board/qualcomm/dragonboard410c/dragonboard410c.c

   1 /*
   2  * Board init file for Dragonboard 410C
   3  *
   4  * (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #include <common.h>
  10 #include <dm.h>
  11 #include <usb.h>
  12 #include <asm/gpio.h>
  13 #include <fdt_support.h>
  14
  15 DECLARE_GLOBAL_DATA_PTR;
  16
  17 /* pointer to the device tree ammended by the firmware */
  18 extern const void *fw_dtb;
  19
  20 static char wlan_mac[ARP_HLEN];
  21 static char bt_mac[ARP_HLEN];
  22
  23 int dram_init(void)
  24 {
  25         gd->ram_size = PHYS_SDRAM_1_SIZE;
  26         return 0;
  27 }
  28
  29 int dram_init_banksize(void)
  30 {
  31         gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
  32         gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
  33
  34         return 0;
  35 }
  36
  37 int board_prepare_usb(enum usb_init_type type)
  38 {
  39         static struct udevice *pmic_gpio;
  40         static struct gpio_desc hub_reset, usb_sel;
  41         int ret = 0, node;
  42
  43         if (!pmic_gpio) {
  44                 ret = uclass_get_device_by_name(UCLASS_GPIO,
  45                                                 "pm8916_gpios@c000",
  46                                                 &pmic_gpio);
  47                 if (ret < 0) {
  48                         printf("Failed to find pm8916_gpios@c000 node.\n");
  49                         return ret;
  50                 }
  51         }
  52
  53         /* Try to request gpios needed to start usb host on dragonboard */
  54         if (!dm_gpio_is_valid(&hub_reset)) {
  55                 node = fdt_subnode_offset(gd->fdt_blob,
  56                                           dev_of_offset(pmic_gpio),
  57                                           "usb_hub_reset_pm");
  58                 if (node < 0) {
  59                         printf("Failed to find usb_hub_reset_pm dt node.\n");
  60                         return node;
  61                 }
  62                 ret = gpio_request_by_name_nodev(offset_to_ofnode(node),
  63                                                  "gpios", 0, &hub_reset, 0);
  64                 if (ret < 0) {
  65                         printf("Failed to request usb_hub_reset_pm gpio.\n");
  66                         return ret;
  67                 }
  68         }
  69
  70         if (!dm_gpio_is_valid(&usb_sel)) {
  71                 node = fdt_subnode_offset(gd->fdt_blob,
  72                                           dev_of_offset(pmic_gpio),
  73                                           "usb_sw_sel_pm");
  74                 if (node < 0) {
  75                         printf("Failed to find usb_sw_sel_pm dt node.\n");
  76                         return 0;
  77                 }
  78                 ret = gpio_request_by_name_nodev(offset_to_ofnode(node),
  79                                                  "gpios", 0, &usb_sel, 0);
  80                 if (ret < 0) {
  81                         printf("Failed to request usb_sw_sel_pm gpio.\n");
  82                         return ret;
  83                 }
  84         }
  85
  86         if (type == USB_INIT_HOST) {
  87                 /* Start USB Hub */
  88                 dm_gpio_set_dir_flags(&hub_reset,
  89                                       GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
  90                 mdelay(100);
  91                 /* Switch usb to host connectors */
  92                 dm_gpio_set_dir_flags(&usb_sel,
  93                                       GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
  94                 mdelay(100);
  95         } else { /* Device */
  96                 /* Disable hub */
  97                 dm_gpio_set_dir_flags(&hub_reset, GPIOD_IS_OUT);
  98                 /* Switch back to device connector */
  99                 dm_gpio_set_dir_flags(&usb_sel, GPIOD_IS_OUT);
 100         }
 101
 102         return 0;
 103 }
 104
 105 /* Check for vol- button - if pressed - stop autoboot */
 106 int misc_init_r(void)
 107 {
 108         struct udevice *pon;
 109         struct gpio_desc resin;
 110         int node, ret;
 111
 112         ret = uclass_get_device_by_name(UCLASS_GPIO, "pm8916_pon@800", &pon);
 113         if (ret < 0) {
 114                 printf("Failed to find PMIC pon node. Check device tree\n");
 115                 return 0;
 116         }
 117
 118         node = fdt_subnode_offset(gd->fdt_blob, dev_of_offset(pon),
 119                                   "key_vol_down");
 120         if (node < 0) {
 121                 printf("Failed to find key_vol_down node. Check device tree\n");
 122                 return 0;
 123         }
 124
 125         if (gpio_request_by_name_nodev(offset_to_ofnode(node), "gpios", 0,
 126                                        &resin, 0)) {
 127                 printf("Failed to request key_vol_down button.\n");
 128                 return 0;
 129         }
 130
 131         if (dm_gpio_get_value(&resin)) {
 132                 env_set("bootdelay", "-1");
 133                 printf("Power button pressed - dropping to console.\n");
 134         }
 135
 136         return 0;
 137 }
 138
 139 int board_init(void)
 140 {
 141         int offset, len;
 142         const char *mac;
 143
 144         /* take a copy of the firmware information (the user could unknownly
 145            overwrite that DDR via tftp or other means)  */
 146
 147         offset = fdt_node_offset_by_compatible(fw_dtb, -1, "qcom,wcnss-wlan");
 148         if (offset >= 0) {
 149                 mac = fdt_getprop(fw_dtb, offset, "local-mac-address", &len);
 150                 if (mac)
 151                         memcpy(wlan_mac, mac, ARP_HLEN);
 152         }
 153
 154         offset = fdt_node_offset_by_compatible(fw_dtb, -1, "qcom,wcnss-bt");
 155         if (offset >= 0) {
 156                 mac = fdt_getprop(fw_dtb, offset, "local-bd-address", &len);
 157                 if (mac)
 158                         memcpy(bt_mac, mac, ARP_HLEN);
 159         }
 160
 161         return 0;
 162 }
 163
 164 int ft_board_setup(void *blob, bd_t *bd)
 165 {
 166         do_fixup_by_compat(blob, "qcom,wcnss-wlan", "local-mac-address",
 167                            wlan_mac, ARP_HLEN, 1);
 168
 169         do_fixup_by_compat(blob, "qcom,wcnss-bt", "local-bd-address",
 170                            bt_mac, ARP_HLEN, 1);
 171
 172         return 0;
 173 }