1 // SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
2 /*
3  * (C) Copyright 2017 Rockchip Electronics Co., Ltd
4  */
5 #include <common.h>
6 #include <clk.h>
7 #include <dm.h>
8 #include <dt-structs.h>
9 #include <errno.h>
10 #include <ram.h>
11 #include <regmap.h>
12 #include <syscon.h>
13 #include <asm/io.h>
14 #include <asm/arch/clock.h>
15 #include <asm/arch/cru_rk322x.h>
16 #include <asm/arch/grf_rk322x.h>
17 #include <asm/arch/hardware.h>
18 #include <asm/arch/sdram_rk322x.h>
19 #include <asm/arch/timer.h>
20 #include <asm/arch/uart.h>
21 #include <asm/arch/sdram_common.h>
22 #include <asm/types.h>
23 #include <linux/err.h>
24 
25 DECLARE_GLOBAL_DATA_PTR;
26 struct chan_info {
27 	struct rk322x_ddr_pctl *pctl;
28 	struct rk322x_ddr_phy *phy;
29 	struct rk322x_service_sys *msch;
30 };
31 
32 struct dram_info {
33 	struct chan_info chan[1];
34 	struct ram_info info;
35 	struct clk ddr_clk;
36 	struct rk322x_cru *cru;
37 	struct rk322x_grf *grf;
38 };
39 
40 struct rk322x_sdram_params {
41 #if CONFIG_IS_ENABLED(OF_PLATDATA)
42 		struct dtd_rockchip_rk3228_dmc of_plat;
43 #endif
44 		struct rk322x_sdram_channel ch[1];
45 		struct rk322x_pctl_timing pctl_timing;
46 		struct rk322x_phy_timing phy_timing;
47 		struct rk322x_base_params base;
48 		int num_channels;
49 		struct regmap *map;
50 };
51 
52 #ifdef CONFIG_SPL_BUILD
53 /*
54  * [7:6]  bank(n:n bit bank)
55  * [5:4]  row(13+n)
56  * [3]    cs(0:1 cs, 1:2 cs)
57  * [2:1]  bank(n:n bit bank)
58  * [0]    col(10+n)
59  */
60 const char ddr_cfg_2_rbc[] = {
61 	((0 << 6) | (0 << 4) | (0 << 3) | (1 << 2) | 1),
62 	((0 << 6) | (1 << 4) | (0 << 3) | (1 << 2) | 1),
63 	((0 << 6) | (2 << 4) | (0 << 3) | (1 << 2) | 1),
64 	((0 << 6) | (3 << 4) | (0 << 3) | (1 << 2) | 1),
65 	((0 << 6) | (1 << 4) | (0 << 3) | (1 << 2) | 2),
66 	((0 << 6) | (2 << 4) | (0 << 3) | (1 << 2) | 2),
67 	((0 << 6) | (3 << 4) | (0 << 3) | (1 << 2) | 2),
68 	((0 << 6) | (0 << 4) | (0 << 3) | (1 << 2) | 0),
69 	((0 << 6) | (1 << 4) | (0 << 3) | (1 << 2) | 0),
70 	((0 << 6) | (2 << 4) | (0 << 3) | (1 << 2) | 0),
71 	((0 << 6) | (3 << 4) | (0 << 3) | (1 << 2) | 0),
72 	((0 << 6) | (2 << 4) | (0 << 3) | (0 << 2) | 1),
73 	((1 << 6) | (1 << 4) | (0 << 3) | (0 << 2) | 2),
74 	((1 << 6) | (1 << 4) | (0 << 3) | (0 << 2) | 1),
75 	((0 << 6) | (3 << 4) | (1 << 3) | (1 << 2) | 1),
76 	((0 << 6) | (3 << 4) | (1 << 3) | (1 << 2) | 0),
77 };
78 
79 static void copy_to_reg(u32 *dest, const u32 *src, u32 n)
80 {
81 	int i;
82 
83 	for (i = 0; i < n / sizeof(u32); i++) {
84 		writel(*src, dest);
85 		src++;
86 		dest++;
87 	}
88 }
89 
90 void phy_pctrl_reset(struct rk322x_cru *cru,
91 		     struct rk322x_ddr_phy *ddr_phy)
92 {
93 	rk_clrsetreg(&cru->cru_softrst_con[5], 1 << DDRCTRL_PSRST_SHIFT |
94 			1 << DDRCTRL_SRST_SHIFT | 1 << DDRPHY_PSRST_SHIFT |
95 			1 << DDRPHY_SRST_SHIFT,
96 			1 << DDRCTRL_PSRST_SHIFT | 1 << DDRCTRL_SRST_SHIFT |
97 			1 << DDRPHY_PSRST_SHIFT | 1 << DDRPHY_SRST_SHIFT);
98 
99 	rockchip_udelay(10);
100 
101 	rk_clrreg(&cru->cru_softrst_con[5], 1 << DDRPHY_PSRST_SHIFT |
102 						  1 << DDRPHY_SRST_SHIFT);
103 	rockchip_udelay(10);
104 
105 	rk_clrreg(&cru->cru_softrst_con[5], 1 << DDRCTRL_PSRST_SHIFT |
106 						  1 << DDRCTRL_SRST_SHIFT);
107 	rockchip_udelay(10);
108 
109 	clrbits_le32(&ddr_phy->ddrphy_reg[0],
110 		     SOFT_RESET_MASK << SOFT_RESET_SHIFT);
111 	rockchip_udelay(10);
112 	setbits_le32(&ddr_phy->ddrphy_reg[0],
113 		     SOFT_DERESET_ANALOG);
114 	rockchip_udelay(5);
115 	setbits_le32(&ddr_phy->ddrphy_reg[0],
116 		     SOFT_DERESET_DIGITAL);
117 
118 	rockchip_udelay(1);
119 }
120 
121 void phy_dll_bypass_set(struct rk322x_ddr_phy *ddr_phy, u32 freq)
122 {
123 	u32 tmp;
124 
125 	setbits_le32(&ddr_phy->ddrphy_reg[0x13], 0x10);
126 	setbits_le32(&ddr_phy->ddrphy_reg[0x26], 0x10);
127 	setbits_le32(&ddr_phy->ddrphy_reg[0x36], 0x10);
128 	setbits_le32(&ddr_phy->ddrphy_reg[0x46], 0x10);
129 	setbits_le32(&ddr_phy->ddrphy_reg[0x56], 0x10);
130 
131 	clrbits_le32(&ddr_phy->ddrphy_reg[0x14], 0x8);
132 	clrbits_le32(&ddr_phy->ddrphy_reg[0x27], 0x8);
133 	clrbits_le32(&ddr_phy->ddrphy_reg[0x37], 0x8);
134 	clrbits_le32(&ddr_phy->ddrphy_reg[0x47], 0x8);
135 	clrbits_le32(&ddr_phy->ddrphy_reg[0x57], 0x8);
136 
137 	if (freq <= 400)
138 		setbits_le32(&ddr_phy->ddrphy_reg[0xa4], 0x1f);
139 	else
140 		clrbits_le32(&ddr_phy->ddrphy_reg[0xa4], 0x1f);
141 
142 	if (freq <= 680)
143 		tmp = 3;
144 	else
145 		tmp = 2;
146 
147 	writel(tmp, &ddr_phy->ddrphy_reg[0x28]);
148 	writel(tmp, &ddr_phy->ddrphy_reg[0x38]);
149 	writel(tmp, &ddr_phy->ddrphy_reg[0x48]);
150 	writel(tmp, &ddr_phy->ddrphy_reg[0x58]);
151 }
152 
153 static void send_command(struct rk322x_ddr_pctl *pctl,
154 			 u32 rank, u32 cmd, u32 arg)
155 {
156 	writel((START_CMD | (rank << 20) | arg | cmd), &pctl->mcmd);
157 	rockchip_udelay(1);
158 	while (readl(&pctl->mcmd) & START_CMD)
159 		;
160 }
161 
162 static void memory_init(struct chan_info *chan,
163 			struct rk322x_sdram_params *sdram_params)
164 {
165 	struct rk322x_ddr_pctl *pctl = chan->pctl;
166 	u32 dramtype = sdram_params->base.dramtype;
167 
168 	if (dramtype == DDR3) {
169 		send_command(pctl, 3, DESELECT_CMD, 0);
170 		rockchip_udelay(1);
171 		send_command(pctl, 3, PREA_CMD, 0);
172 		send_command(pctl, 3, MRS_CMD,
173 			     (0x02 & BANK_ADDR_MASK) << BANK_ADDR_SHIFT |
174 			     (sdram_params->phy_timing.mr[2] & CMD_ADDR_MASK) <<
175 			     CMD_ADDR_SHIFT);
176 
177 		send_command(pctl, 3, MRS_CMD,
178 			     (0x03 & BANK_ADDR_MASK) << BANK_ADDR_SHIFT |
179 			     (sdram_params->phy_timing.mr[3] & CMD_ADDR_MASK) <<
180 			     CMD_ADDR_SHIFT);
181 
182 		send_command(pctl, 3, MRS_CMD,
183 			     (0x01 & BANK_ADDR_MASK) << BANK_ADDR_SHIFT |
184 			     (sdram_params->phy_timing.mr[1] & CMD_ADDR_MASK) <<
185 			     CMD_ADDR_SHIFT);
186 
187 		send_command(pctl, 3, MRS_CMD,
188 			     (0x00 & BANK_ADDR_MASK) << BANK_ADDR_SHIFT |
189 			     ((sdram_params->phy_timing.mr[0] |
190 			       DDR3_DLL_RESET) &
191 			     CMD_ADDR_MASK) << CMD_ADDR_SHIFT);
192 
193 		send_command(pctl, 3, ZQCL_CMD, 0);
194 	} else {
195 		send_command(pctl, 3, MRS_CMD,
196 			     (0x63 & LPDDR23_MA_MASK) << LPDDR23_MA_SHIFT |
197 			     (0 & LPDDR23_OP_MASK) <<
198 			     LPDDR23_OP_SHIFT);
199 		rockchip_udelay(10);
200 		send_command(pctl, 3, MRS_CMD,
201 			     (0x10 & LPDDR23_MA_MASK) << LPDDR23_MA_SHIFT |
202 			     (0xff & LPDDR23_OP_MASK) <<
203 			     LPDDR23_OP_SHIFT);
204 		rockchip_udelay(1);
205 		send_command(pctl, 3, MRS_CMD,
206 			     (0x10 & LPDDR23_MA_MASK) << LPDDR23_MA_SHIFT |
207 			     (0xff & LPDDR23_OP_MASK) <<
208 			     LPDDR23_OP_SHIFT);
209 		rockchip_udelay(1);
210 		send_command(pctl, 3, MRS_CMD,
211 			     (1 & LPDDR23_MA_MASK) << LPDDR23_MA_SHIFT |
212 			     (sdram_params->phy_timing.mr[1] &
213 			      LPDDR23_OP_MASK) << LPDDR23_OP_SHIFT);
214 		send_command(pctl, 3, MRS_CMD,
215 			     (2 & LPDDR23_MA_MASK) << LPDDR23_MA_SHIFT |
216 			     (sdram_params->phy_timing.mr[2] &
217 			      LPDDR23_OP_MASK) << LPDDR23_OP_SHIFT);
218 		send_command(pctl, 3, MRS_CMD,
219 			     (3 & LPDDR23_MA_MASK) << LPDDR23_MA_SHIFT |
220 			     (sdram_params->phy_timing.mr[3] &
221 			      LPDDR23_OP_MASK) << LPDDR23_OP_SHIFT);
222 		if (dramtype == LPDDR3)
223 			send_command(pctl, 3, MRS_CMD, (11 & LPDDR23_MA_MASK) <<
224 				     LPDDR23_MA_SHIFT |
225 				     (sdram_params->phy_timing.mr11 &
226 				      LPDDR23_OP_MASK) << LPDDR23_OP_SHIFT);
227 	}
228 }
229 
230 static u32 data_training(struct chan_info *chan)
231 {
232 	struct rk322x_ddr_phy *ddr_phy = chan->phy;
233 	struct rk322x_ddr_pctl *pctl = chan->pctl;
234 	u32 value;
235 	u32 bw = (readl(&ddr_phy->ddrphy_reg[0]) >> 4) & 0xf;
236 	u32 ret;
237 
238 	/* disable auto refresh */
239 	value = readl(&pctl->trefi) | (1 << 31);
240 	writel(1 << 31, &pctl->trefi);
241 
242 	clrsetbits_le32(&ddr_phy->ddrphy_reg[2], 0x30,
243 			DQS_SQU_CAL_SEL_CS0);
244 	setbits_le32(&ddr_phy->ddrphy_reg[2], DQS_SQU_CAL_START);
245 
246 	rockchip_udelay(30);
247 	ret = readl(&ddr_phy->ddrphy_reg[0xff]);
248 
249 	clrbits_le32(&ddr_phy->ddrphy_reg[2],
250 		     DQS_SQU_CAL_START);
251 
252 	/*
253 	 * since data training will take about 20us, so send some auto
254 	 * refresh(about 7.8us) to complement the lost time
255 	 */
256 	send_command(pctl, 3, PREA_CMD, 0);
257 	send_command(pctl, 3, REF_CMD, 0);
258 
259 	writel(value, &pctl->trefi);
260 
261 	if (ret & 0x10) {
262 		ret = -1;
263 	} else {
264 		ret = (ret & 0xf) ^ bw;
265 		ret = (ret == 0) ? 0 : -1;
266 	}
267 	return ret;
268 }
269 
270 static void move_to_config_state(struct rk322x_ddr_pctl *pctl)
271 {
272 	unsigned int state;
273 
274 	while (1) {
275 		state = readl(&pctl->stat) & PCTL_STAT_MASK;
276 		switch (state) {
277 		case LOW_POWER:
278 			writel(WAKEUP_STATE, &pctl->sctl);
279 			while ((readl(&pctl->stat) & PCTL_STAT_MASK)
280 				!= ACCESS)
281 				;
282 			/*
283 			 * If at low power state, need wakeup first, and then
284 			 * enter the config, so fallthrough
285 			 */
286 		case ACCESS:
287 			/* fallthrough */
288 		case INIT_MEM:
289 			writel(CFG_STATE, &pctl->sctl);
290 			while ((readl(&pctl->stat) & PCTL_STAT_MASK) != CONFIG)
291 				;
292 			break;
293 		case CONFIG:
294 			return;
295 		default:
296 			break;
297 		}
298 	}
299 }
300 
301 static void move_to_access_state(struct rk322x_ddr_pctl *pctl)
302 {
303 	unsigned int state;
304 
305 	while (1) {
306 		state = readl(&pctl->stat) & PCTL_STAT_MASK;
307 		switch (state) {
308 		case LOW_POWER:
309 			writel(WAKEUP_STATE, &pctl->sctl);
310 			while ((readl(&pctl->stat) & PCTL_STAT_MASK) != ACCESS)
311 				;
312 			break;
313 		case INIT_MEM:
314 			writel(CFG_STATE, &pctl->sctl);
315 			while ((readl(&pctl->stat) & PCTL_STAT_MASK) != CONFIG)
316 				;
317 			/* fallthrough */
318 		case CONFIG:
319 			writel(GO_STATE, &pctl->sctl);
320 			while ((readl(&pctl->stat) & PCTL_STAT_MASK) != ACCESS)
321 				;
322 			break;
323 		case ACCESS:
324 			return;
325 		default:
326 			break;
327 		}
328 	}
329 }
330 
331 static void move_to_lowpower_state(struct rk322x_ddr_pctl *pctl)
332 {
333 	unsigned int state;
334 
335 	while (1) {
336 		state = readl(&pctl->stat) & PCTL_STAT_MASK;
337 		switch (state) {
338 		case INIT_MEM:
339 			writel(CFG_STATE, &pctl->sctl);
340 			while ((readl(&pctl->stat) & PCTL_STAT_MASK) != CONFIG)
341 				;
342 			/* fallthrough */
343 		case CONFIG:
344 			writel(GO_STATE, &pctl->sctl);
345 			while ((readl(&pctl->stat) & PCTL_STAT_MASK) != ACCESS)
346 				;
347 			break;
348 		case ACCESS:
349 			writel(SLEEP_STATE, &pctl->sctl);
350 			while ((readl(&pctl->stat) & PCTL_STAT_MASK) !=
351 			       LOW_POWER)
352 				;
353 			break;
354 		case LOW_POWER:
355 			return;
356 		default:
357 			break;
358 		}
359 	}
360 }
361 
362 /* pctl should in low power mode when call this function */
363 static void phy_softreset(struct dram_info *dram)
364 {
365 	struct rk322x_ddr_phy *ddr_phy = dram->chan[0].phy;
366 	struct rk322x_grf *grf = dram->grf;
367 
368 	writel(GRF_DDRPHY_BUFFEREN_CORE_EN, &grf->soc_con[0]);
369 	clrbits_le32(&ddr_phy->ddrphy_reg[0], 0x3 << 2);
370 	rockchip_udelay(1);
371 	setbits_le32(&ddr_phy->ddrphy_reg[0], 1 << 2);
372 	rockchip_udelay(5);
373 	setbits_le32(&ddr_phy->ddrphy_reg[0], 1 << 3);
374 	writel(GRF_DDRPHY_BUFFEREN_CORE_DIS, &grf->soc_con[0]);
375 }
376 
377 /* bw: 2: 32bit, 1:16bit */
378 static void set_bw(struct dram_info *dram, u32 bw)
379 {
380 	struct rk322x_ddr_pctl *pctl = dram->chan[0].pctl;
381 	struct rk322x_ddr_phy *ddr_phy = dram->chan[0].phy;
382 	struct rk322x_grf *grf = dram->grf;
383 
384 	if (bw == 1) {
385 		setbits_le32(&pctl->ppcfg, 1);
386 		clrbits_le32(&ddr_phy->ddrphy_reg[0], 0xc << 4);
387 		writel(GRF_MSCH_NOC_16BIT_EN, &grf->soc_con[0]);
388 		clrbits_le32(&ddr_phy->ddrphy_reg[0x46], 0x8);
389 		clrbits_le32(&ddr_phy->ddrphy_reg[0x56], 0x8);
390 	} else {
391 		clrbits_le32(&pctl->ppcfg, 1);
392 		setbits_le32(&ddr_phy->ddrphy_reg[0], 0xf << 4);
393 		writel(GRF_DDR_32BIT_EN | GRF_MSCH_NOC_32BIT_EN,
394 		       &grf->soc_con[0]);
395 		setbits_le32(&ddr_phy->ddrphy_reg[0x46], 0x8);
396 		setbits_le32(&ddr_phy->ddrphy_reg[0x56], 0x8);
397 	}
398 }
399 
400 static void pctl_cfg(struct rk322x_ddr_pctl *pctl,
401 		     struct rk322x_sdram_params *sdram_params,
402 		     struct rk322x_grf *grf)
403 {
404 	u32 burst_len;
405 	u32 bw;
406 	u32 dramtype = sdram_params->base.dramtype;
407 
408 	if (sdram_params->ch[0].bw == 2)
409 		bw = GRF_DDR_32BIT_EN | GRF_MSCH_NOC_32BIT_EN;
410 	else
411 		bw = GRF_MSCH_NOC_16BIT_EN;
412 
413 	writel(DFI_INIT_START | DFI_DATA_BYTE_DISABLE_EN, &pctl->dfistcfg0);
414 	writel(DFI_DRAM_CLK_SR_EN | DFI_DRAM_CLK_DPD_EN, &pctl->dfistcfg1);
415 	writel(DFI_PARITY_INTR_EN | DFI_PARITY_EN, &pctl->dfistcfg2);
416 	writel(0x51010, &pctl->dfilpcfg0);
417 
418 	writel(1, &pctl->dfitphyupdtype0);
419 	writel(0x0d, &pctl->dfitphyrdlat);
420 	writel(0, &pctl->dfitphywrdata);
421 
422 	writel(0, &pctl->dfiupdcfg);
423 	copy_to_reg(&pctl->togcnt1u, &sdram_params->pctl_timing.togcnt1u,
424 		    sizeof(struct rk322x_pctl_timing));
425 	if (dramtype == DDR3) {
426 		writel((1 << 3) | (1 << 11),
427 		       &pctl->dfiodtcfg);
428 		writel(7 << 16, &pctl->dfiodtcfg1);
429 		writel((readl(&pctl->tcl) - 1) / 2 - 1, &pctl->dfitrddataen);
430 		writel((readl(&pctl->tcwl) - 1) / 2 - 1, &pctl->dfitphywrlat);
431 		writel(500, &pctl->trsth);
432 		writel(0 << MDDR_LPDDR2_CLK_STOP_IDLE_SHIFT | DDR3_EN |
433 		       DDR2_DDR3_BL_8 | (6 - 4) << TFAW_SHIFT | PD_EXIT_SLOW |
434 		       1 << PD_TYPE_SHIFT | 0 << PD_IDLE_SHIFT,
435 		       &pctl->mcfg);
436 		writel(bw | GRF_DDR3_EN, &grf->soc_con[0]);
437 	} else {
438 		if (sdram_params->phy_timing.bl & PHT_BL_8)
439 			burst_len = MDDR_LPDDR2_BL_8;
440 		else
441 			burst_len = MDDR_LPDDR2_BL_4;
442 
443 		writel(readl(&pctl->tcl) / 2 - 1, &pctl->dfitrddataen);
444 		writel(readl(&pctl->tcwl) / 2 - 1, &pctl->dfitphywrlat);
445 		writel(0, &pctl->trsth);
446 		if (dramtype == LPDDR2) {
447 			writel(0 << MDDR_LPDDR2_CLK_STOP_IDLE_SHIFT |
448 			       LPDDR2_S4 | LPDDR2_EN | burst_len |
449 			       (6 - 4) << TFAW_SHIFT | PD_EXIT_FAST |
450 			       1 << PD_TYPE_SHIFT | 0 << PD_IDLE_SHIFT,
451 			       &pctl->mcfg);
452 			writel(0, &pctl->dfiodtcfg);
453 			writel(0, &pctl->dfiodtcfg1);
454 		} else {
455 			writel(0 << MDDR_LPDDR2_CLK_STOP_IDLE_SHIFT |
456 			       LPDDR2_S4 | LPDDR3_EN | burst_len |
457 			       (6 - 4) << TFAW_SHIFT | PD_EXIT_FAST |
458 			       1 << PD_TYPE_SHIFT | 0 << PD_IDLE_SHIFT,
459 			       &pctl->mcfg);
460 			writel((1 << 3) | (1 << 2), &pctl->dfiodtcfg);
461 			writel((7 << 16) | 4, &pctl->dfiodtcfg1);
462 		}
463 		writel(bw | GRF_LPDDR2_3_EN, &grf->soc_con[0]);
464 	}
465 	setbits_le32(&pctl->scfg, 1);
466 }
467 
468 static void phy_cfg(struct chan_info *chan,
469 		    struct rk322x_sdram_params *sdram_params)
470 {
471 	struct rk322x_ddr_phy *ddr_phy = chan->phy;
472 	struct rk322x_service_sys *axi_bus = chan->msch;
473 	struct rk322x_msch_timings *noc_timing = &sdram_params->base.noc_timing;
474 	struct rk322x_phy_timing *phy_timing = &sdram_params->phy_timing;
475 	struct rk322x_pctl_timing *pctl_timing = &sdram_params->pctl_timing;
476 	u32 cmd_drv, clk_drv, dqs_drv, dqs_odt;
477 
478 	writel(noc_timing->ddrtiming, &axi_bus->ddrtiming);
479 	writel(noc_timing->ddrmode, &axi_bus->ddrmode);
480 	writel(noc_timing->readlatency, &axi_bus->readlatency);
481 	writel(noc_timing->activate, &axi_bus->activate);
482 	writel(noc_timing->devtodev, &axi_bus->devtodev);
483 
484 	switch (sdram_params->base.dramtype) {
485 	case DDR3:
486 		writel(PHY_DDR3 | phy_timing->bl, &ddr_phy->ddrphy_reg[1]);
487 		break;
488 	case LPDDR2:
489 		writel(PHY_LPDDR2 | phy_timing->bl, &ddr_phy->ddrphy_reg[1]);
490 		break;
491 	default:
492 		writel(PHY_LPDDR2 | phy_timing->bl, &ddr_phy->ddrphy_reg[1]);
493 		break;
494 	}
495 
496 	writel(phy_timing->cl_al, &ddr_phy->ddrphy_reg[0xb]);
497 	writel(pctl_timing->tcwl, &ddr_phy->ddrphy_reg[0xc]);
498 
499 	cmd_drv = PHY_RON_RTT_34OHM;
500 	clk_drv = PHY_RON_RTT_45OHM;
501 	dqs_drv = PHY_RON_RTT_34OHM;
502 	if (sdram_params->base.dramtype == LPDDR2)
503 		dqs_odt = PHY_RON_RTT_DISABLE;
504 	else
505 		dqs_odt = PHY_RON_RTT_225OHM;
506 
507 	writel(cmd_drv, &ddr_phy->ddrphy_reg[0x11]);
508 	clrsetbits_le32(&ddr_phy->ddrphy_reg[0x12], (0x1f << 3), cmd_drv << 3);
509 	writel(clk_drv, &ddr_phy->ddrphy_reg[0x16]);
510 	writel(clk_drv, &ddr_phy->ddrphy_reg[0x18]);
511 
512 	writel(dqs_drv, &ddr_phy->ddrphy_reg[0x20]);
513 	writel(dqs_drv, &ddr_phy->ddrphy_reg[0x2f]);
514 	writel(dqs_drv, &ddr_phy->ddrphy_reg[0x30]);
515 	writel(dqs_drv, &ddr_phy->ddrphy_reg[0x3f]);
516 	writel(dqs_drv, &ddr_phy->ddrphy_reg[0x40]);
517 	writel(dqs_drv, &ddr_phy->ddrphy_reg[0x4f]);
518 	writel(dqs_drv, &ddr_phy->ddrphy_reg[0x50]);
519 	writel(dqs_drv, &ddr_phy->ddrphy_reg[0x5f]);
520 
521 	writel(dqs_odt, &ddr_phy->ddrphy_reg[0x21]);
522 	writel(dqs_odt, &ddr_phy->ddrphy_reg[0x2e]);
523 	writel(dqs_odt, &ddr_phy->ddrphy_reg[0x31]);
524 	writel(dqs_odt, &ddr_phy->ddrphy_reg[0x3e]);
525 	writel(dqs_odt, &ddr_phy->ddrphy_reg[0x41]);
526 	writel(dqs_odt, &ddr_phy->ddrphy_reg[0x4e]);
527 	writel(dqs_odt, &ddr_phy->ddrphy_reg[0x51]);
528 	writel(dqs_odt, &ddr_phy->ddrphy_reg[0x5e]);
529 }
530 
531 void dram_cfg_rbc(struct chan_info *chan,
532 		  struct rk322x_sdram_params *sdram_params)
533 {
534 	char noc_config;
535 	int i = 0;
536 	struct rk322x_sdram_channel *config = &sdram_params->ch[0];
537 	struct rk322x_service_sys *axi_bus = chan->msch;
538 
539 	move_to_config_state(chan->pctl);
540 
541 	if ((config->rank == 2) && (config->cs1_row == config->cs0_row)) {
542 		if ((config->col + config->bw) == 12) {
543 			i = 14;
544 			goto finish;
545 		} else if ((config->col + config->bw) == 11) {
546 			i = 15;
547 			goto finish;
548 		}
549 	}
550 	noc_config = ((config->cs0_row - 13) << 4) | ((config->bk - 2) << 2) |
551 				(config->col + config->bw - 11);
552 	for (i = 0; i < 11; i++) {
553 		if (noc_config == ddr_cfg_2_rbc[i])
554 			break;
555 	}
556 
557 	if (i < 11)
558 		goto finish;
559 
560 	noc_config = ((config->bk - 2) << 6) | ((config->cs0_row - 13) << 4) |
561 				(config->col + config->bw - 11);
562 
563 	for (i = 11; i < 14; i++) {
564 		if (noc_config == ddr_cfg_2_rbc[i])
565 			break;
566 	}
567 	if (i < 14)
568 		goto finish;
569 	else
570 		i = 0;
571 
572 finish:
573 	writel(i, &axi_bus->ddrconf);
574 	move_to_access_state(chan->pctl);
575 }
576 
577 static void dram_all_config(const struct dram_info *dram,
578 			    struct rk322x_sdram_params *sdram_params)
579 {
580 	struct rk322x_sdram_channel *info = &sdram_params->ch[0];
581 	u32 sys_reg = 0;
582 
583 	sys_reg |= sdram_params->base.dramtype << SYS_REG_DDRTYPE_SHIFT;
584 	sys_reg |= (1 - 1) << SYS_REG_NUM_CH_SHIFT;
585 	sys_reg |= info->row_3_4 << SYS_REG_ROW_3_4_SHIFT(0);
586 	sys_reg |= 1 << SYS_REG_CHINFO_SHIFT(0);
587 	sys_reg |= (info->rank - 1) << SYS_REG_RANK_SHIFT(0);
588 	sys_reg |= (info->col - 9) << SYS_REG_COL_SHIFT(0);
589 	sys_reg |= info->bk == 3 ? 0 : 1 << SYS_REG_BK_SHIFT(0);
590 	sys_reg |= (info->cs0_row - 13) << SYS_REG_CS0_ROW_SHIFT(0);
591 	sys_reg |= (info->cs1_row - 13) << SYS_REG_CS1_ROW_SHIFT(0);
592 	sys_reg |= (2 >> info->bw) << SYS_REG_BW_SHIFT(0);
593 	sys_reg |= (2 >> info->dbw) << SYS_REG_DBW_SHIFT(0);
594 
595 	writel(sys_reg, &dram->grf->os_reg[2]);
596 }
597 
598 #define TEST_PATTEN	0x5aa5f00f
599 
600 static int dram_cap_detect(struct dram_info *dram,
601 			   struct rk322x_sdram_params *sdram_params)
602 {
603 	u32 bw, row, col, addr;
604 	u32 ret = 0;
605 	struct rk322x_service_sys *axi_bus = dram->chan[0].msch;
606 
607 	if (sdram_params->base.dramtype == DDR3)
608 		sdram_params->ch[0].dbw = 1;
609 	else
610 		sdram_params->ch[0].dbw = 2;
611 
612 	move_to_config_state(dram->chan[0].pctl);
613 	/* bw detect */
614 	set_bw(dram, 2);
615 	if (data_training(&dram->chan[0]) == 0) {
616 		bw = 2;
617 	} else {
618 		bw = 1;
619 		set_bw(dram, 1);
620 		move_to_lowpower_state(dram->chan[0].pctl);
621 		phy_softreset(dram);
622 		move_to_config_state(dram->chan[0].pctl);
623 		if (data_training(&dram->chan[0])) {
624 			printf("BW detect error\n");
625 			ret = -EINVAL;
626 		}
627 	}
628 	sdram_params->ch[0].bw = bw;
629 	sdram_params->ch[0].bk = 3;
630 
631 	if (bw == 2)
632 		writel(6, &axi_bus->ddrconf);
633 	else
634 		writel(3, &axi_bus->ddrconf);
635 	move_to_access_state(dram->chan[0].pctl);
636 	for (col = 11; col >= 9; col--) {
637 		writel(0, CONFIG_SYS_SDRAM_BASE);
638 		addr = CONFIG_SYS_SDRAM_BASE +
639 			(1 << (col + bw - 1));
640 		writel(TEST_PATTEN, addr);
641 		if ((readl(addr) == TEST_PATTEN) &&
642 		    (readl(CONFIG_SYS_SDRAM_BASE) == 0))
643 			break;
644 	}
645 	if (col == 8) {
646 		printf("Col detect error\n");
647 		ret = -EINVAL;
648 		goto out;
649 	} else {
650 		sdram_params->ch[0].col = col;
651 	}
652 
653 	writel(10, &axi_bus->ddrconf);
654 
655 	/* Detect row*/
656 	for (row = 16; row >= 12; row--) {
657 		writel(0, CONFIG_SYS_SDRAM_BASE);
658 		addr = CONFIG_SYS_SDRAM_BASE + (1u << (row + 11 + 3 - 1));
659 		writel(TEST_PATTEN, addr);
660 		if ((readl(addr) == TEST_PATTEN) &&
661 		    (readl(CONFIG_SYS_SDRAM_BASE) == 0))
662 			break;
663 	}
664 	if (row == 11) {
665 		printf("Row detect error\n");
666 		ret = -EINVAL;
667 	} else {
668 		sdram_params->ch[0].cs1_row = row;
669 		sdram_params->ch[0].row_3_4 = 0;
670 		sdram_params->ch[0].cs0_row = row;
671 	}
672 	/* cs detect */
673 	writel(0, CONFIG_SYS_SDRAM_BASE);
674 	writel(TEST_PATTEN, CONFIG_SYS_SDRAM_BASE + (1u << 30));
675 	writel(~TEST_PATTEN, CONFIG_SYS_SDRAM_BASE + (1u << 30) + 4);
676 	if ((readl(CONFIG_SYS_SDRAM_BASE + (1u << 30)) == TEST_PATTEN) &&
677 	    (readl(CONFIG_SYS_SDRAM_BASE) == 0))
678 		sdram_params->ch[0].rank = 2;
679 	else
680 		sdram_params->ch[0].rank = 1;
681 out:
682 	return ret;
683 }
684 
685 static int sdram_init(struct dram_info *dram,
686 		      struct rk322x_sdram_params *sdram_params)
687 {
688 	int ret;
689 
690 	ret = clk_set_rate(&dram->ddr_clk,
691 			   sdram_params->base.ddr_freq * MHz * 2);
692 	if (ret < 0) {
693 		printf("Could not set DDR clock\n");
694 		return ret;
695 	}
696 
697 	phy_pctrl_reset(dram->cru, dram->chan[0].phy);
698 	phy_dll_bypass_set(dram->chan[0].phy, sdram_params->base.ddr_freq);
699 	pctl_cfg(dram->chan[0].pctl, sdram_params, dram->grf);
700 	phy_cfg(&dram->chan[0], sdram_params);
701 	writel(POWER_UP_START, &dram->chan[0].pctl->powctl);
702 	while (!(readl(&dram->chan[0].pctl->powstat) & POWER_UP_DONE))
703 		;
704 	memory_init(&dram->chan[0], sdram_params);
705 	move_to_access_state(dram->chan[0].pctl);
706 	ret = dram_cap_detect(dram, sdram_params);
707 	if (ret)
708 		goto out;
709 	dram_cfg_rbc(&dram->chan[0], sdram_params);
710 	dram_all_config(dram, sdram_params);
711 out:
712 	return ret;
713 }
714 
715 static int rk322x_dmc_ofdata_to_platdata(struct udevice *dev)
716 {
717 #if !CONFIG_IS_ENABLED(OF_PLATDATA)
718 	struct rk322x_sdram_params *params = dev_get_platdata(dev);
719 	const void *blob = gd->fdt_blob;
720 	int node = dev_of_offset(dev);
721 	int ret;
722 
723 	params->num_channels = 1;
724 
725 	ret = fdtdec_get_int_array(blob, node, "rockchip,pctl-timing",
726 				   (u32 *)&params->pctl_timing,
727 				   sizeof(params->pctl_timing) / sizeof(u32));
728 	if (ret) {
729 		printf("%s: Cannot read rockchip,pctl-timing\n", __func__);
730 		return -EINVAL;
731 	}
732 	ret = fdtdec_get_int_array(blob, node, "rockchip,phy-timing",
733 				   (u32 *)&params->phy_timing,
734 				   sizeof(params->phy_timing) / sizeof(u32));
735 	if (ret) {
736 		printf("%s: Cannot read rockchip,phy-timing\n", __func__);
737 		return -EINVAL;
738 	}
739 	ret = fdtdec_get_int_array(blob, node, "rockchip,sdram-params",
740 				   (u32 *)&params->base,
741 				   sizeof(params->base) / sizeof(u32));
742 	if (ret) {
743 		printf("%s: Cannot read rockchip,sdram-params\n", __func__);
744 		return -EINVAL;
745 	}
746 	ret = regmap_init_mem(dev_ofnode(dev), &params->map);
747 	if (ret)
748 		return ret;
749 #endif
750 
751 	return 0;
752 }
753 #endif /* CONFIG_SPL_BUILD */
754 
755 #if CONFIG_IS_ENABLED(OF_PLATDATA)
756 static int conv_of_platdata(struct udevice *dev)
757 {
758 	struct rk322x_sdram_params *plat = dev_get_platdata(dev);
759 	struct dtd_rockchip_rk322x_dmc *of_plat = &plat->of_plat;
760 	int ret;
761 
762 	memcpy(&plat->pctl_timing, of_plat->rockchip_pctl_timing,
763 	       sizeof(plat->pctl_timing));
764 	memcpy(&plat->phy_timing, of_plat->rockchip_phy_timing,
765 	       sizeof(plat->phy_timing));
766 	memcpy(&plat->base, of_plat->rockchip_sdram_params, sizeof(plat->base));
767 
768 	plat->num_channels = 1;
769 	ret = regmap_init_mem_platdata(dev, of_plat->reg,
770 				       ARRAY_SIZE(of_plat->reg) / 2,
771 				       &plat->map);
772 	if (ret)
773 		return ret;
774 
775 	return 0;
776 }
777 #endif
778 
779 static int rk322x_dmc_probe(struct udevice *dev)
780 {
781 #ifdef CONFIG_SPL_BUILD
782 	struct rk322x_sdram_params *plat = dev_get_platdata(dev);
783 	int ret;
784 	struct udevice *dev_clk;
785 #endif
786 	struct dram_info *priv = dev_get_priv(dev);
787 
788 	priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
789 #ifdef CONFIG_SPL_BUILD
790 #if CONFIG_IS_ENABLED(OF_PLATDATA)
791 	ret = conv_of_platdata(dev);
792 	if (ret)
793 		return ret;
794 #endif
795 
796 	priv->chan[0].msch = syscon_get_first_range(ROCKCHIP_SYSCON_MSCH);
797 	priv->chan[0].pctl = regmap_get_range(plat->map, 0);
798 	priv->chan[0].phy = regmap_get_range(plat->map, 1);
799 	ret = rockchip_get_clk(&dev_clk);
800 	if (ret)
801 		return ret;
802 	priv->ddr_clk.id = CLK_DDR;
803 	ret = clk_request(dev_clk, &priv->ddr_clk);
804 	if (ret)
805 		return ret;
806 
807 	priv->cru = rockchip_get_cru();
808 	if (IS_ERR(priv->cru))
809 		return PTR_ERR(priv->cru);
810 	ret = sdram_init(priv, plat);
811 	if (ret)
812 		return ret;
813 #else
814 	priv->info.base = CONFIG_SYS_SDRAM_BASE;
815 	priv->info.size = rockchip_sdram_size(
816 			(phys_addr_t)&priv->grf->os_reg[2]);
817 #endif
818 
819 	return 0;
820 }
821 
822 static int rk322x_dmc_get_info(struct udevice *dev, struct ram_info *info)
823 {
824 	struct dram_info *priv = dev_get_priv(dev);
825 
826 	*info = priv->info;
827 
828 	return 0;
829 }
830 
831 static struct ram_ops rk322x_dmc_ops = {
832 	.get_info = rk322x_dmc_get_info,
833 };
834 
835 static const struct udevice_id rk322x_dmc_ids[] = {
836 	{ .compatible = "rockchip,rk3228-dmc" },
837 	{ }
838 };
839 
840 U_BOOT_DRIVER(dmc_rk322x) = {
841 	.name = "rockchip_rk322x_dmc",
842 	.id = UCLASS_RAM,
843 	.of_match = rk322x_dmc_ids,
844 	.ops = &rk322x_dmc_ops,
845 #ifdef CONFIG_SPL_BUILD
846 	.ofdata_to_platdata = rk322x_dmc_ofdata_to_platdata,
847 #endif
848 	.probe = rk322x_dmc_probe,
849 	.priv_auto_alloc_size = sizeof(struct dram_info),
850 #ifdef CONFIG_SPL_BUILD
851 	.platdata_auto_alloc_size = sizeof(struct rk322x_sdram_params),
852 #endif
853 };
854 
855