LXR uboot/board/toradex/colibri_t20/colibri

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 *  Copyright (C) 2012 Lucas Stach
   4 */
   5
   6#include <common.h>
   7#include <asm/arch/clock.h>
   8#include <asm/arch/funcmux.h>
   9#include <asm/arch/pinmux.h>
  10#include <asm/arch-tegra/ap.h>
  11#include <asm/arch-tegra/board.h>
  12#include <asm/arch-tegra/tegra.h>
  13#include <asm/gpio.h>
  14#include <asm/io.h>
  15#include <i2c.h>
  16#include <nand.h>
  17#include "../common/tdx-common.h"
  18
  19DECLARE_GLOBAL_DATA_PTR;
  20
  21#define PMU_I2C_ADDRESS         0x34
  22#define MAX_I2C_RETRY           3
  23#define PMU_SUPPLYENE           0x14
  24#define PMU_SUPPLYENE_SYSINEN   (1<<5)
  25#define PMU_SUPPLYENE_EXITSLREQ (1<<1)
  26
  27int arch_misc_init(void)
  28{
  29        /* Disable PMIC sleep mode on low supply voltage */
  30        struct udevice *dev;
  31        u8 addr, data[1];
  32        int err;
  33
  34        err = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, 1, &dev);
  35        if (err) {
  36                debug("%s: Cannot find PMIC I2C chip\n", __func__);
  37                return err;
  38        }
  39
  40        addr = PMU_SUPPLYENE;
  41
  42        err = dm_i2c_read(dev, addr, data, 1);
  43        if (err) {
  44                debug("failed to get PMU_SUPPLYENE\n");
  45                return err;
  46        }
  47
  48        data[0] &= ~PMU_SUPPLYENE_SYSINEN;
  49        data[0] |= PMU_SUPPLYENE_EXITSLREQ;
  50
  51        err = dm_i2c_write(dev, addr, data, 1);
  52        if (err) {
  53                debug("failed to set PMU_SUPPLYENE\n");
  54                return err;
  55        }
  56
  57        /* make sure SODIMM pin 87 nRESET_OUT is released properly */
  58        pinmux_set_func(PMUX_PINGRP_ATA, PMUX_FUNC_GMI);
  59
  60        if (readl(NV_PA_BASE_SRAM + NVBOOTINFOTABLE_BOOTTYPE) ==
  61            NVBOOTTYPE_RECOVERY)
  62                printf("USB recovery mode\n");
  63
  64        return 0;
  65}
  66
  67int checkboard(void)
  68{
  69        printf("Model: Toradex Colibri T20 %dMB V%s\n",
  70               (gd->ram_size == 0x10000000) ? 256 : 512,
  71               (get_nand_dev_by_index(0)->erasesize >> 10 == 512) ?
  72               ((gd->ram_size == 0x10000000) ? "1.1B" : "1.1C") : "1.2A");
  73
  74        return 0;
  75}
  76
  77#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
  78int ft_board_setup(void *blob, bd_t *bd)
  79{
  80        return ft_common_board_setup(blob, bd);
  81}
  82#endif
  83
  84#ifdef CONFIG_MMC_SDHCI_TEGRA
  85/*
  86 * Routine: pin_mux_mmc
  87 * Description: setup the pin muxes/tristate values for the SDMMC(s)
  88 */
  89void pin_mux_mmc(void)
  90{
  91        funcmux_select(PERIPH_ID_SDMMC4, FUNCMUX_SDMMC4_ATB_GMA_4_BIT);
  92        pinmux_tristate_disable(PMUX_PINGRP_GMB);
  93}
  94#endif
  95
  96#ifdef CONFIG_TEGRA_NAND
  97void pin_mux_nand(void)
  98{
  99        funcmux_select(PERIPH_ID_NDFLASH, FUNCMUX_NDFLASH_KBC_8_BIT);
 100
 101        /*
 102         * configure pingroup ATC to something unrelated to
 103         * avoid ATC overriding KBC
 104         */
 105        pinmux_set_func(PMUX_PINGRP_ATC, PMUX_FUNC_GMI);
 106}
 107#endif
 108
 109#ifdef CONFIG_USB_EHCI_TEGRA
 110void pin_mux_usb(void)
 111{
 112        /* module internal USB bus to connect ethernet chipset */
 113        funcmux_select(PERIPH_ID_USB2, FUNCMUX_USB2_ULPI);
 114
 115        /* ULPI reference clock output */
 116        pinmux_set_func(PMUX_PINGRP_CDEV2, PMUX_FUNC_PLLP_OUT4);
 117        pinmux_tristate_disable(PMUX_PINGRP_CDEV2);
 118
 119        /* PHY reset GPIO */
 120        pinmux_tristate_disable(PMUX_PINGRP_UAC);
 121
 122        /* VBus GPIO */
 123        pinmux_tristate_disable(PMUX_PINGRP_DTE);
 124
 125        /* Reset ASIX using LAN_RESET */
 126        gpio_request(TEGRA_GPIO(V, 4), "LAN_RESET");
 127        gpio_direction_output(TEGRA_GPIO(V, 4), 0);
 128        pinmux_tristate_disable(PMUX_PINGRP_GPV);
 129        udelay(5);
 130        gpio_set_value(TEGRA_GPIO(V, 4), 1);
 131
 132        /* USBH_PEN: USB 1 aka Tegra USB port 3 VBus */
 133        pinmux_tristate_disable(PMUX_PINGRP_SPIG);
 134}
 135#endif
 136
 137#ifdef CONFIG_VIDEO_TEGRA20
 138/*
 139 * Routine: pin_mux_display
 140 * Description: setup the pin muxes/tristate values for the LCD interface)
 141 */
 142void pin_mux_display(void)
 143{
 144        /*
 145         * Manually untristate BL_ON (PT4 - SODIMM 71) as specified through
 146         * device-tree
 147         */
 148        pinmux_tristate_disable(PMUX_PINGRP_DTA);
 149
 150        pinmux_set_func(PMUX_PINGRP_SDC, PMUX_FUNC_PWM);
 151        pinmux_tristate_disable(PMUX_PINGRP_SDC);
 152}
 153
 154/*
 155 * Backlight off before OS handover
 156 */
 157void board_preboot_os(void)
 158{
 159        gpio_request(TEGRA_GPIO(T, 4), "BL_ON");
 160        gpio_direction_output(TEGRA_GPIO(T, 4), 0);
 161}
 162#endif
 163