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 #include <linux/delay.h>
  21
  22 DECLARE_GLOBAL_DATA_PTR;
  23
  24 /* pointer to the device tree ammended by the firmware */
  25 extern void *fw_dtb;
  26
  27 void *board_fdt_blob_setup(void)
  28 {
  29         if (fdt_magic(fw_dtb) != FDT_MAGIC) {
  30                 printf("Firmware provided invalid dtb!\n");
  31                 return NULL;
  32         }
  33
  34         return fw_dtb;
  35 }
  36
  37 int dram_init(void)
  38 {
  39         gd->ram_size = PHYS_SDRAM_1_SIZE;
  40
  41         return 0;
  42 }
  43
  44 int dram_init_banksize(void)
  45 {
  46         gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
  47         gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
  48
  49         return 0;
  50 }
  51
  52 int board_usb_init(int index, enum usb_init_type init)
  53 {
  54         static struct udevice *pmic_gpio;
  55         static struct gpio_desc hub_reset, usb_sel;
  56         int ret = 0, node;
  57
  58         if (!pmic_gpio) {
  59                 ret = uclass_get_device_by_name(UCLASS_GPIO,
  60                                                 "pm8916_gpios@c000",
  61                                                 &pmic_gpio);
  62                 if (ret < 0) {
  63                         printf("Failed to find pm8916_gpios@c000 node.\n");
  64                         return ret;
  65                 }
  66         }
  67
  68         /* Try to request gpios needed to start usb host on dragonboard */
  69         if (!dm_gpio_is_valid(&hub_reset)) {
  70                 node = fdt_subnode_offset(gd->fdt_blob,
  71                                           dev_of_offset(pmic_gpio),
  72                                           "usb_hub_reset_pm");
  73                 if (node < 0) {
  74                         printf("Failed to find usb_hub_reset_pm dt node.\n");
  75                         return node;
  76                 }
  77                 ret = gpio_request_by_name_nodev(offset_to_ofnode(node),
  78                                                  "gpios", 0, &hub_reset, 0);
  79                 if (ret < 0) {
  80                         printf("Failed to request usb_hub_reset_pm gpio.\n");
  81                         return ret;
  82                 }
  83         }
  84
  85         if (!dm_gpio_is_valid(&usb_sel)) {
  86                 node = fdt_subnode_offset(gd->fdt_blob,
  87                                           dev_of_offset(pmic_gpio),
  88                                           "usb_sw_sel_pm");
  89                 if (node < 0) {
  90                         printf("Failed to find usb_sw_sel_pm dt node.\n");
  91                         return 0;
  92                 }
  93                 ret = gpio_request_by_name_nodev(offset_to_ofnode(node),
  94                                                  "gpios", 0, &usb_sel, 0);
  95                 if (ret < 0) {
  96                         printf("Failed to request usb_sw_sel_pm gpio.\n");
  97                         return ret;
  98                 }
  99         }
 100
 101         if (init == USB_INIT_HOST) {
 102                 /* Start USB Hub */
 103                 dm_gpio_set_dir_flags(&hub_reset,
 104                                       GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
 105                 mdelay(100);
 106                 /* Switch usb to host connectors */
 107                 dm_gpio_set_dir_flags(&usb_sel,
 108                                       GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
 109                 mdelay(100);
 110         } else { /* Device */
 111                 /* Disable hub */
 112                 dm_gpio_set_dir_flags(&hub_reset, GPIOD_IS_OUT);
 113                 /* Switch back to device connector */
 114                 dm_gpio_set_dir_flags(&usb_sel, GPIOD_IS_OUT);
 115         }
 116
 117         return 0;
 118 }
 119
 120 /* Check for vol- button - if pressed - stop autoboot */
 121 int misc_init_r(void)
 122 {
 123         struct udevice *pon;
 124         struct gpio_desc resin;
 125         int node, ret;
 126
 127         ret = uclass_get_device_by_name(UCLASS_GPIO, "pm8916_pon@800", &pon);
 128         if (ret < 0) {
 129                 printf("Failed to find PMIC pon node. Check device tree\n");
 130                 return 0;
 131         }
 132
 133         node = fdt_subnode_offset(gd->fdt_blob, dev_of_offset(pon),
 134                                   "key_vol_down");
 135         if (node < 0) {
 136                 printf("Failed to find key_vol_down node. Check device tree\n");
 137                 return 0;
 138         }
 139
 140         if (gpio_request_by_name_nodev(offset_to_ofnode(node), "gpios", 0,
 141                                        &resin, 0)) {
 142                 printf("Failed to request key_vol_down button.\n");
 143                 return 0;
 144         }
 145
 146         if (dm_gpio_get_value(&resin)) {
 147                 env_set("bootdelay", "-1");
 148                 env_set("bootcmd", "fastboot 0");
 149                 printf("key_vol_down pressed - Starting fastboot.\n");
 150         }
 151
 152         return 0;
 153 }
 154
 155 int board_init(void)
 156 {
 157         return 0;
 158 }
 159
 160 int board_late_init(void)
 161 {
 162         char serial[16];
 163
 164         memset(serial, 0, 16);
 165         snprintf(serial, 13, "%x", msm_board_serial());
 166         env_set("serial#", serial);
 167         return 0;
 168 }
 169
 170 /* Fixup of DTB for Linux Kernel
 171  * 1. Fixup installed DRAM.
 172  * 2. Fixup WLAN/BT Mac address:
 173  *      First, check if MAC addresses for WLAN/BT exists as environemnt
 174  *      variables wlanaddr,btaddr. if not, generate a unique address.
 175  */
 176
 177 int ft_board_setup(void *blob, bd_t *bd)
 178 {
 179         u8 mac[ARP_HLEN];
 180
 181         msm_fixup_memory(blob);
 182
 183         if (!eth_env_get_enetaddr("wlanaddr", mac)) {
 184                 msm_generate_mac_addr(mac);
 185         };
 186
 187         do_fixup_by_compat(blob, "qcom,wcnss-wlan",
 188                            "local-mac-address", mac, ARP_HLEN, 1);
 189
 190
 191         if (!eth_env_get_enetaddr("btaddr", mac)) {
 192                 msm_generate_mac_addr(mac);
 193
 194 /* The BD address is same as WLAN MAC address but with
 195  * least significant bit flipped.
 196  */
 197                 mac[0] ^= 0x01;
 198         };
 199
 200         do_fixup_by_compat(blob, "qcom,wcnss-bt",
 201                            "local-bd-address", mac, ARP_HLEN, 1);
 202         return 0;
 203 }
 204
 205 void reset_cpu(ulong addr)
 206 {
 207         psci_system_reset();
 208 }