| /* |
| * Board init file for Dragonboard 410C |
| * |
| * (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com> |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| |
| #include <common.h> |
| #include <dm.h> |
| #include <usb.h> |
| #include <asm/gpio.h> |
| |
| DECLARE_GLOBAL_DATA_PTR; |
| |
| 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_prepare_usb(enum usb_init_type type) |
| { |
| 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(gd->fdt_blob, 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(gd->fdt_blob, node, "gpios", 0, |
| &usb_sel, 0); |
| if (ret < 0) { |
| printf("Failed to request usb_sw_sel_pm gpio.\n"); |
| return ret; |
| } |
| } |
| |
| if (type == 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; |
| } |
| |
| int board_init(void) |
| { |
| 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(gd->fdt_blob, node, "gpios", 0, &resin, |
| 0)) { |
| printf("Failed to request key_vol_down button.\n"); |
| return 0; |
| } |
| |
| if (dm_gpio_get_value(&resin)) { |
| setenv("bootdelay", "-1"); |
| printf("Power button pressed - dropping to console.\n"); |
| } |
| |
| return 0; |
| } |