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 <net.h>
  14 #include <usb.h>
  15 #include <asm/cache.h>
  16 #include <asm/gpio.h>
  17 #include <fdt_support.h>
  18 #include <asm/arch/dram.h>
  19 #include <asm/arch/misc.h>
  20
  21 DECLARE_GLOBAL_DATA_PTR;
  22
  23 /* pointer to the device tree ammended by the firmware */
  24 extern void *fw_dtb;
  25
  26 void *board_fdt_blob_setup(void)
  27 {
  28         if (fdt_magic(fw_dtb) != FDT_MAGIC) {
  29                 printf("Firmware provided invalid dtb!\n");
  30                 return NULL;
  31         }
  32
  33         return fw_dtb;
  34 }
  35
  36 int dram_init(void)
  37 {
  38         gd->ram_size = PHYS_SDRAM_1_SIZE;
  39
  40         return 0;
  41 }
  42
  43 int dram_init_banksize(void)
  44 {
  45         gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
  46         gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
  47
  48         return 0;
  49 }
  50
  51 int board_usb_init(int index, enum usb_init_type init)
  52 {
  53         static struct udevice *pmic_gpio;
  54         static struct gpio_desc hub_reset, usb_sel;
  55         int ret = 0, node;
  56
  57         if (!pmic_gpio) {
  58                 ret = uclass_get_device_by_name(UCLASS_GPIO,
  59                                                 "pm8916_gpios@c000",
  60                                                 &pmic_gpio);
  61                 if (ret < 0) {
  62                         printf("Failed to find pm8916_gpios@c000 node.\n");
  63                         return ret;
  64                 }
  65         }
  66
  67         /* Try to request gpios needed to start usb host on dragonboard */
  68         if (!dm_gpio_is_valid(&hub_reset)) {
  69                 node = fdt_subnode_offset(gd->fdt_blob,
  70                                           dev_of_offset(pmic_gpio),
  71                                           "usb_hub_reset_pm");
  72                 if (node < 0) {
  73                         printf("Failed to find usb_hub_reset_pm dt node.\n");
  74                         return node;
  75                 }
  76                 ret = gpio_request_by_name_nodev(offset_to_ofnode(node),
  77                                                  "gpios", 0, &hub_reset, 0);
  78                 if (ret < 0) {
  79                         printf("Failed to request usb_hub_reset_pm gpio.\n");
  80                         return ret;
  81                 }
  82         }
  83
  84         if (!dm_gpio_is_valid(&usb_sel)) {
  85                 node = fdt_subnode_offset(gd->fdt_blob,
  86                                           dev_of_offset(pmic_gpio),
  87                                           "usb_sw_sel_pm");
  88                 if (node < 0) {
  89                         printf("Failed to find usb_sw_sel_pm dt node.\n");
  90                         return 0;
  91                 }
  92                 ret = gpio_request_by_name_nodev(offset_to_ofnode(node),
  93                                                  "gpios", 0, &usb_sel, 0);
  94                 if (ret < 0) {
  95                         printf("Failed to request usb_sw_sel_pm gpio.\n");
  96                         return ret;
  97                 }
  98         }
  99
 100         if (init == USB_INIT_HOST) {
 101                 /* Start USB Hub */
 102                 dm_gpio_set_dir_flags(&hub_reset,
 103                                       GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
 104                 mdelay(100);
 105                 /* Switch usb to host connectors */
 106                 dm_gpio_set_dir_flags(&usb_sel,
 107                                       GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
 108                 mdelay(100);
 109         } else { /* Device */
 110                 /* Disable hub */
 111                 dm_gpio_set_dir_flags(&hub_reset, GPIOD_IS_OUT);
 112                 /* Switch back to device connector */
 113                 dm_gpio_set_dir_flags(&usb_sel, GPIOD_IS_OUT);
 114         }
 115
 116         return 0;
 117 }
 118
 119 /* Check for vol- button - if pressed - stop autoboot */
 120 int misc_init_r(void)
 121 {
 122         struct udevice *pon;
 123         struct gpio_desc resin;
 124         int node, ret;
 125
 126         ret = uclass_get_device_by_name(UCLASS_GPIO, "pm8916_pon@800", &pon);
 127         if (ret < 0) {
 128                 printf("Failed to find PMIC pon node. Check device tree\n");
 129                 return 0;
 130         }
 131
 132         node = fdt_subnode_offset(gd->fdt_blob, dev_of_offset(pon),
 133                                   "key_vol_down");
 134         if (node < 0) {
 135                 printf("Failed to find key_vol_down node. Check device tree\n");
 136                 return 0;
 137         }
 138
 139         if (gpio_request_by_name_nodev(offset_to_ofnode(node), "gpios", 0,
 140                                        &resin, 0)) {
 141                 printf("Failed to request key_vol_down button.\n");
 142                 return 0;
 143         }
 144
 145         if (dm_gpio_get_value(&resin)) {
 146                 env_set("bootdelay", "-1");
 147                 env_set("bootcmd", "fastboot 0");
 148                 printf("key_vol_down pressed - Starting fastboot.\n");
 149         }
 150
 151         return 0;
 152 }
 153
 154 int board_init(void)
 155 {
 156         return 0;
 157 }
 158
 159 int board_late_init(void)
 160 {
 161         char serial[16];
 162
 163         memset(serial, 0, 16);
 164         snprintf(serial, 13, "%x", msm_board_serial());
 165         env_set("serial#", serial);
 166         return 0;
 167 }
 168
 169 /* Fixup of DTB for Linux Kernel
 170  * 1. Fixup installed DRAM.
 171  * 2. Fixup WLAN/BT Mac address:
 172  *      First, check if MAC addresses for WLAN/BT exists as environemnt
 173  *      variables wlanaddr,btaddr. if not, generate a unique address.
 174  */
 175
 176 int ft_board_setup(void *blob, bd_t *bd)
 177 {
 178         u8 mac[ARP_HLEN];
 179
 180         msm_fixup_memory(blob);
 181
 182         if (!eth_env_get_enetaddr("wlanaddr", mac)) {
 183                 msm_generate_mac_addr(mac);
 184         };
 185
 186         do_fixup_by_compat(blob, "qcom,wcnss-wlan",
 187                            "local-mac-address", mac, ARP_HLEN, 1);
 188
 189
 190         if (!eth_env_get_enetaddr("btaddr", mac)) {
 191                 msm_generate_mac_addr(mac);
 192
 193 /* The BD address is same as WLAN MAC address but with
 194  * least significant bit flipped.
 195  */
 196                 mac[0] ^= 0x01;
 197         };
 198
 199         do_fixup_by_compat(blob, "qcom,wcnss-bt",
 200                            "local-bd-address", mac, ARP_HLEN, 1);
 201         return 0;
 202 }
 203
 204 void reset_cpu(ulong addr)
 205 {
 206         psci_system_reset();
 207 }