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