arch/arm/mach-imx/mx6/opos6ul.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2018 Armadeus Systems
   4  */
   5
   6 #include <asm/arch/clock.h>
   7 #include <asm/arch/crm_regs.h>
   8 #include <asm/arch/imx-regs.h>
   9 #include <asm/arch/iomux.h>
  10 #include <asm/arch/mx6-pins.h>
  11 #include <asm/arch/sys_proto.h>
  12 #include <asm/gpio.h>
  13 #include <asm/mach-imx/iomux-v3.h>
  14 #include <asm/io.h>
  15 #include <common.h>
  16 #include <env.h>
  17 #include <environment.h>
  18
  19 DECLARE_GLOBAL_DATA_PTR;
  20
  21 #ifdef CONFIG_FEC_MXC
  22 #include <miiphy.h>
  23
  24 #define MDIO_PAD_CTRL ( \
  25         PAD_CTL_HYS | PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
  26         PAD_CTL_DSE_40ohm \
  27 )
  28
  29 #define ENET_PAD_CTRL_PU ( \
  30         PAD_CTL_HYS | PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
  31         PAD_CTL_DSE_40ohm \
  32 )
  33
  34 #define ENET_PAD_CTRL_PD ( \
  35         PAD_CTL_HYS | PAD_CTL_PUS_100K_DOWN | PAD_CTL_SPEED_MED | \
  36         PAD_CTL_DSE_40ohm \
  37 )
  38
  39 #define ENET_CLK_PAD_CTRL ( \
  40         PAD_CTL_HYS | PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_LOW | \
  41         PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST \
  42 )
  43
  44 static iomux_v3_cfg_t const fec1_pads[] = {
  45         MX6_PAD_GPIO1_IO06__ENET1_MDIO        | MUX_PAD_CTRL(MDIO_PAD_CTRL),
  46         MX6_PAD_GPIO1_IO07__ENET1_MDC         | MUX_PAD_CTRL(MDIO_PAD_CTRL),
  47         MX6_PAD_ENET1_RX_ER__ENET1_RX_ER      | MUX_PAD_CTRL(ENET_PAD_CTRL_PD),
  48         MX6_PAD_ENET1_RX_EN__ENET1_RX_EN      | MUX_PAD_CTRL(ENET_PAD_CTRL_PD),
  49         MX6_PAD_ENET1_RX_DATA1__ENET1_RDATA01 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD),
  50         MX6_PAD_ENET1_RX_DATA0__ENET1_RDATA00 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD),
  51         MX6_PAD_ENET1_TX_DATA0__ENET1_TDATA00 | MUX_PAD_CTRL(ENET_PAD_CTRL_PU),
  52         MX6_PAD_ENET1_TX_DATA1__ENET1_TDATA01 | MUX_PAD_CTRL(ENET_PAD_CTRL_PU),
  53         MX6_PAD_ENET1_TX_EN__ENET1_TX_EN      | MUX_PAD_CTRL(ENET_PAD_CTRL_PU),
  54         /* PHY Int */
  55         MX6_PAD_NAND_DQS__GPIO4_IO16          | MUX_PAD_CTRL(ENET_PAD_CTRL_PU),
  56         /* PHY Reset */
  57         MX6_PAD_NAND_DATA00__GPIO4_IO02       | MUX_PAD_CTRL(ENET_PAD_CTRL_PD),
  58         MX6_PAD_ENET1_TX_CLK__ENET1_REF_CLK1  | MUX_PAD_CTRL(ENET_CLK_PAD_CTRL),
  59 };
  60
  61 int board_phy_config(struct phy_device *phydev)
  62 {
  63         phy_write(phydev, MDIO_DEVAD_NONE, 0x1f, 0x8190);
  64
  65         if (phydev->drv->config)
  66                 phydev->drv->config(phydev);
  67
  68         return 0;
  69 }
  70
  71 int board_eth_init(bd_t *bis)
  72 {
  73         struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
  74         struct gpio_desc rst;
  75         int ret;
  76
  77         /* Use 50M anatop loopback REF_CLK1 for ENET1,
  78          * clear gpr1[13], set gpr1[17] */
  79         clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC1_MASK,
  80                         IOMUX_GPR1_FEC1_CLOCK_MUX1_SEL_MASK);
  81
  82         ret = enable_fec_anatop_clock(0, ENET_50MHZ);
  83         if (ret)
  84                 return ret;
  85
  86         enable_enet_clk(1);
  87
  88         imx_iomux_v3_setup_multiple_pads(fec1_pads, ARRAY_SIZE(fec1_pads));
  89
  90         ret = dm_gpio_lookup_name("GPIO4_2", &rst);
  91         if (ret) {
  92                 printf("Cannot get GPIO4_2\n");
  93                 return ret;
  94         }
  95
  96         ret = dm_gpio_request(&rst, "phy-rst");
  97         if (ret) {
  98                 printf("Cannot request GPIO4_2\n");
  99                 return ret;
 100         }
 101
 102         dm_gpio_set_dir_flags(&rst, GPIOD_IS_OUT);
 103         dm_gpio_set_value(&rst, 0);
 104         udelay(1000);
 105         dm_gpio_set_value(&rst, 1);
 106
 107         return fecmxc_initialize(bis);
 108 }
 109 #endif /* CONFIG_FEC_MXC */
 110
 111 int board_init(void)
 112 {
 113         /* Address of boot parameters */
 114         gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
 115
 116         return 0;
 117 }
 118
 119 int __weak opos6ul_board_late_init(void)
 120 {
 121         return 0;
 122 }
 123
 124 int board_late_init(void)
 125 {
 126         struct src *psrc = (struct src *)SRC_BASE_ADDR;
 127         unsigned reg = readl(&psrc->sbmr2);
 128
 129         /* In bootstrap don't use the env vars */
 130         if (((reg & 0x3000000) >> 24) == 0x1) {
 131                 set_default_env(NULL, 0);
 132                 env_set("preboot", "");
 133         }
 134
 135         return opos6ul_board_late_init();
 136 }
 137
 138 int dram_init(void)
 139 {
 140         gd->ram_size = imx_ddr_size();
 141
 142         return 0;
 143 }
 144
 145 #ifdef CONFIG_SPL_BUILD
 146 #include <asm/arch/mx6-ddr.h>
 147 #include <linux/libfdt.h>
 148 #include <spl.h>
 149
 150 static struct mx6ul_iomux_grp_regs mx6_grp_ioregs = {
 151         .grp_addds = 0x00000030,
 152         .grp_ddrmode_ctl = 0x00020000,
 153         .grp_b0ds = 0x00000030,
 154         .grp_ctlds = 0x00000030,
 155         .grp_b1ds = 0x00000030,
 156         .grp_ddrpke = 0x00000000,
 157         .grp_ddrmode = 0x00020000,
 158         .grp_ddr_type = 0x000c0000,
 159 };
 160
 161 static struct mx6ul_iomux_ddr_regs mx6_ddr_ioregs = {
 162         .dram_dqm0 = 0x00000030,
 163         .dram_dqm1 = 0x00000030,
 164         .dram_ras = 0x00000030,
 165         .dram_cas = 0x00000030,
 166         .dram_odt0 = 0x00000030,
 167         .dram_odt1 = 0x00000030,
 168         .dram_sdba2 = 0x00000000,
 169         .dram_sdclk_0 = 0x00000008,
 170         .dram_sdqs0 = 0x00000038,
 171         .dram_sdqs1 = 0x00000030,
 172         .dram_reset = 0x00000030,
 173 };
 174
 175 static struct mx6_mmdc_calibration mx6_mmcd_calib = {
 176         .p0_mpwldectrl0 = 0x00070007,
 177         .p0_mpdgctrl0 = 0x41490145,
 178         .p0_mprddlctl = 0x40404546,
 179         .p0_mpwrdlctl = 0x4040524D,
 180 };
 181
 182 struct mx6_ddr_sysinfo ddr_sysinfo = {
 183         .dsize = 0,
 184         .cs_density = 20,
 185         .ncs = 1,
 186         .cs1_mirror = 0,
 187         .rtt_wr = 2,
 188         .rtt_nom = 1,           /* RTT_Nom = RZQ/2 */
 189         .walat = 1,             /* Write additional latency */
 190         .ralat = 5,             /* Read additional latency */
 191         .mif3_mode = 3,         /* Command prediction working mode */
 192         .bi_on = 1,             /* Bank interleaving enabled */
 193         .sde_to_rst = 0x10,     /* 14 cycles, 200us (JEDEC default) */
 194         .rst_to_cke = 0x23,     /* 33 cycles, 500us (JEDEC default) */
 195         .ddr_type = DDR_TYPE_DDR3,
 196         .refsel = 1,            /* Refresh cycles at 32KHz */
 197         .refr = 7,              /* 8 refreshes commands per refresh cycle */
 198 };
 199
 200 static struct mx6_ddr3_cfg mem_ddr = {
 201         .mem_speed = 800,
 202         .density = 2,
 203         .width = 16,
 204         .banks = 8,
 205         .rowaddr = 14,
 206         .coladdr = 10,
 207         .pagesz = 2,
 208         .trcd = 1500,
 209         .trcmin = 5250,
 210         .trasmin = 3750,
 211 };
 212
 213 void board_boot_order(u32 *spl_boot_list)
 214 {
 215         unsigned int bmode = readl(&src_base->sbmr2);
 216
 217         if (((bmode >> 24) & 0x03) == 0x01) /* Serial Downloader */
 218                 spl_boot_list[0] = BOOT_DEVICE_UART;
 219         else
 220                 spl_boot_list[0] = spl_boot_device();
 221 }
 222
 223 static void ccgr_init(void)
 224 {
 225         struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 226
 227         writel(0xFFFFFFFF, &ccm->CCGR0);
 228         writel(0xFFFFFFFF, &ccm->CCGR1);
 229         writel(0xFFFFFFFF, &ccm->CCGR2);
 230         writel(0xFFFFFFFF, &ccm->CCGR3);
 231         writel(0xFFFFFFFF, &ccm->CCGR4);
 232         writel(0xFFFFFFFF, &ccm->CCGR5);
 233         writel(0xFFFFFFFF, &ccm->CCGR6);
 234         writel(0xFFFFFFFF, &ccm->CCGR7);
 235 }
 236
 237 static void spl_dram_init(void)
 238 {
 239         struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
 240         struct fuse_bank *bank = &ocotp->bank[4];
 241         struct fuse_bank4_regs *fuse =
 242                 (struct fuse_bank4_regs *)bank->fuse_regs;
 243         int reg = readl(&fuse->gp1);
 244
 245         /* 512MB of RAM */
 246         if (reg & 0x1) {
 247                 mem_ddr.density = 4;
 248                 mem_ddr.rowaddr = 15;
 249                 mem_ddr.trcd = 1375;
 250                 mem_ddr.trcmin = 4875;
 251                 mem_ddr.trasmin = 3500;
 252         }
 253
 254         mx6ul_dram_iocfg(mem_ddr.width, &mx6_ddr_ioregs, &mx6_grp_ioregs);
 255         mx6_dram_cfg(&ddr_sysinfo, &mx6_mmcd_calib, &mem_ddr);
 256 }
 257
 258 void spl_board_init(void)
 259 {
 260         preloader_console_init();
 261 }
 262
 263 void board_init_f(ulong dummy)
 264 {
 265         ccgr_init();
 266
 267         /* setup AIPS and disable watchdog */
 268         arch_cpu_init();
 269
 270         /* setup GP timer */
 271         timer_init();
 272
 273         /* DDR initialization */
 274         spl_dram_init();
 275 }
 276 #endif /* CONFIG_SPL_BUILD */