board/intel/minnowmax/minnowmax.c

   1 /*
   2  * Copyright (C) 2015, Google, Inc
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <dm.h>
   9 #include <asm/gpio.h>
  10 #include <dm/device-internal.h>
  11 #include <dm/uclass-internal.h>
  12
  13 #define GPIO_BANKE_NAME         "gpioe"
  14
  15 int misc_init_r(void)
  16 {
  17         struct udevice *dev;
  18         struct gpio_desc desc;
  19         int ret;
  20
  21         /*
  22          * Turn on USB VBUS for the two USB ports on the board.
  23          * Each port's VBUS is controlled by a GPIO pin.
  24          */
  25
  26         ret = uclass_find_device_by_name(UCLASS_GPIO, GPIO_BANKE_NAME, &dev);
  27         if (ret) {
  28                 debug("%s: GPIO %s device cannot be not found (ret=%d)\n",
  29                       __func__, GPIO_BANKE_NAME, ret);
  30                 return ret;
  31         }
  32
  33         ret = device_probe(dev);
  34         if (ret) {
  35                 debug("%s: GPIO %s device probe failed (ret=%d)\n",
  36                       __func__, GPIO_BANKE_NAME, ret);
  37                 return ret;
  38         }
  39
  40         desc.dev = dev;
  41         desc.flags = GPIOD_IS_OUT;
  42
  43         /* GPIO E8 controls the bottom port */
  44         desc.offset = 8;
  45
  46         ret = dm_gpio_request(&desc, "usb_host_en0");
  47         if (ret)
  48                 return ret;
  49         dm_gpio_set_value(&desc, 1);
  50
  51         /* GPIO E9 controls the upper port */
  52         desc.offset = 9;
  53
  54         ret = dm_gpio_request(&desc, "usb_host_en1");
  55         if (ret)
  56                 return ret;
  57
  58         dm_gpio_set_value(&desc, 1);
  59
  60         return 0;
  61 }