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Tom Rini10e47792018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +09002/*
3 * Copyright (C) 2016 Socionext Inc.
4 * Author: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +09005 */
6
7#include <common.h>
Simon Glass11c89f32017-05-17 17:18:03 -06008#include <dm.h>
Simon Glass0f2af882020-05-10 11:40:05 -06009#include <log.h>
Simon Glass9bc15642020-02-03 07:36:16 -070010#include <malloc.h>
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +090011#include <reset-uclass.h>
Simon Glass9bc15642020-02-03 07:36:16 -070012#include <dm/device_compat.h>
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +090013#include <linux/bitops.h>
14#include <linux/io.h>
15#include <linux/sizes.h>
16
17struct uniphier_reset_data {
18 unsigned int id;
19 unsigned int reg;
20 unsigned int bit;
21 unsigned int flags;
22#define UNIPHIER_RESET_ACTIVE_LOW BIT(0)
23};
24
25#define UNIPHIER_RESET_ID_END (unsigned int)(-1)
26
27#define UNIPHIER_RESET_END \
28 { .id = UNIPHIER_RESET_ID_END }
29
30#define UNIPHIER_RESET(_id, _reg, _bit) \
31 { \
32 .id = (_id), \
33 .reg = (_reg), \
34 .bit = (_bit), \
35 }
36
37#define UNIPHIER_RESETX(_id, _reg, _bit) \
38 { \
39 .id = (_id), \
40 .reg = (_reg), \
41 .bit = (_bit), \
42 .flags = UNIPHIER_RESET_ACTIVE_LOW, \
43 }
44
45/* System reset data */
Masahiro Yamada5e05c4d2017-06-22 16:42:04 +090046static const struct uniphier_reset_data uniphier_pro4_sys_reset_data[] = {
Masahiro Yamada0eb2cec2017-08-13 09:01:16 +090047 UNIPHIER_RESETX(2, 0x2000, 2), /* NAND */
Kunihiko Hayashi6cce8372018-04-18 10:06:07 +090048 UNIPHIER_RESETX(6, 0x2000, 12), /* ETHER */
Masahiro Yamada0eb2cec2017-08-13 09:01:16 +090049 UNIPHIER_RESETX(8, 0x2000, 10), /* STDMAC */
50 UNIPHIER_RESETX(12, 0x2000, 6), /* GIO */
51 UNIPHIER_RESETX(14, 0x2000, 17), /* USB30 */
52 UNIPHIER_RESETX(15, 0x2004, 17), /* USB31 */
Kunihiko Hayashi2dcb4692021-07-06 19:01:07 +090053 UNIPHIER_RESETX(24, 0x2008, 2), /* PCIE */
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +090054 UNIPHIER_RESET_END,
55};
56
Masahiro Yamada5e05c4d2017-06-22 16:42:04 +090057static const struct uniphier_reset_data uniphier_pxs2_sys_reset_data[] = {
Masahiro Yamada0eb2cec2017-08-13 09:01:16 +090058 UNIPHIER_RESETX(2, 0x2000, 2), /* NAND */
Kunihiko Hayashi6cce8372018-04-18 10:06:07 +090059 UNIPHIER_RESETX(6, 0x2000, 12), /* ETHER */
Masahiro Yamada0eb2cec2017-08-13 09:01:16 +090060 UNIPHIER_RESETX(8, 0x2000, 10), /* STDMAC */
61 UNIPHIER_RESETX(14, 0x2000, 17), /* USB30 */
62 UNIPHIER_RESETX(15, 0x2004, 17), /* USB31 */
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +090063 UNIPHIER_RESETX(16, 0x2014, 4), /* USB30-PHY0 */
64 UNIPHIER_RESETX(17, 0x2014, 0), /* USB30-PHY1 */
65 UNIPHIER_RESETX(18, 0x2014, 2), /* USB30-PHY2 */
66 UNIPHIER_RESETX(20, 0x2014, 5), /* USB31-PHY0 */
67 UNIPHIER_RESETX(21, 0x2014, 1), /* USB31-PHY1 */
68 UNIPHIER_RESETX(28, 0x2014, 12), /* SATA */
69 UNIPHIER_RESET(29, 0x2014, 8), /* SATA-PHY (active high) */
70 UNIPHIER_RESET_END,
71};
72
Masahiro Yamada5e05c4d2017-06-22 16:42:04 +090073static const struct uniphier_reset_data uniphier_ld20_sys_reset_data[] = {
Masahiro Yamada0eb2cec2017-08-13 09:01:16 +090074 UNIPHIER_RESETX(2, 0x200c, 0), /* NAND */
75 UNIPHIER_RESETX(4, 0x200c, 2), /* eMMC */
Kunihiko Hayashi6cce8372018-04-18 10:06:07 +090076 UNIPHIER_RESETX(6, 0x200c, 6), /* ETHER */
Masahiro Yamada0eb2cec2017-08-13 09:01:16 +090077 UNIPHIER_RESETX(8, 0x200c, 8), /* STDMAC */
Masahiro Yamada096c4662018-06-19 16:11:43 +090078 UNIPHIER_RESETX(14, 0x200c, 5), /* USB30 */
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +090079 UNIPHIER_RESETX(16, 0x200c, 12), /* USB30-PHY0 */
80 UNIPHIER_RESETX(17, 0x200c, 13), /* USB30-PHY1 */
81 UNIPHIER_RESETX(18, 0x200c, 14), /* USB30-PHY2 */
82 UNIPHIER_RESETX(19, 0x200c, 15), /* USB30-PHY3 */
Kunihiko Hayashi2dcb4692021-07-06 19:01:07 +090083 UNIPHIER_RESETX(24, 0x200c, 4), /* PCIE */
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +090084 UNIPHIER_RESET_END,
85};
86
Masahiro Yamada8eb6a1c2017-08-29 12:20:51 +090087static const struct uniphier_reset_data uniphier_pxs3_sys_reset_data[] = {
88 UNIPHIER_RESETX(2, 0x200c, 0), /* NAND */
89 UNIPHIER_RESETX(4, 0x200c, 2), /* eMMC */
Kunihiko Hayashi6cce8372018-04-18 10:06:07 +090090 UNIPHIER_RESETX(6, 0x200c, 9), /* ETHER0 */
91 UNIPHIER_RESETX(7, 0x200c, 10), /* ETHER1 */
Masahiro Yamada8eb6a1c2017-08-29 12:20:51 +090092 UNIPHIER_RESETX(8, 0x200c, 12), /* STDMAC */
Masahiro Yamada096c4662018-06-19 16:11:43 +090093 UNIPHIER_RESETX(12, 0x200c, 4), /* USB30 link */
94 UNIPHIER_RESETX(13, 0x200c, 5), /* USB31 link */
95 UNIPHIER_RESETX(16, 0x200c, 16), /* USB30-PHY0 */
96 UNIPHIER_RESETX(17, 0x200c, 18), /* USB30-PHY1 */
97 UNIPHIER_RESETX(18, 0x200c, 20), /* USB30-PHY2 */
98 UNIPHIER_RESETX(20, 0x200c, 17), /* USB31-PHY0 */
99 UNIPHIER_RESETX(21, 0x200c, 19), /* USB31-PHY1 */
Kunihiko Hayashi2dcb4692021-07-06 19:01:07 +0900100 UNIPHIER_RESETX(24, 0x200c, 3), /* PCIE */
Masahiro Yamada8eb6a1c2017-08-29 12:20:51 +0900101 UNIPHIER_RESET_END,
102};
103
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900104/* Media I/O reset data */
105#define UNIPHIER_MIO_RESET_SD(id, ch) \
106 UNIPHIER_RESETX((id), 0x110 + 0x200 * (ch), 0)
107
108#define UNIPHIER_MIO_RESET_SD_BRIDGE(id, ch) \
109 UNIPHIER_RESETX((id), 0x110 + 0x200 * (ch), 26)
110
111#define UNIPHIER_MIO_RESET_EMMC_HW_RESET(id, ch) \
112 UNIPHIER_RESETX((id), 0x80 + 0x200 * (ch), 0)
113
114#define UNIPHIER_MIO_RESET_USB2(id, ch) \
115 UNIPHIER_RESETX((id), 0x114 + 0x200 * (ch), 0)
116
117#define UNIPHIER_MIO_RESET_USB2_BRIDGE(id, ch) \
118 UNIPHIER_RESETX((id), 0x110 + 0x200 * (ch), 24)
119
120#define UNIPHIER_MIO_RESET_DMAC(id) \
121 UNIPHIER_RESETX((id), 0x110, 17)
122
Masahiro Yamada5e05c4d2017-06-22 16:42:04 +0900123static const struct uniphier_reset_data uniphier_mio_reset_data[] = {
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900124 UNIPHIER_MIO_RESET_SD(0, 0),
125 UNIPHIER_MIO_RESET_SD(1, 1),
126 UNIPHIER_MIO_RESET_SD(2, 2),
127 UNIPHIER_MIO_RESET_SD_BRIDGE(3, 0),
128 UNIPHIER_MIO_RESET_SD_BRIDGE(4, 1),
129 UNIPHIER_MIO_RESET_SD_BRIDGE(5, 2),
130 UNIPHIER_MIO_RESET_EMMC_HW_RESET(6, 1),
131 UNIPHIER_MIO_RESET_DMAC(7),
132 UNIPHIER_MIO_RESET_USB2(8, 0),
133 UNIPHIER_MIO_RESET_USB2(9, 1),
134 UNIPHIER_MIO_RESET_USB2(10, 2),
135 UNIPHIER_MIO_RESET_USB2(11, 3),
136 UNIPHIER_MIO_RESET_USB2_BRIDGE(12, 0),
137 UNIPHIER_MIO_RESET_USB2_BRIDGE(13, 1),
138 UNIPHIER_MIO_RESET_USB2_BRIDGE(14, 2),
139 UNIPHIER_MIO_RESET_USB2_BRIDGE(15, 3),
140 UNIPHIER_RESET_END,
141};
142
143/* Peripheral reset data */
144#define UNIPHIER_PERI_RESET_UART(id, ch) \
145 UNIPHIER_RESETX((id), 0x114, 19 + (ch))
146
147#define UNIPHIER_PERI_RESET_I2C(id, ch) \
148 UNIPHIER_RESETX((id), 0x114, 5 + (ch))
149
150#define UNIPHIER_PERI_RESET_FI2C(id, ch) \
151 UNIPHIER_RESETX((id), 0x114, 24 + (ch))
152
Masahiro Yamada5e05c4d2017-06-22 16:42:04 +0900153static const struct uniphier_reset_data uniphier_ld4_peri_reset_data[] = {
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900154 UNIPHIER_PERI_RESET_UART(0, 0),
155 UNIPHIER_PERI_RESET_UART(1, 1),
156 UNIPHIER_PERI_RESET_UART(2, 2),
157 UNIPHIER_PERI_RESET_UART(3, 3),
158 UNIPHIER_PERI_RESET_I2C(4, 0),
159 UNIPHIER_PERI_RESET_I2C(5, 1),
160 UNIPHIER_PERI_RESET_I2C(6, 2),
161 UNIPHIER_PERI_RESET_I2C(7, 3),
162 UNIPHIER_PERI_RESET_I2C(8, 4),
163 UNIPHIER_RESET_END,
164};
165
Masahiro Yamada5e05c4d2017-06-22 16:42:04 +0900166static const struct uniphier_reset_data uniphier_pro4_peri_reset_data[] = {
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900167 UNIPHIER_PERI_RESET_UART(0, 0),
168 UNIPHIER_PERI_RESET_UART(1, 1),
169 UNIPHIER_PERI_RESET_UART(2, 2),
170 UNIPHIER_PERI_RESET_UART(3, 3),
171 UNIPHIER_PERI_RESET_FI2C(4, 0),
172 UNIPHIER_PERI_RESET_FI2C(5, 1),
173 UNIPHIER_PERI_RESET_FI2C(6, 2),
174 UNIPHIER_PERI_RESET_FI2C(7, 3),
175 UNIPHIER_PERI_RESET_FI2C(8, 4),
176 UNIPHIER_PERI_RESET_FI2C(9, 5),
177 UNIPHIER_PERI_RESET_FI2C(10, 6),
178 UNIPHIER_RESET_END,
179};
180
181/* core implementaton */
182struct uniphier_reset_priv {
183 void __iomem *base;
184 const struct uniphier_reset_data *data;
185};
186
187static int uniphier_reset_request(struct reset_ctl *reset_ctl)
188{
189 return 0;
190}
191
192static int uniphier_reset_free(struct reset_ctl *reset_ctl)
193{
194 return 0;
195}
196
197static int uniphier_reset_update(struct reset_ctl *reset_ctl, int assert)
198{
199 struct uniphier_reset_priv *priv = dev_get_priv(reset_ctl->dev);
200 unsigned long id = reset_ctl->id;
201 const struct uniphier_reset_data *p;
202
203 for (p = priv->data; p->id != UNIPHIER_RESET_ID_END; p++) {
204 u32 mask, val;
205
206 if (p->id != id)
207 continue;
208
209 val = readl(priv->base + p->reg);
210
211 if (p->flags & UNIPHIER_RESET_ACTIVE_LOW)
212 assert = !assert;
213
214 mask = BIT(p->bit);
215
216 if (assert)
217 val |= mask;
218 else
219 val &= ~mask;
220
221 writel(val, priv->base + p->reg);
222
223 return 0;
224 }
225
Masahiro Yamada63f42e32017-10-13 19:22:02 +0900226 dev_err(reset_ctl->dev, "reset_id=%lu was not handled\n", id);
227
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900228 return -EINVAL;
229}
230
231static int uniphier_reset_assert(struct reset_ctl *reset_ctl)
232{
233 return uniphier_reset_update(reset_ctl, 1);
234}
235
236static int uniphier_reset_deassert(struct reset_ctl *reset_ctl)
237{
238 return uniphier_reset_update(reset_ctl, 0);
239}
240
241static const struct reset_ops uniphier_reset_ops = {
242 .request = uniphier_reset_request,
Simon Glass1928cd42020-02-03 07:35:52 -0700243 .rfree = uniphier_reset_free,
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900244 .rst_assert = uniphier_reset_assert,
245 .rst_deassert = uniphier_reset_deassert,
246};
247
248static int uniphier_reset_probe(struct udevice *dev)
249{
250 struct uniphier_reset_priv *priv = dev_get_priv(dev);
251 fdt_addr_t addr;
252
Masahiro Yamadaa89b4de2020-07-17 14:36:48 +0900253 addr = dev_read_addr(dev->parent);
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900254 if (addr == FDT_ADDR_T_NONE)
255 return -EINVAL;
256
257 priv->base = devm_ioremap(dev, addr, SZ_4K);
258 if (!priv->base)
259 return -ENOMEM;
260
261 priv->data = (void *)dev_get_driver_data(dev);
262
263 return 0;
264}
265
266static const struct udevice_id uniphier_reset_match[] = {
267 /* System reset */
268 {
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900269 .compatible = "socionext,uniphier-ld4-reset",
Masahiro Yamada0eb2cec2017-08-13 09:01:16 +0900270 .data = (ulong)uniphier_pro4_sys_reset_data,
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900271 },
272 {
273 .compatible = "socionext,uniphier-pro4-reset",
274 .data = (ulong)uniphier_pro4_sys_reset_data,
275 },
276 {
277 .compatible = "socionext,uniphier-sld8-reset",
Masahiro Yamada0eb2cec2017-08-13 09:01:16 +0900278 .data = (ulong)uniphier_pro4_sys_reset_data,
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900279 },
280 {
281 .compatible = "socionext,uniphier-pro5-reset",
Masahiro Yamada0eb2cec2017-08-13 09:01:16 +0900282 .data = (ulong)uniphier_pro4_sys_reset_data,
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900283 },
284 {
285 .compatible = "socionext,uniphier-pxs2-reset",
286 .data = (ulong)uniphier_pxs2_sys_reset_data,
287 },
288 {
289 .compatible = "socionext,uniphier-ld11-reset",
Masahiro Yamada0eb2cec2017-08-13 09:01:16 +0900290 .data = (ulong)uniphier_ld20_sys_reset_data,
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900291 },
292 {
293 .compatible = "socionext,uniphier-ld20-reset",
294 .data = (ulong)uniphier_ld20_sys_reset_data,
295 },
Masahiro Yamada8eb6a1c2017-08-29 12:20:51 +0900296 {
297 .compatible = "socionext,uniphier-pxs3-reset",
298 .data = (ulong)uniphier_pxs3_sys_reset_data,
299 },
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900300 /* Media I/O reset */
301 {
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900302 .compatible = "socionext,uniphier-ld4-mio-reset",
303 .data = (ulong)uniphier_mio_reset_data,
304 },
305 {
306 .compatible = "socionext,uniphier-pro4-mio-reset",
307 .data = (ulong)uniphier_mio_reset_data,
308 },
309 {
310 .compatible = "socionext,uniphier-sld8-mio-reset",
311 .data = (ulong)uniphier_mio_reset_data,
312 },
313 {
314 .compatible = "socionext,uniphier-pro5-mio-reset",
315 .data = (ulong)uniphier_mio_reset_data,
316 },
317 {
318 .compatible = "socionext,uniphier-pxs2-mio-reset",
319 .data = (ulong)uniphier_mio_reset_data,
320 },
321 {
322 .compatible = "socionext,uniphier-ld11-mio-reset",
323 .data = (ulong)uniphier_mio_reset_data,
324 },
325 {
Masahiro Yamada68199a22017-08-29 12:20:50 +0900326 .compatible = "socionext,uniphier-ld11-sd-reset",
327 .data = (ulong)uniphier_mio_reset_data,
328 },
329 {
330 .compatible = "socionext,uniphier-ld20-sd-reset",
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900331 .data = (ulong)uniphier_mio_reset_data,
332 },
Masahiro Yamada8eb6a1c2017-08-29 12:20:51 +0900333 {
334 .compatible = "socionext,uniphier-pxs3-sd-reset",
335 .data = (ulong)uniphier_mio_reset_data,
336 },
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900337 /* Peripheral reset */
338 {
339 .compatible = "socionext,uniphier-ld4-peri-reset",
340 .data = (ulong)uniphier_ld4_peri_reset_data,
341 },
342 {
343 .compatible = "socionext,uniphier-pro4-peri-reset",
344 .data = (ulong)uniphier_pro4_peri_reset_data,
345 },
346 {
347 .compatible = "socionext,uniphier-sld8-peri-reset",
348 .data = (ulong)uniphier_ld4_peri_reset_data,
349 },
350 {
351 .compatible = "socionext,uniphier-pro5-peri-reset",
352 .data = (ulong)uniphier_pro4_peri_reset_data,
353 },
354 {
355 .compatible = "socionext,uniphier-pxs2-peri-reset",
356 .data = (ulong)uniphier_pro4_peri_reset_data,
357 },
358 {
359 .compatible = "socionext,uniphier-ld11-peri-reset",
360 .data = (ulong)uniphier_pro4_peri_reset_data,
361 },
362 {
363 .compatible = "socionext,uniphier-ld20-peri-reset",
364 .data = (ulong)uniphier_pro4_peri_reset_data,
365 },
Masahiro Yamada8eb6a1c2017-08-29 12:20:51 +0900366 {
367 .compatible = "socionext,uniphier-pxs3-peri-reset",
368 .data = (ulong)uniphier_pro4_peri_reset_data,
369 },
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900370 { /* sentinel */ }
371};
372
373U_BOOT_DRIVER(uniphier_reset) = {
374 .name = "uniphier-reset",
375 .id = UCLASS_RESET,
376 .of_match = uniphier_reset_match,
377 .probe = uniphier_reset_probe,
Simon Glass8a2b47f2020-12-03 16:55:17 -0700378 .priv_auto = sizeof(struct uniphier_reset_priv),
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900379 .ops = &uniphier_reset_ops,
380};