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 #include <asm/arch/dram.h>
  14
  15 DECLARE_GLOBAL_DATA_PTR;
  16
  17 /* pointer to the device tree ammended by the firmware */
  18 extern void *fw_dtb;
  19
  20 void *board_fdt_blob_setup(void)
  21 {
  22         if (fdt_magic(fw_dtb) != FDT_MAGIC) {
  23                 printf("Firmware provided invalid dtb!\n");
  24                 return NULL;
  25         }
  26
  27         return fw_dtb;
  28 }
  29
  30 int dram_init(void)
  31 {
  32         gd->ram_size = PHYS_SDRAM_1_SIZE;
  33
  34         return 0;
  35 }
  36
  37 int dram_init_banksize(void)
  38 {
  39         gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
  40         gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
  41
  42         return 0;
  43 }
  44
  45 int board_prepare_usb(enum usb_init_type type)
  46 {
  47         static struct udevice *pmic_gpio;
  48         static struct gpio_desc hub_reset, usb_sel;
  49         int ret = 0, node;
  50
  51         if (!pmic_gpio) {
  52                 ret = uclass_get_device_by_name(UCLASS_GPIO,
  53                                                 "pm8916_gpios@c000",
  54                                                 &pmic_gpio);
  55                 if (ret < 0) {
  56                         printf("Failed to find pm8916_gpios@c000 node.\n");
  57                         return ret;
  58                 }
  59         }
  60
  61         /* Try to request gpios needed to start usb host on dragonboard */
  62         if (!dm_gpio_is_valid(&hub_reset)) {
  63                 node = fdt_subnode_offset(gd->fdt_blob,
  64                                           dev_of_offset(pmic_gpio),
  65                                           "usb_hub_reset_pm");
  66                 if (node < 0) {
  67                         printf("Failed to find usb_hub_reset_pm dt node.\n");
  68                         return node;
  69                 }
  70                 ret = gpio_request_by_name_nodev(offset_to_ofnode(node),
  71                                                  "gpios", 0, &hub_reset, 0);
  72                 if (ret < 0) {
  73                         printf("Failed to request usb_hub_reset_pm gpio.\n");
  74                         return ret;
  75                 }
  76         }
  77
  78         if (!dm_gpio_is_valid(&usb_sel)) {
  79                 node = fdt_subnode_offset(gd->fdt_blob,
  80                                           dev_of_offset(pmic_gpio),
  81                                           "usb_sw_sel_pm");
  82                 if (node < 0) {
  83                         printf("Failed to find usb_sw_sel_pm dt node.\n");
  84                         return 0;
  85                 }
  86                 ret = gpio_request_by_name_nodev(offset_to_ofnode(node),
  87                                                  "gpios", 0, &usb_sel, 0);
  88                 if (ret < 0) {
  89                         printf("Failed to request usb_sw_sel_pm gpio.\n");
  90                         return ret;
  91                 }
  92         }
  93
  94         if (type == USB_INIT_HOST) {
  95                 /* Start USB Hub */
  96                 dm_gpio_set_dir_flags(&hub_reset,
  97                                       GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
  98                 mdelay(100);
  99                 /* Switch usb to host connectors */
 100                 dm_gpio_set_dir_flags(&usb_sel,
 101                                       GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
 102                 mdelay(100);
 103         } else { /* Device */
 104                 /* Disable hub */
 105                 dm_gpio_set_dir_flags(&hub_reset, GPIOD_IS_OUT);
 106                 /* Switch back to device connector */
 107                 dm_gpio_set_dir_flags(&usb_sel, GPIOD_IS_OUT);
 108         }
 109
 110         return 0;
 111 }
 112
 113 /* Check for vol- button - if pressed - stop autoboot */
 114 int misc_init_r(void)
 115 {
 116         struct udevice *pon;
 117         struct gpio_desc resin;
 118         int node, ret;
 119
 120         ret = uclass_get_device_by_name(UCLASS_GPIO, "pm8916_pon@800", &pon);
 121         if (ret < 0) {
 122                 printf("Failed to find PMIC pon node. Check device tree\n");
 123                 return 0;
 124         }
 125
 126         node = fdt_subnode_offset(gd->fdt_blob, dev_of_offset(pon),
 127                                   "key_vol_down");
 128         if (node < 0) {
 129                 printf("Failed to find key_vol_down node. Check device tree\n");
 130                 return 0;
 131         }
 132
 133         if (gpio_request_by_name_nodev(offset_to_ofnode(node), "gpios", 0,
 134                                        &resin, 0)) {
 135                 printf("Failed to request key_vol_down button.\n");
 136                 return 0;
 137         }
 138
 139         if (dm_gpio_get_value(&resin)) {
 140                 env_set("bootdelay", "-1");
 141                 printf("Power button pressed - dropping to console.\n");
 142         }
 143
 144         return 0;
 145 }
 146
 147 int board_init(void)
 148 {
 149         return 0;
 150 }
 151
 152 int ft_board_setup(void *blob, bd_t *bd)
 153 {
 154         int offset, len, i;
 155         const char *mac;
 156         struct {
 157                 const char *compatible;
 158                 const char *property;
 159         } fix[] = {
 160                 [0] = {
 161                         /* update the kernel's dtb with wlan mac */
 162                         .compatible = "qcom,wcnss-wlan",
 163                         .property = "local-mac-address",
 164                 },
 165                 [1] = {
 166                         /* update the kernel's dtb with bt mac */
 167                         .compatible = "qcom,wcnss-bt",
 168                         .property = "local-bd-address",
 169                 },
 170         };
 171
 172         for (i = 0; i < sizeof(fix) / sizeof(fix[0]); i++) {
 173                 offset = fdt_node_offset_by_compatible(gd->fdt_blob, -1,
 174                                                        fix[i].compatible);
 175                 if (offset < 0)
 176                         continue;
 177
 178                 mac = fdt_getprop(gd->fdt_blob, offset, fix[i].property, &len);
 179                 if (mac)
 180                         do_fixup_by_compat(blob, fix[i].compatible,
 181                                            fix[i].property, mac, ARP_HLEN, 1);
 182         }
 183
 184         msm_fixup_memory(blob);
 185
 186         return 0;
 187 }
 188
 189 void reset_cpu(ulong addr)
 190 {
 191         psci_system_reset();
 192 }