {
662 .num_phys = 4,
663 .disc_thresh = 3,
664 .phyctl_offset = REG_PHYCTL_A33,
665 .dedicated_clocks = true,
666 .phy0_dual_route = true,
667 .hci_phy_ctl_clear = PHY_CTL_SIDDQ,
668 .needs_phy2_siddq = true,
669 .siddq_in_base = true,
670};
671
Andre Przywaraab81b0f2023-06-12 00:32:36 +0100672static const struct sun4i_usb_phy_cfg suniv_f1c100s_cfg = {
673 .num_phys = 1,
Andre Przywaraab81b0f2023-06-12 00:32:36 +0100674 .disc_thresh = 3,
675 .phyctl_offset = REG_PHYCTL_A10,
676 .dedicated_clocks = true,
677};
678
Jagan Tekid3c38282018-05-07 13:03:26 +0530679static const struct udevice_id sun4i_usb_phy_ids[] = {
Jagan Teki5a3000f2018-05-07 13:03:31 +0530680 { .compatible = "allwinner,sun4i-a10-usb-phy", .data = (ulong)&sun4i_a10_cfg },
681 { .compatible = "allwinner,sun5i-a13-usb-phy", .data = (ulong)&sun5i_a13_cfg },
Jagan Teki1cbc80c2018-05-07 13:03:32 +0530682 { .compatible = "allwinner,sun6i-a31-usb-phy", .data = (ulong)&sun6i_a31_cfg },
Jagan Teki5a3000f2018-05-07 13:03:31 +0530683 { .compatible = "allwinner,sun7i-a20-usb-phy", .data = (ulong)&sun7i_a20_cfg },
Jagan Teki00f9f6b2018-05-07 13:03:34 +0530684 { .compatible = "allwinner,sun8i-a23-usb-phy", .data = (ulong)&sun8i_a23_cfg },
Jagan Teki0e574bb2018-05-07 13:03:33 +0530685 { .compatible = "allwinner,sun8i-a33-usb-phy", .data = (ulong)&sun8i_a33_cfg },
Jagan Teki05a7b9f2018-05-07 13:03:30 +0530686 { .compatible = "allwinner,sun8i-a83t-usb-phy", .data = (ulong)&sun8i_a83t_cfg },
Jagan Tekic1b0e5a2018-05-07 13:03:28 +0530687 { .compatible = "allwinner,sun8i-h3-usb-phy", .data = (ulong)&sun8i_h3_cfg },
Andre Przywara47d49972020-01-01 23:44:48 +0000688 { .compatible = "allwinner,sun8i-r40-usb-phy", .data = (ulong)&sun8i_r40_cfg },
Jagan Tekiac4bab42018-05-07 13:03:29 +0530689 { .compatible = "allwinner,sun8i-v3s-usb-phy", .data = (ulong)&sun8i_v3s_cfg },
Samuel Holland9f30cce2022-07-14 23:09:22 -0500690 { .compatible = "allwinner,sun20i-d1-usb-phy", .data = (ulong)&sun20i_d1_cfg },
Jagan Tekid3c38282018-05-07 13:03:26 +0530691 { .compatible = "allwinner,sun50i-a64-usb-phy", .data = (ulong)&sun50i_a64_cfg},
Andre Przywarab2f0f312019-06-23 15:09:49 +0100692 { .compatible = "allwinner,sun50i-h6-usb-phy", .data = (ulong)&sun50i_h6_cfg},
Andre Przywara8a3292a2023-06-12 00:32:40 +0100693 { .compatible = "allwinner,sun50i-h616-usb-phy", .data = (ulong)&sun50i_h616_cfg },
Andre Przywaraab81b0f2023-06-12 00:32:36 +0100694 { .compatible = "allwinner,suniv-f1c100s-usb-phy", .data = (ulong)&suniv_f1c100s_cfg },
Jagan Tekid3c38282018-05-07 13:03:26 +0530695 { }
696};
697
698U_BOOT_DRIVER(sun4i_usb_phy) = {
699 .name = "sun4i_usb_phy",
700 .id = UCLASS_PHY,
701 .of_match = sun4i_usb_phy_ids,
702 .ops = &sun4i_usb_phy_ops,
703 .probe = sun4i_usb_phy_probe,
Simon Glass71fa5b42020-12-03 16:55:18 -0700704 .plat_auto = sizeof(struct sun4i_usb_phy_plat[MAX_PHYS]),
Simon Glass8a2b47f2020-12-03 16:55:17 -0700705 .priv_auto = sizeof(struct sun4i_usb_phy_data),
Jagan Tekid3c38282018-05-07 13:03:26 +0530706};