// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2015-2016 Freescale Semiconductor, Inc. * Copyright (C) 2016 Grinn */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include DECLARE_GLOBAL_DATA_PTR; #define USDHC_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \ PAD_CTL_PUS_22K_UP | PAD_CTL_SPEED_LOW | \ PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS) int dram_init(void) { gd->ram_size = imx_ddr_size(); return 0; } static iomux_v3_cfg_t const emmc_pads[] = { MX6_PAD_NAND_RE_B__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL), MX6_PAD_NAND_WE_B__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL), MX6_PAD_NAND_DATA00__USDHC2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL), MX6_PAD_NAND_DATA01__USDHC2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), MX6_PAD_NAND_DATA02__USDHC2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), MX6_PAD_NAND_DATA03__USDHC2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), MX6_PAD_NAND_DATA04__USDHC2_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL), MX6_PAD_NAND_DATA05__USDHC2_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL), MX6_PAD_NAND_DATA06__USDHC2_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL), MX6_PAD_NAND_DATA07__USDHC2_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL), /* RST_B */ MX6_PAD_NAND_ALE__GPIO4_IO10 | MUX_PAD_CTRL(NO_PAD_CTRL), }; #ifdef CONFIG_FSL_ESDHC_IMX static struct fsl_esdhc_cfg emmc_cfg = {USDHC2_BASE_ADDR, 0, 8}; #define EMMC_PWR_GPIO IMX_GPIO_NR(4, 10) int litesom_mmc_init(struct bd_info *bis) { int ret; /* eMMC */ imx_iomux_v3_setup_multiple_pads(emmc_pads, ARRAY_SIZE(emmc_pads)); gpio_direction_output(EMMC_PWR_GPIO, 0); udelay(500); gpio_direction_output(EMMC_PWR_GPIO, 1); emmc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK); ret = fsl_esdhc_initialize(bis, &emmc_cfg); if (ret) { printf("Warning: failed to initialize mmc dev 1 (eMMC)\n"); return ret; } return 0; } #endif #ifdef CONFIG_SPL_BUILD #include #include #include static struct mx6ul_iomux_grp_regs mx6_grp_ioregs = { .grp_addds = 0x00000030, .grp_ddrmode_ctl = 0x00020000, .grp_b0ds = 0x00000030, .grp_ctlds = 0x00000030, .grp_b1ds = 0x00000030, .grp_ddrpke = 0x00000000, .grp_ddrmode = 0x00020000, .grp_ddr_type = 0x000c0000, }; static struct mx6ul_iomux_ddr_regs mx6_ddr_ioregs = { .dram_dqm0 = 0x00000030, .dram_dqm1 = 0x00000030, .dram_ras = 0x00000030, .dram_cas = 0x00000030, .dram_odt0 = 0x00000030, .dram_odt1 = 0x00000030, .dram_sdba2 = 0x00000000, .dram_sdclk_0 = 0x00000030, .dram_sdqs0 = 0x00000030, .dram_sdqs1 = 0x00000030, .dram_reset = 0x00000030, }; static struct mx6_mmdc_calibration mx6_mmcd_calib = { .p0_mpwldectrl0 = 0x00000000, .p0_mpdgctrl0 = 0x41570155, .p0_mprddlctl = 0x4040474A, .p0_mpwrdlctl = 0x40405550, }; struct mx6_ddr_sysinfo ddr_sysinfo = { .dsize = 0, .cs_density = 20, .ncs = 1, .cs1_mirror = 0, .rtt_wr = 2, .rtt_nom = 1, /* RTT_Nom = RZQ/2 */ .walat = 0, /* 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 = 0, /* Refresh cycles at 64KHz */ .refr = 1, /* 2 refresh commands per refresh cycle */ }; static struct mx6_ddr3_cfg mem_ddr = { .mem_speed = 800, .density = 4, .width = 16, .banks = 8, .rowaddr = 15, .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(0xFFFFFFFF, &ccm->CCGR0); writel(0xFFFFFFFF, &ccm->CCGR1); writel(0xFFFFFFFF, &ccm->CCGR2); writel(0xFFFFFFFF, &ccm->CCGR3); writel(0xFFFFFFFF, &ccm->CCGR4); writel(0xFFFFFFFF, &ccm->CCGR5); writel(0xFFFFFFFF, &ccm->CCGR6); writel(0xFFFFFFFF, &ccm->CCGR7); } static void spl_dram_init(void) { unsigned long ram_size; mx6ul_dram_iocfg(mem_ddr.width, &mx6_ddr_ioregs, &mx6_grp_ioregs); mx6_dram_cfg(&ddr_sysinfo, &mx6_mmcd_calib, &mem_ddr); /* * Get actual RAM size, so we can adjust DDR row size for <512M * memories */ ram_size = get_ram_size((void *)CFG_SYS_SDRAM_BASE, SZ_512M); if (ram_size < SZ_512M) { mem_ddr.rowaddr = 14; mx6_dram_cfg(&ddr_sysinfo, &mx6_mmcd_calib, &mem_ddr); } } void litesom_init_f(void) { ccgr_init(); /* setup AIPS and disable watchdog */ arch_cpu_init(); #ifdef CONFIG_BOARD_EARLY_INIT_F board_early_init_f(); #endif /* setup GP timer */ timer_init(); /* UART clocks enabled and gd valid - init serial console */ preloader_console_init(); /* DDR initialization */ spl_dram_init(); } #endif