2 * Copyright (C) 2014 Gateworks Corporation
3 * Author: Tim Harvey <tharvey@gateworks.com>
5 * SPDX-License-Identifier: GPL-2.0+
11 #include <asm/arch/crm_regs.h>
12 #include <asm/arch/iomux.h>
13 #include <asm/arch/mx6-ddr.h>
14 #include <asm/arch/mx6-pins.h>
15 #include <asm/arch/sys_proto.h>
16 #include <asm/imx-common/boot_mode.h>
17 #include <asm/imx-common/iomux-v3.h>
18 #include <asm/imx-common/mxc_i2c.h>
21 #include "ventana_eeprom.h"
23 DECLARE_GLOBAL_DATA_PTR;
25 #define RTT_NOM_120OHM /* use 120ohm Rtt_nom vs 60ohm (lower power) */
27 #define GSC_EEPROM_ADDR 0x51
28 #define GSC_EEPROM_DDR_SIZE 0x2B /* enum (512,1024,2048) MB */
29 #define GSC_EEPROM_DDR_WIDTH 0x2D /* enum (32,64) bit */
30 #define I2C_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
31 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS | \
32 PAD_CTL_ODE | PAD_CTL_SRE_FAST)
33 #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
34 #define CONFIG_SYS_I2C_SPEED 100000
37 static struct i2c_pads_info mx6q_i2c_pad_info0 = {
39 .i2c_mode = MX6Q_PAD_EIM_D21__I2C1_SCL | PC,
40 .gpio_mode = MX6Q_PAD_EIM_D21__GPIO3_IO21 | PC,
41 .gp = IMX_GPIO_NR(3, 21)
44 .i2c_mode = MX6Q_PAD_EIM_D28__I2C1_SDA | PC,
45 .gpio_mode = MX6Q_PAD_EIM_D28__GPIO3_IO28 | PC,
46 .gp = IMX_GPIO_NR(3, 28)
49 static struct i2c_pads_info mx6dl_i2c_pad_info0 = {
51 .i2c_mode = MX6DL_PAD_EIM_D21__I2C1_SCL | PC,
52 .gpio_mode = MX6DL_PAD_EIM_D21__GPIO3_IO21 | PC,
53 .gp = IMX_GPIO_NR(3, 21)
56 .i2c_mode = MX6DL_PAD_EIM_D28__I2C1_SDA | PC,
57 .gpio_mode = MX6DL_PAD_EIM_D28__GPIO3_IO28 | PC,
58 .gp = IMX_GPIO_NR(3, 28)
62 static void i2c_setup_iomux(void)
64 if (is_cpu_type(MXC_CPU_MX6Q))
65 setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &mx6q_i2c_pad_info0);
67 setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &mx6dl_i2c_pad_info0);
70 /* configure MX6Q/DUAL mmdc DDR io registers */
71 struct mx6dq_iomux_ddr_regs mx6dq_ddr_ioregs = {
72 /* SDCLK[0:1], CAS, RAS, Reset: Differential input, 40ohm */
73 .dram_sdclk_0 = 0x00020030,
74 .dram_sdclk_1 = 0x00020030,
75 .dram_cas = 0x00020030,
76 .dram_ras = 0x00020030,
77 .dram_reset = 0x00020030,
78 /* SDCKE[0:1]: 100k pull-up */
79 .dram_sdcke0 = 0x00003000,
80 .dram_sdcke1 = 0x00003000,
81 /* SDBA2: pull-up disabled */
82 .dram_sdba2 = 0x00000000,
83 /* SDODT[0:1]: 100k pull-up, 40 ohm */
84 .dram_sdodt0 = 0x00003030,
85 .dram_sdodt1 = 0x00003030,
86 /* SDQS[0:7]: Differential input, 40 ohm */
87 .dram_sdqs0 = 0x00000030,
88 .dram_sdqs1 = 0x00000030,
89 .dram_sdqs2 = 0x00000030,
90 .dram_sdqs3 = 0x00000030,
91 .dram_sdqs4 = 0x00000030,
92 .dram_sdqs5 = 0x00000030,
93 .dram_sdqs6 = 0x00000030,
94 .dram_sdqs7 = 0x00000030,
96 /* DQM[0:7]: Differential input, 40 ohm */
97 .dram_dqm0 = 0x00020030,
98 .dram_dqm1 = 0x00020030,
99 .dram_dqm2 = 0x00020030,
100 .dram_dqm3 = 0x00020030,
101 .dram_dqm4 = 0x00020030,
102 .dram_dqm5 = 0x00020030,
103 .dram_dqm6 = 0x00020030,
104 .dram_dqm7 = 0x00020030,
107 /* configure MX6Q/DUAL mmdc GRP io registers */
108 struct mx6dq_iomux_grp_regs mx6dq_grp_ioregs = {
110 .grp_ddr_type = 0x000c0000,
111 .grp_ddrmode_ctl = 0x00020000,
112 /* disable DDR pullups */
113 .grp_ddrpke = 0x00000000,
114 /* ADDR[00:16], SDBA[0:1]: 40 ohm */
115 .grp_addds = 0x00000030,
116 /* CS0/CS1/SDBA2/CKE0/CKE1/SDWE: 40 ohm */
117 .grp_ctlds = 0x00000030,
118 /* DATA[00:63]: Differential input, 40 ohm */
119 .grp_ddrmode = 0x00020000,
120 .grp_b0ds = 0x00000030,
121 .grp_b1ds = 0x00000030,
122 .grp_b2ds = 0x00000030,
123 .grp_b3ds = 0x00000030,
124 .grp_b4ds = 0x00000030,
125 .grp_b5ds = 0x00000030,
126 .grp_b6ds = 0x00000030,
127 .grp_b7ds = 0x00000030,
130 /* configure MX6SOLO/DUALLITE mmdc DDR io registers */
131 struct mx6sdl_iomux_ddr_regs mx6sdl_ddr_ioregs = {
132 /* SDCLK[0:1], CAS, RAS, Reset: Differential input, 40ohm */
133 .dram_sdclk_0 = 0x00020030,
134 .dram_sdclk_1 = 0x00020030,
135 .dram_cas = 0x00020030,
136 .dram_ras = 0x00020030,
137 .dram_reset = 0x00020030,
138 /* SDCKE[0:1]: 100k pull-up */
139 .dram_sdcke0 = 0x00003000,
140 .dram_sdcke1 = 0x00003000,
141 /* SDBA2: pull-up disabled */
142 .dram_sdba2 = 0x00000000,
143 /* SDODT[0:1]: 100k pull-up, 40 ohm */
144 .dram_sdodt0 = 0x00003030,
145 .dram_sdodt1 = 0x00003030,
146 /* SDQS[0:7]: Differential input, 40 ohm */
147 .dram_sdqs0 = 0x00000030,
148 .dram_sdqs1 = 0x00000030,
149 .dram_sdqs2 = 0x00000030,
150 .dram_sdqs3 = 0x00000030,
151 .dram_sdqs4 = 0x00000030,
152 .dram_sdqs5 = 0x00000030,
153 .dram_sdqs6 = 0x00000030,
154 .dram_sdqs7 = 0x00000030,
156 /* DQM[0:7]: Differential input, 40 ohm */
157 .dram_dqm0 = 0x00020030,
158 .dram_dqm1 = 0x00020030,
159 .dram_dqm2 = 0x00020030,
160 .dram_dqm3 = 0x00020030,
161 .dram_dqm4 = 0x00020030,
162 .dram_dqm5 = 0x00020030,
163 .dram_dqm6 = 0x00020030,
164 .dram_dqm7 = 0x00020030,
167 /* configure MX6SOLO/DUALLITE mmdc GRP io registers */
168 struct mx6sdl_iomux_grp_regs mx6sdl_grp_ioregs = {
170 .grp_ddr_type = 0x000c0000,
171 /* SDQS[0:7]: Differential input, 40 ohm */
172 .grp_ddrmode_ctl = 0x00020000,
173 /* disable DDR pullups */
174 .grp_ddrpke = 0x00000000,
175 /* ADDR[00:16], SDBA[0:1]: 40 ohm */
176 .grp_addds = 0x00000030,
177 /* CS0/CS1/SDBA2/CKE0/CKE1/SDWE: 40 ohm */
178 .grp_ctlds = 0x00000030,
179 /* DATA[00:63]: Differential input, 40 ohm */
180 .grp_ddrmode = 0x00020000,
181 .grp_b0ds = 0x00000030,
182 .grp_b1ds = 0x00000030,
183 .grp_b2ds = 0x00000030,
184 .grp_b3ds = 0x00000030,
185 .grp_b4ds = 0x00000030,
186 .grp_b5ds = 0x00000030,
187 .grp_b6ds = 0x00000030,
188 .grp_b7ds = 0x00000030,
191 /* MT41K128M16JT-125 (2Gb density) */
192 static struct mx6_ddr3_cfg mt41k128m16jt_125 = {
205 /* MT41K256M16HA-125 (4Gb density) */
206 static struct mx6_ddr3_cfg mt41k256m16ha_125 = {
220 * calibration - these are the various CPU/DDR3 combinations we support
223 static struct mx6_mmdc_calibration mx6dq_128x16_mmdc_calib = {
224 /* write leveling calibration determine */
225 .p0_mpwldectrl0 = 0x00190017,
226 /* Read DQS Gating calibration */
227 .p0_mpdgctrl0 = 0x43380347,
228 /* Read Calibration: DQS delay relative to DQ read access */
229 .p0_mprddlctl = 0x3C313539,
230 /* Write Calibration: DQ/DM delay relative to DQS write access */
231 .p0_mpwrdlctl = 0x36393C39,
234 static struct mx6_mmdc_calibration mx6dq_256x16_mmdc_calib = {
235 /* write leveling calibration determine */
236 .p0_mpwldectrl0 = 0x00190017,
237 /* Read DQS Gating calibration */
238 .p0_mpdgctrl0 = 0x43380347,
239 /* Read Calibration: DQS delay relative to DQ read access */
240 .p0_mprddlctl = 0x3C313539,
241 /* Write Calibration: DQ/DM delay relative to DQS write access */
242 .p0_mpwrdlctl = 0x36393C39,
245 static struct mx6_mmdc_calibration mx6sdl_128x16_mmdc_calib = {
246 /* write leveling calibration determine */
247 .p0_mpwldectrl0 = 0x00190017,
248 /* Read DQS Gating calibration */
249 .p0_mpdgctrl0 = 0x43380347,
250 /* Read Calibration: DQS delay relative to DQ read access */
251 .p0_mprddlctl = 0x3C313539,
252 /* Write Calibration: DQ/DM delay relative to DQS write access */
253 .p0_mpwrdlctl = 0x36393C39,
256 static struct mx6_mmdc_calibration mx6sdl_256x16_mmdc_calib = {
257 /* write leveling calibration determine */
258 .p0_mpwldectrl0 = 0x00190017,
259 /* Read DQS Gating calibration */
260 .p0_mpdgctrl0 = 0x43380347,
261 /* Read Calibration: DQS delay relative to DQ read access */
262 .p0_mprddlctl = 0x3C313539,
263 /* Write Calibration: DQ/DM delay relative to DQS write access */
264 .p0_mpwrdlctl = 0x36393C39,
267 static struct mx6_mmdc_calibration mx6dq_128x32_mmdc_calib = {
268 /* write leveling calibration determine */
269 .p0_mpwldectrl0 = 0x00190017,
270 .p0_mpwldectrl1 = 0x00140026,
271 /* Read DQS Gating calibration */
272 .p0_mpdgctrl0 = 0x43380347,
273 .p0_mpdgctrl1 = 0x433C034D,
274 /* Read Calibration: DQS delay relative to DQ read access */
275 .p0_mprddlctl = 0x3C313539,
276 /* Write Calibration: DQ/DM delay relative to DQS write access */
277 .p0_mpwrdlctl = 0x36393C39,
280 static struct mx6_mmdc_calibration mx6sdl_128x32_mmdc_calib = {
281 /* write leveling calibration determine */
282 .p0_mpwldectrl0 = 0x003C003C,
283 .p0_mpwldectrl1 = 0x001F002A,
284 /* Read DQS Gating calibration */
285 .p0_mpdgctrl0 = 0x42410244,
286 .p0_mpdgctrl1 = 0x4234023A,
287 /* Read Calibration: DQS delay relative to DQ read access */
288 .p0_mprddlctl = 0x484A4C4B,
289 /* Write Calibration: DQ/DM delay relative to DQS write access */
290 .p0_mpwrdlctl = 0x33342B32,
293 static struct mx6_mmdc_calibration mx6dq_128x64_mmdc_calib = {
294 /* write leveling calibration determine */
295 .p0_mpwldectrl0 = 0x00190017,
296 .p0_mpwldectrl1 = 0x00140026,
297 .p1_mpwldectrl0 = 0x0021001C,
298 .p1_mpwldectrl1 = 0x0011001D,
299 /* Read DQS Gating calibration */
300 .p0_mpdgctrl0 = 0x43380347,
301 .p0_mpdgctrl1 = 0x433C034D,
302 .p1_mpdgctrl0 = 0x032C0324,
303 .p1_mpdgctrl1 = 0x03310232,
304 /* Read Calibration: DQS delay relative to DQ read access */
305 .p0_mprddlctl = 0x3C313539,
306 .p1_mprddlctl = 0x37343141,
307 /* Write Calibration: DQ/DM delay relative to DQS write access */
308 .p0_mpwrdlctl = 0x36393C39,
309 .p1_mpwrdlctl = 0x42344438,
312 static struct mx6_mmdc_calibration mx6sdl_128x64_mmdc_calib = {
313 /* write leveling calibration determine */
314 .p0_mpwldectrl0 = 0x003C003C,
315 .p0_mpwldectrl1 = 0x001F002A,
316 .p1_mpwldectrl0 = 0x00330038,
317 .p1_mpwldectrl1 = 0x0022003F,
318 /* Read DQS Gating calibration */
319 .p0_mpdgctrl0 = 0x42410244,
320 .p0_mpdgctrl1 = 0x4234023A,
321 .p1_mpdgctrl0 = 0x022D022D,
322 .p1_mpdgctrl1 = 0x021C0228,
323 /* Read Calibration: DQS delay relative to DQ read access */
324 .p0_mprddlctl = 0x484A4C4B,
325 .p1_mprddlctl = 0x4B4D4E4B,
326 /* Write Calibration: DQ/DM delay relative to DQS write access */
327 .p0_mpwrdlctl = 0x33342B32,
328 .p1_mpwrdlctl = 0x3933332B,
331 static struct mx6_mmdc_calibration mx6dq_256x32_mmdc_calib = {
332 /* write leveling calibration determine */
333 .p0_mpwldectrl0 = 0x001E001A,
334 .p0_mpwldectrl1 = 0x0026001F,
335 /* Read DQS Gating calibration */
336 .p0_mpdgctrl0 = 0x43370349,
337 .p0_mpdgctrl1 = 0x032D0327,
338 /* Read Calibration: DQS delay relative to DQ read access */
339 .p0_mprddlctl = 0x3D303639,
340 /* Write Calibration: DQ/DM delay relative to DQS write access */
341 .p0_mpwrdlctl = 0x32363934,
344 static struct mx6_mmdc_calibration mx6sdl_256x32_mmdc_calib = {
345 /* write leveling calibration determine */
346 .p0_mpwldectrl0 = 0X00480047,
347 .p0_mpwldectrl1 = 0X003D003F,
348 /* Read DQS Gating calibration */
349 .p0_mpdgctrl0 = 0X423E0241,
350 .p0_mpdgctrl1 = 0X022B022C,
351 /* Read Calibration: DQS delay relative to DQ read access */
352 .p0_mprddlctl = 0X49454A4A,
353 /* Write Calibration: DQ/DM delay relative to DQS write access */
354 .p0_mpwrdlctl = 0X2E372C32,
357 static struct mx6_mmdc_calibration mx6dq_256x64_mmdc_calib = {
358 /* write leveling calibration determine */
359 .p0_mpwldectrl0 = 0X00220021,
360 .p0_mpwldectrl1 = 0X00200030,
361 .p1_mpwldectrl0 = 0X002D0027,
362 .p1_mpwldectrl1 = 0X00150026,
363 /* Read DQS Gating calibration */
364 .p0_mpdgctrl0 = 0x43330342,
365 .p0_mpdgctrl1 = 0x0339034A,
366 .p1_mpdgctrl0 = 0x032F0325,
367 .p1_mpdgctrl1 = 0x032F022E,
368 /* Read Calibration: DQS delay relative to DQ read access */
369 .p0_mprddlctl = 0X3A2E3437,
370 .p1_mprddlctl = 0X35312F3F,
371 /* Write Calibration: DQ/DM delay relative to DQS write access */
372 .p0_mpwrdlctl = 0X33363B37,
373 .p1_mpwrdlctl = 0X40304239,
376 static void spl_dram_init(int width, int size_mb, int board_model)
378 struct mx6_ddr3_cfg *mem = NULL;
379 struct mx6_mmdc_calibration *calib = NULL;
380 struct mx6_ddr_sysinfo sysinfo = {
381 /* width of data bus:0=16,1=32,2=64 */
383 /* config for full 4GB range so that get_mem_size() works */
384 .cs_density = 32, /* 32Gb per CS */
385 /* single chip select */
388 .rtt_wr = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Wr = RZQ/4 */
389 #ifdef RTT_NOM_120OHM
390 .rtt_nom = 2 /*DDR3_RTT_120_OHM*/, /* RTT_Nom = RZQ/2 */
392 .rtt_nom = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Nom = RZQ/4 */
394 .walat = 1, /* Write additional latency */
395 .ralat = 5, /* Read additional latency */
396 .mif3_mode = 3, /* Command prediction working mode */
397 .bi_on = 1, /* Bank interleaving enabled */
398 .sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */
399 .rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */
400 .pd_fast_exit = 1, /* enable precharge power-down fast exit */
404 * MMDC Calibration requires the following data:
405 * mx6_mmdc_calibration - board-specific calibration (routing delays)
406 * these calibration values depend on board routing, SoC, and DDR
407 * mx6_ddr_sysinfo - board-specific memory architecture (width/cs/etc)
408 * mx6_ddr_cfg - chip specific timing/layout details
410 if (width == 16 && size_mb == 256) {
411 mem = &mt41k128m16jt_125;
412 if (is_cpu_type(MXC_CPU_MX6Q))
413 calib = &mx6dq_128x16_mmdc_calib;
415 calib = &mx6sdl_128x16_mmdc_calib;
416 debug("2gB density\n");
417 } else if (width == 16 && size_mb == 512) {
418 mem = &mt41k256m16ha_125;
419 if (is_cpu_type(MXC_CPU_MX6Q))
420 calib = &mx6dq_256x16_mmdc_calib;
422 calib = &mx6sdl_256x16_mmdc_calib;
423 debug("4gB density\n");
424 } else if (width == 32 && size_mb == 512) {
425 mem = &mt41k128m16jt_125;
426 if (is_cpu_type(MXC_CPU_MX6Q))
427 calib = &mx6dq_128x32_mmdc_calib;
429 calib = &mx6sdl_128x32_mmdc_calib;
430 debug("2gB density\n");
431 } else if (width == 64 && size_mb == 1024) {
432 mem = &mt41k128m16jt_125;
433 if (is_cpu_type(MXC_CPU_MX6Q))
434 calib = &mx6dq_128x64_mmdc_calib;
436 calib = &mx6sdl_128x64_mmdc_calib;
437 debug("2gB density\n");
438 } else if (width == 32 && size_mb == 1024) {
439 mem = &mt41k256m16ha_125;
440 if (is_cpu_type(MXC_CPU_MX6Q))
441 calib = &mx6dq_256x32_mmdc_calib;
443 calib = &mx6sdl_256x32_mmdc_calib;
444 debug("4gB density\n");
445 } else if (width == 64 && size_mb == 2048) {
446 mem = &mt41k256m16ha_125;
447 if (is_cpu_type(MXC_CPU_MX6Q))
448 calib = &mx6dq_256x64_mmdc_calib;
449 debug("4gB density\n");
453 puts("Error: Invalid Memory Configuration\n");
457 puts("Error: Invalid Board Calibration Configuration\n");
461 if (is_cpu_type(MXC_CPU_MX6Q))
462 mx6dq_dram_iocfg(width, &mx6dq_ddr_ioregs,
465 mx6sdl_dram_iocfg(width, &mx6sdl_ddr_ioregs,
467 mx6_dram_cfg(&sysinfo, calib, mem);
470 static void ccgr_init(void)
472 struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
474 writel(0x00C03F3F, &ccm->CCGR0);
475 writel(0x0030FC03, &ccm->CCGR1);
476 writel(0x0FFFC000, &ccm->CCGR2);
477 writel(0x3FF00000, &ccm->CCGR3);
478 writel(0xFFFFF300, &ccm->CCGR4); /* enable NAND/GPMI/BCH clks */
479 writel(0x0F0000C3, &ccm->CCGR5);
480 writel(0x000003FF, &ccm->CCGR6);
483 static void gpr_init(void)
485 struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
487 /* enable AXI cache for VDOA/VPU/IPU */
488 writel(0xF00000CF, &iomux->gpr[4]);
489 /* set IPU AXI-id0 Qos=0xf(bypass) AXI-id1 Qos=0x7 */
490 writel(0x007F007F, &iomux->gpr[6]);
491 writel(0x007F007F, &iomux->gpr[7]);
495 * called from C runtime startup code (arch/arm/lib/crt0.S:_main)
496 * - we have a stack and a place to store GD, both in SRAM
497 * - no variable global data is available
499 void board_init_f(ulong dummy)
501 struct ventana_board_info ventana_info;
504 /* setup AIPS and disable watchdog */
510 /* iomux and setup of i2c */
511 board_early_init_f();
517 /* UART clocks enabled and gd valid - init serial console */
518 preloader_console_init();
520 /* read/validate EEPROM info to determine board model and SDRAM cfg */
521 board_model = read_eeprom(I2C_GSC, &ventana_info);
523 /* provide some some default: 32bit 128MB */
524 if (GW_UNKNOWN == board_model) {
525 ventana_info.sdram_width = 2;
526 ventana_info.sdram_size = 3;
529 /* configure MMDC for SDRAM width/size and per-model calibration */
530 spl_dram_init(8 << ventana_info.sdram_width,
531 16 << ventana_info.sdram_size,
535 memset(__bss_start, 0, __bss_end - __bss_start);
537 /* load/boot image from boot device */
538 board_init_r(NULL, 0);
541 void reset_cpu(ulong addr)