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 <usb.h>
  11 #include <asm/gpio.h>
  12 #include <fdt_support.h>
  13
  14 DECLARE_GLOBAL_DATA_PTR;
  15
  16 /* pointer to the device tree ammended by the firmware */
  17 extern void *fw_dtb;
  18
  19 void *board_fdt_blob_setup(void)
  20 {
  21         if (fdt_magic(fw_dtb) != FDT_MAGIC) {
  22                 printf("Firmware provided invalid dtb!\n");
  23                 return NULL;
  24         }
  25
  26         return fw_dtb;
  27 }
  28
  29 int dram_init(void)
  30 {
  31         gd->ram_size = PHYS_SDRAM_1_SIZE;
  32
  33         return 0;
  34 }
  35
  36 int dram_init_banksize(void)
  37 {
  38         gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
  39         gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
  40
  41         return 0;
  42 }
  43
  44 int board_prepare_usb(enum usb_init_type type)
  45 {
  46         static struct udevice *pmic_gpio;
  47         static struct gpio_desc hub_reset, usb_sel;
  48         int ret = 0, node;
  49
  50         if (!pmic_gpio) {
  51                 ret = uclass_get_device_by_name(UCLASS_GPIO,
  52                                                 "pm8916_gpios@c000",
  53                                                 &pmic_gpio);
  54                 if (ret < 0) {
  55                         printf("Failed to find pm8916_gpios@c000 node.\n");
  56                         return ret;
  57                 }
  58         }
  59
  60         /* Try to request gpios needed to start usb host on dragonboard */
  61         if (!dm_gpio_is_valid(&hub_reset)) {
  62                 node = fdt_subnode_offset(gd->fdt_blob,
  63                                           dev_of_offset(pmic_gpio),
  64                                           "usb_hub_reset_pm");
  65                 if (node < 0) {
  66                         printf("Failed to find usb_hub_reset_pm dt node.\n");
  67                         return node;
  68                 }
  69                 ret = gpio_request_by_name_nodev(offset_to_ofnode(node),
  70                                                  "gpios", 0, &hub_reset, 0);
  71                 if (ret < 0) {
  72                         printf("Failed to request usb_hub_reset_pm gpio.\n");
  73                         return ret;
  74                 }
  75         }
  76
  77         if (!dm_gpio_is_valid(&usb_sel)) {
  78                 node = fdt_subnode_offset(gd->fdt_blob,
  79                                           dev_of_offset(pmic_gpio),
  80                                           "usb_sw_sel_pm");
  81                 if (node < 0) {
  82                         printf("Failed to find usb_sw_sel_pm dt node.\n");
  83                         return 0;
  84                 }
  85                 ret = gpio_request_by_name_nodev(offset_to_ofnode(node),
  86                                                  "gpios", 0, &usb_sel, 0);
  87                 if (ret < 0) {
  88                         printf("Failed to request usb_sw_sel_pm gpio.\n");
  89                         return ret;
  90                 }
  91         }
  92
  93         if (type == USB_INIT_HOST) {
  94                 /* Start USB Hub */
  95                 dm_gpio_set_dir_flags(&hub_reset,
  96                                       GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
  97                 mdelay(100);
  98                 /* Switch usb to host connectors */
  99                 dm_gpio_set_dir_flags(&usb_sel,
 100                                       GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
 101                 mdelay(100);
 102         } else { /* Device */
 103                 /* Disable hub */
 104                 dm_gpio_set_dir_flags(&hub_reset, GPIOD_IS_OUT);
 105                 /* Switch back to device connector */
 106                 dm_gpio_set_dir_flags(&usb_sel, GPIOD_IS_OUT);
 107         }
 108
 109         return 0;
 110 }
 111
 112 /* Check for vol- button - if pressed - stop autoboot */
 113 int misc_init_r(void)
 114 {
 115         struct udevice *pon;
 116         struct gpio_desc resin;
 117         int node, ret;
 118
 119         ret = uclass_get_device_by_name(UCLASS_GPIO, "pm8916_pon@800", &pon);
 120         if (ret < 0) {
 121                 printf("Failed to find PMIC pon node. Check device tree\n");
 122                 return 0;
 123         }
 124
 125         node = fdt_subnode_offset(gd->fdt_blob, dev_of_offset(pon),
 126                                   "key_vol_down");
 127         if (node < 0) {
 128                 printf("Failed to find key_vol_down node. Check device tree\n");
 129                 return 0;
 130         }
 131
 132         if (gpio_request_by_name_nodev(offset_to_ofnode(node), "gpios", 0,
 133                                        &resin, 0)) {
 134                 printf("Failed to request key_vol_down button.\n");
 135                 return 0;
 136         }
 137
 138         if (dm_gpio_get_value(&resin)) {
 139                 env_set("bootdelay", "-1");
 140                 printf("Power button pressed - dropping to console.\n");
 141         }
 142
 143         return 0;
 144 }
 145
 146 int board_init(void)
 147 {
 148         return 0;
 149 }
 150
 151 int ft_board_setup(void *blob, bd_t *bd)
 152 {
 153         int offset, len, i;
 154         const char *mac;
 155         struct {
 156                 const char *compatible;
 157                 const char *property;
 158         } fix[] = {
 159                 [0] = {
 160                         /* update the kernel's dtb with wlan mac */
 161                         .compatible = "qcom,wcnss-wlan",
 162                         .property = "local-mac-address",
 163                 },
 164                 [1] = {
 165                         /* update the kernel's dtb with bt mac */
 166                         .compatible = "qcom,wcnss-bt",
 167                         .property = "local-bd-address",
 168                 },
 169         };
 170
 171         for (i = 0; i < sizeof(fix) / sizeof(fix[0]); i++) {
 172                 offset = fdt_node_offset_by_compatible(gd->fdt_blob, -1,
 173                                                        fix[i].compatible);
 174                 if (offset < 0)
 175                         continue;
 176
 177                 mac = fdt_getprop(gd->fdt_blob, offset, fix[i].property, &len);
 178                 if (mac)
 179                         do_fixup_by_compat(blob, fix[i].compatible,
 180                                            fix[i].property, mac, ARP_HLEN, 1);
 181         }
 182
 183         return 0;
 184 }
 185
 186 void reset_cpu(ulong addr)
 187 {
 188         psci_system_reset();
 189 }