// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2022 Josua Mayer * * Copyright (C) 2015 Freescale Semiconductor, Inc. * * Author: Fabio Estevam * * Copyright (C) 2013 Jon Nettleton * * Based on SPL code from Solidrun tree, which is: * Author: Tungyi Lin * * Derived from EDM_CF_IMX6 code by TechNexion,Inc * Ported to SolidRun microSOM by Rabeeh Khoury */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include DECLARE_GLOBAL_DATA_PTR; #define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | \ PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \ PAD_CTL_SRE_FAST | PAD_CTL_HYS) #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP | \ PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \ PAD_CTL_SRE_FAST | PAD_CTL_HYS) #define USB_H1_VBUS IMX_GPIO_NR(1, 0) enum board_type { CUBOXI = 0x00, HUMMINGBOARD = 0x01, HUMMINGBOARD2 = 0x02, UNKNOWN = 0x03, }; static struct gpio_desc board_detect_desc[5]; #define MEM_STRIDE 0x4000000 static u32 get_ram_size_stride_test(u32 *base, u32 maxsize) { volatile u32 *addr; u32 save[64]; u32 cnt; u32 size; int i = 0; /* First save the data */ for (cnt = 0; cnt < maxsize; cnt += MEM_STRIDE) { addr = (volatile u32 *)((u32)base + cnt); /* pointer arith! */ sync (); save[i++] = *addr; sync (); } /* First write a signature */ * (volatile u32 *)base = 0x12345678; for (size = MEM_STRIDE; size < maxsize; size += MEM_STRIDE) { * (volatile u32 *)((u32)base + size) = size; sync (); if (* (volatile u32 *)((u32)base) == size) { /* We reached the overlapping address */ break; } } /* Restore the data */ for (cnt = (maxsize - MEM_STRIDE); i > 0; cnt -= MEM_STRIDE) { addr = (volatile u32 *)((u32)base + cnt); /* pointer arith! */ sync (); *addr = save[i--]; sync (); } return (size); } int dram_init(void) { u32 max_size = imx_ddr_size(); gd->ram_size = get_ram_size_stride_test((u32 *) CFG_SYS_SDRAM_BASE, (u32)max_size); return 0; } static iomux_v3_cfg_t const uart1_pads[] = { IOMUX_PADS(PAD_CSI0_DAT10__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)), IOMUX_PADS(PAD_CSI0_DAT11__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)), }; static iomux_v3_cfg_t const usdhc2_pads[] = { IOMUX_PADS(PAD_SD2_CLK__SD2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)), IOMUX_PADS(PAD_SD2_CMD__SD2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)), IOMUX_PADS(PAD_SD2_DAT0__SD2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), IOMUX_PADS(PAD_SD2_DAT1__SD2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), IOMUX_PADS(PAD_SD2_DAT2__SD2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), IOMUX_PADS(PAD_SD2_DAT3__SD2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), }; static iomux_v3_cfg_t const usdhc3_pads[] = { IOMUX_PADS(PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)), IOMUX_PADS(PAD_SD3_CMD__SD3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)), IOMUX_PADS(PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), IOMUX_PADS(PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), IOMUX_PADS(PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), IOMUX_PADS(PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), IOMUX_PADS(PAD_SD3_DAT4__SD3_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), IOMUX_PADS(PAD_SD3_DAT5__SD3_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), IOMUX_PADS(PAD_SD3_DAT6__SD3_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), IOMUX_PADS(PAD_SD3_DAT7__SD3_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), IOMUX_PADS(PAD_SD3_RST__SD3_RESET | MUX_PAD_CTRL(USDHC_PAD_CTRL)), }; static iomux_v3_cfg_t const board_detect[] = { /* These pins are for sensing if it is a CuBox-i or a HummingBoard */ IOMUX_PADS(PAD_KEY_ROW1__GPIO4_IO09 | MUX_PAD_CTRL(UART_PAD_CTRL)), IOMUX_PADS(PAD_EIM_DA4__GPIO3_IO04 | MUX_PAD_CTRL(UART_PAD_CTRL)), IOMUX_PADS(PAD_SD4_DAT0__GPIO2_IO08 | MUX_PAD_CTRL(UART_PAD_CTRL)), }; static iomux_v3_cfg_t const som_rev_detect[] = { /* These pins are for sensing if it is a CuBox-i or a HummingBoard */ IOMUX_PADS(PAD_CSI0_DAT14__GPIO6_IO00 | MUX_PAD_CTRL(UART_PAD_CTRL)), IOMUX_PADS(PAD_CSI0_DAT18__GPIO6_IO04 | MUX_PAD_CTRL(UART_PAD_CTRL)), }; static void setup_iomux_uart(void) { SETUP_IOMUX_PADS(uart1_pads); } int board_mmc_get_env_dev(int devno) { return devno; } #ifdef CONFIG_VIDEO_IPUV3 static void do_enable_hdmi(struct display_info_t const *dev) { imx_enable_hdmi_phy(); } struct display_info_t const displays[] = { { .bus = -1, .addr = 0, .pixfmt = IPU_PIX_FMT_RGB24, .detect = detect_hdmi, .enable = do_enable_hdmi, .mode = { .name = "HDMI", /* 1024x768@60Hz (VESA)*/ .refresh = 60, .xres = 1024, .yres = 768, .pixclock = 15384, .left_margin = 160, .right_margin = 24, .upper_margin = 29, .lower_margin = 3, .hsync_len = 136, .vsync_len = 6, .sync = FB_SYNC_EXT, .vmode = FB_VMODE_NONINTERLACED } } }; size_t display_count = ARRAY_SIZE(displays); static int setup_display(void) { struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; int reg; int timeout = 100000; enable_ipu_clock(); imx_setup_hdmi(); /* set video pll to 455MHz (24MHz * (37+11/12) / 2) */ setbits_le32(&ccm->analog_pll_video, BM_ANADIG_PLL_VIDEO_POWERDOWN); reg = readl(&ccm->analog_pll_video); reg &= ~BM_ANADIG_PLL_VIDEO_DIV_SELECT; reg |= BF_ANADIG_PLL_VIDEO_DIV_SELECT(37); reg &= ~BM_ANADIG_PLL_VIDEO_POST_DIV_SELECT; reg |= BF_ANADIG_PLL_VIDEO_POST_DIV_SELECT(1); writel(reg, &ccm->analog_pll_video); writel(BF_ANADIG_PLL_VIDEO_NUM_A(11), &ccm->analog_pll_video_num); writel(BF_ANADIG_PLL_VIDEO_DENOM_B(12), &ccm->analog_pll_video_denom); reg &= ~BM_ANADIG_PLL_VIDEO_POWERDOWN; writel(reg, &ccm->analog_pll_video); while (timeout--) if (readl(&ccm->analog_pll_video) & BM_ANADIG_PLL_VIDEO_LOCK) break; if (timeout < 0) { printf("Warning: video pll lock timeout!\n"); return -ETIMEDOUT; } reg = readl(&ccm->analog_pll_video); reg |= BM_ANADIG_PLL_VIDEO_ENABLE; reg &= ~BM_ANADIG_PLL_VIDEO_BYPASS; writel(reg, &ccm->analog_pll_video); /* gate ipu1_di0_clk */ clrbits_le32(&ccm->CCGR3, MXC_CCM_CCGR3_LDB_DI0_MASK); /* select video_pll clock / 7 for ipu1_di0_clk -> 65MHz pixclock */ reg = readl(&ccm->chsccdr); reg &= ~(MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_MASK | MXC_CCM_CHSCCDR_IPU1_DI0_PODF_MASK | MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_MASK); reg |= (2 << MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_OFFSET) | (6 << MXC_CCM_CHSCCDR_IPU1_DI0_PODF_OFFSET) | (0 << MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET); writel(reg, &ccm->chsccdr); /* enable ipu1_di0_clk */ setbits_le32(&ccm->CCGR3, MXC_CCM_CCGR3_LDB_DI0_MASK); return 0; } #endif /* CONFIG_VIDEO_IPUV3 */ static int setup_fec(void) { struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR; int ret; ret = enable_fec_anatop_clock(0, ENET_25MHZ); if (ret) return ret; /* set gpr1[ENET_CLK_SEL] */ setbits_le32(&iomuxc_regs->gpr[1], IOMUXC_GPR1_ENET_CLK_SEL_MASK); return 0; } int board_early_init_f(void) { setup_iomux_uart(); #ifdef CONFIG_SATA setup_sata(); #endif setup_fec(); return 0; } int board_init(void) { int ret = 0; /* address of boot parameters */ gd->bd->bi_boot_params = CFG_SYS_SDRAM_BASE + 0x100; #ifdef CONFIG_VIDEO_IPUV3 ret = setup_display(); #endif return ret; } static int request_detect_gpios(void) { int node; int ret; node = fdt_node_offset_by_compatible(gd->fdt_blob, 0, "solidrun,hummingboard-detect"); if (node < 0) return -ENODEV; ret = gpio_request_list_by_name_nodev(offset_to_ofnode(node), "detect-gpios", board_detect_desc, ARRAY_SIZE(board_detect_desc), GPIOD_IS_IN); return ret; } static int free_detect_gpios(void) { return gpio_free_list_nodev(board_detect_desc, ARRAY_SIZE(board_detect_desc)); } static enum board_type board_type(void) { int val1, val2, val3; SETUP_IOMUX_PADS(board_detect); /* * Machine selection - * Machine val1, val2, val3 * ---------------------------- * HB2 x x 0 * HB rev 3.x x 0 x * CBi 0 1 x * HB 1 1 x */ gpio_direction_input(IMX_GPIO_NR(2, 8)); val3 = gpio_get_value(IMX_GPIO_NR(2, 8)); if (val3 == 0) return HUMMINGBOARD2; gpio_direction_input(IMX_GPIO_NR(3, 4)); val2 = gpio_get_value(IMX_GPIO_NR(3, 4)); if (val2 == 0) return HUMMINGBOARD; gpio_direction_input(IMX_GPIO_NR(4, 9)); val1 = gpio_get_value(IMX_GPIO_NR(4, 9)); if (val1 == 0) { return CUBOXI; } else { return HUMMINGBOARD; } } static bool is_rev_15_som(void) { int val1, val2; SETUP_IOMUX_PADS(som_rev_detect); val1 = gpio_get_value(IMX_GPIO_NR(6, 0)); val2 = gpio_get_value(IMX_GPIO_NR(6, 4)); if (val1 == 1 && val2 == 0) return true; return false; } static bool has_emmc(void) { struct mmc *mmc; mmc = find_mmc_device(2); if (!mmc) return 0; return (mmc_get_op_cond(mmc, true) < 0) ? 0 : 1; } int checkboard(void) { request_detect_gpios(); switch (board_type()) { case CUBOXI: puts("Board: MX6 Cubox-i"); break; case HUMMINGBOARD: puts("Board: MX6 HummingBoard"); break; case HUMMINGBOARD2: puts("Board: MX6 HummingBoard2"); break; case UNKNOWN: default: puts("Board: Unknown\n"); goto out; } if (is_rev_15_som()) puts(" (som rev 1.5)\n"); else puts("\n"); free_detect_gpios(); out: return 0; } static int find_ethernet_phy(void) { struct mii_dev *bus = NULL; struct phy_device *phydev = NULL; int phy_addr = -ENOENT; #ifdef CONFIG_FEC_MXC bus = fec_get_miibus(ENET_BASE_ADDR, -1); if (!bus) return -ENOENT; // scan address 0, 1, 4 phydev = phy_find_by_mask(bus, 0b00010011); if (!phydev) { free(bus); return -ENOENT; } pr_debug("%s: detected ethernet phy at address %d\n", __func__, phydev->addr); phy_addr = phydev->addr; free(phydev); #endif return phy_addr; } #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) /* * Configure the correct ethernet PHYs nodes in device-tree: * - AR8035 at addresses 0 or 4: Cubox * - AR8035 at address 0: HummingBoard, HummingBoard 2 * - ADIN1300 at address 1: since SoM rev 1.9 */ int ft_board_setup(void *fdt, struct bd_info *bd) { int node_phy0, node_phy1, node_phy4; int ret, phy; bool enable_phy0 = false, enable_phy1 = false, enable_phy4 = false; enum board_type board; // detect device request_detect_gpios(); board = board_type(); free_detect_gpios(); // detect phy phy = find_ethernet_phy(); if (phy == 0 || phy == 4) { enable_phy0 = true; switch (board) { case HUMMINGBOARD: case HUMMINGBOARD2: /* atheros phy may appear only at address 0 */ break; case CUBOXI: case UNKNOWN: default: /* atheros phy may appear at either address 0 or 4 */ enable_phy4 = true; } } else if (phy == 1) { enable_phy1 = true; } else { pr_err("%s: couldn't detect ethernet phy, not patching dtb!\n", __func__); return 0; } // update all phy nodes status node_phy0 = fdt_path_offset(fdt, "/soc/bus@2100000/ethernet@2188000/mdio/ethernet-phy@0"); ret = fdt_setprop_string(fdt, node_phy0, "status", enable_phy0 ? "okay" : "disabled"); if (ret < 0 && enable_phy0) pr_err("%s: failed to enable ethernet phy at address 0 in dtb!\n", __func__); node_phy1 = fdt_path_offset(fdt, "/soc/bus@2100000/ethernet@2188000/mdio/ethernet-phy@1"); ret = fdt_setprop_string(fdt, node_phy1, "status", enable_phy1 ? "okay" : "disabled"); if (ret < 0 && enable_phy1) pr_err("%s: failed to enable ethernet phy at address 1 in dtb!\n", __func__); node_phy4 = fdt_path_offset(fdt, "/soc/bus@2100000/ethernet@2188000/mdio/ethernet-phy@4"); ret = fdt_setprop_string(fdt, node_phy4, "status", enable_phy4 ? "okay" : "disabled"); if (ret < 0 && enable_phy4) pr_err("%s: failed to enable ethernet phy at address 4 in dtb!\n", __func__); return 0; } #endif /* Override the default implementation, DT model is not accurate */ int show_board_info(void) { return checkboard(); } int board_late_init(void) { #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG request_detect_gpios(); switch (board_type()) { case CUBOXI: env_set("board_name", "CUBOXI"); break; case HUMMINGBOARD: env_set("board_name", "HUMMINGBOARD"); break; case HUMMINGBOARD2: env_set("board_name", "HUMMINGBOARD2"); break; case UNKNOWN: default: env_set("board_name", "CUBOXI"); } if (is_mx6dq()) env_set("board_rev", "MX6Q"); else env_set("board_rev", "MX6DL"); if (is_rev_15_som()) env_set("som_rev", "V15"); if (has_emmc()) env_set("has_emmc", "yes"); free_detect_gpios(); #endif return 0; } /* * This is not a perfect match. Avoid dependency on the DM GPIO driver needed * for accurate board detection. Hummingboard2 DT is good enough for U-Boot on * all Hummingboard/Cubox-i platforms. */ int board_fit_config_name_match(const char *name) { char tmp_name[36]; snprintf(tmp_name, sizeof(tmp_name), "%s-hummingboard2-emmc-som-v15", is_mx6dq() ? "imx6q" : "imx6dl"); return strcmp(name, tmp_name); } void board_boot_order(u32 *spl_boot_list) { struct src *psrc = (struct src *)SRC_BASE_ADDR; unsigned int reg = readl(&psrc->sbmr1) >> 11; u32 boot_mode = imx6_src_get_boot_mode() & IMX6_BMODE_MASK; unsigned int bmode = readl(&src_base->sbmr2); /* If bmode is serial or USB phy is active, return serial */ if (((bmode >> 24) & 0x03) == 0x01 || is_usbotg_phy_active()) { spl_boot_list[0] = BOOT_DEVICE_BOARD; return; } switch (boot_mode >> IMX6_BMODE_SHIFT) { case IMX6_BMODE_SD: case IMX6_BMODE_ESD: case IMX6_BMODE_MMC: case IMX6_BMODE_EMMC: /* * Upon reading BOOT_CFG register the following map is done: * Bit 11 and 12 of BOOT_CFG register can determine the current * mmc port * 0x1 SD2 * 0x2 SD3 */ reg &= 0x3; /* Only care about bottom 2 bits */ switch (reg) { case 1: SETUP_IOMUX_PADS(usdhc2_pads); spl_boot_list[0] = BOOT_DEVICE_MMC1; break; case 2: SETUP_IOMUX_PADS(usdhc3_pads); spl_boot_list[0] = BOOT_DEVICE_MMC2; break; } break; default: /* By default use USB downloader */ spl_boot_list[0] = BOOT_DEVICE_BOARD; break; } /* As a last resort, use serial downloader */ spl_boot_list[1] = BOOT_DEVICE_BOARD; } #ifdef CONFIG_SPL_BUILD #include static const struct mx6dq_iomux_ddr_regs mx6q_ddr_ioregs = { .dram_sdclk_0 = 0x00020030, .dram_sdclk_1 = 0x00020030, .dram_cas = 0x00020030, .dram_ras = 0x00020030, .dram_reset = 0x000c0030, .dram_sdcke0 = 0x00003000, .dram_sdcke1 = 0x00003000, .dram_sdba2 = 0x00000000, .dram_sdodt0 = 0x00003030, .dram_sdodt1 = 0x00003030, .dram_sdqs0 = 0x00000030, .dram_sdqs1 = 0x00000030, .dram_sdqs2 = 0x00000030, .dram_sdqs3 = 0x00000030, .dram_sdqs4 = 0x00000030, .dram_sdqs5 = 0x00000030, .dram_sdqs6 = 0x00000030, .dram_sdqs7 = 0x00000030, .dram_dqm0 = 0x00020030, .dram_dqm1 = 0x00020030, .dram_dqm2 = 0x00020030, .dram_dqm3 = 0x00020030, .dram_dqm4 = 0x00020030, .dram_dqm5 = 0x00020030, .dram_dqm6 = 0x00020030, .dram_dqm7 = 0x00020030, }; static const struct mx6sdl_iomux_ddr_regs mx6dl_ddr_ioregs = { .dram_sdclk_0 = 0x00000028, .dram_sdclk_1 = 0x00000028, .dram_cas = 0x00000028, .dram_ras = 0x00000028, .dram_reset = 0x000c0028, .dram_sdcke0 = 0x00003000, .dram_sdcke1 = 0x00003000, .dram_sdba2 = 0x00000000, .dram_sdodt0 = 0x00003030, .dram_sdodt1 = 0x00003030, .dram_sdqs0 = 0x00000028, .dram_sdqs1 = 0x00000028, .dram_sdqs2 = 0x00000028, .dram_sdqs3 = 0x00000028, .dram_sdqs4 = 0x00000028, .dram_sdqs5 = 0x00000028, .dram_sdqs6 = 0x00000028, .dram_sdqs7 = 0x00000028, .dram_dqm0 = 0x00000028, .dram_dqm1 = 0x00000028, .dram_dqm2 = 0x00000028, .dram_dqm3 = 0x00000028, .dram_dqm4 = 0x00000028, .dram_dqm5 = 0x00000028, .dram_dqm6 = 0x00000028, .dram_dqm7 = 0x00000028, }; static const struct mx6dq_iomux_grp_regs mx6q_grp_ioregs = { .grp_ddr_type = 0x000C0000, .grp_ddrmode_ctl = 0x00020000, .grp_ddrpke = 0x00000000, .grp_addds = 0x00000030, .grp_ctlds = 0x00000030, .grp_ddrmode = 0x00020000, .grp_b0ds = 0x00000030, .grp_b1ds = 0x00000030, .grp_b2ds = 0x00000030, .grp_b3ds = 0x00000030, .grp_b4ds = 0x00000030, .grp_b5ds = 0x00000030, .grp_b6ds = 0x00000030, .grp_b7ds = 0x00000030, }; static const struct mx6sdl_iomux_grp_regs mx6sdl_grp_ioregs = { .grp_ddr_type = 0x000c0000, .grp_ddrmode_ctl = 0x00020000, .grp_ddrpke = 0x00000000, .grp_addds = 0x00000028, .grp_ctlds = 0x00000028, .grp_ddrmode = 0x00020000, .grp_b0ds = 0x00000028, .grp_b1ds = 0x00000028, .grp_b2ds = 0x00000028, .grp_b3ds = 0x00000028, .grp_b4ds = 0x00000028, .grp_b5ds = 0x00000028, .grp_b6ds = 0x00000028, .grp_b7ds = 0x00000028, }; /* microSOM with Dual processor and 1GB memory */ static const struct mx6_mmdc_calibration mx6q_1g_mmcd_calib = { .p0_mpwldectrl0 = 0x00000000, .p0_mpwldectrl1 = 0x00000000, .p1_mpwldectrl0 = 0x00000000, .p1_mpwldectrl1 = 0x00000000, .p0_mpdgctrl0 = 0x0314031c, .p0_mpdgctrl1 = 0x023e0304, .p1_mpdgctrl0 = 0x03240330, .p1_mpdgctrl1 = 0x03180260, .p0_mprddlctl = 0x3630323c, .p1_mprddlctl = 0x3436283a, .p0_mpwrdlctl = 0x36344038, .p1_mpwrdlctl = 0x422a423c, }; /* microSOM with Quad processor and 2GB memory */ static const struct mx6_mmdc_calibration mx6q_2g_mmcd_calib = { .p0_mpwldectrl0 = 0x00000000, .p0_mpwldectrl1 = 0x00000000, .p1_mpwldectrl0 = 0x00000000, .p1_mpwldectrl1 = 0x00000000, .p0_mpdgctrl0 = 0x0314031c, .p0_mpdgctrl1 = 0x023e0304, .p1_mpdgctrl0 = 0x03240330, .p1_mpdgctrl1 = 0x03180260, .p0_mprddlctl = 0x3630323c, .p1_mprddlctl = 0x3436283a, .p0_mpwrdlctl = 0x36344038, .p1_mpwrdlctl = 0x422a423c, }; /* microSOM with Solo processor and 512MB memory */ static const struct mx6_mmdc_calibration mx6dl_512m_mmcd_calib = { .p0_mpwldectrl0 = 0x0045004D, .p0_mpwldectrl1 = 0x003A0047, .p0_mpdgctrl0 = 0x023C0224, .p0_mpdgctrl1 = 0x02000220, .p0_mprddlctl = 0x44444846, .p0_mpwrdlctl = 0x32343032, }; /* microSOM with Dual lite processor and 1GB memory */ static const struct mx6_mmdc_calibration mx6dl_1g_mmcd_calib = { .p0_mpwldectrl0 = 0x0045004D, .p0_mpwldectrl1 = 0x003A0047, .p1_mpwldectrl0 = 0x001F001F, .p1_mpwldectrl1 = 0x00210035, .p0_mpdgctrl0 = 0x023C0224, .p0_mpdgctrl1 = 0x02000220, .p1_mpdgctrl0 = 0x02200220, .p1_mpdgctrl1 = 0x02040208, .p0_mprddlctl = 0x44444846, .p1_mprddlctl = 0x4042463C, .p0_mpwrdlctl = 0x32343032, .p1_mpwrdlctl = 0x36363430, }; static struct mx6_ddr3_cfg mem_ddr_2g = { .mem_speed = 1600, .density = 2, .width = 16, .banks = 8, .rowaddr = 14, .coladdr = 10, .pagesz = 2, .trcd = 1375, .trcmin = 4875, .trasmin = 3500, }; static struct mx6_ddr3_cfg mem_ddr_4g = { .mem_speed = 1600, .density = 4, .width = 16, .banks = 8, .rowaddr = 16, .coladdr = 10, .pagesz = 2, .trcd = 1375, .trcmin = 4875, .trasmin = 3500, }; static void ccgr_init(void) { struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; writel(0x00C03F3F, &ccm->CCGR0); writel(0x0030FC03, &ccm->CCGR1); writel(0x0FFFC000, &ccm->CCGR2); writel(0x3FF00000, &ccm->CCGR3); writel(0x00FFF300, &ccm->CCGR4); writel(0x0F0000C3, &ccm->CCGR5); writel(0x000003FF, &ccm->CCGR6); } static void spl_dram_init(int width) { struct mx6_ddr_sysinfo sysinfo = { /* width of data bus: 0=16, 1=32, 2=64 */ .dsize = width / 32, /* config for full 4GB range so that get_mem_size() works */ .cs_density = 32, /* 32Gb per CS */ .ncs = 1, /* single chip select */ .cs1_mirror = 0, .rtt_wr = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Wr = RZQ/4 */ .rtt_nom = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Nom = RZQ/4 */ .walat = 1, /* Write additional latency */ .ralat = 5, /* Read additional latency */ .mif3_mode = 3, /* Command prediction working mode */ .bi_on = 1, /* Bank interleaving enabled */ .sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */ .rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */ .ddr_type = DDR_TYPE_DDR3, .refsel = 1, /* Refresh cycles at 32KHz */ .refr = 7, /* 8 refresh commands per refresh cycle */ }; if (is_mx6dq()) mx6dq_dram_iocfg(width, &mx6q_ddr_ioregs, &mx6q_grp_ioregs); else mx6sdl_dram_iocfg(width, &mx6dl_ddr_ioregs, &mx6sdl_grp_ioregs); if (is_cpu_type(MXC_CPU_MX6D)) mx6_dram_cfg(&sysinfo, &mx6q_1g_mmcd_calib, &mem_ddr_2g); else if (is_cpu_type(MXC_CPU_MX6Q)) mx6_dram_cfg(&sysinfo, &mx6q_2g_mmcd_calib, &mem_ddr_4g); else if (is_cpu_type(MXC_CPU_MX6DL)) mx6_dram_cfg(&sysinfo, &mx6dl_1g_mmcd_calib, &mem_ddr_2g); else if (is_cpu_type(MXC_CPU_MX6SOLO)) mx6_dram_cfg(&sysinfo, &mx6dl_512m_mmcd_calib, &mem_ddr_2g); } void board_init_f(ulong dummy) { /* setup AIPS and disable watchdog */ arch_cpu_init(); ccgr_init(); gpr_init(); /* iomux and setup of i2c */ board_early_init_f(); /* setup GP timer */ timer_init(); /* Enable device tree and early DM support*/ spl_early_init(); /* UART clocks enabled and gd valid - init serial console */ preloader_console_init(); /* DDR initialization */ if (is_cpu_type(MXC_CPU_MX6SOLO)) spl_dram_init(32); else spl_dram_init(64); /* Clear the BSS. */ memset(__bss_start, 0, __bss_end - __bss_start); /* load/boot image from boot device */ board_init_r(NULL, 0); } #endif