board/logicpd/imx6/imx6logic.c

   1 /*
   2  * Copyright (C) 2017 Logic PD, Inc.
   3  *
   4  * Author: Adam Ford <aford173@gmail.com>
   5  *
   6  * Based on SabreSD by Fabio Estevam <fabio.estevam@nxp.com>
   7  * and updates by Jagan Teki <jagan@amarulasolutions.com>
   8  *
   9  * SPDX-License-Identifier:    GPL-2.0+
  10  */
  11
  12 #include <common.h>
  13 #include <miiphy.h>
  14 #include <mmc.h>
  15 #include <fsl_esdhc.h>
  16 #include <asm/io.h>
  17 #include <asm/gpio.h>
  18 #include <linux/sizes.h>
  19 #include <asm/arch/clock.h>
  20 #include <asm/arch/crm_regs.h>
  21 #include <asm/arch/iomux.h>
  22 #include <asm/arch/mxc_hdmi.h>
  23 #include <asm/arch/mx6-pins.h>
  24 #include <asm/arch/sys_proto.h>
  25 #include <asm/imx-common/boot_mode.h>
  26 #include <asm/imx-common/iomux-v3.h>
  27
  28 DECLARE_GLOBAL_DATA_PTR;
  29
  30 #define UART_PAD_CTRL  (PAD_CTL_PKE | PAD_CTL_PUE |            \
  31         PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED |               \
  32         PAD_CTL_DSE_40ohm   | PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
  33
  34 #define NAND_PAD_CTRL  (PAD_CTL_PKE | PAD_CTL_PUE |            \
  35         PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED   |             \
  36         PAD_CTL_DSE_40ohm   | PAD_CTL_HYS)
  37
  38 int dram_init(void)
  39 {
  40         gd->ram_size = imx_ddr_size();
  41         return 0;
  42 }
  43
  44 static iomux_v3_cfg_t const uart1_pads[] = {
  45         MX6_PAD_SD3_DAT7__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
  46         MX6_PAD_SD3_DAT6__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
  47 };
  48
  49 static iomux_v3_cfg_t const uart2_pads[] = {
  50         MX6_PAD_SD4_DAT4__UART2_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
  51         MX6_PAD_SD4_DAT5__UART2_RTS_B | MUX_PAD_CTRL(UART_PAD_CTRL),
  52         MX6_PAD_SD4_DAT6__UART2_CTS_B | MUX_PAD_CTRL(UART_PAD_CTRL),
  53         MX6_PAD_SD4_DAT7__UART2_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
  54 };
  55
  56 static iomux_v3_cfg_t const uart3_pads[] = {
  57         MX6_PAD_EIM_D23__UART3_CTS_B | MUX_PAD_CTRL(UART_PAD_CTRL),
  58         MX6_PAD_EIM_D24__UART3_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
  59         MX6_PAD_EIM_D25__UART3_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
  60         MX6_PAD_EIM_EB3__UART3_RTS_B | MUX_PAD_CTRL(UART_PAD_CTRL),
  61 };
  62
  63 static void fixup_enet_clock(void)
  64 {
  65         struct iomuxc *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
  66         struct gpio_desc nint;
  67         struct gpio_desc reset;
  68         int ret;
  69
  70         /* Set Ref Clock to 50 MHz */
  71         enable_fec_anatop_clock(0, ENET_50MHZ);
  72
  73         /* Set GPIO_16 as ENET_REF_CLK_OUT */
  74         setbits_le32(&iomuxc_regs->gpr[1], IOMUXC_GPR1_ENET_CLK_SEL_MASK);
  75
  76         /* Request GPIO Pins to reset Ethernet with new clock */
  77         ret = dm_gpio_lookup_name("GPIO4_7", &nint);
  78         if (ret) {
  79                 printf("Unable to lookup GPIO4_7\n");
  80                 return;
  81         }
  82
  83         ret = dm_gpio_request(&nint, "eth0_nInt");
  84         if (ret) {
  85                 printf("Unable to request eth0_nInt\n");
  86                 return;
  87         }
  88
  89         /* Ensure nINT is input or PHY won't startup */
  90         dm_gpio_set_dir_flags(&nint, GPIOD_IS_IN);
  91
  92         ret = dm_gpio_lookup_name("GPIO4_9", &reset);
  93         if (ret) {
  94                 printf("Unable to lookup GPIO4_9\n");
  95                 return;
  96         }
  97
  98         ret = dm_gpio_request(&reset, "eth0_reset");
  99         if (ret) {
 100                 printf("Unable to request eth0_reset\n");
 101                 return;
 102         }
 103
 104         /* Reset LAN8710A PHY */
 105         dm_gpio_set_dir_flags(&reset, GPIOD_IS_OUT);
 106         dm_gpio_set_value(&reset, 0);
 107         udelay(150);
 108         dm_gpio_set_value(&reset, 1);
 109         mdelay(50);
 110 }
 111
 112 static void setup_iomux_uart(void)
 113 {
 114         imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
 115         imx_iomux_v3_setup_multiple_pads(uart2_pads, ARRAY_SIZE(uart2_pads));
 116         imx_iomux_v3_setup_multiple_pads(uart3_pads, ARRAY_SIZE(uart3_pads));
 117 }
 118
 119 static iomux_v3_cfg_t const nand_pads[] = {
 120         MX6_PAD_NANDF_CS0__NAND_CE0_B | MUX_PAD_CTRL(NAND_PAD_CTRL),
 121         MX6_PAD_NANDF_ALE__NAND_ALE  | MUX_PAD_CTRL(NAND_PAD_CTRL),
 122         MX6_PAD_NANDF_CLE__NAND_CLE  | MUX_PAD_CTRL(NAND_PAD_CTRL),
 123         MX6_PAD_NANDF_WP_B__NAND_WP_B  | MUX_PAD_CTRL(NAND_PAD_CTRL),
 124         MX6_PAD_NANDF_RB0__NAND_READY_B   | MUX_PAD_CTRL(NAND_PAD_CTRL),
 125         MX6_PAD_NANDF_D0__NAND_DATA00    | MUX_PAD_CTRL(NAND_PAD_CTRL),
 126         MX6_PAD_NANDF_D1__NAND_DATA01    | MUX_PAD_CTRL(NAND_PAD_CTRL),
 127         MX6_PAD_NANDF_D2__NAND_DATA02    | MUX_PAD_CTRL(NAND_PAD_CTRL),
 128         MX6_PAD_NANDF_D3__NAND_DATA03    | MUX_PAD_CTRL(NAND_PAD_CTRL),
 129         MX6_PAD_NANDF_D4__NAND_DATA04    | MUX_PAD_CTRL(NAND_PAD_CTRL),
 130         MX6_PAD_NANDF_D5__NAND_DATA05    | MUX_PAD_CTRL(NAND_PAD_CTRL),
 131         MX6_PAD_NANDF_D6__NAND_DATA06    | MUX_PAD_CTRL(NAND_PAD_CTRL),
 132         MX6_PAD_NANDF_D7__NAND_DATA07    | MUX_PAD_CTRL(NAND_PAD_CTRL),
 133         MX6_PAD_SD4_CLK__NAND_WE_B    | MUX_PAD_CTRL(NAND_PAD_CTRL),
 134         MX6_PAD_SD4_CMD__NAND_RE_B    | MUX_PAD_CTRL(NAND_PAD_CTRL),
 135 };
 136
 137 static void setup_nand_pins(void)
 138 {
 139         imx_iomux_v3_setup_multiple_pads(nand_pads, ARRAY_SIZE(nand_pads));
 140 }
 141
 142 int board_phy_config(struct phy_device *phydev)
 143 {
 144         if (phydev->drv->config)
 145                 phydev->drv->config(phydev);
 146
 147         return 0;
 148 }
 149
 150 /*
 151  * Do not overwrite the console
 152  * Use always serial for U-Boot console
 153  */
 154 int overwrite_console(void)
 155 {
 156         return 1;
 157 }
 158
 159 int board_early_init_f(void)
 160 {
 161         fixup_enet_clock();
 162         setup_iomux_uart();
 163         setup_nand_pins();
 164         return 0;
 165 }
 166
 167 int board_init(void)
 168 {
 169         /* address of boot parameters */
 170         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 171         return 0;
 172 }
 173
 174 int board_late_init(void)
 175 {
 176         setenv("board_name", "imx6logic");
 177
 178         if (is_mx6dq()) {
 179                 setenv("board_rev", "MX6DQ");
 180                 setenv("fdt_file", "imx6q-logicpd.dtb");
 181         }
 182
 183         return 0;
 184 }