board/qualcomm/dragonboard410c/dragonboard410c.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Board init file for Dragonboard 410C
   4  *
   5  * (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
   6  */
   7
   8 #include <common.h>
   9 #include <dm.h>
  10 #include <env.h>
  11 #include <usb.h>
  12 #include <asm/gpio.h>
  13 #include <fdt_support.h>
  14 #include <environment.h>
  15 #include <asm/arch/dram.h>
  16 #include <asm/arch/misc.h>
  17
  18 DECLARE_GLOBAL_DATA_PTR;
  19
  20 /* pointer to the device tree ammended by the firmware */
  21 extern void *fw_dtb;
  22
  23 void *board_fdt_blob_setup(void)
  24 {
  25         if (fdt_magic(fw_dtb) != FDT_MAGIC) {
  26                 printf("Firmware provided invalid dtb!\n");
  27                 return NULL;
  28         }
  29
  30         return fw_dtb;
  31 }
  32
  33 int dram_init(void)
  34 {
  35         gd->ram_size = PHYS_SDRAM_1_SIZE;
  36
  37         return 0;
  38 }
  39
  40 int dram_init_banksize(void)
  41 {
  42         gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
  43         gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
  44
  45         return 0;
  46 }
  47
  48 int board_usb_init(int index, enum usb_init_type init)
  49 {
  50         static struct udevice *pmic_gpio;
  51         static struct gpio_desc hub_reset, usb_sel;
  52         int ret = 0, node;
  53
  54         if (!pmic_gpio) {
  55                 ret = uclass_get_device_by_name(UCLASS_GPIO,
  56                                                 "pm8916_gpios@c000",
  57                                                 &pmic_gpio);
  58                 if (ret < 0) {
  59                         printf("Failed to find pm8916_gpios@c000 node.\n");
  60                         return ret;
  61                 }
  62         }
  63
  64         /* Try to request gpios needed to start usb host on dragonboard */
  65         if (!dm_gpio_is_valid(&hub_reset)) {
  66                 node = fdt_subnode_offset(gd->fdt_blob,
  67                                           dev_of_offset(pmic_gpio),
  68                                           "usb_hub_reset_pm");
  69                 if (node < 0) {
  70                         printf("Failed to find usb_hub_reset_pm dt node.\n");
  71                         return node;
  72                 }
  73                 ret = gpio_request_by_name_nodev(offset_to_ofnode(node),
  74                                                  "gpios", 0, &hub_reset, 0);
  75                 if (ret < 0) {
  76                         printf("Failed to request usb_hub_reset_pm gpio.\n");
  77                         return ret;
  78                 }
  79         }
  80
  81         if (!dm_gpio_is_valid(&usb_sel)) {
  82                 node = fdt_subnode_offset(gd->fdt_blob,
  83                                           dev_of_offset(pmic_gpio),
  84                                           "usb_sw_sel_pm");
  85                 if (node < 0) {
  86                         printf("Failed to find usb_sw_sel_pm dt node.\n");
  87                         return 0;
  88                 }
  89                 ret = gpio_request_by_name_nodev(offset_to_ofnode(node),
  90                                                  "gpios", 0, &usb_sel, 0);
  91                 if (ret < 0) {
  92                         printf("Failed to request usb_sw_sel_pm gpio.\n");
  93                         return ret;
  94                 }
  95         }
  96
  97         if (init == USB_INIT_HOST) {
  98                 /* Start USB Hub */
  99                 dm_gpio_set_dir_flags(&hub_reset,
 100                                       GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
 101                 mdelay(100);
 102                 /* Switch usb to host connectors */
 103                 dm_gpio_set_dir_flags(&usb_sel,
 104                                       GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
 105                 mdelay(100);
 106         } else { /* Device */
 107                 /* Disable hub */
 108                 dm_gpio_set_dir_flags(&hub_reset, GPIOD_IS_OUT);
 109                 /* Switch back to device connector */
 110                 dm_gpio_set_dir_flags(&usb_sel, GPIOD_IS_OUT);
 111         }
 112
 113         return 0;
 114 }
 115
 116 /* Check for vol- button - if pressed - stop autoboot */
 117 int misc_init_r(void)
 118 {
 119         struct udevice *pon;
 120         struct gpio_desc resin;
 121         int node, ret;
 122
 123         ret = uclass_get_device_by_name(UCLASS_GPIO, "pm8916_pon@800", &pon);
 124         if (ret < 0) {
 125                 printf("Failed to find PMIC pon node. Check device tree\n");
 126                 return 0;
 127         }
 128
 129         node = fdt_subnode_offset(gd->fdt_blob, dev_of_offset(pon),
 130                                   "key_vol_down");
 131         if (node < 0) {
 132                 printf("Failed to find key_vol_down node. Check device tree\n");
 133                 return 0;
 134         }
 135
 136         if (gpio_request_by_name_nodev(offset_to_ofnode(node), "gpios", 0,
 137                                        &resin, 0)) {
 138                 printf("Failed to request key_vol_down button.\n");
 139                 return 0;
 140         }
 141
 142         if (dm_gpio_get_value(&resin)) {
 143                 env_set("bootdelay", "-1");
 144                 env_set("bootcmd", "fastboot 0");
 145                 printf("key_vol_down pressed - Starting fastboot.\n");
 146         }
 147
 148         return 0;
 149 }
 150
 151 int board_init(void)
 152 {
 153         return 0;
 154 }
 155
 156 int board_late_init(void)
 157 {
 158         char serial[16];
 159
 160         memset(serial, 0, 16);
 161         snprintf(serial, 13, "%x", msm_board_serial());
 162         env_set("serial#", serial);
 163         return 0;
 164 }
 165
 166 /* Fixup of DTB for Linux Kernel
 167  * 1. Fixup installed DRAM.
 168  * 2. Fixup WLAN/BT Mac address:
 169  *      First, check if MAC addresses for WLAN/BT exists as environemnt
 170  *      variables wlanaddr,btaddr. if not, generate a unique address.
 171  */
 172
 173 int ft_board_setup(void *blob, bd_t *bd)
 174 {
 175         u8 mac[ARP_HLEN];
 176
 177         msm_fixup_memory(blob);
 178
 179         if (!eth_env_get_enetaddr("wlanaddr", mac)) {
 180                 msm_generate_mac_addr(mac);
 181         };
 182
 183         do_fixup_by_compat(blob, "qcom,wcnss-wlan",
 184                            "local-mac-address", mac, ARP_HLEN, 1);
 185
 186
 187         if (!eth_env_get_enetaddr("btaddr", mac)) {
 188                 msm_generate_mac_addr(mac);
 189
 190 /* The BD address is same as WLAN MAC address but with
 191  * least significant bit flipped.
 192  */
 193                 mac[0] ^= 0x01;
 194         };
 195
 196         do_fixup_by_compat(blob, "qcom,wcnss-bt",
 197                            "local-bd-address", mac, ARP_HLEN, 1);
 198         return 0;
 199 }
 200
 201 void reset_cpu(ulong addr)
 202 {
 203         psci_system_reset();
 204 }