LXR uboot/board/congatec/conga-qeval20-qa3-e3845/conga-qeval20-qa3.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright (C) 2016 Stefan Roese <sr@denx.de>
   4 */
   5
   6#include <common.h>
   7#include <i2c.h>
   8#include <init.h>
   9#include <winbond_w83627.h>
  10#include <asm/gpio.h>
  11#include <asm/ibmpc.h>
  12#include <asm/pnp_def.h>
  13
  14int board_early_init_f(void)
  15{
  16#ifndef CONFIG_INTERNAL_UART
  17        /*
  18         * The FSP enables the BayTrail internal legacy UART (again).
  19         * Disable it again, so that the Winbond one can be used.
  20         */
  21        setup_internal_uart(0);
  22
  23        /* Enable the legacy UART in the Winbond W83627 Super IO chip */
  24        winbond_enable_serial(PNP_DEV(WINBOND_IO_PORT, W83627DHG_SP1),
  25                              UART0_BASE, UART0_IRQ);
  26#endif
  27
  28        return 0;
  29}
  30
  31int board_late_init(void)
  32{
  33        struct udevice *dev;
  34        u8 buf[8];
  35        int ret;
  36
  37        /* Configure SMSC USB2513 USB Hub: 7bit address 0x2c */
  38        ret = i2c_get_chip_for_busnum(0, 0x2c, 1, &dev);
  39        if (ret) {
  40                printf("Cannot find USB2513: %d\n", ret);
  41                return 0;
  42        }
  43
  44        /*
  45         * The first access to the USB Hub fails sometimes, so lets read
  46         * a dummy byte to be sure here
  47         */
  48        dm_i2c_read(dev, 0x00, buf, 1);
  49
  50        /*
  51         * The SMSC hub is not visible on the I2C bus after the first
  52         * configuration at power-up. The following code deliberately
  53         * does not report upon failure of these I2C write calls.
  54         */
  55        buf[0] = 0x93;
  56        dm_i2c_write(dev, 0x06, buf, 1);
  57
  58        buf[0] = 0xaa;
  59        dm_i2c_write(dev, 0xf8, buf, 1);
  60
  61        buf[0] = 0x0f;
  62        dm_i2c_write(dev, 0xfa, buf, 1);
  63
  64        buf[0] = 0x01;
  65        dm_i2c_write(dev, 0xff, buf, 1);
  66
  67        return 0;
  68}
  69