1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2022 Josua Mayer <josua@solid-run.com>
5 * Copyright (C) 2015 Freescale Semiconductor, Inc.
7 * Author: Fabio Estevam <fabio.estevam@freescale.com>
9 * Copyright (C) 2013 Jon Nettleton <jon.nettleton@gmail.com>
11 * Based on SPL code from Solidrun tree, which is:
12 * Author: Tungyi Lin <tungyilin1127@gmail.com>
14 * Derived from EDM_CF_IMX6 code by TechNexion,Inc
15 * Ported to SolidRun microSOM by Rabeeh Khoury <rabeeh@solid-run.com>
22 #include <asm/arch/clock.h>
23 #include <asm/arch/imx-regs.h>
24 #include <asm/arch/iomux.h>
25 #include <asm/arch/mx6-pins.h>
26 #include <asm/arch/mxc_hdmi.h>
28 #include <asm/global_data.h>
29 #include <linux/delay.h>
30 #include <linux/errno.h>
32 #include <asm/mach-imx/iomux-v3.h>
33 #include <asm/mach-imx/sata.h>
34 #include <asm/mach-imx/video.h>
36 #include <fsl_esdhc_imx.h>
38 #include <asm/arch/crm_regs.h>
40 #include <asm/arch/sys_proto.h>
43 #include <usb/ehci-ci.h>
47 DECLARE_GLOBAL_DATA_PTR;
49 #define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
50 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \
51 PAD_CTL_SRE_FAST | PAD_CTL_HYS)
53 #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP | \
54 PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \
55 PAD_CTL_SRE_FAST | PAD_CTL_HYS)
57 #define USB_H1_VBUS IMX_GPIO_NR(1, 0)
66 static struct gpio_desc board_detect_desc[5];
68 #define MEM_STRIDE 0x4000000
69 static u32 get_ram_size_stride_test(u32 *base, u32 maxsize)
77 /* First save the data */
78 for (cnt = 0; cnt < maxsize; cnt += MEM_STRIDE) {
79 addr = (volatile u32 *)((u32)base + cnt); /* pointer arith! */
85 /* First write a signature */
86 * (volatile u32 *)base = 0x12345678;
87 for (size = MEM_STRIDE; size < maxsize; size += MEM_STRIDE) {
88 * (volatile u32 *)((u32)base + size) = size;
90 if (* (volatile u32 *)((u32)base) == size) { /* We reached the overlapping address */
95 /* Restore the data */
96 for (cnt = (maxsize - MEM_STRIDE); i > 0; cnt -= MEM_STRIDE) {
97 addr = (volatile u32 *)((u32)base + cnt); /* pointer arith! */
108 u32 max_size = imx_ddr_size();
110 gd->ram_size = get_ram_size_stride_test((u32 *) CFG_SYS_SDRAM_BASE,
116 static iomux_v3_cfg_t const uart1_pads[] = {
117 IOMUX_PADS(PAD_CSI0_DAT10__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
118 IOMUX_PADS(PAD_CSI0_DAT11__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
121 static iomux_v3_cfg_t const usdhc2_pads[] = {
122 IOMUX_PADS(PAD_SD2_CLK__SD2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
123 IOMUX_PADS(PAD_SD2_CMD__SD2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
124 IOMUX_PADS(PAD_SD2_DAT0__SD2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
125 IOMUX_PADS(PAD_SD2_DAT1__SD2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
126 IOMUX_PADS(PAD_SD2_DAT2__SD2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
127 IOMUX_PADS(PAD_SD2_DAT3__SD2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
130 static iomux_v3_cfg_t const usdhc3_pads[] = {
131 IOMUX_PADS(PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
132 IOMUX_PADS(PAD_SD3_CMD__SD3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
133 IOMUX_PADS(PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
134 IOMUX_PADS(PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
135 IOMUX_PADS(PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
136 IOMUX_PADS(PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
137 IOMUX_PADS(PAD_SD3_DAT4__SD3_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
138 IOMUX_PADS(PAD_SD3_DAT5__SD3_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
139 IOMUX_PADS(PAD_SD3_DAT6__SD3_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
140 IOMUX_PADS(PAD_SD3_DAT7__SD3_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
141 IOMUX_PADS(PAD_SD3_RST__SD3_RESET | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
144 static iomux_v3_cfg_t const board_detect[] = {
145 /* These pins are for sensing if it is a CuBox-i or a HummingBoard */
146 IOMUX_PADS(PAD_KEY_ROW1__GPIO4_IO09 | MUX_PAD_CTRL(UART_PAD_CTRL)),
147 IOMUX_PADS(PAD_EIM_DA4__GPIO3_IO04 | MUX_PAD_CTRL(UART_PAD_CTRL)),
148 IOMUX_PADS(PAD_SD4_DAT0__GPIO2_IO08 | MUX_PAD_CTRL(UART_PAD_CTRL)),
151 static iomux_v3_cfg_t const som_rev_detect[] = {
152 /* These pins are for sensing if it is a CuBox-i or a HummingBoard */
153 IOMUX_PADS(PAD_CSI0_DAT14__GPIO6_IO00 | MUX_PAD_CTRL(UART_PAD_CTRL)),
154 IOMUX_PADS(PAD_CSI0_DAT18__GPIO6_IO04 | MUX_PAD_CTRL(UART_PAD_CTRL)),
157 static void setup_iomux_uart(void)
159 SETUP_IOMUX_PADS(uart1_pads);
162 int board_mmc_get_env_dev(int devno)
167 #ifdef CONFIG_VIDEO_IPUV3
168 static void do_enable_hdmi(struct display_info_t const *dev)
170 imx_enable_hdmi_phy();
173 struct display_info_t const displays[] = {
177 .pixfmt = IPU_PIX_FMT_RGB24,
178 .detect = detect_hdmi,
179 .enable = do_enable_hdmi,
182 /* 1024x768@60Hz (VESA)*/
194 .vmode = FB_VMODE_NONINTERLACED
199 size_t display_count = ARRAY_SIZE(displays);
201 static int setup_display(void)
203 struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
205 int timeout = 100000;
210 /* set video pll to 455MHz (24MHz * (37+11/12) / 2) */
211 setbits_le32(&ccm->analog_pll_video, BM_ANADIG_PLL_VIDEO_POWERDOWN);
213 reg = readl(&ccm->analog_pll_video);
214 reg &= ~BM_ANADIG_PLL_VIDEO_DIV_SELECT;
215 reg |= BF_ANADIG_PLL_VIDEO_DIV_SELECT(37);
216 reg &= ~BM_ANADIG_PLL_VIDEO_POST_DIV_SELECT;
217 reg |= BF_ANADIG_PLL_VIDEO_POST_DIV_SELECT(1);
218 writel(reg, &ccm->analog_pll_video);
220 writel(BF_ANADIG_PLL_VIDEO_NUM_A(11), &ccm->analog_pll_video_num);
221 writel(BF_ANADIG_PLL_VIDEO_DENOM_B(12), &ccm->analog_pll_video_denom);
223 reg &= ~BM_ANADIG_PLL_VIDEO_POWERDOWN;
224 writel(reg, &ccm->analog_pll_video);
227 if (readl(&ccm->analog_pll_video) & BM_ANADIG_PLL_VIDEO_LOCK)
230 printf("Warning: video pll lock timeout!\n");
234 reg = readl(&ccm->analog_pll_video);
235 reg |= BM_ANADIG_PLL_VIDEO_ENABLE;
236 reg &= ~BM_ANADIG_PLL_VIDEO_BYPASS;
237 writel(reg, &ccm->analog_pll_video);
239 /* gate ipu1_di0_clk */
240 clrbits_le32(&ccm->CCGR3, MXC_CCM_CCGR3_LDB_DI0_MASK);
242 /* select video_pll clock / 7 for ipu1_di0_clk -> 65MHz pixclock */
243 reg = readl(&ccm->chsccdr);
244 reg &= ~(MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_MASK |
245 MXC_CCM_CHSCCDR_IPU1_DI0_PODF_MASK |
246 MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_MASK);
247 reg |= (2 << MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_OFFSET) |
248 (6 << MXC_CCM_CHSCCDR_IPU1_DI0_PODF_OFFSET) |
249 (0 << MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
250 writel(reg, &ccm->chsccdr);
252 /* enable ipu1_di0_clk */
253 setbits_le32(&ccm->CCGR3, MXC_CCM_CCGR3_LDB_DI0_MASK);
257 #endif /* CONFIG_VIDEO_IPUV3 */
259 static int setup_fec(void)
261 struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
264 ret = enable_fec_anatop_clock(0, ENET_25MHZ);
268 /* set gpr1[ENET_CLK_SEL] */
269 setbits_le32(&iomuxc_regs->gpr[1], IOMUXC_GPR1_ENET_CLK_SEL_MASK);
274 int board_early_init_f(void)
278 if (CONFIG_IS_ENABLED(SATA))
289 /* address of boot parameters */
290 gd->bd->bi_boot_params = CFG_SYS_SDRAM_BASE + 0x100;
292 #ifdef CONFIG_VIDEO_IPUV3
293 ret = setup_display();
299 static int request_detect_gpios(void)
304 node = fdt_node_offset_by_compatible(gd->fdt_blob, 0,
305 "solidrun,hummingboard-detect");
309 ret = gpio_request_list_by_name_nodev(offset_to_ofnode(node),
310 "detect-gpios", board_detect_desc,
311 ARRAY_SIZE(board_detect_desc), GPIOD_IS_IN);
316 static int free_detect_gpios(void)
318 return gpio_free_list_nodev(board_detect_desc,
319 ARRAY_SIZE(board_detect_desc));
322 static enum board_type board_type(void)
324 int val1, val2, val3;
326 SETUP_IOMUX_PADS(board_detect);
329 * Machine selection -
330 * Machine val1, val2, val3
331 * ----------------------------
338 gpio_direction_input(IMX_GPIO_NR(2, 8));
339 val3 = gpio_get_value(IMX_GPIO_NR(2, 8));
342 return HUMMINGBOARD2;
344 gpio_direction_input(IMX_GPIO_NR(3, 4));
345 val2 = gpio_get_value(IMX_GPIO_NR(3, 4));
350 gpio_direction_input(IMX_GPIO_NR(4, 9));
351 val1 = gpio_get_value(IMX_GPIO_NR(4, 9));
360 static bool is_rev_15_som(void)
363 SETUP_IOMUX_PADS(som_rev_detect);
365 val1 = gpio_get_value(IMX_GPIO_NR(6, 0));
366 val2 = gpio_get_value(IMX_GPIO_NR(6, 4));
368 if (val1 == 1 && val2 == 0)
374 static bool has_emmc(void)
377 mmc = find_mmc_device(2);
380 return (mmc_get_op_cond(mmc, true) < 0) ? 0 : 1;
385 request_detect_gpios();
387 switch (board_type()) {
389 puts("Board: MX6 Cubox-i");
392 puts("Board: MX6 HummingBoard");
395 puts("Board: MX6 HummingBoard2");
399 puts("Board: Unknown\n");
404 puts(" (som rev 1.5)\n");
413 static int find_ethernet_phy(void)
415 struct mii_dev *bus = NULL;
416 struct phy_device *phydev = NULL;
417 int phy_addr = -ENOENT;
419 #ifdef CONFIG_FEC_MXC
420 bus = fec_get_miibus(ENET_BASE_ADDR, -1);
424 // scan address 0, 1, 4
425 phydev = phy_find_by_mask(bus, 0b00010011);
430 pr_debug("%s: detected ethernet phy at address %d\n", __func__, phydev->addr);
431 phy_addr = phydev->addr;
439 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
441 * Configure the correct ethernet PHYs nodes in device-tree:
442 * - AR8035 at addresses 0 or 4: Cubox
443 * - AR8035 at address 0: HummingBoard, HummingBoard 2
444 * - ADIN1300 at address 1: since SoM rev 1.9
446 int ft_board_setup(void *fdt, struct bd_info *bd)
448 int node_phy0, node_phy1, node_phy4;
450 bool enable_phy0 = false, enable_phy1 = false, enable_phy4 = false;
451 enum board_type board;
454 request_detect_gpios();
455 board = board_type();
459 phy = find_ethernet_phy();
460 if (phy == 0 || phy == 4) {
465 /* atheros phy may appear only at address 0 */
470 /* atheros phy may appear at either address 0 or 4 */
473 } else if (phy == 1) {
476 pr_err("%s: couldn't detect ethernet phy, not patching dtb!\n", __func__);
480 // update all phy nodes status
481 node_phy0 = fdt_path_offset(fdt, "/soc/bus@2100000/ethernet@2188000/mdio/ethernet-phy@0");
482 ret = fdt_setprop_string(fdt, node_phy0, "status", enable_phy0 ? "okay" : "disabled");
483 if (ret < 0 && enable_phy0)
484 pr_err("%s: failed to enable ethernet phy at address 0 in dtb!\n", __func__);
485 node_phy1 = fdt_path_offset(fdt, "/soc/bus@2100000/ethernet@2188000/mdio/ethernet-phy@1");
486 ret = fdt_setprop_string(fdt, node_phy1, "status", enable_phy1 ? "okay" : "disabled");
487 if (ret < 0 && enable_phy1)
488 pr_err("%s: failed to enable ethernet phy at address 1 in dtb!\n", __func__);
489 node_phy4 = fdt_path_offset(fdt, "/soc/bus@2100000/ethernet@2188000/mdio/ethernet-phy@4");
490 ret = fdt_setprop_string(fdt, node_phy4, "status", enable_phy4 ? "okay" : "disabled");
491 if (ret < 0 && enable_phy4)
492 pr_err("%s: failed to enable ethernet phy at address 4 in dtb!\n", __func__);
498 /* Override the default implementation, DT model is not accurate */
499 int show_board_info(void)
504 int board_late_init(void)
506 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
507 request_detect_gpios();
509 switch (board_type()) {
511 env_set("board_name", "CUBOXI");
514 env_set("board_name", "HUMMINGBOARD");
517 env_set("board_name", "HUMMINGBOARD2");
521 env_set("board_name", "CUBOXI");
525 env_set("board_rev", "MX6Q");
527 env_set("board_rev", "MX6DL");
530 env_set("som_rev", "V15");
533 env_set("has_emmc", "yes");
542 * This is not a perfect match. Avoid dependency on the DM GPIO driver needed
543 * for accurate board detection. Hummingboard2 DT is good enough for U-Boot on
544 * all Hummingboard/Cubox-i platforms.
546 int board_fit_config_name_match(const char *name)
550 snprintf(tmp_name, sizeof(tmp_name), "%s-hummingboard2-emmc-som-v15",
551 is_mx6dq() ? "imx6q" : "imx6dl");
553 return strcmp(name, tmp_name);
556 void board_boot_order(u32 *spl_boot_list)
558 struct src *psrc = (struct src *)SRC_BASE_ADDR;
559 unsigned int reg = readl(&psrc->sbmr1) >> 11;
560 u32 boot_mode = imx6_src_get_boot_mode() & IMX6_BMODE_MASK;
561 unsigned int bmode = readl(&src_base->sbmr2);
563 /* If bmode is serial or USB phy is active, return serial */
564 if (((bmode >> 24) & 0x03) == 0x01 || is_usbotg_phy_active()) {
565 spl_boot_list[0] = BOOT_DEVICE_BOARD;
569 switch (boot_mode >> IMX6_BMODE_SHIFT) {
573 case IMX6_BMODE_EMMC:
575 * Upon reading BOOT_CFG register the following map is done:
576 * Bit 11 and 12 of BOOT_CFG register can determine the current
582 reg &= 0x3; /* Only care about bottom 2 bits */
585 SETUP_IOMUX_PADS(usdhc2_pads);
586 spl_boot_list[0] = BOOT_DEVICE_MMC1;
589 SETUP_IOMUX_PADS(usdhc3_pads);
590 spl_boot_list[0] = BOOT_DEVICE_MMC2;
595 /* By default use USB downloader */
596 spl_boot_list[0] = BOOT_DEVICE_BOARD;
600 /* As a last resort, use serial downloader */
601 spl_boot_list[1] = BOOT_DEVICE_BOARD;
604 #ifdef CONFIG_SPL_BUILD
605 #include <asm/arch/mx6-ddr.h>
606 static const struct mx6dq_iomux_ddr_regs mx6q_ddr_ioregs = {
607 .dram_sdclk_0 = 0x00020030,
608 .dram_sdclk_1 = 0x00020030,
609 .dram_cas = 0x00020030,
610 .dram_ras = 0x00020030,
611 .dram_reset = 0x000c0030,
612 .dram_sdcke0 = 0x00003000,
613 .dram_sdcke1 = 0x00003000,
614 .dram_sdba2 = 0x00000000,
615 .dram_sdodt0 = 0x00003030,
616 .dram_sdodt1 = 0x00003030,
617 .dram_sdqs0 = 0x00000030,
618 .dram_sdqs1 = 0x00000030,
619 .dram_sdqs2 = 0x00000030,
620 .dram_sdqs3 = 0x00000030,
621 .dram_sdqs4 = 0x00000030,
622 .dram_sdqs5 = 0x00000030,
623 .dram_sdqs6 = 0x00000030,
624 .dram_sdqs7 = 0x00000030,
625 .dram_dqm0 = 0x00020030,
626 .dram_dqm1 = 0x00020030,
627 .dram_dqm2 = 0x00020030,
628 .dram_dqm3 = 0x00020030,
629 .dram_dqm4 = 0x00020030,
630 .dram_dqm5 = 0x00020030,
631 .dram_dqm6 = 0x00020030,
632 .dram_dqm7 = 0x00020030,
635 static const struct mx6sdl_iomux_ddr_regs mx6dl_ddr_ioregs = {
636 .dram_sdclk_0 = 0x00000028,
637 .dram_sdclk_1 = 0x00000028,
638 .dram_cas = 0x00000028,
639 .dram_ras = 0x00000028,
640 .dram_reset = 0x000c0028,
641 .dram_sdcke0 = 0x00003000,
642 .dram_sdcke1 = 0x00003000,
643 .dram_sdba2 = 0x00000000,
644 .dram_sdodt0 = 0x00003030,
645 .dram_sdodt1 = 0x00003030,
646 .dram_sdqs0 = 0x00000028,
647 .dram_sdqs1 = 0x00000028,
648 .dram_sdqs2 = 0x00000028,
649 .dram_sdqs3 = 0x00000028,
650 .dram_sdqs4 = 0x00000028,
651 .dram_sdqs5 = 0x00000028,
652 .dram_sdqs6 = 0x00000028,
653 .dram_sdqs7 = 0x00000028,
654 .dram_dqm0 = 0x00000028,
655 .dram_dqm1 = 0x00000028,
656 .dram_dqm2 = 0x00000028,
657 .dram_dqm3 = 0x00000028,
658 .dram_dqm4 = 0x00000028,
659 .dram_dqm5 = 0x00000028,
660 .dram_dqm6 = 0x00000028,
661 .dram_dqm7 = 0x00000028,
664 static const struct mx6dq_iomux_grp_regs mx6q_grp_ioregs = {
665 .grp_ddr_type = 0x000C0000,
666 .grp_ddrmode_ctl = 0x00020000,
667 .grp_ddrpke = 0x00000000,
668 .grp_addds = 0x00000030,
669 .grp_ctlds = 0x00000030,
670 .grp_ddrmode = 0x00020000,
671 .grp_b0ds = 0x00000030,
672 .grp_b1ds = 0x00000030,
673 .grp_b2ds = 0x00000030,
674 .grp_b3ds = 0x00000030,
675 .grp_b4ds = 0x00000030,
676 .grp_b5ds = 0x00000030,
677 .grp_b6ds = 0x00000030,
678 .grp_b7ds = 0x00000030,
681 static const struct mx6sdl_iomux_grp_regs mx6sdl_grp_ioregs = {
682 .grp_ddr_type = 0x000c0000,
683 .grp_ddrmode_ctl = 0x00020000,
684 .grp_ddrpke = 0x00000000,
685 .grp_addds = 0x00000028,
686 .grp_ctlds = 0x00000028,
687 .grp_ddrmode = 0x00020000,
688 .grp_b0ds = 0x00000028,
689 .grp_b1ds = 0x00000028,
690 .grp_b2ds = 0x00000028,
691 .grp_b3ds = 0x00000028,
692 .grp_b4ds = 0x00000028,
693 .grp_b5ds = 0x00000028,
694 .grp_b6ds = 0x00000028,
695 .grp_b7ds = 0x00000028,
698 /* microSOM with Dual processor and 1GB memory */
699 static const struct mx6_mmdc_calibration mx6q_1g_mmcd_calib = {
700 .p0_mpwldectrl0 = 0x00000000,
701 .p0_mpwldectrl1 = 0x00000000,
702 .p1_mpwldectrl0 = 0x00000000,
703 .p1_mpwldectrl1 = 0x00000000,
704 .p0_mpdgctrl0 = 0x0314031c,
705 .p0_mpdgctrl1 = 0x023e0304,
706 .p1_mpdgctrl0 = 0x03240330,
707 .p1_mpdgctrl1 = 0x03180260,
708 .p0_mprddlctl = 0x3630323c,
709 .p1_mprddlctl = 0x3436283a,
710 .p0_mpwrdlctl = 0x36344038,
711 .p1_mpwrdlctl = 0x422a423c,
714 /* microSOM with Quad processor and 2GB memory */
715 static const struct mx6_mmdc_calibration mx6q_2g_mmcd_calib = {
716 .p0_mpwldectrl0 = 0x00000000,
717 .p0_mpwldectrl1 = 0x00000000,
718 .p1_mpwldectrl0 = 0x00000000,
719 .p1_mpwldectrl1 = 0x00000000,
720 .p0_mpdgctrl0 = 0x0314031c,
721 .p0_mpdgctrl1 = 0x023e0304,
722 .p1_mpdgctrl0 = 0x03240330,
723 .p1_mpdgctrl1 = 0x03180260,
724 .p0_mprddlctl = 0x3630323c,
725 .p1_mprddlctl = 0x3436283a,
726 .p0_mpwrdlctl = 0x36344038,
727 .p1_mpwrdlctl = 0x422a423c,
730 /* microSOM with Solo processor and 512MB memory */
731 static const struct mx6_mmdc_calibration mx6dl_512m_mmcd_calib = {
732 .p0_mpwldectrl0 = 0x0045004D,
733 .p0_mpwldectrl1 = 0x003A0047,
734 .p0_mpdgctrl0 = 0x023C0224,
735 .p0_mpdgctrl1 = 0x02000220,
736 .p0_mprddlctl = 0x44444846,
737 .p0_mpwrdlctl = 0x32343032,
740 /* microSOM with Dual lite processor and 1GB memory */
741 static const struct mx6_mmdc_calibration mx6dl_1g_mmcd_calib = {
742 .p0_mpwldectrl0 = 0x0045004D,
743 .p0_mpwldectrl1 = 0x003A0047,
744 .p1_mpwldectrl0 = 0x001F001F,
745 .p1_mpwldectrl1 = 0x00210035,
746 .p0_mpdgctrl0 = 0x023C0224,
747 .p0_mpdgctrl1 = 0x02000220,
748 .p1_mpdgctrl0 = 0x02200220,
749 .p1_mpdgctrl1 = 0x02040208,
750 .p0_mprddlctl = 0x44444846,
751 .p1_mprddlctl = 0x4042463C,
752 .p0_mpwrdlctl = 0x32343032,
753 .p1_mpwrdlctl = 0x36363430,
756 static struct mx6_ddr3_cfg mem_ddr_2g = {
769 static struct mx6_ddr3_cfg mem_ddr_4g = {
782 static void ccgr_init(void)
784 struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
786 writel(0x00C03F3F, &ccm->CCGR0);
787 writel(0x0030FC03, &ccm->CCGR1);
788 writel(0x0FFFC000, &ccm->CCGR2);
789 writel(0x3FF00000, &ccm->CCGR3);
790 writel(0x00FFF300, &ccm->CCGR4);
791 writel(0x0F0000C3, &ccm->CCGR5);
792 writel(0x000003FF, &ccm->CCGR6);
795 static void spl_dram_init(int width)
797 struct mx6_ddr_sysinfo sysinfo = {
798 /* width of data bus: 0=16, 1=32, 2=64 */
800 /* config for full 4GB range so that get_mem_size() works */
801 .cs_density = 32, /* 32Gb per CS */
802 .ncs = 1, /* single chip select */
804 .rtt_wr = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Wr = RZQ/4 */
805 .rtt_nom = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Nom = RZQ/4 */
806 .walat = 1, /* Write additional latency */
807 .ralat = 5, /* Read additional latency */
808 .mif3_mode = 3, /* Command prediction working mode */
809 .bi_on = 1, /* Bank interleaving enabled */
810 .sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */
811 .rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */
812 .ddr_type = DDR_TYPE_DDR3,
813 .refsel = 1, /* Refresh cycles at 32KHz */
814 .refr = 7, /* 8 refresh commands per refresh cycle */
818 mx6dq_dram_iocfg(width, &mx6q_ddr_ioregs, &mx6q_grp_ioregs);
820 mx6sdl_dram_iocfg(width, &mx6dl_ddr_ioregs, &mx6sdl_grp_ioregs);
822 if (is_cpu_type(MXC_CPU_MX6D))
823 mx6_dram_cfg(&sysinfo, &mx6q_1g_mmcd_calib, &mem_ddr_2g);
824 else if (is_cpu_type(MXC_CPU_MX6Q))
825 mx6_dram_cfg(&sysinfo, &mx6q_2g_mmcd_calib, &mem_ddr_4g);
826 else if (is_cpu_type(MXC_CPU_MX6DL))
827 mx6_dram_cfg(&sysinfo, &mx6dl_1g_mmcd_calib, &mem_ddr_2g);
828 else if (is_cpu_type(MXC_CPU_MX6SOLO))
829 mx6_dram_cfg(&sysinfo, &mx6dl_512m_mmcd_calib, &mem_ddr_2g);
832 void board_init_f(ulong dummy)
834 /* setup AIPS and disable watchdog */
840 /* iomux and setup of i2c */
841 board_early_init_f();
846 /* Enable device tree and early DM support*/
849 /* UART clocks enabled and gd valid - init serial console */
850 preloader_console_init();
852 /* DDR initialization */
853 if (is_cpu_type(MXC_CPU_MX6SOLO))
859 memset(__bss_start, 0, __bss_end - __bss_start);
861 /* load/boot image from boot device */
862 board_init_r(NULL, 0);