board/toradex/apalis-tk1/apalis-tk1.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (c) 2016-2018 Toradex, Inc.
   4  */
   5
   6 #include <common.h>
   7 #include <dm.h>
   8 #include <env.h>
   9 #include <init.h>
  10 #include <asm/arch-tegra/ap.h>
  11 #include <asm/gpio.h>
  12 #include <asm/io.h>
  13 #include <asm/arch/gpio.h>
  14 #include <asm/arch/pinmux.h>
  15 #include <env_internal.h>
  16 #include <pci_tegra.h>
  17 #include <power/as3722.h>
  18 #include <power/pmic.h>
  19
  20 #include "../common/tdx-common.h"
  21 #include "pinmux-config-apalis-tk1.h"
  22
  23 #define LAN_DEV_OFF_N   TEGRA_GPIO(O, 6)
  24 #define LAN_RESET_N     TEGRA_GPIO(S, 2)
  25 #define FAN_EN          TEGRA_GPIO(DD, 2)
  26 #define LAN_WAKE_N      TEGRA_GPIO(O, 5)
  27 #ifdef CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT
  28 #define PEX_PERST_N     TEGRA_GPIO(DD, 1) /* Apalis GPIO7 */
  29 #define RESET_MOCI_CTRL TEGRA_GPIO(U, 4)
  30 #endif /* CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT */
  31 #define VCC_USBH        TEGRA_GPIO(T, 6)
  32 #define VCC_USBH_V1_0   TEGRA_GPIO(N, 5)
  33 #define VCC_USBO1       TEGRA_GPIO(T, 5)
  34 #define VCC_USBO1_V1_0  TEGRA_GPIO(N, 4)
  35
  36 int arch_misc_init(void)
  37 {
  38         if (readl(NV_PA_BASE_SRAM + NVBOOTINFOTABLE_BOOTTYPE) ==
  39             NVBOOTTYPE_RECOVERY)
  40                 printf("USB recovery mode\n");
  41
  42         /* PCB Version Indication: V1.2 and later have GPIO_PV0 wired to GND */
  43         gpio_request(TEGRA_GPIO(V, 0), "PCB Version Indication");
  44         gpio_direction_input(TEGRA_GPIO(V, 0));
  45         if (gpio_get_value(TEGRA_GPIO(V, 0))) {
  46                 /*
  47                  * if using the default device tree for new V1.2 and later HW,
  48                  * use version for older V1.0 and V1.1 HW
  49                  */
  50                 char *fdt_env = env_get("fdt_module");
  51
  52                 if (fdt_env && !strcmp(FDT_MODULE, fdt_env)) {
  53                         env_set("fdt_module", FDT_MODULE_V1_0);
  54                         printf("patching fdt_module to " FDT_MODULE_V1_0
  55                                " for older V1.0 and V1.1 HW\n");
  56 #ifndef CONFIG_ENV_IS_NOWHERE
  57                         env_save();
  58 #endif
  59                 }
  60
  61                 /* activate USB power enable GPIOs */
  62                 gpio_request(VCC_USBH_V1_0, "VCC_USBH");
  63                 gpio_direction_output(VCC_USBH_V1_0, 1);
  64                 gpio_request(VCC_USBO1_V1_0, "VCC_USBO1");
  65                 gpio_direction_output(VCC_USBO1_V1_0, 1);
  66         } else {
  67                 /* activate USB power enable GPIOs */
  68                 gpio_request(VCC_USBH, "VCC_USBH");
  69                 gpio_direction_output(VCC_USBH, 1);
  70                 gpio_request(VCC_USBO1, "VCC_USBO1");
  71                 gpio_direction_output(VCC_USBO1, 1);
  72         }
  73
  74         return 0;
  75 }
  76
  77 int checkboard(void)
  78 {
  79         puts("Model: Toradex Apalis TK1 2GB\n");
  80
  81         return 0;
  82 }
  83
  84 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
  85 int ft_board_setup(void *blob, bd_t *bd)
  86 {
  87         return ft_common_board_setup(blob, bd);
  88 }
  89 #endif
  90
  91 /*
  92  * Routine: pinmux_init
  93  * Description: Do individual peripheral pinmux configs
  94  */
  95 void pinmux_init(void)
  96 {
  97         pinmux_clear_tristate_input_clamping();
  98
  99         gpio_config_table(apalis_tk1_gpio_inits,
 100                           ARRAY_SIZE(apalis_tk1_gpio_inits));
 101
 102         pinmux_config_pingrp_table(apalis_tk1_pingrps,
 103                                    ARRAY_SIZE(apalis_tk1_pingrps));
 104
 105         pinmux_config_drvgrp_table(apalis_tk1_drvgrps,
 106                                    ARRAY_SIZE(apalis_tk1_drvgrps));
 107 }
 108
 109 #ifdef CONFIG_PCI_TEGRA
 110 /* TODO: Convert to driver model */
 111 static int as3722_sd_enable(struct udevice *pmic, unsigned int sd)
 112 {
 113         int err;
 114
 115         if (sd > 6)
 116                 return -EINVAL;
 117
 118         err = pmic_clrsetbits(pmic, AS3722_SD_CONTROL, 0, 1 << sd);
 119         if (err) {
 120                 pr_err("failed to update SD control register: %d", err);
 121                 return err;
 122         }
 123
 124         return 0;
 125 }
 126
 127 /* TODO: Convert to driver model */
 128 static int as3722_ldo_enable(struct udevice *pmic, unsigned int ldo)
 129 {
 130         int err;
 131         u8 ctrl_reg = AS3722_LDO_CONTROL0;
 132
 133         if (ldo > 11)
 134                 return -EINVAL;
 135
 136         if (ldo > 7) {
 137                 ctrl_reg = AS3722_LDO_CONTROL1;
 138                 ldo -= 8;
 139         }
 140
 141         err = pmic_clrsetbits(pmic, ctrl_reg, 0, 1 << ldo);
 142         if (err) {
 143                 pr_err("failed to update LDO control register: %d", err);
 144                 return err;
 145         }
 146
 147         return 0;
 148 }
 149
 150 int tegra_pcie_board_init(void)
 151 {
 152         struct udevice *dev;
 153         int ret;
 154
 155         ret = uclass_get_device_by_driver(UCLASS_PMIC,
 156                                           DM_GET_DRIVER(pmic_as3722), &dev);
 157         if (ret) {
 158                 pr_err("failed to find AS3722 PMIC: %d\n", ret);
 159                 return ret;
 160         }
 161
 162         ret = as3722_sd_enable(dev, 4);
 163         if (ret < 0) {
 164                 pr_err("failed to enable SD4: %d\n", ret);
 165                 return ret;
 166         }
 167
 168         ret = as3722_sd_set_voltage(dev, 4, 0x24);
 169         if (ret < 0) {
 170                 pr_err("failed to set SD4 voltage: %d\n", ret);
 171                 return ret;
 172         }
 173
 174         gpio_request(LAN_DEV_OFF_N, "LAN_DEV_OFF_N");
 175         gpio_request(LAN_RESET_N, "LAN_RESET_N");
 176         gpio_request(LAN_WAKE_N, "LAN_WAKE_N");
 177
 178 #ifdef CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT
 179         gpio_request(PEX_PERST_N, "PEX_PERST_N");
 180         gpio_request(RESET_MOCI_CTRL, "RESET_MOCI_CTRL");
 181 #endif /* CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT */
 182
 183         return 0;
 184 }
 185
 186 void tegra_pcie_board_port_reset(struct tegra_pcie_port *port)
 187 {
 188         int index = tegra_pcie_port_index_of_port(port);
 189
 190         if (index == 1) { /* I210 Gigabit Ethernet Controller (On-module) */
 191                 struct udevice *dev;
 192                 int ret;
 193
 194                 ret = uclass_get_device_by_driver(UCLASS_PMIC,
 195                                                   DM_GET_DRIVER(pmic_as3722),
 196                                                   &dev);
 197                 if (ret) {
 198                         debug("%s: Failed to find PMIC\n", __func__);
 199                         return;
 200                 }
 201
 202                 /* Reset I210 Gigabit Ethernet Controller */
 203                 gpio_direction_output(LAN_RESET_N, 0);
 204
 205                 /*
 206                  * Make sure we don't get any back feeding from DEV_OFF_N resp.
 207                  * LAN_WAKE_N
 208                  */
 209                 gpio_direction_output(LAN_DEV_OFF_N, 0);
 210                 gpio_direction_output(LAN_WAKE_N, 0);
 211
 212                 /* Make sure LDO9 and LDO10 are initially enabled @ 0V */
 213                 ret = as3722_ldo_enable(dev, 9);
 214                 if (ret < 0) {
 215                         pr_err("failed to enable LDO9: %d\n", ret);
 216                         return;
 217                 }
 218                 ret = as3722_ldo_enable(dev, 10);
 219                 if (ret < 0) {
 220                         pr_err("failed to enable LDO10: %d\n", ret);
 221                         return;
 222                 }
 223                 ret = as3722_ldo_set_voltage(dev, 9, 0x80);
 224                 if (ret < 0) {
 225                         pr_err("failed to set LDO9 voltage: %d\n", ret);
 226                         return;
 227                 }
 228                 ret = as3722_ldo_set_voltage(dev, 10, 0x80);
 229                 if (ret < 0) {
 230                         pr_err("failed to set LDO10 voltage: %d\n", ret);
 231                         return;
 232                 }
 233
 234                 /* Make sure controller gets enabled by disabling DEV_OFF_N */
 235                 gpio_set_value(LAN_DEV_OFF_N, 1);
 236
 237                 /*
 238                  * Enable LDO9 and LDO10 for +V3.3_ETH on patched prototype
 239                  * V1.0A and sample V1.0B and newer modules
 240                  */
 241                 ret = as3722_ldo_set_voltage(dev, 9, 0xff);
 242                 if (ret < 0) {
 243                         pr_err("failed to set LDO9 voltage: %d\n", ret);
 244                         return;
 245                 }
 246                 ret = as3722_ldo_set_voltage(dev, 10, 0xff);
 247                 if (ret < 0) {
 248                         pr_err("failed to set LDO10 voltage: %d\n", ret);
 249                         return;
 250                 }
 251
 252                 /*
 253                  * Must be asserted for 100 ms after power and clocks are stable
 254                  */
 255                 mdelay(100);
 256
 257                 gpio_set_value(LAN_RESET_N, 1);
 258         } else if (index == 0) { /* Apalis PCIe */
 259 #ifdef CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT
 260                 /*
 261                  * Reset PLX PEX 8605 PCIe Switch plus PCIe devices on Apalis
 262                  * Evaluation Board
 263                  */
 264                 gpio_direction_output(PEX_PERST_N, 0);
 265                 gpio_direction_output(RESET_MOCI_CTRL, 0);
 266
 267                 /*
 268                  * Must be asserted for 100 ms after power and clocks are stable
 269                  */
 270                 mdelay(100);
 271
 272                 gpio_set_value(PEX_PERST_N, 1);
 273                 /*
 274                  * Err_5: PEX_REFCLK_OUTpx/nx Clock Outputs is not Guaranteed
 275                  * Until 900 us After PEX_PERST# De-assertion
 276                  */
 277                 mdelay(1);
 278                 gpio_set_value(RESET_MOCI_CTRL, 1);
 279 #endif /* CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT */
 280         }
 281 }
 282 #endif /* CONFIG_PCI_TEGRA */
 283
 284 /*
 285  * Enable/start PWM CPU fan
 286  */
 287 void start_cpu_fan(void)
 288 {
 289         gpio_request(FAN_EN, "FAN_EN");
 290         gpio_direction_output(FAN_EN, 1);
 291 }
 292
 293 /*
 294  * Backlight off before OS handover
 295  */
 296 void board_preboot_os(void)
 297 {
 298         gpio_request(TEGRA_GPIO(BB, 5), "BL_ON");
 299         gpio_direction_output(TEGRA_GPIO(BB, 5), 0);
 300 }