uboot/board/toradex/apalis-tk1/apalis-tk1.c
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   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 <log.h>
  11#include <asm/arch-tegra/ap.h>
  12#include <asm/gpio.h>
  13#include <asm/io.h>
  14#include <asm/arch/gpio.h>
  15#include <asm/arch/pinmux.h>
  16#include <env_internal.h>
  17#include <fdt_support.h>
  18#include <pci_tegra.h>
  19#include <linux/delay.h>
  20#include <power/as3722.h>
  21#include <power/pmic.h>
  22
  23#include "../common/tdx-common.h"
  24#include "pinmux-config-apalis-tk1.h"
  25
  26#define LAN_DEV_OFF_N   TEGRA_GPIO(O, 6)
  27#define LAN_RESET_N     TEGRA_GPIO(S, 2)
  28#define FAN_EN          TEGRA_GPIO(DD, 2)
  29#define LAN_WAKE_N      TEGRA_GPIO(O, 5)
  30#ifdef CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT
  31#define PEX_PERST_N     TEGRA_GPIO(DD, 1) /* Apalis GPIO7 */
  32#define RESET_MOCI_CTRL TEGRA_GPIO(U, 4)
  33#endif /* CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT */
  34#define VCC_USBH        TEGRA_GPIO(T, 6)
  35#define VCC_USBH_V1_0   TEGRA_GPIO(N, 5)
  36#define VCC_USBO1       TEGRA_GPIO(T, 5)
  37#define VCC_USBO1_V1_0  TEGRA_GPIO(N, 4)
  38
  39int arch_misc_init(void)
  40{
  41        if (readl(NV_PA_BASE_SRAM + NVBOOTINFOTABLE_BOOTTYPE) ==
  42            NVBOOTTYPE_RECOVERY) {
  43                printf("USB recovery mode, attempting to boot Toradex Easy "
  44                       "Installer\n");
  45                env_set("bootdelay", "-2");
  46                env_set("defargs", "pcie_aspm=off user_debug=30");
  47                env_set("fdt_high", "");
  48                env_set("initrd_high", "");
  49
  50                env_set("setup", "env set setupargs igb_mac=${ethaddr} "
  51                        "consoleblank=0 no_console_suspend=1 "
  52                        "console=${console},${baudrate}n8 ${memargs}");
  53                env_set("teziargs", "rootfstype=squashfs root=/dev/ram quiet "
  54                        "autoinstall");
  55                env_set("vidargs", "video=HDMI-A-1:640x480-16@60D");
  56                env_set("bootcmd", "run setup; env set bootargs ${defargs} "
  57                        "${setupargs} ${vidargs} ${teziargs}; bootm 0x80208000"
  58                        "#config@${soc}-${fdt_module}-${fdt_board}.dtb");
  59        }
  60
  61        /* PCB Version Indication: V1.2 and later have GPIO_PV0 wired to GND */
  62        gpio_request(TEGRA_GPIO(V, 0), "PCB Version Indication");
  63        gpio_direction_input(TEGRA_GPIO(V, 0));
  64        if (gpio_get_value(TEGRA_GPIO(V, 0))) {
  65                /*
  66                 * if using the default device tree for new V1.2 and later HW,
  67                 * use version for older V1.0 and V1.1 HW
  68                 */
  69                char *fdt_env = env_get("fdt_module");
  70
  71                if (fdt_env && !strcmp(FDT_MODULE, fdt_env)) {
  72                        env_set("fdt_module", FDT_MODULE_V1_0);
  73                        printf("patching fdt_module to " FDT_MODULE_V1_0
  74                               " for older V1.0 and V1.1 HW\n");
  75                }
  76
  77                /* activate USB power enable GPIOs */
  78                gpio_request(VCC_USBH_V1_0, "VCC_USBH");
  79                gpio_direction_output(VCC_USBH_V1_0, 1);
  80                gpio_request(VCC_USBO1_V1_0, "VCC_USBO1");
  81                gpio_direction_output(VCC_USBO1_V1_0, 1);
  82        } else {
  83                /* activate USB power enable GPIOs */
  84                gpio_request(VCC_USBH, "VCC_USBH");
  85                gpio_direction_output(VCC_USBH, 1);
  86                gpio_request(VCC_USBO1, "VCC_USBO1");
  87                gpio_direction_output(VCC_USBO1, 1);
  88        }
  89
  90        return 0;
  91}
  92
  93int checkboard(void)
  94{
  95        puts("Model: Toradex Apalis TK1 2GB\n");
  96
  97        return 0;
  98}
  99
 100#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
 101int ft_board_setup(void *blob, struct bd_info *bd)
 102{
 103        u8 enetaddr[6];
 104
 105        /* MAC addr */
 106        if (eth_env_get_enetaddr("ethaddr", enetaddr)) {
 107                int err = fdt_find_and_setprop(blob,
 108                                               "/pcie@1003000/pci@2,0/ethernet@0,0",
 109                                               "local-mac-address", enetaddr, 6, 0);
 110
 111                /* Older device trees might have used a different node name */
 112                if (err < 0)
 113                        err = fdt_find_and_setprop(blob,
 114                                                   "/pcie@1003000/pci@2,0/pcie@0",
 115                                                   "local-mac-address", enetaddr, 6, 0);
 116
 117                if (err >= 0)
 118                        puts("   MAC address updated...\n");
 119        }
 120
 121        return ft_common_board_setup(blob, bd);
 122}
 123#endif
 124
 125/*
 126 * Routine: pinmux_init
 127 * Description: Do individual peripheral pinmux configs
 128 */
 129void pinmux_init(void)
 130{
 131        pinmux_clear_tristate_input_clamping();
 132
 133        gpio_config_table(apalis_tk1_gpio_inits,
 134                          ARRAY_SIZE(apalis_tk1_gpio_inits));
 135
 136        pinmux_config_pingrp_table(apalis_tk1_pingrps,
 137                                   ARRAY_SIZE(apalis_tk1_pingrps));
 138
 139        pinmux_config_drvgrp_table(apalis_tk1_drvgrps,
 140                                   ARRAY_SIZE(apalis_tk1_drvgrps));
 141}
 142
 143#ifdef CONFIG_PCI_TEGRA
 144/* TODO: Convert to driver model */
 145static int as3722_sd_enable(struct udevice *pmic, unsigned int sd)
 146{
 147        int err;
 148
 149        if (sd > 6)
 150                return -EINVAL;
 151
 152        err = pmic_clrsetbits(pmic, AS3722_SD_CONTROL, 0, 1 << sd);
 153        if (err) {
 154                pr_err("failed to update SD control register: %d", err);
 155                return err;
 156        }
 157
 158        return 0;
 159}
 160
 161/* TODO: Convert to driver model */
 162static int as3722_ldo_enable(struct udevice *pmic, unsigned int ldo)
 163{
 164        int err;
 165        u8 ctrl_reg = AS3722_LDO_CONTROL0;
 166
 167        if (ldo > 11)
 168                return -EINVAL;
 169
 170        if (ldo > 7) {
 171                ctrl_reg = AS3722_LDO_CONTROL1;
 172                ldo -= 8;
 173        }
 174
 175        err = pmic_clrsetbits(pmic, ctrl_reg, 0, 1 << ldo);
 176        if (err) {
 177                pr_err("failed to update LDO control register: %d", err);
 178                return err;
 179        }
 180
 181        return 0;
 182}
 183
 184int tegra_pcie_board_init(void)
 185{
 186        struct udevice *dev;
 187        int ret;
 188
 189        ret = uclass_get_device_by_driver(UCLASS_PMIC,
 190                                          DM_DRIVER_GET(pmic_as3722), &dev);
 191        if (ret) {
 192                pr_err("failed to find AS3722 PMIC: %d\n", ret);
 193                return ret;
 194        }
 195
 196        ret = as3722_sd_enable(dev, 4);
 197        if (ret < 0) {
 198                pr_err("failed to enable SD4: %d\n", ret);
 199                return ret;
 200        }
 201
 202        ret = as3722_sd_set_voltage(dev, 4, 0x24);
 203        if (ret < 0) {
 204                pr_err("failed to set SD4 voltage: %d\n", ret);
 205                return ret;
 206        }
 207
 208        gpio_request(LAN_DEV_OFF_N, "LAN_DEV_OFF_N");
 209        gpio_request(LAN_RESET_N, "LAN_RESET_N");
 210        gpio_request(LAN_WAKE_N, "LAN_WAKE_N");
 211
 212#ifdef CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT
 213        gpio_request(PEX_PERST_N, "PEX_PERST_N");
 214        gpio_request(RESET_MOCI_CTRL, "RESET_MOCI_CTRL");
 215#endif /* CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT */
 216
 217        return 0;
 218}
 219
 220void tegra_pcie_board_port_reset(struct tegra_pcie_port *port)
 221{
 222        int index = tegra_pcie_port_index_of_port(port);
 223
 224        if (index == 1) { /* I210 Gigabit Ethernet Controller (On-module) */
 225                struct udevice *dev;
 226                int ret;
 227
 228                ret = uclass_get_device_by_driver(UCLASS_PMIC,
 229                                                  DM_DRIVER_GET(pmic_as3722),
 230                                                  &dev);
 231                if (ret) {
 232                        debug("%s: Failed to find PMIC\n", __func__);
 233                        return;
 234                }
 235
 236                /* Reset I210 Gigabit Ethernet Controller */
 237                gpio_direction_output(LAN_RESET_N, 0);
 238
 239                /*
 240                 * Make sure we don't get any back feeding from DEV_OFF_N resp.
 241                 * LAN_WAKE_N
 242                 */
 243                gpio_direction_output(LAN_DEV_OFF_N, 0);
 244                gpio_direction_output(LAN_WAKE_N, 0);
 245
 246                /* Make sure LDO9 and LDO10 are initially enabled @ 0V */
 247                ret = as3722_ldo_enable(dev, 9);
 248                if (ret < 0) {
 249                        pr_err("failed to enable LDO9: %d\n", ret);
 250                        return;
 251                }
 252                ret = as3722_ldo_enable(dev, 10);
 253                if (ret < 0) {
 254                        pr_err("failed to enable LDO10: %d\n", ret);
 255                        return;
 256                }
 257                ret = as3722_ldo_set_voltage(dev, 9, 0x80);
 258                if (ret < 0) {
 259                        pr_err("failed to set LDO9 voltage: %d\n", ret);
 260                        return;
 261                }
 262                ret = as3722_ldo_set_voltage(dev, 10, 0x80);
 263                if (ret < 0) {
 264                        pr_err("failed to set LDO10 voltage: %d\n", ret);
 265                        return;
 266                }
 267
 268                /* Make sure controller gets enabled by disabling DEV_OFF_N */
 269                gpio_set_value(LAN_DEV_OFF_N, 1);
 270
 271                /*
 272                 * Enable LDO9 and LDO10 for +V3.3_ETH on patched prototype
 273                 * V1.0A and sample V1.0B and newer modules
 274                 */
 275                ret = as3722_ldo_set_voltage(dev, 9, 0xff);
 276                if (ret < 0) {
 277                        pr_err("failed to set LDO9 voltage: %d\n", ret);
 278                        return;
 279                }
 280                ret = as3722_ldo_set_voltage(dev, 10, 0xff);
 281                if (ret < 0) {
 282                        pr_err("failed to set LDO10 voltage: %d\n", ret);
 283                        return;
 284                }
 285
 286                /*
 287                 * Must be asserted for 100 ms after power and clocks are stable
 288                 */
 289                mdelay(100);
 290
 291                gpio_set_value(LAN_RESET_N, 1);
 292        } else if (index == 0) { /* Apalis PCIe */
 293#ifdef CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT
 294                /*
 295                 * Reset PLX PEX 8605 PCIe Switch plus PCIe devices on Apalis
 296                 * Evaluation Board
 297                 */
 298                gpio_direction_output(PEX_PERST_N, 0);
 299                gpio_direction_output(RESET_MOCI_CTRL, 0);
 300
 301                /*
 302                 * Must be asserted for 100 ms after power and clocks are stable
 303                 */
 304                mdelay(100);
 305
 306                gpio_set_value(PEX_PERST_N, 1);
 307                /*
 308                 * Err_5: PEX_REFCLK_OUTpx/nx Clock Outputs is not Guaranteed
 309                 * Until 900 us After PEX_PERST# De-assertion
 310                 */
 311                mdelay(1);
 312                gpio_set_value(RESET_MOCI_CTRL, 1);
 313#endif /* CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT */
 314        }
 315}
 316#endif /* CONFIG_PCI_TEGRA */
 317
 318/*
 319 * Enable/start PWM CPU fan
 320 */
 321void start_cpu_fan(void)
 322{
 323        gpio_request(FAN_EN, "FAN_EN");
 324        gpio_direction_output(FAN_EN, 1);
 325}
 326
 327/*
 328 * Backlight off before OS handover
 329 */
 330void board_preboot_os(void)
 331{
 332        gpio_request(TEGRA_GPIO(BB, 5), "BL_ON");
 333        gpio_direction_output(TEGRA_GPIO(BB, 5), 0);
 334}
 335