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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>
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +09009#include <reset-uclass.h>
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +090010#include <linux/bitops.h>
11#include <linux/io.h>
12#include <linux/sizes.h>
13
14struct uniphier_reset_data {
15 unsigned int id;
16 unsigned int reg;
17 unsigned int bit;
18 unsigned int flags;
19#define UNIPHIER_RESET_ACTIVE_LOW BIT(0)
20};
21
22#define UNIPHIER_RESET_ID_END (unsigned int)(-1)
23
24#define UNIPHIER_RESET_END \
25 { .id = UNIPHIER_RESET_ID_END }
26
27#define UNIPHIER_RESET(_id, _reg, _bit) \
28 { \
29 .id = (_id), \
30 .reg = (_reg), \
31 .bit = (_bit), \
32 }
33
34#define UNIPHIER_RESETX(_id, _reg, _bit) \
35 { \
36 .id = (_id), \
37 .reg = (_reg), \
38 .bit = (_bit), \
39 .flags = UNIPHIER_RESET_ACTIVE_LOW, \
40 }
41
42/* System reset data */
Masahiro Yamada5e05c4d2017-06-22 16:42:04 +090043static const struct uniphier_reset_data uniphier_pro4_sys_reset_data[] = {
Masahiro Yamada0eb2cec2017-08-13 09:01:16 +090044 UNIPHIER_RESETX(2, 0x2000, 2), /* NAND */
Kunihiko Hayashi6cce8372018-04-18 10:06:07 +090045 UNIPHIER_RESETX(6, 0x2000, 12), /* ETHER */
Masahiro Yamada0eb2cec2017-08-13 09:01:16 +090046 UNIPHIER_RESETX(8, 0x2000, 10), /* STDMAC */
47 UNIPHIER_RESETX(12, 0x2000, 6), /* GIO */
48 UNIPHIER_RESETX(14, 0x2000, 17), /* USB30 */
49 UNIPHIER_RESETX(15, 0x2004, 17), /* USB31 */
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +090050 UNIPHIER_RESET_END,
51};
52
Masahiro Yamada5e05c4d2017-06-22 16:42:04 +090053static const struct uniphier_reset_data uniphier_pxs2_sys_reset_data[] = {
Masahiro Yamada0eb2cec2017-08-13 09:01:16 +090054 UNIPHIER_RESETX(2, 0x2000, 2), /* NAND */
Kunihiko Hayashi6cce8372018-04-18 10:06:07 +090055 UNIPHIER_RESETX(6, 0x2000, 12), /* ETHER */
Masahiro Yamada0eb2cec2017-08-13 09:01:16 +090056 UNIPHIER_RESETX(8, 0x2000, 10), /* STDMAC */
57 UNIPHIER_RESETX(14, 0x2000, 17), /* USB30 */
58 UNIPHIER_RESETX(15, 0x2004, 17), /* USB31 */
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +090059 UNIPHIER_RESETX(16, 0x2014, 4), /* USB30-PHY0 */
60 UNIPHIER_RESETX(17, 0x2014, 0), /* USB30-PHY1 */
61 UNIPHIER_RESETX(18, 0x2014, 2), /* USB30-PHY2 */
62 UNIPHIER_RESETX(20, 0x2014, 5), /* USB31-PHY0 */
63 UNIPHIER_RESETX(21, 0x2014, 1), /* USB31-PHY1 */
64 UNIPHIER_RESETX(28, 0x2014, 12), /* SATA */
65 UNIPHIER_RESET(29, 0x2014, 8), /* SATA-PHY (active high) */
66 UNIPHIER_RESET_END,
67};
68
Masahiro Yamada5e05c4d2017-06-22 16:42:04 +090069static const struct uniphier_reset_data uniphier_ld20_sys_reset_data[] = {
Masahiro Yamada0eb2cec2017-08-13 09:01:16 +090070 UNIPHIER_RESETX(2, 0x200c, 0), /* NAND */
71 UNIPHIER_RESETX(4, 0x200c, 2), /* eMMC */
Kunihiko Hayashi6cce8372018-04-18 10:06:07 +090072 UNIPHIER_RESETX(6, 0x200c, 6), /* ETHER */
Masahiro Yamada0eb2cec2017-08-13 09:01:16 +090073 UNIPHIER_RESETX(8, 0x200c, 8), /* STDMAC */
Masahiro Yamada096c4662018-06-19 16:11:43 +090074 UNIPHIER_RESETX(14, 0x200c, 5), /* USB30 */
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +090075 UNIPHIER_RESETX(16, 0x200c, 12), /* USB30-PHY0 */
76 UNIPHIER_RESETX(17, 0x200c, 13), /* USB30-PHY1 */
77 UNIPHIER_RESETX(18, 0x200c, 14), /* USB30-PHY2 */
78 UNIPHIER_RESETX(19, 0x200c, 15), /* USB30-PHY3 */
79 UNIPHIER_RESET_END,
80};
81
Masahiro Yamada8eb6a1c2017-08-29 12:20:51 +090082static const struct uniphier_reset_data uniphier_pxs3_sys_reset_data[] = {
83 UNIPHIER_RESETX(2, 0x200c, 0), /* NAND */
84 UNIPHIER_RESETX(4, 0x200c, 2), /* eMMC */
Kunihiko Hayashi6cce8372018-04-18 10:06:07 +090085 UNIPHIER_RESETX(6, 0x200c, 9), /* ETHER0 */
86 UNIPHIER_RESETX(7, 0x200c, 10), /* ETHER1 */
Masahiro Yamada8eb6a1c2017-08-29 12:20:51 +090087 UNIPHIER_RESETX(8, 0x200c, 12), /* STDMAC */
Masahiro Yamada096c4662018-06-19 16:11:43 +090088 UNIPHIER_RESETX(12, 0x200c, 4), /* USB30 link */
89 UNIPHIER_RESETX(13, 0x200c, 5), /* USB31 link */
90 UNIPHIER_RESETX(16, 0x200c, 16), /* USB30-PHY0 */
91 UNIPHIER_RESETX(17, 0x200c, 18), /* USB30-PHY1 */
92 UNIPHIER_RESETX(18, 0x200c, 20), /* USB30-PHY2 */
93 UNIPHIER_RESETX(20, 0x200c, 17), /* USB31-PHY0 */
94 UNIPHIER_RESETX(21, 0x200c, 19), /* USB31-PHY1 */
Masahiro Yamada8eb6a1c2017-08-29 12:20:51 +090095 UNIPHIER_RESET_END,
96};
97
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +090098/* Media I/O reset data */
99#define UNIPHIER_MIO_RESET_SD(id, ch) \
100 UNIPHIER_RESETX((id), 0x110 + 0x200 * (ch), 0)
101
102#define UNIPHIER_MIO_RESET_SD_BRIDGE(id, ch) \
103 UNIPHIER_RESETX((id), 0x110 + 0x200 * (ch), 26)
104
105#define UNIPHIER_MIO_RESET_EMMC_HW_RESET(id, ch) \
106 UNIPHIER_RESETX((id), 0x80 + 0x200 * (ch), 0)
107
108#define UNIPHIER_MIO_RESET_USB2(id, ch) \
109 UNIPHIER_RESETX((id), 0x114 + 0x200 * (ch), 0)
110
111#define UNIPHIER_MIO_RESET_USB2_BRIDGE(id, ch) \
112 UNIPHIER_RESETX((id), 0x110 + 0x200 * (ch), 24)
113
114#define UNIPHIER_MIO_RESET_DMAC(id) \
115 UNIPHIER_RESETX((id), 0x110, 17)
116
Masahiro Yamada5e05c4d2017-06-22 16:42:04 +0900117static const struct uniphier_reset_data uniphier_mio_reset_data[] = {
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900118 UNIPHIER_MIO_RESET_SD(0, 0),
119 UNIPHIER_MIO_RESET_SD(1, 1),
120 UNIPHIER_MIO_RESET_SD(2, 2),
121 UNIPHIER_MIO_RESET_SD_BRIDGE(3, 0),
122 UNIPHIER_MIO_RESET_SD_BRIDGE(4, 1),
123 UNIPHIER_MIO_RESET_SD_BRIDGE(5, 2),
124 UNIPHIER_MIO_RESET_EMMC_HW_RESET(6, 1),
125 UNIPHIER_MIO_RESET_DMAC(7),
126 UNIPHIER_MIO_RESET_USB2(8, 0),
127 UNIPHIER_MIO_RESET_USB2(9, 1),
128 UNIPHIER_MIO_RESET_USB2(10, 2),
129 UNIPHIER_MIO_RESET_USB2(11, 3),
130 UNIPHIER_MIO_RESET_USB2_BRIDGE(12, 0),
131 UNIPHIER_MIO_RESET_USB2_BRIDGE(13, 1),
132 UNIPHIER_MIO_RESET_USB2_BRIDGE(14, 2),
133 UNIPHIER_MIO_RESET_USB2_BRIDGE(15, 3),
134 UNIPHIER_RESET_END,
135};
136
137/* Peripheral reset data */
138#define UNIPHIER_PERI_RESET_UART(id, ch) \
139 UNIPHIER_RESETX((id), 0x114, 19 + (ch))
140
141#define UNIPHIER_PERI_RESET_I2C(id, ch) \
142 UNIPHIER_RESETX((id), 0x114, 5 + (ch))
143
144#define UNIPHIER_PERI_RESET_FI2C(id, ch) \
145 UNIPHIER_RESETX((id), 0x114, 24 + (ch))
146
Masahiro Yamada5e05c4d2017-06-22 16:42:04 +0900147static const struct uniphier_reset_data uniphier_ld4_peri_reset_data[] = {
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900148 UNIPHIER_PERI_RESET_UART(0, 0),
149 UNIPHIER_PERI_RESET_UART(1, 1),
150 UNIPHIER_PERI_RESET_UART(2, 2),
151 UNIPHIER_PERI_RESET_UART(3, 3),
152 UNIPHIER_PERI_RESET_I2C(4, 0),
153 UNIPHIER_PERI_RESET_I2C(5, 1),
154 UNIPHIER_PERI_RESET_I2C(6, 2),
155 UNIPHIER_PERI_RESET_I2C(7, 3),
156 UNIPHIER_PERI_RESET_I2C(8, 4),
157 UNIPHIER_RESET_END,
158};
159
Masahiro Yamada5e05c4d2017-06-22 16:42:04 +0900160static const struct uniphier_reset_data uniphier_pro4_peri_reset_data[] = {
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900161 UNIPHIER_PERI_RESET_UART(0, 0),
162 UNIPHIER_PERI_RESET_UART(1, 1),
163 UNIPHIER_PERI_RESET_UART(2, 2),
164 UNIPHIER_PERI_RESET_UART(3, 3),
165 UNIPHIER_PERI_RESET_FI2C(4, 0),
166 UNIPHIER_PERI_RESET_FI2C(5, 1),
167 UNIPHIER_PERI_RESET_FI2C(6, 2),
168 UNIPHIER_PERI_RESET_FI2C(7, 3),
169 UNIPHIER_PERI_RESET_FI2C(8, 4),
170 UNIPHIER_PERI_RESET_FI2C(9, 5),
171 UNIPHIER_PERI_RESET_FI2C(10, 6),
172 UNIPHIER_RESET_END,
173};
174
175/* core implementaton */
176struct uniphier_reset_priv {
177 void __iomem *base;
178 const struct uniphier_reset_data *data;
179};
180
181static int uniphier_reset_request(struct reset_ctl *reset_ctl)
182{
183 return 0;
184}
185
186static int uniphier_reset_free(struct reset_ctl *reset_ctl)
187{
188 return 0;
189}
190
191static int uniphier_reset_update(struct reset_ctl *reset_ctl, int assert)
192{
193 struct uniphier_reset_priv *priv = dev_get_priv(reset_ctl->dev);
194 unsigned long id = reset_ctl->id;
195 const struct uniphier_reset_data *p;
196
197 for (p = priv->data; p->id != UNIPHIER_RESET_ID_END; p++) {
198 u32 mask, val;
199
200 if (p->id != id)
201 continue;
202
203 val = readl(priv->base + p->reg);
204
205 if (p->flags & UNIPHIER_RESET_ACTIVE_LOW)
206 assert = !assert;
207
208 mask = BIT(p->bit);
209
210 if (assert)
211 val |= mask;
212 else
213 val &= ~mask;
214
215 writel(val, priv->base + p->reg);
216
217 return 0;
218 }
219
Masahiro Yamada63f42e32017-10-13 19:22:02 +0900220 dev_err(reset_ctl->dev, "reset_id=%lu was not handled\n", id);
221
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900222 return -EINVAL;
223}
224
225static int uniphier_reset_assert(struct reset_ctl *reset_ctl)
226{
227 return uniphier_reset_update(reset_ctl, 1);
228}
229
230static int uniphier_reset_deassert(struct reset_ctl *reset_ctl)
231{
232 return uniphier_reset_update(reset_ctl, 0);
233}
234
235static const struct reset_ops uniphier_reset_ops = {
236 .request = uniphier_reset_request,
237 .free = uniphier_reset_free,
238 .rst_assert = uniphier_reset_assert,
239 .rst_deassert = uniphier_reset_deassert,
240};
241
242static int uniphier_reset_probe(struct udevice *dev)
243{
244 struct uniphier_reset_priv *priv = dev_get_priv(dev);
245 fdt_addr_t addr;
246
Simon Glassba1dea42017-05-17 17:18:05 -0600247 addr = devfdt_get_addr(dev->parent);
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900248 if (addr == FDT_ADDR_T_NONE)
249 return -EINVAL;
250
251 priv->base = devm_ioremap(dev, addr, SZ_4K);
252 if (!priv->base)
253 return -ENOMEM;
254
255 priv->data = (void *)dev_get_driver_data(dev);
256
257 return 0;
258}
259
260static const struct udevice_id uniphier_reset_match[] = {
261 /* System reset */
262 {
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900263 .compatible = "socionext,uniphier-ld4-reset",
Masahiro Yamada0eb2cec2017-08-13 09:01:16 +0900264 .data = (ulong)uniphier_pro4_sys_reset_data,
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900265 },
266 {
267 .compatible = "socionext,uniphier-pro4-reset",
268 .data = (ulong)uniphier_pro4_sys_reset_data,
269 },
270 {
271 .compatible = "socionext,uniphier-sld8-reset",
Masahiro Yamada0eb2cec2017-08-13 09:01:16 +0900272 .data = (ulong)uniphier_pro4_sys_reset_data,
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900273 },
274 {
275 .compatible = "socionext,uniphier-pro5-reset",
Masahiro Yamada0eb2cec2017-08-13 09:01:16 +0900276 .data = (ulong)uniphier_pro4_sys_reset_data,
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900277 },
278 {
279 .compatible = "socionext,uniphier-pxs2-reset",
280 .data = (ulong)uniphier_pxs2_sys_reset_data,
281 },
282 {
283 .compatible = "socionext,uniphier-ld11-reset",
Masahiro Yamada0eb2cec2017-08-13 09:01:16 +0900284 .data = (ulong)uniphier_ld20_sys_reset_data,
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900285 },
286 {
287 .compatible = "socionext,uniphier-ld20-reset",
288 .data = (ulong)uniphier_ld20_sys_reset_data,
289 },
Masahiro Yamada8eb6a1c2017-08-29 12:20:51 +0900290 {
291 .compatible = "socionext,uniphier-pxs3-reset",
292 .data = (ulong)uniphier_pxs3_sys_reset_data,
293 },
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900294 /* Media I/O reset */
295 {
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900296 .compatible = "socionext,uniphier-ld4-mio-reset",
297 .data = (ulong)uniphier_mio_reset_data,
298 },
299 {
300 .compatible = "socionext,uniphier-pro4-mio-reset",
301 .data = (ulong)uniphier_mio_reset_data,
302 },
303 {
304 .compatible = "socionext,uniphier-sld8-mio-reset",
305 .data = (ulong)uniphier_mio_reset_data,
306 },
307 {
308 .compatible = "socionext,uniphier-pro5-mio-reset",
309 .data = (ulong)uniphier_mio_reset_data,
310 },
311 {
312 .compatible = "socionext,uniphier-pxs2-mio-reset",
313 .data = (ulong)uniphier_mio_reset_data,
314 },
315 {
316 .compatible = "socionext,uniphier-ld11-mio-reset",
317 .data = (ulong)uniphier_mio_reset_data,
318 },
319 {
Masahiro Yamada68199a22017-08-29 12:20:50 +0900320 .compatible = "socionext,uniphier-ld11-sd-reset",
321 .data = (ulong)uniphier_mio_reset_data,
322 },
323 {
324 .compatible = "socionext,uniphier-ld20-sd-reset",
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900325 .data = (ulong)uniphier_mio_reset_data,
326 },
Masahiro Yamada8eb6a1c2017-08-29 12:20:51 +0900327 {
328 .compatible = "socionext,uniphier-pxs3-sd-reset",
329 .data = (ulong)uniphier_mio_reset_data,
330 },
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900331 /* Peripheral reset */
332 {
333 .compatible = "socionext,uniphier-ld4-peri-reset",
334 .data = (ulong)uniphier_ld4_peri_reset_data,
335 },
336 {
337 .compatible = "socionext,uniphier-pro4-peri-reset",
338 .data = (ulong)uniphier_pro4_peri_reset_data,
339 },
340 {
341 .compatible = "socionext,uniphier-sld8-peri-reset",
342 .data = (ulong)uniphier_ld4_peri_reset_data,
343 },
344 {
345 .compatible = "socionext,uniphier-pro5-peri-reset",
346 .data = (ulong)uniphier_pro4_peri_reset_data,
347 },
348 {
349 .compatible = "socionext,uniphier-pxs2-peri-reset",
350 .data = (ulong)uniphier_pro4_peri_reset_data,
351 },
352 {
353 .compatible = "socionext,uniphier-ld11-peri-reset",
354 .data = (ulong)uniphier_pro4_peri_reset_data,
355 },
356 {
357 .compatible = "socionext,uniphier-ld20-peri-reset",
358 .data = (ulong)uniphier_pro4_peri_reset_data,
359 },
Masahiro Yamada8eb6a1c2017-08-29 12:20:51 +0900360 {
361 .compatible = "socionext,uniphier-pxs3-peri-reset",
362 .data = (ulong)uniphier_pro4_peri_reset_data,
363 },
Masahiro Yamada2aa4b5b2016-10-08 13:25:31 +0900364 { /* sentinel */ }
365};
366
367U_BOOT_DRIVER(uniphier_reset) = {
368 .name = "uniphier-reset",
369 .id = UCLASS_RESET,
370 .of_match = uniphier_reset_match,
371 .probe = uniphier_reset_probe,
372 .priv_auto_alloc_size = sizeof(struct uniphier_reset_priv),
373 .ops = &uniphier_reset_ops,
374};