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 <cpu_func.h>
  10 #include <dm.h>
  11 #include <env.h>
  12 #include <init.h>
  13 #include <usb.h>
  14 #include <asm/gpio.h>
  15 #include <fdt_support.h>
  16 #include <asm/arch/dram.h>
  17 #include <asm/arch/misc.h>
  18
  19 DECLARE_GLOBAL_DATA_PTR;
  20
  21 /* pointer to the device tree ammended by the firmware */
  22 extern void *fw_dtb;
  23
  24 void *board_fdt_blob_setup(void)
  25 {
  26         if (fdt_magic(fw_dtb) != FDT_MAGIC) {
  27                 printf("Firmware provided invalid dtb!\n");
  28                 return NULL;
  29         }
  30
  31         return fw_dtb;
  32 }
  33
  34 int dram_init(void)
  35 {
  36         gd->ram_size = PHYS_SDRAM_1_SIZE;
  37
  38         return 0;
  39 }
  40
  41 int dram_init_banksize(void)
  42 {
  43         gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
  44         gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
  45
  46         return 0;
  47 }
  48
  49 int board_usb_init(int index, enum usb_init_type init)
  50 {
  51         static struct udevice *pmic_gpio;
  52         static struct gpio_desc hub_reset, usb_sel;
  53         int ret = 0, node;
  54
  55         if (!pmic_gpio) {
  56                 ret = uclass_get_device_by_name(UCLASS_GPIO,
  57                                                 "pm8916_gpios@c000",
  58                                                 &pmic_gpio);
  59                 if (ret < 0) {
  60                         printf("Failed to find pm8916_gpios@c000 node.\n");
  61                         return ret;
  62                 }
  63         }
  64
  65         /* Try to request gpios needed to start usb host on dragonboard */
  66         if (!dm_gpio_is_valid(&hub_reset)) {
  67                 node = fdt_subnode_offset(gd->fdt_blob,
  68                                           dev_of_offset(pmic_gpio),
  69                                           "usb_hub_reset_pm");
  70                 if (node < 0) {
  71                         printf("Failed to find usb_hub_reset_pm dt node.\n");
  72                         return node;
  73                 }
  74                 ret = gpio_request_by_name_nodev(offset_to_ofnode(node),
  75                                                  "gpios", 0, &hub_reset, 0);
  76                 if (ret < 0) {
  77                         printf("Failed to request usb_hub_reset_pm gpio.\n");
  78                         return ret;
  79                 }
  80         }
  81
  82         if (!dm_gpio_is_valid(&usb_sel)) {
  83                 node = fdt_subnode_offset(gd->fdt_blob,
  84                                           dev_of_offset(pmic_gpio),
  85                                           "usb_sw_sel_pm");
  86                 if (node < 0) {
  87                         printf("Failed to find usb_sw_sel_pm dt node.\n");
  88                         return 0;
  89                 }
  90                 ret = gpio_request_by_name_nodev(offset_to_ofnode(node),
  91                                                  "gpios", 0, &usb_sel, 0);
  92                 if (ret < 0) {
  93                         printf("Failed to request usb_sw_sel_pm gpio.\n");
  94                         return ret;
  95                 }
  96         }
  97
  98         if (init == USB_INIT_HOST) {
  99                 /* Start USB Hub */
 100                 dm_gpio_set_dir_flags(&hub_reset,
 101                                       GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
 102                 mdelay(100);
 103                 /* Switch usb to host connectors */
 104                 dm_gpio_set_dir_flags(&usb_sel,
 105                                       GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
 106                 mdelay(100);
 107         } else { /* Device */
 108                 /* Disable hub */
 109                 dm_gpio_set_dir_flags(&hub_reset, GPIOD_IS_OUT);
 110                 /* Switch back to device connector */
 111                 dm_gpio_set_dir_flags(&usb_sel, GPIOD_IS_OUT);
 112         }
 113
 114         return 0;
 115 }
 116
 117 /* Check for vol- button - if pressed - stop autoboot */
 118 int misc_init_r(void)
 119 {
 120         struct udevice *pon;
 121         struct gpio_desc resin;
 122         int node, ret;
 123
 124         ret = uclass_get_device_by_name(UCLASS_GPIO, "pm8916_pon@800", &pon);
 125         if (ret < 0) {
 126                 printf("Failed to find PMIC pon node. Check device tree\n");
 127                 return 0;
 128         }
 129
 130         node = fdt_subnode_offset(gd->fdt_blob, dev_of_offset(pon),
 131                                   "key_vol_down");
 132         if (node < 0) {
 133                 printf("Failed to find key_vol_down node. Check device tree\n");
 134                 return 0;
 135         }
 136
 137         if (gpio_request_by_name_nodev(offset_to_ofnode(node), "gpios", 0,
 138                                        &resin, 0)) {
 139                 printf("Failed to request key_vol_down button.\n");
 140                 return 0;
 141         }
 142
 143         if (dm_gpio_get_value(&resin)) {
 144                 env_set("bootdelay", "-1");
 145                 env_set("bootcmd", "fastboot 0");
 146                 printf("key_vol_down pressed - Starting fastboot.\n");
 147         }
 148
 149         return 0;
 150 }
 151
 152 int board_init(void)
 153 {
 154         return 0;
 155 }
 156
 157 int board_late_init(void)
 158 {
 159         char serial[16];
 160
 161         memset(serial, 0, 16);
 162         snprintf(serial, 13, "%x", msm_board_serial());
 163         env_set("serial#", serial);
 164         return 0;
 165 }
 166
 167 /* Fixup of DTB for Linux Kernel
 168  * 1. Fixup installed DRAM.
 169  * 2. Fixup WLAN/BT Mac address:
 170  *      First, check if MAC addresses for WLAN/BT exists as environemnt
 171  *      variables wlanaddr,btaddr. if not, generate a unique address.
 172  */
 173
 174 int ft_board_setup(void *blob, bd_t *bd)
 175 {
 176         u8 mac[ARP_HLEN];
 177
 178         msm_fixup_memory(blob);
 179
 180         if (!eth_env_get_enetaddr("wlanaddr", mac)) {
 181                 msm_generate_mac_addr(mac);
 182         };
 183
 184         do_fixup_by_compat(blob, "qcom,wcnss-wlan",
 185                            "local-mac-address", mac, ARP_HLEN, 1);
 186
 187
 188         if (!eth_env_get_enetaddr("btaddr", mac)) {
 189                 msm_generate_mac_addr(mac);
 190
 191 /* The BD address is same as WLAN MAC address but with
 192  * least significant bit flipped.
 193  */
 194                 mac[0] ^= 0x01;
 195         };
 196
 197         do_fixup_by_compat(blob, "qcom,wcnss-bt",
 198                            "local-bd-address", mac, ARP_HLEN, 1);
 199         return 0;
 200 }
 201
 202 void reset_cpu(ulong addr)
 203 {
 204         psci_system_reset();
 205 }