| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Board init file for Dragonboard 410C |
| * |
| * (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com> |
| */ |
| |
| #include <common.h> |
| #include <cpu_func.h> |
| #include <dm.h> |
| #include <env.h> |
| #include <init.h> |
| #include <net.h> |
| #include <usb.h> |
| #include <asm/cache.h> |
| #include <asm/global_data.h> |
| #include <asm/gpio.h> |
| #include <fdt_support.h> |
| #include <asm/arch/dram.h> |
| #include <asm/arch/misc.h> |
| #include <linux/delay.h> |
| |
| DECLARE_GLOBAL_DATA_PTR; |
| |
| /* pointer to the device tree ammended by the firmware */ |
| extern void *fw_dtb; |
| |
| void *board_fdt_blob_setup(void) |
| { |
| if (fdt_magic(fw_dtb) != FDT_MAGIC) { |
| printf("Firmware provided invalid dtb!\n"); |
| return NULL; |
| } |
| |
| return fw_dtb; |
| } |
| |
| int dram_init(void) |
| { |
| gd->ram_size = PHYS_SDRAM_1_SIZE; |
| |
| return 0; |
| } |
| |
| int dram_init_banksize(void) |
| { |
| gd->bd->bi_dram[0].start = PHYS_SDRAM_1; |
| gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE; |
| |
| return 0; |
| } |
| |
| int board_usb_init(int index, enum usb_init_type init) |
| { |
| static struct udevice *pmic_gpio; |
| static struct gpio_desc hub_reset, usb_sel; |
| int ret = 0, node; |
| |
| if (!pmic_gpio) { |
| ret = uclass_get_device_by_name(UCLASS_GPIO, |
| "pm8916_gpios@c000", |
| &pmic_gpio); |
| if (ret < 0) { |
| printf("Failed to find pm8916_gpios@c000 node.\n"); |
| return ret; |
| } |
| } |
| |
| /* Try to request gpios needed to start usb host on dragonboard */ |
| if (!dm_gpio_is_valid(&hub_reset)) { |
| node = fdt_subnode_offset(gd->fdt_blob, |
| dev_of_offset(pmic_gpio), |
| "usb_hub_reset_pm"); |
| if (node < 0) { |
| printf("Failed to find usb_hub_reset_pm dt node.\n"); |
| return node; |
| } |
| ret = gpio_request_by_name_nodev(offset_to_ofnode(node), |
| "gpios", 0, &hub_reset, 0); |
| if (ret < 0) { |
| printf("Failed to request usb_hub_reset_pm gpio.\n"); |
| return ret; |
| } |
| } |
| |
| if (!dm_gpio_is_valid(&usb_sel)) { |
| node = fdt_subnode_offset(gd->fdt_blob, |
| dev_of_offset(pmic_gpio), |
| "usb_sw_sel_pm"); |
| if (node < 0) { |
| printf("Failed to find usb_sw_sel_pm dt node.\n"); |
| return 0; |
| } |
| ret = gpio_request_by_name_nodev(offset_to_ofnode(node), |
| "gpios", 0, &usb_sel, 0); |
| if (ret < 0) { |
| printf("Failed to request usb_sw_sel_pm gpio.\n"); |
| return ret; |
| } |
| } |
| |
| if (init == USB_INIT_HOST) { |
| /* Start USB Hub */ |
| dm_gpio_set_dir_flags(&hub_reset, |
| GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE); |
| mdelay(100); |
| /* Switch usb to host connectors */ |
| dm_gpio_set_dir_flags(&usb_sel, |
| GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE); |
| mdelay(100); |
| } else { /* Device */ |
| /* Disable hub */ |
| dm_gpio_set_dir_flags(&hub_reset, GPIOD_IS_OUT); |
| /* Switch back to device connector */ |
| dm_gpio_set_dir_flags(&usb_sel, GPIOD_IS_OUT); |
| } |
| |
| return 0; |
| } |
| |
| /* Check for vol- button - if pressed - stop autoboot */ |
| int misc_init_r(void) |
| { |
| struct udevice *pon; |
| struct gpio_desc resin; |
| int node, ret; |
| |
| ret = uclass_get_device_by_name(UCLASS_GPIO, "pm8916_pon@800", &pon); |
| if (ret < 0) { |
| printf("Failed to find PMIC pon node. Check device tree\n"); |
| return 0; |
| } |
| |
| node = fdt_subnode_offset(gd->fdt_blob, dev_of_offset(pon), |
| "key_vol_down"); |
| if (node < 0) { |
| printf("Failed to find key_vol_down node. Check device tree\n"); |
| return 0; |
| } |
| |
| if (gpio_request_by_name_nodev(offset_to_ofnode(node), "gpios", 0, |
| &resin, 0)) { |
| printf("Failed to request key_vol_down button.\n"); |
| return 0; |
| } |
| |
| if (dm_gpio_get_value(&resin)) { |
| env_set("bootdelay", "-1"); |
| env_set("bootcmd", "fastboot 0"); |
| printf("key_vol_down pressed - Starting fastboot.\n"); |
| } |
| |
| return 0; |
| } |
| |
| int board_init(void) |
| { |
| return 0; |
| } |
| |
| int board_late_init(void) |
| { |
| char serial[16]; |
| |
| memset(serial, 0, 16); |
| snprintf(serial, 13, "%x", msm_board_serial()); |
| env_set("serial#", serial); |
| return 0; |
| } |
| |
| /* Fixup of DTB for Linux Kernel |
| * 1. Fixup installed DRAM. |
| * 2. Fixup WLAN/BT Mac address: |
| * First, check if MAC addresses for WLAN/BT exists as environemnt |
| * variables wlanaddr,btaddr. if not, generate a unique address. |
| */ |
| |
| int ft_board_setup(void *blob, struct bd_info *bd) |
| { |
| u8 mac[ARP_HLEN]; |
| |
| msm_fixup_memory(blob); |
| |
| if (!eth_env_get_enetaddr("wlanaddr", mac)) { |
| msm_generate_mac_addr(mac); |
| }; |
| |
| do_fixup_by_compat(blob, "qcom,wcnss-wlan", |
| "local-mac-address", mac, ARP_HLEN, 1); |
| |
| |
| if (!eth_env_get_enetaddr("btaddr", mac)) { |
| msm_generate_mac_addr(mac); |
| |
| /* The BD address is same as WLAN MAC address but with |
| * least significant bit flipped. |
| */ |
| mac[0] ^= 0x01; |
| }; |
| |
| do_fixup_by_compat(blob, "qcom,wcnss-bt", |
| "local-bd-address", mac, ARP_HLEN, 1); |
| return 0; |
| } |
| |
| void reset_cpu(ulong addr) |
| { |
| psci_system_reset(); |
| } |