1 /*
2  * Copyright (C) 2015 Freescale Semiconductor, Inc.
3  *
4  * Author: Fabio Estevam <fabio.estevam@freescale.com>
5  *
6  * Copyright (C) 2013 Jon Nettleton <jon.nettleton@gmail.com>
7  *
8  * Based on SPL code from Solidrun tree, which is:
9  * Author: Tungyi Lin <tungyilin1127@gmail.com>
10  *
11  * Derived from EDM_CF_IMX6 code by TechNexion,Inc
12  * Ported to SolidRun microSOM by Rabeeh Khoury <rabeeh@solid-run.com>
13  *
14  * SPDX-License-Identifier:	GPL-2.0+
15  */
16 
17 #include <asm/arch/clock.h>
18 #include <asm/arch/imx-regs.h>
19 #include <asm/arch/iomux.h>
20 #include <asm/arch/mx6-pins.h>
21 #include <asm/arch/mxc_hdmi.h>
22 #include <linux/errno.h>
23 #include <asm/gpio.h>
24 #include <asm/mach-imx/iomux-v3.h>
25 #include <asm/mach-imx/sata.h>
26 #include <asm/mach-imx/video.h>
27 #include <mmc.h>
28 #include <fsl_esdhc.h>
29 #include <malloc.h>
30 #include <miiphy.h>
31 #include <netdev.h>
32 #include <asm/arch/crm_regs.h>
33 #include <asm/io.h>
34 #include <asm/arch/sys_proto.h>
35 #include <spl.h>
36 #include <usb.h>
37 #include <usb/ehci-ci.h>
38 
39 DECLARE_GLOBAL_DATA_PTR;
40 
41 #define UART_PAD_CTRL  (PAD_CTL_PUS_100K_UP |			\
42 	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |			\
43 	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
44 
45 #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP |			\
46 	PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm |			\
47 	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
48 
49 #define ENET_PAD_CTRL  (PAD_CTL_PUS_100K_UP |			\
50 	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
51 
52 #define ENET_PAD_CTRL_PD  (PAD_CTL_PUS_100K_DOWN |		\
53 	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
54 
55 #define ENET_PAD_CTRL_CLK  ((PAD_CTL_PUS_100K_UP & ~PAD_CTL_PKE) | \
56 	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST)
57 
58 #define ETH_PHY_RESET	IMX_GPIO_NR(4, 15)
59 #define USB_H1_VBUS	IMX_GPIO_NR(1, 0)
60 
61 int dram_init(void)
62 {
63 	gd->ram_size = imx_ddr_size();
64 	return 0;
65 }
66 
67 static iomux_v3_cfg_t const uart1_pads[] = {
68 	IOMUX_PADS(PAD_CSI0_DAT10__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
69 	IOMUX_PADS(PAD_CSI0_DAT11__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
70 };
71 
72 static iomux_v3_cfg_t const usdhc2_pads[] = {
73 	IOMUX_PADS(PAD_SD2_CLK__SD2_CLK	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
74 	IOMUX_PADS(PAD_SD2_CMD__SD2_CMD	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
75 	IOMUX_PADS(PAD_SD2_DAT0__SD2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
76 	IOMUX_PADS(PAD_SD2_DAT1__SD2_DATA1	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
77 	IOMUX_PADS(PAD_SD2_DAT2__SD2_DATA2	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
78 	IOMUX_PADS(PAD_SD2_DAT3__SD2_DATA3	| MUX_PAD_CTRL(USDHC_PAD_CTRL)),
79 };
80 
81 static iomux_v3_cfg_t const hb_cbi_sense[] = {
82 	/* These pins are for sensing if it is a CuBox-i or a HummingBoard */
83 	IOMUX_PADS(PAD_KEY_ROW1__GPIO4_IO09  | MUX_PAD_CTRL(UART_PAD_CTRL)),
84 	IOMUX_PADS(PAD_EIM_DA4__GPIO3_IO04   | MUX_PAD_CTRL(UART_PAD_CTRL)),
85 };
86 
87 static iomux_v3_cfg_t const usb_pads[] = {
88 	IOMUX_PADS(PAD_GPIO_0__GPIO1_IO00 | MUX_PAD_CTRL(NO_PAD_CTRL)),
89 };
90 
91 static void setup_iomux_uart(void)
92 {
93 	SETUP_IOMUX_PADS(uart1_pads);
94 }
95 
96 static struct fsl_esdhc_cfg usdhc_cfg[1] = {
97 	{USDHC2_BASE_ADDR},
98 };
99 
100 int board_mmc_getcd(struct mmc *mmc)
101 {
102 	return 1; /* uSDHC2 is always present */
103 }
104 
105 int board_mmc_init(bd_t *bis)
106 {
107 	SETUP_IOMUX_PADS(usdhc2_pads);
108 	usdhc_cfg[0].esdhc_base = USDHC2_BASE_ADDR;
109 	usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
110 	gd->arch.sdhc_clk = usdhc_cfg[0].sdhc_clk;
111 
112 	return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
113 }
114 
115 static iomux_v3_cfg_t const enet_pads[] = {
116 	IOMUX_PADS(PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL)),
117 	IOMUX_PADS(PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL)),
118 	/* AR8035 reset */
119 	IOMUX_PADS(PAD_KEY_ROW4__GPIO4_IO15 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD)),
120 	/* AR8035 interrupt */
121 	IOMUX_PADS(PAD_DI0_PIN2__GPIO4_IO18 | MUX_PAD_CTRL(NO_PAD_CTRL)),
122 	/* GPIO16 -> AR8035 25MHz */
123 	IOMUX_PADS(PAD_GPIO_16__ENET_REF_CLK	  | MUX_PAD_CTRL(NO_PAD_CTRL)),
124 	IOMUX_PADS(PAD_RGMII_TXC__RGMII_TXC	  | MUX_PAD_CTRL(NO_PAD_CTRL)),
125 	IOMUX_PADS(PAD_RGMII_TD0__RGMII_TD0 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
126 	IOMUX_PADS(PAD_RGMII_TD1__RGMII_TD1 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
127 	IOMUX_PADS(PAD_RGMII_TD2__RGMII_TD2 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
128 	IOMUX_PADS(PAD_RGMII_TD3__RGMII_TD3 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
129 	IOMUX_PADS(PAD_RGMII_TX_CTL__RGMII_TX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL)),
130 	/* AR8035 CLK_25M --> ENET_REF_CLK (V22) */
131 	IOMUX_PADS(PAD_ENET_REF_CLK__ENET_TX_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL_CLK)),
132 	IOMUX_PADS(PAD_RGMII_RXC__RGMII_RXC | MUX_PAD_CTRL(ENET_PAD_CTRL)),
133 	IOMUX_PADS(PAD_RGMII_RD0__RGMII_RD0 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD)),
134 	IOMUX_PADS(PAD_RGMII_RD1__RGMII_RD1 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD)),
135 	IOMUX_PADS(PAD_RGMII_RD2__RGMII_RD2 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
136 	IOMUX_PADS(PAD_RGMII_RD3__RGMII_RD3 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
137 	IOMUX_PADS(PAD_RGMII_RX_CTL__RGMII_RX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL_PD)),
138 	IOMUX_PADS(PAD_ENET_RXD0__GPIO1_IO27 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD)),
139 	IOMUX_PADS(PAD_ENET_RXD1__GPIO1_IO26 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD)),
140 };
141 
142 static void setup_iomux_enet(void)
143 {
144 	SETUP_IOMUX_PADS(enet_pads);
145 
146 	gpio_direction_output(ETH_PHY_RESET, 0);
147 	mdelay(10);
148 	gpio_set_value(ETH_PHY_RESET, 1);
149 	udelay(100);
150 }
151 
152 int board_phy_config(struct phy_device *phydev)
153 {
154 	if (phydev->drv->config)
155 		phydev->drv->config(phydev);
156 
157 	return 0;
158 }
159 
160 /* On Cuboxi Ethernet PHY can be located at addresses 0x0 or 0x4 */
161 #define ETH_PHY_MASK	((1 << 0x0) | (1 << 0x4))
162 
163 int board_eth_init(bd_t *bis)
164 {
165 	struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
166 	struct mii_dev *bus;
167 	struct phy_device *phydev;
168 
169 	int ret = enable_fec_anatop_clock(0, ENET_25MHZ);
170 	if (ret)
171 		return ret;
172 
173 	/* set gpr1[ENET_CLK_SEL] */
174 	setbits_le32(&iomuxc_regs->gpr[1], IOMUXC_GPR1_ENET_CLK_SEL_MASK);
175 
176 	setup_iomux_enet();
177 
178 	bus = fec_get_miibus(IMX_FEC_BASE, -1);
179 	if (!bus)
180 		return -EINVAL;
181 
182 	phydev = phy_find_by_mask(bus, ETH_PHY_MASK, PHY_INTERFACE_MODE_RGMII);
183 	if (!phydev) {
184 		ret = -EINVAL;
185 		goto free_bus;
186 	}
187 
188 	debug("using phy at address %d\n", phydev->addr);
189 	ret = fec_probe(bis, -1, IMX_FEC_BASE, bus, phydev);
190 	if (ret)
191 		goto free_phydev;
192 
193 	return 0;
194 
195 free_phydev:
196 	free(phydev);
197 free_bus:
198 	free(bus);
199 	return ret;
200 }
201 
202 #ifdef CONFIG_VIDEO_IPUV3
203 static void do_enable_hdmi(struct display_info_t const *dev)
204 {
205 	imx_enable_hdmi_phy();
206 }
207 
208 struct display_info_t const displays[] = {
209 	{
210 		.bus	= -1,
211 		.addr	= 0,
212 		.pixfmt	= IPU_PIX_FMT_RGB24,
213 		.detect	= detect_hdmi,
214 		.enable	= do_enable_hdmi,
215 		.mode	= {
216 			.name           = "HDMI",
217 			/* 1024x768@60Hz (VESA)*/
218 			.refresh        = 60,
219 			.xres           = 1024,
220 			.yres           = 768,
221 			.pixclock       = 15384,
222 			.left_margin    = 160,
223 			.right_margin   = 24,
224 			.upper_margin   = 29,
225 			.lower_margin   = 3,
226 			.hsync_len      = 136,
227 			.vsync_len      = 6,
228 			.sync           = FB_SYNC_EXT,
229 			.vmode          = FB_VMODE_NONINTERLACED
230 		}
231 	}
232 };
233 
234 size_t display_count = ARRAY_SIZE(displays);
235 
236 static int setup_display(void)
237 {
238 	struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
239 	int reg;
240 	int timeout = 100000;
241 
242 	enable_ipu_clock();
243 	imx_setup_hdmi();
244 
245 	/* set video pll to 455MHz (24MHz * (37+11/12) / 2) */
246 	setbits_le32(&ccm->analog_pll_video, BM_ANADIG_PLL_VIDEO_POWERDOWN);
247 
248 	reg = readl(&ccm->analog_pll_video);
249 	reg &= ~BM_ANADIG_PLL_VIDEO_DIV_SELECT;
250 	reg |= BF_ANADIG_PLL_VIDEO_DIV_SELECT(37);
251 	reg &= ~BM_ANADIG_PLL_VIDEO_POST_DIV_SELECT;
252 	reg |= BF_ANADIG_PLL_VIDEO_POST_DIV_SELECT(1);
253 	writel(reg, &ccm->analog_pll_video);
254 
255 	writel(BF_ANADIG_PLL_VIDEO_NUM_A(11), &ccm->analog_pll_video_num);
256 	writel(BF_ANADIG_PLL_VIDEO_DENOM_B(12), &ccm->analog_pll_video_denom);
257 
258 	reg &= ~BM_ANADIG_PLL_VIDEO_POWERDOWN;
259 	writel(reg, &ccm->analog_pll_video);
260 
261 	while (timeout--)
262 		if (readl(&ccm->analog_pll_video) & BM_ANADIG_PLL_VIDEO_LOCK)
263 			break;
264 	if (timeout < 0) {
265 		printf("Warning: video pll lock timeout!\n");
266 		return -ETIMEDOUT;
267 	}
268 
269 	reg = readl(&ccm->analog_pll_video);
270 	reg |= BM_ANADIG_PLL_VIDEO_ENABLE;
271 	reg &= ~BM_ANADIG_PLL_VIDEO_BYPASS;
272 	writel(reg, &ccm->analog_pll_video);
273 
274 	/* gate ipu1_di0_clk */
275 	clrbits_le32(&ccm->CCGR3, MXC_CCM_CCGR3_LDB_DI0_MASK);
276 
277 	/* select video_pll clock / 7  for ipu1_di0_clk -> 65MHz pixclock */
278 	reg = readl(&ccm->chsccdr);
279 	reg &= ~(MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_MASK |
280 		 MXC_CCM_CHSCCDR_IPU1_DI0_PODF_MASK |
281 		 MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_MASK);
282 	reg |= (2 << MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_OFFSET) |
283 	       (6 << MXC_CCM_CHSCCDR_IPU1_DI0_PODF_OFFSET) |
284 	       (0 << MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
285 	writel(reg, &ccm->chsccdr);
286 
287 	/* enable ipu1_di0_clk */
288 	setbits_le32(&ccm->CCGR3, MXC_CCM_CCGR3_LDB_DI0_MASK);
289 
290 	return 0;
291 }
292 #endif /* CONFIG_VIDEO_IPUV3 */
293 
294 #ifdef CONFIG_USB_EHCI_MX6
295 static void setup_usb(void)
296 {
297 	SETUP_IOMUX_PADS(usb_pads);
298 }
299 
300 int board_ehci_hcd_init(int port)
301 {
302 	if (port == 1)
303 		gpio_direction_output(USB_H1_VBUS, 1);
304 
305 	return 0;
306 }
307 #endif
308 
309 int board_early_init_f(void)
310 {
311 	int ret = 0;
312 	setup_iomux_uart();
313 
314 #ifdef CONFIG_VIDEO_IPUV3
315 	ret = setup_display();
316 #endif
317 
318 #ifdef CONFIG_CMD_SATA
319 	setup_sata();
320 #endif
321 
322 #ifdef CONFIG_USB_EHCI_MX6
323 	setup_usb();
324 #endif
325 	return ret;
326 }
327 
328 int board_init(void)
329 {
330 	/* address of boot parameters */
331 	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
332 
333 	return 0;
334 }
335 
336 static bool is_hummingboard(void)
337 {
338 	int val1, val2;
339 
340 	SETUP_IOMUX_PADS(hb_cbi_sense);
341 
342 	gpio_direction_input(IMX_GPIO_NR(4, 9));
343 	gpio_direction_input(IMX_GPIO_NR(3, 4));
344 
345 	val1 = gpio_get_value(IMX_GPIO_NR(4, 9));
346 	val2 = gpio_get_value(IMX_GPIO_NR(3, 4));
347 
348 	/*
349 	 * Machine selection -
350 	 * Machine        val1, val2
351 	 * -------------------------
352 	 * HB2            x     x
353 	 * HB rev 3.x     x     0
354 	 * CBi            0     1
355 	 * HB             1     1
356 	 */
357 
358 	if (val2 == 0)
359 		return true;
360 	else if (val1 == 0)
361 		return false;
362 	else
363 		return true;
364 }
365 
366 static bool is_hummingboard2(void)
367 {
368 	int val1;
369 
370 	SETUP_IOMUX_PADS(hb_cbi_sense);
371 
372 	gpio_direction_input(IMX_GPIO_NR(2, 8));
373 
374         val1 = gpio_get_value(IMX_GPIO_NR(2, 8));
375 
376 	/*
377 	 * Machine selection -
378 	 * Machine        val1
379 	 * -------------------
380 	 * HB2            0
381 	 * HB rev 3.x     x
382 	 * CBi            x
383 	 * HB             x
384 	 */
385 
386 	if (val1 == 0)
387 		return true;
388 	else
389 		return false;
390 }
391 
392 int checkboard(void)
393 {
394 	if (is_hummingboard2())
395 		puts("Board: MX6 Hummingboard2\n");
396 	else if (is_hummingboard())
397 		puts("Board: MX6 Hummingboard\n");
398 	else
399 		puts("Board: MX6 Cubox-i\n");
400 
401 	return 0;
402 }
403 
404 int board_late_init(void)
405 {
406 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
407 	if (is_hummingboard2())
408 		env_set("board_name", "HUMMINGBOARD2");
409 	else if (is_hummingboard())
410 		env_set("board_name", "HUMMINGBOARD");
411 	else
412 		env_set("board_name", "CUBOXI");
413 
414 	if (is_mx6dq())
415 		env_set("board_rev", "MX6Q");
416 	else
417 		env_set("board_rev", "MX6DL");
418 #endif
419 
420 	return 0;
421 }
422 
423 #ifdef CONFIG_SPL_BUILD
424 #include <asm/arch/mx6-ddr.h>
425 static const struct mx6dq_iomux_ddr_regs mx6q_ddr_ioregs = {
426 	.dram_sdclk_0 =  0x00020030,
427 	.dram_sdclk_1 =  0x00020030,
428 	.dram_cas =  0x00020030,
429 	.dram_ras =  0x00020030,
430 	.dram_reset =  0x00020030,
431 	.dram_sdcke0 =  0x00003000,
432 	.dram_sdcke1 =  0x00003000,
433 	.dram_sdba2 =  0x00000000,
434 	.dram_sdodt0 =  0x00003030,
435 	.dram_sdodt1 =  0x00003030,
436 	.dram_sdqs0 =  0x00000030,
437 	.dram_sdqs1 =  0x00000030,
438 	.dram_sdqs2 =  0x00000030,
439 	.dram_sdqs3 =  0x00000030,
440 	.dram_sdqs4 =  0x00000030,
441 	.dram_sdqs5 =  0x00000030,
442 	.dram_sdqs6 =  0x00000030,
443 	.dram_sdqs7 =  0x00000030,
444 	.dram_dqm0 =  0x00020030,
445 	.dram_dqm1 =  0x00020030,
446 	.dram_dqm2 =  0x00020030,
447 	.dram_dqm3 =  0x00020030,
448 	.dram_dqm4 =  0x00020030,
449 	.dram_dqm5 =  0x00020030,
450 	.dram_dqm6 =  0x00020030,
451 	.dram_dqm7 =  0x00020030,
452 };
453 
454 static const struct mx6sdl_iomux_ddr_regs mx6dl_ddr_ioregs = {
455 	.dram_sdclk_0 = 0x00000028,
456 	.dram_sdclk_1 = 0x00000028,
457 	.dram_cas =	0x00000028,
458 	.dram_ras =	0x00000028,
459 	.dram_reset =	0x000c0028,
460 	.dram_sdcke0 =	0x00003000,
461 	.dram_sdcke1 =	0x00003000,
462 	.dram_sdba2 =	0x00000000,
463 	.dram_sdodt0 =	0x00003030,
464 	.dram_sdodt1 =	0x00003030,
465 	.dram_sdqs0 =	0x00000028,
466 	.dram_sdqs1 =	0x00000028,
467 	.dram_sdqs2 =	0x00000028,
468 	.dram_sdqs3 =	0x00000028,
469 	.dram_sdqs4 =	0x00000028,
470 	.dram_sdqs5 =	0x00000028,
471 	.dram_sdqs6 =	0x00000028,
472 	.dram_sdqs7 =	0x00000028,
473 	.dram_dqm0 =	0x00000028,
474 	.dram_dqm1 =	0x00000028,
475 	.dram_dqm2 =	0x00000028,
476 	.dram_dqm3 =	0x00000028,
477 	.dram_dqm4 =	0x00000028,
478 	.dram_dqm5 =	0x00000028,
479 	.dram_dqm6 =	0x00000028,
480 	.dram_dqm7 =	0x00000028,
481 };
482 
483 static const struct mx6dq_iomux_grp_regs mx6q_grp_ioregs = {
484 	.grp_ddr_type =  0x000C0000,
485 	.grp_ddrmode_ctl =  0x00020000,
486 	.grp_ddrpke =  0x00000000,
487 	.grp_addds =  0x00000030,
488 	.grp_ctlds =  0x00000030,
489 	.grp_ddrmode =  0x00020000,
490 	.grp_b0ds =  0x00000030,
491 	.grp_b1ds =  0x00000030,
492 	.grp_b2ds =  0x00000030,
493 	.grp_b3ds =  0x00000030,
494 	.grp_b4ds =  0x00000030,
495 	.grp_b5ds =  0x00000030,
496 	.grp_b6ds =  0x00000030,
497 	.grp_b7ds =  0x00000030,
498 };
499 
500 static const struct mx6sdl_iomux_grp_regs mx6sdl_grp_ioregs = {
501 	.grp_ddr_type = 0x000c0000,
502 	.grp_ddrmode_ctl = 0x00020000,
503 	.grp_ddrpke = 0x00000000,
504 	.grp_addds = 0x00000028,
505 	.grp_ctlds = 0x00000028,
506 	.grp_ddrmode = 0x00020000,
507 	.grp_b0ds = 0x00000028,
508 	.grp_b1ds = 0x00000028,
509 	.grp_b2ds = 0x00000028,
510 	.grp_b3ds = 0x00000028,
511 	.grp_b4ds = 0x00000028,
512 	.grp_b5ds = 0x00000028,
513 	.grp_b6ds = 0x00000028,
514 	.grp_b7ds = 0x00000028,
515 };
516 
517 /* microSOM with Dual processor and 1GB memory */
518 static const struct mx6_mmdc_calibration mx6q_1g_mmcd_calib = {
519 	.p0_mpwldectrl0 =  0x00000000,
520 	.p0_mpwldectrl1 =  0x00000000,
521 	.p1_mpwldectrl0 =  0x00000000,
522 	.p1_mpwldectrl1 =  0x00000000,
523 	.p0_mpdgctrl0 =    0x0314031c,
524 	.p0_mpdgctrl1 =    0x023e0304,
525 	.p1_mpdgctrl0 =    0x03240330,
526 	.p1_mpdgctrl1 =    0x03180260,
527 	.p0_mprddlctl =    0x3630323c,
528 	.p1_mprddlctl =    0x3436283a,
529 	.p0_mpwrdlctl =    0x36344038,
530 	.p1_mpwrdlctl =    0x422a423c,
531 };
532 
533 /* microSOM with Quad processor and 2GB memory */
534 static const struct mx6_mmdc_calibration mx6q_2g_mmcd_calib = {
535 	.p0_mpwldectrl0 =  0x00000000,
536 	.p0_mpwldectrl1 =  0x00000000,
537 	.p1_mpwldectrl0 =  0x00000000,
538 	.p1_mpwldectrl1 =  0x00000000,
539 	.p0_mpdgctrl0 =    0x0314031c,
540 	.p0_mpdgctrl1 =    0x023e0304,
541 	.p1_mpdgctrl0 =    0x03240330,
542 	.p1_mpdgctrl1 =    0x03180260,
543 	.p0_mprddlctl =    0x3630323c,
544 	.p1_mprddlctl =    0x3436283a,
545 	.p0_mpwrdlctl =    0x36344038,
546 	.p1_mpwrdlctl =    0x422a423c,
547 };
548 
549 /* microSOM with Solo processor and 512MB memory */
550 static const struct mx6_mmdc_calibration mx6dl_512m_mmcd_calib = {
551 	.p0_mpwldectrl0 = 0x0045004D,
552 	.p0_mpwldectrl1 = 0x003A0047,
553 	.p0_mpdgctrl0 =   0x023C0224,
554 	.p0_mpdgctrl1 =   0x02000220,
555 	.p0_mprddlctl =   0x44444846,
556 	.p0_mpwrdlctl =   0x32343032,
557 };
558 
559 /* microSOM with Dual lite processor and 1GB memory */
560 static const struct mx6_mmdc_calibration mx6dl_1g_mmcd_calib = {
561 	.p0_mpwldectrl0 =  0x0045004D,
562 	.p0_mpwldectrl1 =  0x003A0047,
563 	.p1_mpwldectrl0 =  0x001F001F,
564 	.p1_mpwldectrl1 =  0x00210035,
565 	.p0_mpdgctrl0 =    0x023C0224,
566 	.p0_mpdgctrl1 =    0x02000220,
567 	.p1_mpdgctrl0 =    0x02200220,
568 	.p1_mpdgctrl1 =    0x02040208,
569 	.p0_mprddlctl =    0x44444846,
570 	.p1_mprddlctl =    0x4042463C,
571 	.p0_mpwrdlctl =    0x32343032,
572 	.p1_mpwrdlctl =    0x36363430,
573 };
574 
575 static struct mx6_ddr3_cfg mem_ddr_2g = {
576 	.mem_speed = 1600,
577 	.density   = 2,
578 	.width     = 16,
579 	.banks     = 8,
580 	.rowaddr   = 14,
581 	.coladdr   = 10,
582 	.pagesz    = 2,
583 	.trcd      = 1375,
584 	.trcmin    = 4875,
585 	.trasmin   = 3500,
586 	.SRT       = 1,
587 };
588 
589 static struct mx6_ddr3_cfg mem_ddr_4g = {
590 	.mem_speed = 1600,
591 	.density = 4,
592 	.width = 16,
593 	.banks = 8,
594 	.rowaddr = 15,
595 	.coladdr = 10,
596 	.pagesz = 2,
597 	.trcd = 1375,
598 	.trcmin = 4875,
599 	.trasmin = 3500,
600 };
601 
602 static void ccgr_init(void)
603 {
604 	struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
605 
606 	writel(0x00C03F3F, &ccm->CCGR0);
607 	writel(0x0030FC03, &ccm->CCGR1);
608 	writel(0x0FFFC000, &ccm->CCGR2);
609 	writel(0x3FF00000, &ccm->CCGR3);
610 	writel(0x00FFF300, &ccm->CCGR4);
611 	writel(0x0F0000C3, &ccm->CCGR5);
612 	writel(0x000003FF, &ccm->CCGR6);
613 }
614 
615 static void spl_dram_init(int width)
616 {
617 	struct mx6_ddr_sysinfo sysinfo = {
618 		/* width of data bus: 0=16, 1=32, 2=64 */
619 		.dsize = width / 32,
620 		/* config for full 4GB range so that get_mem_size() works */
621 		.cs_density = 32,	/* 32Gb per CS */
622 		.ncs = 1,		/* single chip select */
623 		.cs1_mirror = 0,
624 		.rtt_wr = 1 /*DDR3_RTT_60_OHM*/,	/* RTT_Wr = RZQ/4 */
625 		.rtt_nom = 1 /*DDR3_RTT_60_OHM*/,	/* RTT_Nom = RZQ/4 */
626 		.walat = 1,	/* Write additional latency */
627 		.ralat = 5,	/* Read additional latency */
628 		.mif3_mode = 3,	/* Command prediction working mode */
629 		.bi_on = 1,	/* Bank interleaving enabled */
630 		.sde_to_rst = 0x10,	/* 14 cycles, 200us (JEDEC default) */
631 		.rst_to_cke = 0x23,	/* 33 cycles, 500us (JEDEC default) */
632 		.ddr_type = DDR_TYPE_DDR3,
633 		.refsel = 1,	/* Refresh cycles at 32KHz */
634 		.refr = 7,	/* 8 refresh commands per refresh cycle */
635 	};
636 
637 	if (is_mx6dq())
638 		mx6dq_dram_iocfg(width, &mx6q_ddr_ioregs, &mx6q_grp_ioregs);
639 	else
640 		mx6sdl_dram_iocfg(width, &mx6dl_ddr_ioregs, &mx6sdl_grp_ioregs);
641 
642 	if (is_cpu_type(MXC_CPU_MX6D))
643 		mx6_dram_cfg(&sysinfo, &mx6q_1g_mmcd_calib, &mem_ddr_2g);
644 	else if (is_cpu_type(MXC_CPU_MX6Q))
645 		mx6_dram_cfg(&sysinfo, &mx6q_2g_mmcd_calib, &mem_ddr_4g);
646 	else if (is_cpu_type(MXC_CPU_MX6DL))
647 		mx6_dram_cfg(&sysinfo, &mx6dl_1g_mmcd_calib, &mem_ddr_2g);
648 	else if (is_cpu_type(MXC_CPU_MX6SOLO))
649 		mx6_dram_cfg(&sysinfo, &mx6dl_512m_mmcd_calib, &mem_ddr_2g);
650 }
651 
652 void board_init_f(ulong dummy)
653 {
654 	/* setup AIPS and disable watchdog */
655 	arch_cpu_init();
656 
657 	ccgr_init();
658 	gpr_init();
659 
660 	/* iomux and setup of i2c */
661 	board_early_init_f();
662 
663 	/* setup GP timer */
664 	timer_init();
665 
666 	/* UART clocks enabled and gd valid - init serial console */
667 	preloader_console_init();
668 
669 	/* DDR initialization */
670 	if (is_cpu_type(MXC_CPU_MX6SOLO))
671 		spl_dram_init(32);
672 	else
673 		spl_dram_init(64);
674 
675 	/* Clear the BSS. */
676 	memset(__bss_start, 0, __bss_end - __bss_start);
677 
678 	/* load/boot image from boot device */
679 	board_init_r(NULL, 0);
680 }
681 #endif
682