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 <init.h>
   8#include <log.h>
   9#include <asm/arch/clock.h>
  10#include <asm/arch/funcmux.h>
  11#include <asm/arch/pinmux.h>
  12#include <asm/arch-tegra/ap.h>
  13#include <asm/arch-tegra/board.h>
  14#include <asm/arch-tegra/tegra.h>
  15#include <asm/global_data.h>
  16#include <asm/gpio.h>
  17#include <asm/io.h>
  18#include <i2c.h>
  19#include <nand.h>
  20#include <linux/delay.h>
  21#include "../common/tdx-common.h"
  22
  23DECLARE_GLOBAL_DATA_PTR;
  24
  25#define PMU_I2C_ADDRESS         0x34
  26#define MAX_I2C_RETRY           3
  27#define PMU_SUPPLYENE           0x14
  28#define PMU_SUPPLYENE_SYSINEN   (1<<5)
  29#define PMU_SUPPLYENE_EXITSLREQ (1<<1)
  30
  31int arch_misc_init(void)
  32{
  33        /* Disable PMIC sleep mode on low supply voltage */
  34        struct udevice *dev;
  35        u8 addr, data[1];
  36        int err;
  37
  38        err = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, 1, &dev);
  39        if (err) {
  40                debug("%s: Cannot find PMIC I2C chip\n", __func__);
  41                return err;
  42        }
  43
  44        addr = PMU_SUPPLYENE;
  45
  46        err = dm_i2c_read(dev, addr, data, 1);
  47        if (err) {
  48                debug("failed to get PMU_SUPPLYENE\n");
  49                return err;
  50        }
  51
  52        data[0] &= ~PMU_SUPPLYENE_SYSINEN;
  53        data[0] |= PMU_SUPPLYENE_EXITSLREQ;
  54
  55        err = dm_i2c_write(dev, addr, data, 1);
  56        if (err) {
  57                debug("failed to set PMU_SUPPLYENE\n");
  58                return err;
  59        }
  60
  61        /* make sure SODIMM pin 87 nRESET_OUT is released properly */
  62        pinmux_set_func(PMUX_PINGRP_ATA, PMUX_FUNC_GMI);
  63
  64        if (readl(NV_PA_BASE_SRAM + NVBOOTINFOTABLE_BOOTTYPE) ==
  65            NVBOOTTYPE_RECOVERY)
  66                printf("USB recovery mode\n");
  67
  68        return 0;
  69}
  70
  71int checkboard(void)
  72{
  73        printf("Model: Toradex Colibri T20 %dMB V%s\n",
  74               (gd->ram_size == 0x10000000) ? 256 : 512,
  75               (get_nand_dev_by_index(0)->erasesize >> 10 == 512) ?
  76               ((gd->ram_size == 0x10000000) ? "1.1B" : "1.1C") : "1.2A");
  77
  78        return 0;
  79}
  80
  81#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
  82int ft_board_setup(void *blob, struct bd_info *bd)
  83{
  84        return ft_common_board_setup(blob, bd);
  85}
  86#endif
  87
  88#ifdef CONFIG_MMC_SDHCI_TEGRA
  89/*
  90 * Routine: pin_mux_mmc
  91 * Description: setup the pin muxes/tristate values for the SDMMC(s)
  92 */
  93void pin_mux_mmc(void)
  94{
  95        funcmux_select(PERIPH_ID_SDMMC4, FUNCMUX_SDMMC4_ATB_GMA_4_BIT);
  96        pinmux_tristate_disable(PMUX_PINGRP_GMB);
  97}
  98#endif
  99
 100#ifdef CONFIG_TEGRA_NAND
 101void pin_mux_nand(void)
 102{
 103        funcmux_select(PERIPH_ID_NDFLASH, FUNCMUX_NDFLASH_KBC_8_BIT);
 104
 105        /*
 106         * configure pingroup ATC to something unrelated to
 107         * avoid ATC overriding KBC
 108         */
 109        pinmux_set_func(PMUX_PINGRP_ATC, PMUX_FUNC_GMI);
 110}
 111#endif
 112
 113#ifdef CONFIG_USB_EHCI_TEGRA
 114void pin_mux_usb(void)
 115{
 116        /* module internal USB bus to connect ethernet chipset */
 117        funcmux_select(PERIPH_ID_USB2, FUNCMUX_USB2_ULPI);
 118
 119        /* ULPI reference clock output */
 120        pinmux_set_func(PMUX_PINGRP_CDEV2, PMUX_FUNC_PLLP_OUT4);
 121        pinmux_tristate_disable(PMUX_PINGRP_CDEV2);
 122
 123        /* PHY reset GPIO */
 124        pinmux_tristate_disable(PMUX_PINGRP_UAC);
 125
 126        /* VBus GPIO */
 127        pinmux_tristate_disable(PMUX_PINGRP_DTE);
 128
 129        /* Reset ASIX using LAN_RESET */
 130        gpio_request(TEGRA_GPIO(V, 4), "LAN_RESET");
 131        gpio_direction_output(TEGRA_GPIO(V, 4), 0);
 132        pinmux_tristate_disable(PMUX_PINGRP_GPV);
 133        udelay(5);
 134        gpio_set_value(TEGRA_GPIO(V, 4), 1);
 135
 136        /* USBH_PEN: USB 1 aka Tegra USB port 3 VBus */
 137        pinmux_tristate_disable(PMUX_PINGRP_SPIG);
 138}
 139#endif
 140
 141#ifdef CONFIG_VIDEO_TEGRA20
 142/*
 143 * Routine: pin_mux_display
 144 * Description: setup the pin muxes/tristate values for the LCD interface)
 145 */
 146void pin_mux_display(void)
 147{
 148        /*
 149         * Manually untristate BL_ON (PT4 - SODIMM 71) as specified through
 150         * device-tree
 151         */
 152        pinmux_tristate_disable(PMUX_PINGRP_DTA);
 153
 154        pinmux_set_func(PMUX_PINGRP_SDC, PMUX_FUNC_PWM);
 155        pinmux_tristate_disable(PMUX_PINGRP_SDC);
 156}
 157
 158/*
 159 * Backlight off before OS handover
 160 */
 161void board_preboot_os(void)
 162{
 163        gpio_request(TEGRA_GPIO(T, 4), "BL_ON");
 164        gpio_direction_output(TEGRA_GPIO(T, 4), 0);
 165}
 166#endif
 167