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![Parthiban Nallathambi](/assets/img/avatar_default.png)
MYS-6ULX is single board computer (SBC) comes with eMMC or NAND based on imx6ULL SoC from NXP and provision for expansion board. This commit adds support only for SBC with NAND. CPU: Freescale i.MX6ULL rev1.1 528 MHz (running at 396 MHz) CPU: Commercial temperature grade (0C to 95C) at 45C Reset cause: WDOG Model: MYiR i.MX6ULL MYS-6ULX Single Board Computer with NAND Board: MYiR MYS-6ULX 6ULL Single Board Computer DRAM: 256 MiB NAND: 256 MiB MMC: FSL_SDHC: 0 In: serial@2020000 Out: serial@2020000 Err: serial@2020000 Net: FEC0 Working: - Eth0 - MMC/SD - NAND - UART 1 - USB host Signed-off-by: Parthiban Nallathambi <parthiban@linumiz.com>
207 lines
5.2 KiB
C
207 lines
5.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2020 Linumiz
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* Author: Parthiban Nallathambi <parthiban@linumiz.com>
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*/
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#include <common.h>
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#include <init.h>
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#include <spl.h>
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#include <asm/arch/clock.h>
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#include <asm/io.h>
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#include <asm/arch/mx6-ddr.h>
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#include <asm/arch/mx6-pins.h>
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#include <asm/arch/crm_regs.h>
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#include <asm/arch/sys_proto.h>
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#include <fsl_esdhc_imx.h>
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/* Configuration for Micron MT41K128M16JT-125, 32M x 16 x 8 -> 256MiB */
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static struct mx6ul_iomux_grp_regs mx6_grp_ioregs = {
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.grp_addds = 0x00000030,
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.grp_ddrmode_ctl = 0x00020000,
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.grp_b0ds = 0x00000030,
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.grp_ctlds = 0x00000030,
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.grp_b1ds = 0x00000030,
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.grp_ddrpke = 0x00000000,
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.grp_ddrmode = 0x00020000,
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.grp_ddr_type = 0x000c0000,
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};
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static struct mx6ul_iomux_ddr_regs mx6_ddr_ioregs = {
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.dram_dqm0 = 0x00000030,
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.dram_dqm1 = 0x00000030,
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.dram_ras = 0x00000030,
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.dram_cas = 0x00000030,
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.dram_odt0 = 0x00000030,
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.dram_odt1 = 0x00000030,
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.dram_sdba2 = 0x00000000,
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.dram_sdclk_0 = 0x00000030,
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.dram_sdqs0 = 0x00000030,
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.dram_sdqs1 = 0x00000030,
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.dram_reset = 0x00000030,
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};
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static struct mx6_mmdc_calibration mx6_mmcd_calib = {
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.p0_mpwldectrl0 = 0x00000000,
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.p0_mpdgctrl0 = 0x41480148,
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.p0_mprddlctl = 0x40403E42,
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.p0_mpwrdlctl = 0x40405852,
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};
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struct mx6_ddr_sysinfo ddr_sysinfo = {
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.dsize = 0, /* Bus size = 16bit */
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.cs_density = 32,
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.ncs = 1,
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.cs1_mirror = 0,
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.rtt_wr = 1,
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.rtt_nom = 1,
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.walat = 1, /* Write additional latency */
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.ralat = 5, /* Read additional latency */
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.mif3_mode = 3, /* Command prediction working mode */
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.bi_on = 1, /* Bank interleaving enabled */
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.pd_fast_exit = 1,
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.sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */
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.rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */
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.ddr_type = DDR_TYPE_DDR3,
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.refsel = 1, /* Refresh cycles at 32KHz */
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.refr = 7, /* 8 refresh commands per refresh cycle */
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};
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/* MT41K128M16JT-125 (2Gb density) */
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static struct mx6_ddr3_cfg mem_ddr = {
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.mem_speed = 1600,
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.density = 2,
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.width = 16,
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.banks = 8,
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.rowaddr = 14,
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.coladdr = 10,
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.pagesz = 2,
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.trcd = 1375,
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.trcmin = 4875,
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.trasmin = 3500,
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};
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static void ccgr_init(void)
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{
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struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
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writel(0xFFFFFFFF, &ccm->CCGR0);
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writel(0xFFFFFFFF, &ccm->CCGR1);
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writel(0xFFFFFFFF, &ccm->CCGR2);
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writel(0xFFFFFFFF, &ccm->CCGR3);
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writel(0xFFFFFFFF, &ccm->CCGR4);
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writel(0xFFFFFFFF, &ccm->CCGR5);
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writel(0xFFFFFFFF, &ccm->CCGR6);
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}
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static void spl_dram_init(void)
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{
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mx6ul_dram_iocfg(mem_ddr.width, &mx6_ddr_ioregs, &mx6_grp_ioregs);
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mx6_dram_cfg(&ddr_sysinfo, &mx6_mmcd_calib, &mem_ddr);
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}
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#ifdef CONFIG_FSL_ESDHC_IMX
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#define USDHC_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \
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PAD_CTL_PUS_22K_UP | PAD_CTL_SPEED_LOW | \
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PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | \
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PAD_CTL_HYS)
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static iomux_v3_cfg_t const usdhc1_pads[] = {
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MX6_PAD_SD1_CLK__USDHC1_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_SD1_CMD__USDHC1_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_SD1_DATA0__USDHC1_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_SD1_DATA1__USDHC1_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_SD1_DATA2__USDHC1_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_SD1_DATA3__USDHC1_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_UART1_RTS_B__USDHC1_CD_B | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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};
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#ifndef CONFIG_NAND_MXS
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static iomux_v3_cfg_t const usdhc2_pads[] = {
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MX6_PAD_NAND_RE_B__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_NAND_WE_B__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_NAND_DATA00__USDHC2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_NAND_DATA01__USDHC2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_NAND_DATA02__USDHC2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_NAND_DATA03__USDHC2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_NAND_DATA04__USDHC2_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_NAND_DATA05__USDHC2_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_NAND_DATA06__USDHC2_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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MX6_PAD_NAND_DATA07__USDHC2_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
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};
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#endif
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static struct fsl_esdhc_cfg usdhc_cfg[] = {
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{
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.esdhc_base = USDHC1_BASE_ADDR,
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.max_bus_width = 4,
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},
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#ifndef CONFIG_NAND_MXS
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{
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.esdhc_base = USDHC2_BASE_ADDR,
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.max_bus_width = 8,
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},
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#endif
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};
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int board_mmc_getcd(struct mmc *mmc)
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{
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return 1;
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}
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int board_mmc_init(struct bd_info *bis)
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{
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int i, ret;
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for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) {
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switch (i) {
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case 0:
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SETUP_IOMUX_PADS(usdhc1_pads);
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usdhc_cfg[i].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
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break;
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#ifndef CONFIG_NAND_MXS
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case 1:
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SETUP_IOMUX_PADS(usdhc2_pads);
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usdhc_cfg[i].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
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break;
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#endif
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default:
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printf("Warning - USDHC%d controller not supporting\n",
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i + 1);
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return 0;
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}
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ret = fsl_esdhc_initialize(bis, &usdhc_cfg[i]);
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if (ret) {
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printf("Warning: failed to initialize mmc dev %d\n", i);
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return ret;
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}
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}
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return 0;
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}
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#endif /* CONFIG_FSL_ESDHC_IMX */
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void board_init_f(ulong dummy)
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{
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ccgr_init();
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/* Setup AIPS and disable watchdog */
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arch_cpu_init();
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/* Setup iomux and fec */
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board_early_init_f();
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/* Setup GP timer */
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timer_init();
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/* UART clocks enabled and gd valid - init serial console */
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preloader_console_init();
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/* DDR initialization */
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spl_dram_init();
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}
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