LXR uboot/board/nvidia/p3450-0000/p3450-0000.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * (C) Copyright 2018-2019
   4 * NVIDIA Corporation <www.nvidia.com>
   5 *
   6 */
   7
   8#include <common.h>
   9#include <fdtdec.h>
  10#include <i2c.h>
  11#include <linux/bitops.h>
  12#include <linux/libfdt.h>
  13#include <pca953x.h>
  14#include <asm/arch/gpio.h>
  15#include <asm/arch/pinmux.h>
  16#include <asm/arch-tegra/board.h>
  17#include "../p2571/max77620_init.h"
  18
  19void pin_mux_mmc(void)
  20{
  21        struct udevice *dev;
  22        uchar val;
  23        int ret;
  24
  25        /* Turn on MAX77620 LDO2 to 3.3V for SD card power */
  26        debug("%s: Set LDO2 for VDDIO_SDMMC_AP power to 3.3V\n", __func__);
  27        ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev);
  28        if (ret) {
  29                printf("%s: Cannot find MAX77620 I2C chip\n", __func__);
  30                return;
  31        }
  32        /* 0xF2 for 3.3v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
  33        val = 0xF2;
  34        ret = dm_i2c_write(dev, MAX77620_CNFG1_L2_REG, &val, 1);
  35        if (ret)
  36                printf("i2c_write 0 0x3c 0x27 failed: %d\n", ret);
  37
  38        /* Disable LDO4 discharge */
  39        ret = dm_i2c_read(dev, MAX77620_CNFG2_L4_REG, &val, 1);
  40        if (ret) {
  41                printf("i2c_read 0 0x3c 0x2c failed: %d\n", ret);
  42        } else {
  43                val &= ~BIT(1); /* ADE */
  44                ret = dm_i2c_write(dev, MAX77620_CNFG2_L4_REG, &val, 1);
  45                if (ret)
  46                        printf("i2c_write 0 0x3c 0x2c failed: %d\n", ret);
  47        }
  48
  49        /* Set MBLPD */
  50        ret = dm_i2c_read(dev, MAX77620_CNFGGLBL1_REG, &val, 1);
  51        if (ret) {
  52                printf("i2c_write 0 0x3c 0x00 failed: %d\n", ret);
  53        } else {
  54                val |= BIT(6); /* MBLPD */
  55                ret = dm_i2c_write(dev, MAX77620_CNFGGLBL1_REG, &val, 1);
  56                if (ret)
  57                        printf("i2c_write 0 0x3c 0x00 failed: %d\n", ret);
  58        }
  59}
  60
  61#ifdef CONFIG_PCI_TEGRA
  62int tegra_pcie_board_init(void)
  63{
  64        struct udevice *dev;
  65        uchar val;
  66        int ret;
  67
  68        /* Turn on MAX77620 LDO1 to 1.05V for PEX power */
  69        debug("%s: Set LDO1 for PEX power to 1.05V\n", __func__);
  70        ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev);
  71        if (ret) {
  72                printf("%s: Cannot find MAX77620 I2C chip\n", __func__);
  73                return -1;
  74        }
  75        /* 0xCA for 1.05v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
  76        val = 0xCA;
  77        ret = dm_i2c_write(dev, MAX77620_CNFG1_L1_REG, &val, 1);
  78        if (ret)
  79                printf("i2c_write 0 0x3c 0x25 failed: %d\n", ret);
  80
  81        return 0;
  82}
  83#endif /* PCI */
  84
  85static const char * const nodes[] = {
  86        "/host1x@50000000/dc@54200000",
  87        "/host1x@50000000/dc@54240000",
  88        "/external-memory-controller@7001b000",
  89};
  90
  91int ft_board_setup(void *fdt, struct bd_info *bd)
  92{
  93        ft_mac_address_setup(fdt);
  94        ft_carveout_setup(fdt, nodes, ARRAY_SIZE(nodes));
  95
  96        return 0;
  97}
  98